diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt index f21850b7e..60a39b67d 100644 --- a/source/CMakeLists.txt +++ b/source/CMakeLists.txt @@ -766,7 +766,6 @@ set (PCH_SOURCES thirdparty/src/base64.cpp thirdparty/src/fix16.cpp thirdparty/src/md4.cpp - thirdparty/src/enet.cpp # Todo: Split out the license-safe code from this. build/src/animvpx.cpp diff --git a/source/blood/src/blood.cpp b/source/blood/src/blood.cpp index 1019dd406..dd103c65a 100644 --- a/source/blood/src/blood.cpp +++ b/source/blood/src/blood.cpp @@ -525,7 +525,7 @@ void StartLevel(GAMEOPTIONS *gameOptions) if (!bVanilla && !gMe->packSlots[1].isActive) // if diving suit is not active, turn off reverb sound effect sfxSetReverb(0); ambInit(); - sub_79760(); + netReset(); gFrame = 0; gChokeCounter = 0; M_ClearMenus(); @@ -557,12 +557,14 @@ void ProcessFrame(void) gPlayer[i].input.q16mlook = gFifoInput[gNetFifoTail&255][i].q16mlook; } gNetFifoTail++; +#if 0 if (!(gFrame&7)) { CalcGameChecksum(); memcpy(gCheckFifo[gCheckHead[myconnectindex]&255][myconnectindex], gChecksum, sizeof(gChecksum)); gCheckHead[myconnectindex]++; } +#endif for (int i = connecthead; i >= 0; i = connectpoint2[i]) { if (gPlayer[i].input.keyFlags.quit) @@ -797,7 +799,7 @@ static void app_init() static void gameInit() { //RESTART: - sub_79760(); + netReset(); gViewIndex = myconnectindex; gMe = gView = &gPlayer[myconnectindex]; netBroadcastPlayerInfo(myconnectindex); @@ -848,7 +850,6 @@ static void gameTicker() break; if (i >= 0) break; - //faketimerhandler(); ProcessFrame(); gameUpdate = true; } diff --git a/source/blood/src/controls.cpp b/source/blood/src/controls.cpp index d1a0797f4..cc832666e 100644 --- a/source/blood/src/controls.cpp +++ b/source/blood/src/controls.cpp @@ -36,6 +36,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. #include "view.h" #include "d_event.h" #include "gamestate.h" +#include "sound.h" BEGIN_BLD_NS @@ -119,7 +120,8 @@ void LocalKeys(void) char fk = key - sc_F1; if (alt) { - netBroadcastTaunt(myconnectindex, fk); + sndStartSample(4400 + fk, 128, 1, 0); + //netBroadcastTaunt(myconnectindex, fk); } else { @@ -129,7 +131,7 @@ void LocalKeys(void) buttonMap.ClearButton(gamefunc_Third_Person_View); return; } - } + } } diff --git a/source/blood/src/messages.cpp b/source/blood/src/messages.cpp index 765f3dd0c..34e1a0399 100644 --- a/source/blood/src/messages.cpp +++ b/source/blood/src/messages.cpp @@ -331,7 +331,7 @@ void CPlayerMsg::Send(void) { if (VanillaMode() || !IsWhitespaceOnly(text)) { - netBroadcastMessage(myconnectindex, text); + //netBroadcastMessage(myconnectindex, text); if (!VanillaMode()) { char *myName = gProfile[myconnectindex].name; diff --git a/source/blood/src/network.cpp b/source/blood/src/network.cpp index e57c990a3..81f733d60 100644 --- a/source/blood/src/network.cpp +++ b/source/blood/src/network.cpp @@ -21,9 +21,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ //------------------------------------------------------------------------- #include "ns.h" // Must come before everything else! -#ifndef NETCODE_DISABLE -#include "enet.h" -#endif #include "build.h" #include "mmulti.h" @@ -77,90 +74,6 @@ const short word_1328AC = 0x214; PKT_STARTGAME gPacketStartGame; -#ifndef NETCODE_DISABLE -ENetAddress gNetENetAddress; -ENetHost *gNetENetServer; -ENetHost *gNetENetClient; -ENetPeer *gNetENetPeer; -ENetPeer *gNetPlayerPeer[kMaxPlayers]; -bool gNetENetInit = false; - -#define kENetFifoSize 2048 - -//ENetPacket *gNetServerPacketFifo[kENetFifoSize]; -//int gNetServerPacketHead, gNetServerPacketTail; -ENetPacket *gNetPacketFifo[kENetFifoSize]; -int gNetPacketHead, gNetPacketTail; - -enum BLOOD_ENET_CHANNEL { - BLOOD_ENET_SERVICE = 0, - BLOOD_ENET_GAME, - BLOOD_ENET_CHANNEL_MAX -}; - -enum BLOOD_SERVICE { - BLOOD_SERVICE_CONNECTINFO = 0, - BLOOD_SERVICE_CONNECTID, - BLOOD_SERVICE_SENDTOID, -}; - -struct PKT_CONNECTINFO { - short numplayers; - short connecthead; - short connectpoint2[kMaxPlayers]; -}; - -void netServerDisconnect(void) -{ - ENetEvent event; - if (gNetMode != NETWORK_SERVER) - return; - for (int p = 0; p < kMaxPlayers; p++) - if (gNetPlayerPeer[p]) - { - bool bDisconnectStatus = false; - enet_peer_disconnect_later(gNetPlayerPeer[p], 0); - if (enet_host_service(gNetENetServer, &event, 3000) > 0) - { - switch (event.type) - { - case ENET_EVENT_TYPE_DISCONNECT: - bDisconnectStatus = true; - break; - default: - break; - } - } - if (!bDisconnectStatus) - enet_peer_reset(gNetPlayerPeer[p]); - gNetPlayerPeer[p] = NULL; - } -} - -void netClientDisconnect(void) -{ - ENetEvent event; - if (gNetMode != NETWORK_CLIENT || gNetENetPeer == NULL) - return; - enet_peer_disconnect_later(gNetENetPeer, 0); - bool bDisconnectStatus = false; - if (enet_host_service(gNetENetClient, &event, 3000) > 0) - { - switch (event.type) - { - case ENET_EVENT_TYPE_DISCONNECT: - bDisconnectStatus = true; - break; - default: - break; - } - } - if (!bDisconnectStatus) - enet_peer_reset(gNetENetPeer); - gNetENetPeer = NULL; -} -#endif - void netResetToSinglePlayer(void) { myconnectindex = connecthead = 0; @@ -173,58 +86,13 @@ void netResetToSinglePlayer(void) void netSendPacket(int nDest, char *pBuffer, int nSize) { -#ifndef NETCODE_DISABLE - if (gNetMode == NETWORK_NONE) - return; - netUpdate(); - - if (gNetMode == NETWORK_SERVER) - { - if (gNetPlayerPeer[nDest] != NULL) - { - ENetPacket *pNetPacket = enet_packet_create(NULL, nSize + 1, ENET_PACKET_FLAG_RELIABLE); - char *pPBuffer = (char*)pNetPacket->data; - PutPacketByte(pPBuffer, myconnectindex); - PutPacketBuffer(pPBuffer, pBuffer, nSize); - enet_peer_send(gNetPlayerPeer[nDest], BLOOD_ENET_GAME, pNetPacket); - enet_host_service(gNetENetServer, NULL, 0); - } - } - else - { - if (nDest == 0) - { - ENetPacket *pNetPacket = enet_packet_create(NULL, nSize + 1, ENET_PACKET_FLAG_RELIABLE); - char *pPBuffer = (char*)pNetPacket->data; - PutPacketByte(pPBuffer, myconnectindex); - PutPacketBuffer(pPBuffer, pBuffer, nSize); - enet_peer_send(gNetENetPeer, BLOOD_ENET_GAME, pNetPacket); - } - else - { - ENetPacket *pNetPacket = enet_packet_create(NULL, nSize + 3, ENET_PACKET_FLAG_RELIABLE); - char *pPBuffer = (char*)pNetPacket->data; - PutPacketByte(pPBuffer, BLOOD_SERVICE_SENDTOID); - PutPacketByte(pPBuffer, nDest); - PutPacketByte(pPBuffer, myconnectindex); - PutPacketBuffer(pPBuffer, pBuffer, nSize); - enet_peer_send(gNetENetPeer, BLOOD_ENET_SERVICE, pNetPacket); - } - enet_host_service(gNetENetClient, NULL, 0); - } - - netUpdate(); -#endif } void netSendPacketAll(char *pBuffer, int nSize) { - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - if (p != myconnectindex) - netSendPacket(p, pBuffer, nSize); } -void sub_79760(void) +void netReset(void) { gNetFifoClock = gFrameClock = totalclock = 0; gNetFifoMasterTail = 0; @@ -244,311 +112,27 @@ void sub_79760(void) void CalcGameChecksum(void) { - memset(gChecksum, 0, sizeof(gChecksum)); - gChecksum[0] = wrand(); - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - { - int *pBuffer = &gPlayer[p].used1; - int sum = 0; - int length = ((char*)&gPlayer[p+1]-(char*)pBuffer)/4; - while (length--) - { - sum += *pBuffer++; - } - gChecksum[1] ^= sum; - pBuffer = (int*)gPlayer[p].pSprite; - sum = 0; - length = sizeof(spritetype)/4; - while (length--) - { - sum += *pBuffer++; - } - gChecksum[2] ^= sum; - pBuffer = (int*)gPlayer[p].pXSprite; - sum = 0; - length = sizeof(XSPRITE)/4; - while (length--) - { - sum += *pBuffer++; - } - gChecksum[3] ^= sum; - } } void netCheckSync(void) { - char buffer[80]; - if (gGameOptions.nGameType == 0) - return; - if (numplayers == 1) - return; - if (bOutOfSync) - return; - while (1) - { - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - { - if (gCheckTail >= gCheckHead[p]) - return; - } - - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - { - if (p != myconnectindex) - { - int status = memcmp(gCheckFifo[gCheckTail&255][p], gCheckFifo[gCheckTail&255][connecthead], 16); - if (status) - { - sprintf(buffer, "OUT OF SYNC (%d)", p); - char *pBuffer = buffer + strlen(buffer); - for (unsigned int i = 0; i < 4; i++) - { - if (gCheckFifo[gCheckTail&255][p][i] != gCheckFifo[gCheckTail&255][connecthead][i]) - pBuffer += sprintf(pBuffer, " %d", i); - } - viewSetErrorMessage(buffer); - bOutOfSync = 1; - } - } - } - gCheckTail++; - } } short netGetPacket(short *pSource, char *pMessage) { -#ifndef NETCODE_DISABLE - if (gNetMode == NETWORK_NONE) - return 0; - netUpdate(); - if (gNetPacketTail != gNetPacketHead) - { - ENetPacket *pEPacket = gNetPacketFifo[gNetPacketTail]; - gNetPacketTail = (gNetPacketTail+1)%kENetFifoSize; - char *pPacket = (char*)pEPacket->data; - *pSource = GetPacketByte(pPacket); - int nSize = pEPacket->dataLength-1; - memcpy(pMessage, pPacket, nSize); - enet_packet_destroy(pEPacket); - netUpdate(); - return nSize; - } - netUpdate(); -#endif return 0; } void netGetPackets(void) { - short nPlayer; - short nSize; - char buffer[128]; - while ((nSize = netGetPacket(&nPlayer, packet)) > 0) - { - char *pPacket = packet; - switch (GetPacketByte(pPacket)) - { - case 0: // From master - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - { - if (p != myconnectindex) - { - GINPUT *pInput = &gFifoInput[gNetFifoHead[p]&255][p]; - memset(pInput, 0, sizeof(GINPUT)); - pInput->syncFlags.byte = GetPacketByte(pPacket); - pInput->forward = GetPacketWord(pPacket); - pInput->q16turn = GetPacketDWord(pPacket); - pInput->strafe = GetPacketWord(pPacket); - if (pInput->syncFlags.buttonChange) - pInput->buttonFlags.byte = GetPacketByte(pPacket); - if (pInput->syncFlags.keyChange) - pInput->keyFlags.word = GetPacketWord(pPacket); - if (pInput->syncFlags.useChange) - pInput->useFlags.byte = GetPacketByte(pPacket); - if (pInput->syncFlags.weaponChange) - pInput->newWeapon = GetPacketByte(pPacket); - if (pInput->syncFlags.mlookChange) - pInput->q16mlook = GetPacketDWord(pPacket); - gNetFifoHead[p]++; - } - else - { - SYNCFLAGS syncFlags; - syncFlags.byte = GetPacketByte(pPacket); - pPacket += 2+4+2; - if (syncFlags.buttonChange) - pPacket++; - if (syncFlags.keyChange) - pPacket+=2; - if (syncFlags.useChange) - pPacket++; - if (syncFlags.weaponChange) - pPacket++; - if (syncFlags.mlookChange) - pPacket+=4; - } - } - if (((gNetFifoHead[connecthead]-1)&15)==0) - { - for (int p = connectpoint2[connecthead]; p >= 0; p = connectpoint2[p]) - { - int nLag = (signed char)GetPacketByte(pPacket); - if (p == myconnectindex) - otherMinLag = nLag; - } - } - while (pPacket < packet+nSize) - { - int checkSum[4]; - GetPacketBuffer(pPacket, checkSum, sizeof(checkSum)); - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - { - if (p != myconnectindex) - { - memcpy(gCheckFifo[gCheckHead[p]&255][p], checkSum, sizeof(checkSum)); - gCheckHead[p]++; - } - } - } - break; - case 1: // From slave - { - GINPUT *pInput = &gFifoInput[gNetFifoHead[nPlayer]&255][nPlayer]; - memset(pInput, 0, sizeof(GINPUT)); - pInput->syncFlags.byte = GetPacketByte(pPacket); - pInput->forward = GetPacketWord(pPacket); - pInput->q16turn = GetPacketDWord(pPacket); - pInput->strafe = GetPacketWord(pPacket); - if (pInput->syncFlags.buttonChange) - pInput->buttonFlags.byte = GetPacketByte(pPacket); - if (pInput->syncFlags.keyChange) - pInput->keyFlags.word = GetPacketWord(pPacket); - if (pInput->syncFlags.useChange) - pInput->useFlags.byte = GetPacketByte(pPacket); - if (pInput->syncFlags.weaponChange) - pInput->newWeapon = GetPacketByte(pPacket); - if (pInput->syncFlags.mlookChange) - pInput->q16mlook = GetPacketDWord(pPacket); - gNetFifoHead[nPlayer]++; - while (pPacket < packet+nSize) - { - int checkSum[4]; - GetPacketBuffer(pPacket, checkSum, sizeof(checkSum)); - memcpy(gCheckFifo[gCheckHead[nPlayer]&255][nPlayer], checkSum, sizeof(checkSum)); - gCheckHead[nPlayer]++; - } - break; - } - case 2: - { - if (nPlayer == connecthead && (gNetFifoHead[nPlayer]&15) == 0) - { - for (int p = connectpoint2[connecthead]; p >= 0; p = connectpoint2[p]) - { - int nLag = (signed char)GetPacketByte(pPacket); - if (p == myconnectindex) - otherMinLag = nLag; - } - } - GINPUT *pInput = &gFifoInput[gNetFifoHead[nPlayer]&255][nPlayer]; - memset(pInput, 0, sizeof(GINPUT)); - pInput->syncFlags.byte = GetPacketByte(pPacket); - pInput->forward = GetPacketWord(pPacket); - pInput->q16turn = GetPacketDWord(pPacket); - pInput->strafe = GetPacketWord(pPacket); - if (pInput->syncFlags.buttonChange) - pInput->buttonFlags.byte = GetPacketByte(pPacket); - if (pInput->syncFlags.keyChange) - pInput->keyFlags.word = GetPacketWord(pPacket); - if (pInput->syncFlags.useChange) - pInput->useFlags.byte = GetPacketByte(pPacket); - if (pInput->syncFlags.weaponChange) - pInput->newWeapon = GetPacketByte(pPacket); - if (pInput->syncFlags.mlookChange) - pInput->q16mlook = GetPacketDWord(pPacket); - gNetFifoHead[nPlayer]++; - while (pPacket < packet+nSize) - { - int checkSum[4]; - GetPacketBuffer(pPacket, checkSum, sizeof(checkSum)); - memcpy(gCheckFifo[gCheckHead[nPlayer]&255][nPlayer], checkSum, sizeof(checkSum)); - gCheckHead[nPlayer]++; - } - break; - } - case 3: - pPacket += 4; - if (*pPacket != '/' || (*pPacket == 0 && *(pPacket+1) == 0) || (*(pPacket+1) >= '1' && *(pPacket+1) <= '8' && *(pPacket+1)-'1' == myconnectindex)) - { - sprintf(buffer, VanillaMode() ? "%s : %s" : "%s: %s", gProfile[nPlayer].name, pPacket); - viewSetMessage(buffer, VanillaMode() ? 0 : 10); // 10: dark blue - sndStartSample("DMRADIO", 128, -1); - } - break; - case 4: - sndStartSample(4400+GetPacketByte(pPacket), 128, 1, 0); - break; - case 7: - nPlayer = GetPacketDWord(pPacket); - dassert(nPlayer != myconnectindex); - netWaitForEveryone(0); - netPlayerQuit(nPlayer); - netWaitForEveryone(0); - break; - case 249: - nPlayer = GetPacketDWord(pPacket); - dassert(nPlayer != myconnectindex); - netPlayerQuit(nPlayer); - netWaitForEveryone(0); - break; - case 250: - gPlayerReady[nPlayer]++; - break; - case 251: - memcpy(&gProfile[nPlayer], pPacket, sizeof(PROFILE)); - break; - case 252: - pPacket += 4; - memcpy(&gPacketStartGame, pPacket, sizeof(PKT_STARTGAME)); - if (gPacketStartGame.version != word_1328AC) - ThrowError("\nThese versions of Blood cannot play together.\n"); - gStartNewGame = 1; - break; - case 255: - // What are we trying to do here? Opening the menu, maybe? - //inputState.SetKeyStatus(sc_Escape); - M_StartControlPanel(false); - M_SetMenu(NAME_Mainmenu); - break; - } - } } void netBroadcastPlayerLogoff(int nPlayer) { - if (numplayers < 2) - return; - netWaitForEveryone(0); - netPlayerQuit(nPlayer); - if (nPlayer != myconnectindex) - netWaitForEveryone(0); } void netBroadcastMyLogoff(bool bRestart) { - if (numplayers < 2) - return; - char *pPacket = packet; - PutPacketByte(pPacket, 7); - PutPacketDWord(pPacket, myconnectindex); - netSendPacketAll(packet, pPacket - packet); - netWaitForEveryone(0); - ready2send = 0; - gQuitGame = true; - if (bRestart) - gRestartGame = true; - netDeinitialize(); - netResetToSinglePlayer(); } void netBroadcastPlayerInfo(int nPlayer) @@ -560,103 +144,14 @@ void netBroadcastPlayerInfo(int nPlayer) pProfile->nWeaponSwitch = cl_weaponswitch; if (numplayers < 2) return; - char *pPacket = packet; - PutPacketByte(pPacket, 251); - PutPacketBuffer(pPacket, pProfile, sizeof(PROFILE)); - netSendPacketAll(packet, pPacket-packet); } void netBroadcastNewGame(void) { - if (numplayers < 2) - return; - gPacketStartGame.version = word_1328AC; - char *pPacket = packet; - PutPacketByte(pPacket, 252); - PutPacketDWord(pPacket, myconnectindex); - PutPacketBuffer(pPacket, &gPacketStartGame, sizeof(PKT_STARTGAME)); - netSendPacketAll(packet, pPacket-packet); -} - -void netBroadcastTaunt(int nPlayer, int nTaunt) -{ - UNREFERENCED_PARAMETER(nPlayer); - if (numplayers > 1) - { - char *pPacket = packet; - PutPacketByte(pPacket, 4); - PutPacketByte(pPacket, nTaunt); - netSendPacketAll(packet, pPacket-packet); - } - sndStartSample(4400+nTaunt, 128, 1, 0); -} - -void netBroadcastMessage(int nPlayer, const char *pzMessage) -{ - if (numplayers > 1) - { - int nSize = strlen(pzMessage); - char *pPacket = packet; - PutPacketByte(pPacket, 3); - PutPacketDWord(pPacket, nPlayer); - PutPacketBuffer(pPacket, pzMessage, nSize+1); - netSendPacketAll(packet, pPacket-packet); - } } void netWaitForEveryone(char a1) { - if (numplayers < 2) - return; - char *pPacket = packet; - PutPacketByte(pPacket, 250); - netSendPacketAll(packet, pPacket-packet); - gPlayerReady[myconnectindex]++; - int p; - do - { - if (inputState.EscapePressed() && a1) - Bexit(0); - gameHandleEvents(); - //faketimerhandler(); - for (p = connecthead; p >= 0; p = connectpoint2[p]) - if (gPlayerReady[p] < gPlayerReady[myconnectindex]) - break; - if (gRestartGame || gNetPlayers <= 1) - break; - } while (p >= 0); -} - -void sub_7AC28(const char *pzString) -{ - if (numplayers < 2) - return; - if (pzString) - { - int nLength = strlen(pzString); - if (nLength > 0) - { - char *pPacket = packet; - PutPacketByte(pPacket, 5); - PutPacketBuffer(pPacket, pzString, nLength+1); - netSendPacketAll(packet, pPacket-packet); - } - } -} - -void netSendEmptyPackets(void) -{ - ClockTicks nClock = totalclock; - char *pPacket = packet; - PutPacketByte(pPacket, 254); - for (int i = 0; i < 8; i++) - { - if (nClock <= totalclock) - { - nClock = totalclock+4; - netSendPacketAll(packet, pPacket-packet); - } - } } void netMasterUpdate(void) @@ -768,71 +263,6 @@ void netGetInput(void) else if (t < 0) gBufferJitter -= (1-t)>>2; } - if (gPacketMode == PACKETMODE_2) - { - char *pPacket = packet; - PutPacketByte(pPacket, 2); - if (((gNetFifoHead[myconnectindex]-1)&15) == 0) - { - if (myconnectindex == connecthead) - { - for (int p = connectpoint2[connecthead]; p >= 0; p = connectpoint2[p]) - PutPacketByte(pPacket, ClipRange(myMinLag[p], -128, 127)); - } - else - { - int t = myMinLag[connecthead]-otherMinLag; - if (klabs(t) > 2) - { - if (klabs(t) > 8) - { - if (t < 0) - t++; - t >>= 1; - } - else - t = ksgn(t); - totalclock -= t<<2; - otherMinLag += t; - myMinLag[connecthead] -= t; - } - } - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - myMinLag[p] = 0x7fffffff; - } - if (input.buttonFlags.byte) - input.syncFlags.buttonChange = 1; - if (input.keyFlags.word) - input.syncFlags.keyChange = 1; - if (input.useFlags.byte) - input.syncFlags.useChange = 1; - if (input.newWeapon) - input.syncFlags.weaponChange = 1; - if (input.q16mlook) - input.syncFlags.mlookChange = 1; - PutPacketByte(pPacket, input.syncFlags.byte); - PutPacketWord(pPacket, input.forward); - PutPacketDWord(pPacket, input.q16turn); - PutPacketWord(pPacket, input.strafe); - if (gInput.syncFlags.buttonChange) - PutPacketByte(pPacket, input.buttonFlags.byte); - if (gInput.syncFlags.keyChange) - PutPacketWord(pPacket, input.keyFlags.word); - if (gInput.syncFlags.useChange) - PutPacketByte(pPacket, input.useFlags.byte); - if (gInput.syncFlags.weaponChange) - PutPacketByte(pPacket, input.newWeapon); - if (gInput.syncFlags.mlookChange) - PutPacketDWord(pPacket, input.q16mlook); - while (gSendCheckTail != gCheckHead[myconnectindex]) - { - unsigned int *checkSum = gCheckFifo[gSendCheckTail&255][myconnectindex]; - PutPacketBuffer(pPacket, checkSum, 16); - gSendCheckTail++; - } - netSendPacketAll(packet, pPacket-packet); - return; - } if (myconnectindex != connecthead) { char *pPacket = packet; @@ -894,446 +324,17 @@ void netGetInput(void) void netInitialize(bool bConsole) { - netDeinitialize(); memset(gPlayerReady, 0, sizeof(gPlayerReady)); - sub_79760(); -#ifndef NETCODE_DISABLE - char buffer[128]; - gNetENetServer = gNetENetClient = NULL; - //gNetServerPacketHead = gNetServerPacketTail = 0; - gNetPacketHead = gNetPacketTail = 0; - if (gNetMode == NETWORK_NONE) - { - netResetToSinglePlayer(); - return; - } - if (!gHaveNetworking) - { - Printf("An error occurred while initializing ENet.\n"); - netResetToSinglePlayer(); - return; - } - if (gNetMode == NETWORK_SERVER) - { - memset(gNetPlayerPeer, 0, sizeof(gNetPlayerPeer)); - ENetEvent event; - gNetENetAddress.host = ENET_HOST_ANY; - gNetENetAddress.port = gNetPort; - gNetENetServer = enet_host_create(&gNetENetAddress, 8, BLOOD_ENET_CHANNEL_MAX, 0, 0); - if (!gNetENetServer) - { - Printf("An error occurred while trying to create an ENet server host.\n"); - netDeinitialize(); - netResetToSinglePlayer(); - return; - } - - numplayers = 1; - // Wait for clients - while (numplayers < gNetPlayers) - { - handleevents(); -#if 0 - if (quitevent) - { - netServerDisconnect(); - QuitGame(); - } -#endif - if (!bConsole && inputState.GetKeyStatus(sc_Escape)) - { - netServerDisconnect(); - netDeinitialize(); - netResetToSinglePlayer(); - return; - } - enet_host_service(gNetENetServer, NULL, 0); - if (enet_host_check_events(gNetENetServer, &event) > 0) - { - switch (event.type) - { - case ENET_EVENT_TYPE_CONNECT: - { - char ipaddr[32]; - - enet_address_get_host_ip(&event.peer->address, ipaddr, sizeof(ipaddr)); - Printf("Client connected: %s:%u\n", ipaddr, event.peer->address.port); - numplayers++; - for (int i = 1; i < kMaxPlayers; i++) - { - if (gNetPlayerPeer[i] == NULL) - { - gNetPlayerPeer[i] = event.peer; - break; - } - } - break; - } - case ENET_EVENT_TYPE_DISCONNECT: - { - char ipaddr[32]; - - enet_address_get_host_ip(&event.peer->address, ipaddr, sizeof(ipaddr)); - Printf("Client disconnected: %s:%u\n", ipaddr, event.peer->address.port); - numplayers--; - for (int i = 1; i < kMaxPlayers; i++) - { - if (gNetPlayerPeer[i] == event.peer) - { - gNetPlayerPeer[i] = NULL; - for (int j = kMaxPlayers-1; j > i; j--) - { - if (gNetPlayerPeer[j]) - { - gNetPlayerPeer[i] = gNetPlayerPeer[j]; - gNetPlayerPeer[j] = NULL; - break; - } - } - } - } - break; - } - default: - break; - } - } - enet_host_service(gNetENetServer, NULL, 0); - } - Printf("All clients connected\n"); - - dassert(numplayers >= 1); - - gInitialNetPlayers = gNetPlayers = numplayers; - connecthead = 0; - for (int i = 0; i < numplayers-1; i++) - connectpoint2[i] = i+1; - connectpoint2[numplayers-1] = -1; - - enet_host_service(gNetENetServer, NULL, 0); - - // Send connect info - char *pPacket = packet; - PutPacketByte(pPacket, BLOOD_SERVICE_CONNECTINFO); - PKT_CONNECTINFO connectinfo; - connectinfo.numplayers = numplayers; - connectinfo.connecthead = connecthead; - for (int i = 0; i < numplayers; i++) - connectinfo.connectpoint2[i] = connectpoint2[i]; - PutPacketBuffer(pPacket, &connectinfo, sizeof(connectinfo)); - ENetPacket *pEPacket = enet_packet_create(packet, pPacket-packet, ENET_PACKET_FLAG_RELIABLE); - enet_host_broadcast(gNetENetServer, BLOOD_ENET_SERVICE, pEPacket); - //enet_packet_destroy(pEPacket); - - enet_host_service(gNetENetServer, NULL, 0); - - // Send id - myconnectindex = 0; - for (int i = 1; i < numplayers; i++) - { - if (!gNetPlayerPeer[i]) - continue; - char *pPacket = packet; - PutPacketByte(pPacket, BLOOD_SERVICE_CONNECTID); - PutPacketByte(pPacket, i); - ENetPacket *pEPacket = enet_packet_create(packet, pPacket-packet, ENET_PACKET_FLAG_RELIABLE); - enet_peer_send(gNetPlayerPeer[i], BLOOD_ENET_SERVICE, pEPacket); - - enet_host_service(gNetENetServer, NULL, 0); - } - - enet_host_service(gNetENetServer, NULL, 0); - } - else if (gNetMode == NETWORK_CLIENT) - { - ENetEvent event; - sprintf(buffer, "Connecting to %s:%u", gNetAddress, gNetPort); - Printf("%s\n", buffer); - gNetENetClient = enet_host_create(NULL, 1, BLOOD_ENET_CHANNEL_MAX, 0, 0); - enet_address_set_host(&gNetENetAddress, gNetAddress); - gNetENetAddress.port = gNetPort; - gNetENetPeer = enet_host_connect(gNetENetClient, &gNetENetAddress, BLOOD_ENET_CHANNEL_MAX, 0); - if (!gNetENetPeer) - { - Printf("No available peers for initiating an ENet connection.\n"); - netDeinitialize(); - netResetToSinglePlayer(); - return; - } - if (enet_host_service(gNetENetClient, &event, 5000) > 0 && event.type == ENET_EVENT_TYPE_CONNECT) - Printf("Connected to %s:%i\n", gNetAddress, gNetPort); - else - { - Printf("Could not connect to %s:%i\n", gNetAddress, gNetPort); - netDeinitialize(); - return; - } - bool bWaitServer = true; - while (bWaitServer) - { - handleevents(); -#if 0 - if (quitevent) - { - netClientDisconnect(); - QuitGame(); - } -#endif - if (!bConsole && inputState.GetKeyStatus(sc_Escape)) - { - netClientDisconnect(); - netDeinitialize(); - netResetToSinglePlayer(); - return; - } - enet_host_service(gNetENetClient, NULL, 0); - if (enet_host_check_events(gNetENetClient, &event) > 0) - { - switch (event.type) - { - case ENET_EVENT_TYPE_DISCONNECT: - Printf("Lost connection to server\n"); - netDeinitialize(); - netResetToSinglePlayer(); - return; - case ENET_EVENT_TYPE_RECEIVE: - //Printf("NETEVENT\n"); - if (event.channelID == BLOOD_ENET_SERVICE) - { - char *pPacket = (char*)event.packet->data; - switch (GetPacketByte(pPacket)) - { - case BLOOD_SERVICE_CONNECTINFO: - { - PKT_CONNECTINFO *connectinfo = (PKT_CONNECTINFO*)pPacket; - gInitialNetPlayers = gNetPlayers = numplayers = connectinfo->numplayers; - connecthead = connectinfo->connecthead; - for (int i = 0; i < numplayers; i++) - connectpoint2[i] = connectinfo->connectpoint2[i]; - //Printf("BLOOD_SERVICE_CONNECTINFO\n"); - break; - } - case BLOOD_SERVICE_CONNECTID: - dassert(numplayers > 1); - myconnectindex = GetPacketByte(pPacket); - bWaitServer = false; - //Printf("BLOOD_SERVICE_CONNECTID\n"); - break; - } - } - enet_packet_destroy(event.packet); - break; - default: - break; - } - } - } - enet_host_service(gNetENetClient, NULL, 0); - Printf("Successfully connected to server\n"); - } - gNetENetInit = true; - gGameOptions.nGameType = 2; -#endif + netReset(); + netResetToSinglePlayer(); } void netDeinitialize(void) { -#ifndef NETCODE_DISABLE - if (!gNetENetInit) - return; - gNetENetInit = false; - if (gNetMode != NETWORK_NONE) - { - if (gNetENetServer) - { - netServerDisconnect(); - enet_host_destroy(gNetENetServer); - } - else if (gNetENetClient) - { - netClientDisconnect(); - enet_host_destroy(gNetENetClient); - } - enet_deinitialize(); - } - gNetENetServer = gNetENetClient = NULL; -#endif -} - -#ifndef NETCODE_DISABLE -void netPostEPacket(ENetPacket *pEPacket) -{ - //static int number; - //Printf("netPostEPacket %i\n", number++); - gNetPacketFifo[gNetPacketHead] = pEPacket; - gNetPacketHead = (gNetPacketHead+1)%kENetFifoSize; -} -#endif - -void netUpdate(void) -{ -#ifndef NETCODE_DISABLE - ENetEvent event; - if (gNetMode == NETWORK_NONE) - return; - - if (gNetENetServer) - { - enet_host_service(gNetENetServer, NULL, 0); - while (enet_host_check_events(gNetENetServer, &event) > 0) - { - switch (event.type) - { - case ENET_EVENT_TYPE_DISCONNECT: - { - int nPlayer; - for (nPlayer = connectpoint2[connecthead]; nPlayer >= 0; nPlayer = connectpoint2[nPlayer]) - if (gNetPlayerPeer[nPlayer] == event.peer) - break; - - for (int p = 0; p < kMaxPlayers; p++) - if (gNetPlayerPeer[p] == event.peer) - gNetPlayerPeer[p] = NULL; - if (nPlayer >= 0) - { - // TODO: Game most likely will go out of sync here... - char *pPacket = packet; - PutPacketByte(pPacket, 249); - PutPacketDWord(pPacket, nPlayer); - netSendPacketAll(packet, pPacket - packet); - netPlayerQuit(nPlayer); - netWaitForEveryone(0); - } - if (gNetPlayers <= 1) - { - netDeinitialize(); - netResetToSinglePlayer(); - return; - } - break; - } - case ENET_EVENT_TYPE_RECEIVE: - switch (event.channelID) - { - case BLOOD_ENET_SERVICE: - { - char *pPacket = (char*)event.packet->data; - if (GetPacketByte(pPacket) != BLOOD_SERVICE_SENDTOID) - ThrowError("Packet error\n"); - int nDest = GetPacketByte(pPacket); - int nSource = GetPacketByte(pPacket); - int nSize = event.packet->dataLength-3; - if (gNetPlayerPeer[nDest] != NULL) - { - ENetPacket *pNetPacket = enet_packet_create(NULL, nSize + 1, ENET_PACKET_FLAG_RELIABLE); - char *pPBuffer = (char*)pNetPacket->data; - PutPacketByte(pPBuffer, nSource); - PutPacketBuffer(pPBuffer, pPacket, nSize); - enet_peer_send(gNetPlayerPeer[nDest], BLOOD_ENET_GAME, pNetPacket); - enet_host_service(gNetENetServer, NULL, 0); - } - enet_packet_destroy(event.packet); - break; - } - case BLOOD_ENET_GAME: - netPostEPacket(event.packet); - break; - } - default: - break; - } - enet_host_service(gNetENetServer, NULL, 0); - } - enet_host_service(gNetENetServer, NULL, 0); - } - else if (gNetENetClient) - { - enet_host_service(gNetENetClient, NULL, 0); - while (enet_host_check_events(gNetENetClient, &event) > 0) - { - switch (event.type) - { - case ENET_EVENT_TYPE_DISCONNECT: - Printf("Lost connection to server\n"); - netDeinitialize(); - netResetToSinglePlayer(); - gQuitGame = gRestartGame = true; - return; - case ENET_EVENT_TYPE_RECEIVE: - switch (event.channelID) - { - case BLOOD_ENET_SERVICE: - { - ThrowError("Packet error\n"); - break; - } - case BLOOD_ENET_GAME: - netPostEPacket(event.packet); - break; - } - default: - break; - } - enet_host_service(gNetENetClient, NULL, 0); - } - enet_host_service(gNetENetClient, NULL, 0); - } -#endif -} - -void faketimerhandler(void) -{ -#ifndef NETCODE_DISABLE - if (gNetMode != NETWORK_NONE && gNetENetInit) - netUpdate(); -#endif - //if (gNetMode != NETWORK_NONE && gNetENetInit) - // enet_host_service(gNetMode == NETWORK_SERVER ? gNetENetServer : gNetENetClient, NULL, 0); } void netPlayerQuit(int nPlayer) { - char buffer[128]; - sprintf(buffer, "%s left the game with %d frags.", gProfile[nPlayer].name, gPlayer[nPlayer].fragCount); - viewSetMessage(buffer); - if (gamestate == GS_LEVEL) - { - seqKill(3, gPlayer[nPlayer].pSprite->extra); - actPostSprite(gPlayer[nPlayer].nSprite, kStatFree); - if (nPlayer == gViewIndex) - gViewIndex = myconnectindex; - gView = &gPlayer[gViewIndex]; - } - if (nPlayer == connecthead) - { - connecthead = connectpoint2[connecthead]; - //if (gPacketMode == PACKETMODE_1) - { - //byte_27B2CC = 1; - gQuitGame = true; - gRestartGame = true; - gNetPlayers = 1; - //gQuitRequest = 1; - } - } - else - { - for (int p = connecthead; p >= 0; p = connectpoint2[p]) - { - if (connectpoint2[p] == nPlayer) - connectpoint2[p] = connectpoint2[nPlayer]; - } -#ifndef NETCODE_DISABLE - gNetPlayerPeer[nPlayer] = NULL; -#endif - } - gNetPlayers--; - numplayers = ClipLow(numplayers-1, 1); - if (gNetPlayers <= 1) - { - netDeinitialize(); - netResetToSinglePlayer(); - } } END_BLD_NS diff --git a/source/blood/src/network.h b/source/blood/src/network.h index b86284e65..57304c5f7 100644 --- a/source/blood/src/network.h +++ b/source/blood/src/network.h @@ -138,13 +138,10 @@ inline void GetPacketBuffer(char *&p, void *pBuffer, int size) p += size; } -void sub_79760(void); +void netReset(void); void netResetToSinglePlayer(void); -void netBroadcastMessage(int nPlayer, const char *pzMessage); void netWaitForEveryone(char a1); -void sub_7AC28(const char *pzString); void netGetPackets(void); -void netBroadcastTaunt(int nPlayer, int nTaunt); void CalcGameChecksum(void); void netBroadcastPlayerLogoff(int nPlayer); void netBroadcastMyLogoff(bool bRestart); @@ -154,7 +151,6 @@ void netCheckSync(void); void netMasterUpdate(void); void netGetInput(void); void netPlayerQuit(int nPlayer); -void netUpdate(void); void netDeinitialize(void); void netBroadcastNewGame(void); diff --git a/source/blood/src/player.cpp b/source/blood/src/player.cpp index 3eba3e4f2..f39e65df4 100644 --- a/source/blood/src/player.cpp +++ b/source/blood/src/player.cpp @@ -957,13 +957,6 @@ char PickupItem(PLAYER *pPlayer, spritetype *pItem) { sprintf(buffer, "%s captured Red Flag!", gProfile[pPlayer->nPlayer].name); sndStartSample(8001, 255, 2, 0); viewSetMessage(buffer); -#if 0 - if (dword_28E3D4 == 3 && myconnectindex == connecthead) - { - sprintf(buffer, "frag A killed B\n"); - sub_7AC28(buffer); - } -#endif } } @@ -1001,13 +994,6 @@ char PickupItem(PLAYER *pPlayer, spritetype *pItem) { sprintf(buffer, "%s captured Blue Flag!", gProfile[pPlayer->nPlayer].name); sndStartSample(8000, 255, 2, 0); viewSetMessage(buffer); -#if 0 - if (dword_28E3D4 == 3 && myconnectindex == connecthead) - { - sprintf(buffer, "frag B killed A\n"); - sub_7AC28(buffer); - } -#endif } } } @@ -1842,12 +1828,6 @@ void playerFrag(PLAYER *pKiller, PLAYER *pVictim) dassert(nKiller >= 0 && nKiller < kMaxPlayers); int nVictim = pVictim->pSprite->type-kDudePlayer1; dassert(nVictim >= 0 && nVictim < kMaxPlayers); - if (myconnectindex == connecthead) - { - sprintf(buffer, "frag %d killed %d\n", pKiller->nPlayer+1, pVictim->nPlayer+1); - sub_7AC28(buffer); - buffer[0] = 0; - } if (nKiller == nVictim) { pVictim->fraggerId = -1; diff --git a/source/core/gamecontrol.cpp b/source/core/gamecontrol.cpp index 2a2c8eb61..a30016b04 100644 --- a/source/core/gamecontrol.cpp +++ b/source/core/gamecontrol.cpp @@ -113,8 +113,6 @@ int ShowStartupWindow(TArray &); FString GetGameFronUserFiles(); void InitFileSystem(TArray&); void I_SetWindowTitle(const char* caption); -void InitENet(); -void ShutdownENet(); void S_ParseSndInfo(); void I_DetectOS(void); void LoadScripts(); @@ -548,7 +546,6 @@ int GameMain() delete gi; gi = nullptr; } - InitENet(); DeleteStartupScreen(); PClass::StaticShutdown(); if (Args) delete Args; @@ -763,7 +760,6 @@ int RunGame() I_DetectOS(); userConfig.ProcessOptions(); G_LoadConfig(); - ShutdownENet(); auto usedgroups = SetupGame(); diff --git a/source/thirdparty/include/enet.h b/source/thirdparty/include/enet.h deleted file mode 100644 index 3a6bc3e93..000000000 --- a/source/thirdparty/include/enet.h +++ /dev/null @@ -1,5907 +0,0 @@ -/** - * include/enet.h - a Single-Header auto-generated variant of enet.h library. - * - * Usage: - * #define ENET_IMPLEMENTATION exactly in ONE source file right BEFORE including the library, like: - * - * #define ENET_IMPLEMENTATION - * #include - * - * License: - * The MIT License (MIT) - * - * Copyright (c) 2002-2016 Lee Salzman - * Copyright (c) 2017-2018 Vladyslav Hrytsenko, Dominik Madarász - * - * Permission is hereby granted, e_free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ -#ifndef ENET_INCLUDE_H -#define ENET_INCLUDE_H - -#include -#include -#include -#include - -#define ENET_VERSION_MAJOR 2 -#define ENET_VERSION_MINOR 2 -#define ENET_VERSION_PATCH 0 -#define ENET_VERSION_CREATE(major, minor, patch) (((major)<<16) | ((minor)<<8) | (patch)) -#define ENET_VERSION_GET_MAJOR(version) (((version)>>16)&0xFF) -#define ENET_VERSION_GET_MINOR(version) (((version)>>8)&0xFF) -#define ENET_VERSION_GET_PATCH(version) ((version)&0xFF) -#define ENET_VERSION ENET_VERSION_CREATE(ENET_VERSION_MAJOR, ENET_VERSION_MINOR, ENET_VERSION_PATCH) - -#define ENET_TIME_OVERFLOW 86400000 -#define ENET_TIME_LESS(a, b) ((a) - (b) >= ENET_TIME_OVERFLOW) -#define ENET_TIME_GREATER(a, b) ((b) - (a) >= ENET_TIME_OVERFLOW) -#define ENET_TIME_LESS_EQUAL(a, b) (! ENET_TIME_GREATER (a, b)) -#define ENET_TIME_GREATER_EQUAL(a, b) (! ENET_TIME_LESS (a, b)) -#define ENET_TIME_DIFFERENCE(a, b) ((a) - (b) >= ENET_TIME_OVERFLOW ? (b) - (a) : (a) - (b)) - -// =======================================================================// -// ! -// ! System differences -// ! -// =======================================================================// - -#if defined(_WIN32) - #if defined(_MSC_VER) && defined(ENET_IMPLEMENTATION) - #pragma warning (disable: 4267) // size_t to int conversion - #pragma warning (disable: 4244) // 64bit to 32bit int - #pragma warning (disable: 4018) // signed/unsigned mismatch - #pragma warning (disable: 4146) // unary minus operator applied to unsigned type - #endif - - #ifndef ENET_NO_PRAGMA_LINK - #pragma comment(lib, "ws2_32.lib") - #pragma comment(lib, "winmm.lib") - #endif - - #if _MSC_VER >= 1910 - /* It looks like there were changes as of Visual Studio 2017 and there are no 32/64 bit - versions of _InterlockedExchange[operation], only InterlockedExchange[operation] - (without leading underscore), so we have to distinguish between compiler versions */ - #define NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - #endif - - #ifdef __GNUC__ - #if (_WIN32_WINNT < 0x0501) - #undef _WIN32_WINNT - #define _WIN32_WINNT 0x0501 - #endif - #endif - - #include - #include - #include - - #include - - #if defined(_WIN32) && defined(_MSC_VER) - #if _MSC_VER < 1900 - typedef struct timespec { - long tv_sec; - long tv_nsec; - }; - #endif - #define CLOCK_MONOTONIC 0 - #endif - - typedef SOCKET ENetSocket; - #define ENET_SOCKET_NULL INVALID_SOCKET - - #define ENET_HOST_TO_NET_16(value) (htons(value)) - #define ENET_HOST_TO_NET_32(value) (htonl(value)) - - #define ENET_NET_TO_HOST_16(value) (ntohs(value)) - #define ENET_NET_TO_HOST_32(value) (ntohl(value)) - - typedef struct { - size_t dataLength; - void * data; - } ENetBuffer; - - #define ENET_CALLBACK __cdecl - - #ifdef ENET_DLL - #ifdef ENET_IMPLEMENTATION - #define ENET_API __declspec( dllexport ) - #else - #define ENET_API __declspec( dllimport ) - #endif // ENET_IMPLEMENTATION - #else - #define ENET_API extern - #endif // ENET_DLL - - typedef fd_set ENetSocketSet; - - #define ENET_SOCKETSET_EMPTY(sockset) FD_ZERO(&(sockset)) - #define ENET_SOCKETSET_ADD(sockset, socket) FD_SET(socket, &(sockset)) - #define ENET_SOCKETSET_REMOVE(sockset, socket) FD_CLR(socket, &(sockset)) - #define ENET_SOCKETSET_CHECK(sockset, socket) FD_ISSET(socket, &(sockset)) -#else - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - #include - - #ifdef __APPLE__ - #include - #include - #include - #endif - - #ifndef MSG_NOSIGNAL - #define MSG_NOSIGNAL 0 - #endif - - #ifdef MSG_MAXIOVLEN - #define ENET_BUFFER_MAXIMUM MSG_MAXIOVLEN - #endif - - typedef int ENetSocket; - - #define ENET_SOCKET_NULL -1 - - #define ENET_HOST_TO_NET_16(value) (htons(value)) /**< macro that converts host to net byte-order of a 16-bit value */ - #define ENET_HOST_TO_NET_32(value) (htonl(value)) /**< macro that converts host to net byte-order of a 32-bit value */ - - #define ENET_NET_TO_HOST_16(value) (ntohs(value)) /**< macro that converts net to host byte-order of a 16-bit value */ - #define ENET_NET_TO_HOST_32(value) (ntohl(value)) /**< macro that converts net to host byte-order of a 32-bit value */ - - typedef struct { - void * data; - size_t dataLength; - } ENetBuffer; - - #define ENET_CALLBACK - #define ENET_API extern - - typedef fd_set ENetSocketSet; - - #define ENET_SOCKETSET_EMPTY(sockset) FD_ZERO(&(sockset)) - #define ENET_SOCKETSET_ADD(sockset, socket) FD_SET(socket, &(sockset)) - #define ENET_SOCKETSET_REMOVE(sockset, socket) FD_CLR(socket, &(sockset)) - #define ENET_SOCKETSET_CHECK(sockset, socket) FD_ISSET(socket, &(sockset)) -#endif - -#ifndef ENET_BUFFER_MAXIMUM -#define ENET_BUFFER_MAXIMUM (1 + 2 * ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS) -#endif - -#define ENET_MAX(x, y) ((x) > (y) ? (x) : (y)) -#define ENET_MIN(x, y) ((x) < (y) ? (x) : (y)) - -#define ENET_IPV6 1 -#define ENET_HOST_ANY in6addr_any -#define ENET_HOST_BROADCAST 0xFFFFFFFFU -#define ENET_PORT_ANY 0 - -#ifdef __cplusplus -extern "C" { -#endif - -// =======================================================================// -// ! -// ! Basic stuff -// ! -// =======================================================================// - - typedef uint8_t enet_uint8; /**< unsigned 8-bit type */ - typedef uint16_t enet_uint16; /**< unsigned 16-bit type */ - typedef uint32_t enet_uint32; /**< unsigned 32-bit type */ - typedef uint64_t enet_uint64; /**< unsigned 64-bit type */ - - typedef enet_uint32 ENetVersion; - - - typedef struct _ENetCallbacks { - void *(ENET_CALLBACK *e_malloc) (size_t size); - void (ENET_CALLBACK *e_free) (void *memory); - void (ENET_CALLBACK *no_memory) (void); - } ENetCallbacks; - - extern void *enet_malloc(size_t); - extern void enet_free(void *); - -// =======================================================================// -// ! -// ! List -// ! -// =======================================================================// - - typedef struct _ENetListNode { - struct _ENetListNode *next; - struct _ENetListNode *previous; - } ENetListNode; - - typedef ENetListNode *ENetListIterator; - - typedef struct _ENetList { - ENetListNode sentinel; - } ENetList; - - extern ENetListIterator enet_list_insert(ENetListIterator, void *); - extern ENetListIterator enet_list_move(ENetListIterator, void *, void *); - - extern void *enet_list_remove(ENetListIterator); - extern void enet_list_clear(ENetList *); - extern size_t enet_list_size(ENetList *); - - #define enet_list_begin(list) ((list)->sentinel.next) - #define enet_list_end(list) (&(list)->sentinel) - #define enet_list_empty(list) (enet_list_begin(list) == enet_list_end(list)) - #define enet_list_next(iterator) ((iterator)->next) - #define enet_list_previous(iterator) ((iterator)->previous) - #define enet_list_front(list) ((void *)(list)->sentinel.next) - #define enet_list_back(list) ((void *)(list)->sentinel.previous) - - -// =======================================================================// -// ! -// ! Protocol -// ! -// =======================================================================// - - enum { - ENET_PROTOCOL_MINIMUM_MTU = 576, - ENET_PROTOCOL_MAXIMUM_MTU = 4096, - ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS = 32, - ENET_PROTOCOL_MINIMUM_WINDOW_SIZE = 4096, - ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE = 65536, - ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT = 1, - ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT = 255, - ENET_PROTOCOL_MAXIMUM_PEER_ID = 0xFFF, - ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT = 1024 * 1024 - }; - - typedef enum _ENetProtocolCommand { - ENET_PROTOCOL_COMMAND_NONE = 0, - ENET_PROTOCOL_COMMAND_ACKNOWLEDGE = 1, - ENET_PROTOCOL_COMMAND_CONNECT = 2, - ENET_PROTOCOL_COMMAND_VERIFY_CONNECT = 3, - ENET_PROTOCOL_COMMAND_DISCONNECT = 4, - ENET_PROTOCOL_COMMAND_PING = 5, - ENET_PROTOCOL_COMMAND_SEND_RELIABLE = 6, - ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE = 7, - ENET_PROTOCOL_COMMAND_SEND_FRAGMENT = 8, - ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED = 9, - ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT = 10, - ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE = 11, - ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT = 12, - ENET_PROTOCOL_COMMAND_COUNT = 13, - - ENET_PROTOCOL_COMMAND_MASK = 0x0F - } ENetProtocolCommand; - - typedef enum _ENetProtocolFlag { - ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE = (1 << 7), - ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED = (1 << 6), - - ENET_PROTOCOL_HEADER_FLAG_COMPRESSED = (1 << 14), - ENET_PROTOCOL_HEADER_FLAG_SENT_TIME = (1 << 15), - ENET_PROTOCOL_HEADER_FLAG_MASK = ENET_PROTOCOL_HEADER_FLAG_COMPRESSED | ENET_PROTOCOL_HEADER_FLAG_SENT_TIME, - - ENET_PROTOCOL_HEADER_SESSION_MASK = (3 << 12), - ENET_PROTOCOL_HEADER_SESSION_SHIFT = 12 - } ENetProtocolFlag; - - #ifdef _MSC_VER - #pragma pack(push, 1) - #define ENET_PACKED - #elif defined(__GNUC__) || defined(__clang__) - #define ENET_PACKED __attribute__ ((packed)) - #else - #define ENET_PACKED - #endif - - typedef struct _ENetProtocolHeader { - enet_uint16 peerID; - enet_uint16 sentTime; - } ENET_PACKED ENetProtocolHeader; - - typedef struct _ENetProtocolCommandHeader { - enet_uint8 command; - enet_uint8 channelID; - enet_uint16 reliableSequenceNumber; - } ENET_PACKED ENetProtocolCommandHeader; - - typedef struct _ENetProtocolAcknowledge { - ENetProtocolCommandHeader header; - enet_uint16 receivedReliableSequenceNumber; - enet_uint16 receivedSentTime; - } ENET_PACKED ENetProtocolAcknowledge; - - typedef struct _ENetProtocolConnect { - ENetProtocolCommandHeader header; - enet_uint16 outgoingPeerID; - enet_uint8 incomingSessionID; - enet_uint8 outgoingSessionID; - enet_uint32 mtu; - enet_uint32 windowSize; - enet_uint32 channelCount; - enet_uint32 incomingBandwidth; - enet_uint32 outgoingBandwidth; - enet_uint32 packetThrottleInterval; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - enet_uint32 connectID; - enet_uint32 data; - } ENET_PACKED ENetProtocolConnect; - - typedef struct _ENetProtocolVerifyConnect { - ENetProtocolCommandHeader header; - enet_uint16 outgoingPeerID; - enet_uint8 incomingSessionID; - enet_uint8 outgoingSessionID; - enet_uint32 mtu; - enet_uint32 windowSize; - enet_uint32 channelCount; - enet_uint32 incomingBandwidth; - enet_uint32 outgoingBandwidth; - enet_uint32 packetThrottleInterval; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - enet_uint32 connectID; - } ENET_PACKED ENetProtocolVerifyConnect; - - typedef struct _ENetProtocolBandwidthLimit { - ENetProtocolCommandHeader header; - enet_uint32 incomingBandwidth; - enet_uint32 outgoingBandwidth; - } ENET_PACKED ENetProtocolBandwidthLimit; - - typedef struct _ENetProtocolThrottleConfigure { - ENetProtocolCommandHeader header; - enet_uint32 packetThrottleInterval; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - } ENET_PACKED ENetProtocolThrottleConfigure; - - typedef struct _ENetProtocolDisconnect { - ENetProtocolCommandHeader header; - enet_uint32 data; - } ENET_PACKED ENetProtocolDisconnect; - - typedef struct _ENetProtocolPing { - ENetProtocolCommandHeader header; - } ENET_PACKED ENetProtocolPing; - - typedef struct _ENetProtocolSendReliable { - ENetProtocolCommandHeader header; - enet_uint16 dataLength; - } ENET_PACKED ENetProtocolSendReliable; - - typedef struct _ENetProtocolSendUnreliable { - ENetProtocolCommandHeader header; - enet_uint16 unreliableSequenceNumber; - enet_uint16 dataLength; - } ENET_PACKED ENetProtocolSendUnreliable; - - typedef struct _ENetProtocolSendUnsequenced { - ENetProtocolCommandHeader header; - enet_uint16 unsequencedGroup; - enet_uint16 dataLength; - } ENET_PACKED ENetProtocolSendUnsequenced; - - typedef struct _ENetProtocolSendFragment { - ENetProtocolCommandHeader header; - enet_uint16 startSequenceNumber; - enet_uint16 dataLength; - enet_uint32 fragmentCount; - enet_uint32 fragmentNumber; - enet_uint32 totalLength; - enet_uint32 fragmentOffset; - } ENET_PACKED ENetProtocolSendFragment; - - typedef union _ENetProtocol { - ENetProtocolCommandHeader header; - ENetProtocolAcknowledge acknowledge; - ENetProtocolConnect connect; - ENetProtocolVerifyConnect verifyConnect; - ENetProtocolDisconnect disconnect; - ENetProtocolPing ping; - ENetProtocolSendReliable sendReliable; - ENetProtocolSendUnreliable sendUnreliable; - ENetProtocolSendUnsequenced sendUnsequenced; - ENetProtocolSendFragment sendFragment; - ENetProtocolBandwidthLimit bandwidthLimit; - ENetProtocolThrottleConfigure throttleConfigure; - } ENET_PACKED ENetProtocol; - - #ifdef _MSC_VER - #pragma pack(pop) - #endif - -// =======================================================================// -// ! -// ! General ENet structs/enums -// ! -// =======================================================================// - - typedef enum _ENetSocketType { - ENET_SOCKET_TYPE_STREAM = 1, - ENET_SOCKET_TYPE_DATAGRAM = 2 - } ENetSocketType; - - typedef enum _ENetSocketWait { - ENET_SOCKET_WAIT_NONE = 0, - ENET_SOCKET_WAIT_SEND = (1 << 0), - ENET_SOCKET_WAIT_RECEIVE = (1 << 1), - ENET_SOCKET_WAIT_INTERRUPT = (1 << 2) - } ENetSocketWait; - - typedef enum _ENetSocketOption { - ENET_SOCKOPT_NONBLOCK = 1, - ENET_SOCKOPT_BROADCAST = 2, - ENET_SOCKOPT_RCVBUF = 3, - ENET_SOCKOPT_SNDBUF = 4, - ENET_SOCKOPT_REUSEADDR = 5, - ENET_SOCKOPT_RCVTIMEO = 6, - ENET_SOCKOPT_SNDTIMEO = 7, - ENET_SOCKOPT_ERROR = 8, - ENET_SOCKOPT_NODELAY = 9, - ENET_SOCKOPT_IPV6_V6ONLY = 10, - } ENetSocketOption; - - typedef enum _ENetSocketShutdown { - ENET_SOCKET_SHUTDOWN_READ = 0, - ENET_SOCKET_SHUTDOWN_WRITE = 1, - ENET_SOCKET_SHUTDOWN_READ_WRITE = 2 - } ENetSocketShutdown; - - /** - * Portable internet address structure. - * - * The host must be specified in network byte-order, and the port must be in host - * byte-order. The constant ENET_HOST_ANY may be used to specify the default - * server host. The constant ENET_HOST_BROADCAST may be used to specify the - * broadcast address (255.255.255.255). This makes sense for enet_host_connect, - * but not for enet_host_create. Once a server responds to a broadcast, the - * address is updated from ENET_HOST_BROADCAST to the server's actual IP address. - */ - struct ENetAddress { - struct in6_addr host; - enet_uint16 port; - enet_uint16 sin6_scope_id; - }; - - #define in6_equal(in6_addr_a, in6_addr_b) (memcmp(&in6_addr_a, &in6_addr_b, sizeof(struct in6_addr)) == 0) - - /** - * Packet flag bit constants. - * - * The host must be specified in network byte-order, and the port must be in - * host byte-order. The constant ENET_HOST_ANY may be used to specify the - * default server host. - * - * @sa ENetPacket - */ - typedef enum _ENetPacketFlag { - ENET_PACKET_FLAG_RELIABLE = (1 << 0), /** packet must be received by the target peer and resend attempts should be made until the packet is delivered */ - ENET_PACKET_FLAG_UNSEQUENCED = (1 << 1), /** packet will not be sequenced with other packets not supported for reliable packets */ - ENET_PACKET_FLAG_NO_ALLOCATE = (1 << 2), /** packet will not allocate data, and user must supply it instead */ - ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT = (1 << 3), /** packet will be fragmented using unreliable (instead of reliable) sends if it exceeds the MTU */ - ENET_PACKET_FLAG_SENT = (1 << 8), /** whether the packet has been sent from all queues it has been entered into */ - } ENetPacketFlag; - - typedef void (ENET_CALLBACK *ENetPacketFreeCallback)(void *); - - /** - * ENet packet structure. - * - * An ENet data packet that may be sent to or received from a peer. The shown - * fields should only be read and never modified. The data field contains the - * allocated data for the packet. The dataLength fields specifies the length - * of the allocated data. The flags field is either 0 (specifying no flags), - * or a bitwise-or of any combination of the following flags: - * - * ENET_PACKET_FLAG_RELIABLE - packet must be received by the target peer and resend attempts should be made until the packet is delivered - * ENET_PACKET_FLAG_UNSEQUENCED - packet will not be sequenced with other packets (not supported for reliable packets) - * ENET_PACKET_FLAG_NO_ALLOCATE - packet will not allocate data, and user must supply it instead - * ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT - packet will be fragmented using unreliable (instead of reliable) sends if it exceeds the MTU - * ENET_PACKET_FLAG_SENT - whether the packet has been sent from all queues it has been entered into - * @sa ENetPacketFlag - */ - struct ENetPacket { - size_t referenceCount; /**< internal use only */ - enet_uint32 flags; /**< bitwise-or of ENetPacketFlag constants */ - enet_uint8 * data; /**< allocated data for packet */ - size_t dataLength; /**< length of data */ - ENetPacketFreeCallback freeCallback; /**< function to be called when the packet is no longer in use */ - void * userData; /**< application private data, may be freely modified */ - }; - - typedef struct _ENetAcknowledgement { - ENetListNode acknowledgementList; - enet_uint32 sentTime; - ENetProtocol command; - } ENetAcknowledgement; - - typedef struct _ENetOutgoingCommand { - ENetListNode outgoingCommandList; - enet_uint16 reliableSequenceNumber; - enet_uint16 unreliableSequenceNumber; - enet_uint32 sentTime; - enet_uint32 roundTripTimeout; - enet_uint32 roundTripTimeoutLimit; - enet_uint32 fragmentOffset; - enet_uint16 fragmentLength; - enet_uint16 sendAttempts; - ENetProtocol command; - ENetPacket * packet; - } ENetOutgoingCommand; - - typedef struct _ENetIncomingCommand { - ENetListNode incomingCommandList; - enet_uint16 reliableSequenceNumber; - enet_uint16 unreliableSequenceNumber; - ENetProtocol command; - enet_uint32 fragmentCount; - enet_uint32 fragmentsRemaining; - enet_uint32 *fragments; - ENetPacket * packet; - } ENetIncomingCommand; - - typedef enum _ENetPeerState { - ENET_PEER_STATE_DISCONNECTED = 0, - ENET_PEER_STATE_CONNECTING = 1, - ENET_PEER_STATE_ACKNOWLEDGING_CONNECT = 2, - ENET_PEER_STATE_CONNECTION_PENDING = 3, - ENET_PEER_STATE_CONNECTION_SUCCEEDED = 4, - ENET_PEER_STATE_CONNECTED = 5, - ENET_PEER_STATE_DISCONNECT_LATER = 6, - ENET_PEER_STATE_DISCONNECTING = 7, - ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT = 8, - ENET_PEER_STATE_ZOMBIE = 9 - } ENetPeerState; - - enum { - ENET_HOST_RECEIVE_BUFFER_SIZE = 256 * 1024, - ENET_HOST_SEND_BUFFER_SIZE = 256 * 1024, - ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL = 1000, - ENET_HOST_DEFAULT_MTU = 1400, - ENET_HOST_DEFAULT_MAXIMUM_PACKET_SIZE = 32 * 1024 * 1024, - ENET_HOST_DEFAULT_MAXIMUM_WAITING_DATA = 32 * 1024 * 1024, - - ENET_PEER_DEFAULT_ROUND_TRIP_TIME = 500, - ENET_PEER_DEFAULT_PACKET_THROTTLE = 32, - ENET_PEER_PACKET_THROTTLE_SCALE = 32, - ENET_PEER_PACKET_THROTTLE_COUNTER = 7, - ENET_PEER_PACKET_THROTTLE_ACCELERATION = 2, - ENET_PEER_PACKET_THROTTLE_DECELERATION = 2, - ENET_PEER_PACKET_THROTTLE_INTERVAL = 5000, - ENET_PEER_PACKET_LOSS_SCALE = (1 << 16), - ENET_PEER_PACKET_LOSS_INTERVAL = 10000, - ENET_PEER_WINDOW_SIZE_SCALE = 64 * 1024, - ENET_PEER_TIMEOUT_LIMIT = 32, - ENET_PEER_TIMEOUT_MINIMUM = 5000, - ENET_PEER_TIMEOUT_MAXIMUM = 30000, - ENET_PEER_PING_INTERVAL = 500, - ENET_PEER_UNSEQUENCED_WINDOWS = 64, - ENET_PEER_UNSEQUENCED_WINDOW_SIZE = 1024, - ENET_PEER_FREE_UNSEQUENCED_WINDOWS = 32, - ENET_PEER_RELIABLE_WINDOWS = 16, - ENET_PEER_RELIABLE_WINDOW_SIZE = 0x1000, - ENET_PEER_FREE_RELIABLE_WINDOWS = 8 - }; - - typedef struct _ENetChannel { - enet_uint16 outgoingReliableSequenceNumber; - enet_uint16 outgoingUnreliableSequenceNumber; - enet_uint16 usedReliableWindows; - enet_uint16 reliableWindows[ENET_PEER_RELIABLE_WINDOWS]; - enet_uint16 incomingReliableSequenceNumber; - enet_uint16 incomingUnreliableSequenceNumber; - ENetList incomingReliableCommands; - ENetList incomingUnreliableCommands; - } ENetChannel; - - /** - * An ENet peer which data packets may be sent or received from. - * - * No fields should be modified unless otherwise specified. - */ - struct ENetPeer { - ENetListNode dispatchList; - struct ENetHost *host; - enet_uint16 outgoingPeerID; - enet_uint16 incomingPeerID; - enet_uint32 connectID; - enet_uint8 outgoingSessionID; - enet_uint8 incomingSessionID; - ENetAddress address; /**< Internet address of the peer */ - void * data; /**< Application private data, may be freely modified */ - ENetPeerState state; - ENetChannel * channels; - size_t channelCount; /**< Number of channels allocated for communication with peer */ - enet_uint32 incomingBandwidth; /**< Downstream bandwidth of the client in bytes/second */ - enet_uint32 outgoingBandwidth; /**< Upstream bandwidth of the client in bytes/second */ - enet_uint32 incomingBandwidthThrottleEpoch; - enet_uint32 outgoingBandwidthThrottleEpoch; - enet_uint32 incomingDataTotal; - enet_uint64 totalDataReceived; - enet_uint32 outgoingDataTotal; - enet_uint64 totalDataSent; - enet_uint32 lastSendTime; - enet_uint32 lastReceiveTime; - enet_uint32 nextTimeout; - enet_uint32 earliestTimeout; - enet_uint32 packetLossEpoch; - enet_uint32 packetsSent; - enet_uint64 totalPacketsSent; /**< total number of packets sent during a session */ - enet_uint32 packetsLost; - enet_uint32 totalPacketsLost; /**< total number of packets lost during a session */ - enet_uint32 packetLoss; /**< mean packet loss of reliable packets as a ratio with respect to the constant ENET_PEER_PACKET_LOSS_SCALE */ - enet_uint32 packetLossVariance; - enet_uint32 packetThrottle; - enet_uint32 packetThrottleLimit; - enet_uint32 packetThrottleCounter; - enet_uint32 packetThrottleEpoch; - enet_uint32 packetThrottleAcceleration; - enet_uint32 packetThrottleDeceleration; - enet_uint32 packetThrottleInterval; - enet_uint32 pingInterval; - enet_uint32 timeoutLimit; - enet_uint32 timeoutMinimum; - enet_uint32 timeoutMaximum; - enet_uint32 lastRoundTripTime; - enet_uint32 lowestRoundTripTime; - enet_uint32 lastRoundTripTimeVariance; - enet_uint32 highestRoundTripTimeVariance; - enet_uint32 roundTripTime; /**< mean round trip time (RTT), in milliseconds, between sending a reliable packet and receiving its acknowledgement */ - enet_uint32 roundTripTimeVariance; - enet_uint32 mtu; - enet_uint32 windowSize; - enet_uint32 reliableDataInTransit; - enet_uint16 outgoingReliableSequenceNumber; - ENetList acknowledgements; - ENetList sentReliableCommands; - ENetList sentUnreliableCommands; - ENetList outgoingReliableCommands; - ENetList outgoingUnreliableCommands; - ENetList dispatchedCommands; - int needsDispatch; - enet_uint16 incomingUnsequencedGroup; - enet_uint16 outgoingUnsequencedGroup; - enet_uint32 unsequencedWindow[ENET_PEER_UNSEQUENCED_WINDOW_SIZE / 32]; - enet_uint32 eventData; - size_t totalWaitingData; - }; - - /** An ENet packet compressor for compressing UDP packets before socket sends or receives. */ - typedef struct _ENetCompressor { - /** Context data for the compressor. Must be non-NULL. */ - void *context; - - /** Compresses from inBuffers[0:inBufferCount-1], containing inLimit bytes, to outData, outputting at most outLimit bytes. Should return 0 on failure. */ - size_t(ENET_CALLBACK * compress) (void *context, const ENetBuffer * inBuffers, size_t inBufferCount, size_t inLimit, enet_uint8 * outData, size_t outLimit); - - /** Decompresses from inData, containing inLimit bytes, to outData, outputting at most outLimit bytes. Should return 0 on failure. */ - size_t(ENET_CALLBACK * decompress) (void *context, const enet_uint8 * inData, size_t inLimit, enet_uint8 * outData, size_t outLimit); - - /** Destroys the context when compression is disabled or the host is destroyed. May be NULL. */ - void (ENET_CALLBACK * destroy)(void *context); - } ENetCompressor; - - /** Callback that computes the checksum of the data held in buffers[0:bufferCount-1] */ - typedef enet_uint32 (ENET_CALLBACK * ENetChecksumCallback)(const ENetBuffer *buffers, size_t bufferCount); - - /** Callback for intercepting received raw UDP packets. Should return 1 to intercept, 0 to ignore, or -1 to propagate an error. */ - typedef int (ENET_CALLBACK * ENetInterceptCallback)(struct ENetHost *host, void *event); - - /** An ENet host for communicating with peers. - * - * No fields should be modified unless otherwise stated. - * - * @sa enet_host_create() - * @sa enet_host_destroy() - * @sa enet_host_connect() - * @sa enet_host_service() - * @sa enet_host_flush() - * @sa enet_host_broadcast() - * @sa enet_host_compress() - * @sa enet_host_channel_limit() - * @sa enet_host_bandwidth_limit() - * @sa enet_host_bandwidth_throttle() - */ - struct ENetHost { - ENetSocket socket; - ENetAddress address; /**< Internet address of the host */ - enet_uint32 incomingBandwidth; /**< downstream bandwidth of the host */ - enet_uint32 outgoingBandwidth; /**< upstream bandwidth of the host */ - enet_uint32 bandwidthThrottleEpoch; - enet_uint32 mtu; - enet_uint32 randomSeed; - int recalculateBandwidthLimits; - ENetPeer * peers; /**< array of peers allocated for this host */ - size_t peerCount; /**< number of peers allocated for this host */ - size_t channelLimit; /**< maximum number of channels allowed for connected peers */ - enet_uint32 serviceTime; - ENetList dispatchQueue; - int continueSending; - size_t packetSize; - enet_uint16 headerFlags; - ENetProtocol commands[ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS]; - size_t commandCount; - ENetBuffer buffers[ENET_BUFFER_MAXIMUM]; - size_t bufferCount; - ENetChecksumCallback checksum; /**< callback the user can set to enable packet checksums for this host */ - ENetCompressor compressor; - enet_uint8 packetData[2][ENET_PROTOCOL_MAXIMUM_MTU]; - ENetAddress receivedAddress; - enet_uint8 * receivedData; - size_t receivedDataLength; - enet_uint32 totalSentData; /**< total data sent, user should reset to 0 as needed to prevent overflow */ - enet_uint32 totalSentPackets; /**< total UDP packets sent, user should reset to 0 as needed to prevent overflow */ - enet_uint32 totalReceivedData; /**< total data received, user should reset to 0 as needed to prevent overflow */ - enet_uint32 totalReceivedPackets; /**< total UDP packets received, user should reset to 0 as needed to prevent overflow */ - ENetInterceptCallback intercept; /**< callback the user can set to intercept received raw UDP packets */ - size_t connectedPeers; - size_t bandwidthLimitedPeers; - size_t duplicatePeers; /**< optional number of allowed peers from duplicate IPs, defaults to ENET_PROTOCOL_MAXIMUM_PEER_ID */ - size_t maximumPacketSize; /**< the maximum allowable packet size that may be sent or received on a peer */ - size_t maximumWaitingData; /**< the maximum aggregate amount of buffer space a peer may use waiting for packets to be delivered */ - }; - - /** - * An ENet event type, as specified in @ref ENetEvent. - */ - typedef enum _ENetEventType { - /** no event occurred within the specified time limit */ - ENET_EVENT_TYPE_NONE = 0, - - /** a connection request initiated by enet_host_connect has completed. - * The peer field contains the peer which successfully connected. - */ - ENET_EVENT_TYPE_CONNECT = 1, - - /** a peer has disconnected. This event is generated on a successful - * completion of a disconnect initiated by enet_peer_disconnect, if - * a peer has timed out. The peer field contains the peer - * which disconnected. The data field contains user supplied data - * describing the disconnection, or 0, if none is available. - */ - ENET_EVENT_TYPE_DISCONNECT = 2, - - /** a packet has been received from a peer. The peer field specifies the - * peer which sent the packet. The channelID field specifies the channel - * number upon which the packet was received. The packet field contains - * the packet that was received; this packet must be destroyed with - * enet_packet_destroy after use. - */ - ENET_EVENT_TYPE_RECEIVE = 3, - - /** a peer is disconnected because the host didn't receive the acknowledgment - * packet within certain maximum time out. The reason could be because of bad - * network connection or host crashed. - */ - ENET_EVENT_TYPE_DISCONNECT_TIMEOUT = 4, - } ENetEventType; - - /** - * An ENet event as returned by enet_host_service(). - * - * @sa enet_host_service - */ - struct ENetEvent { - ENetEventType type; /**< type of the event */ - ENetPeer * peer; /**< peer that generated a connect, disconnect or receive event */ - enet_uint8 channelID; /**< channel on the peer that generated the event, if appropriate */ - enet_uint32 data; /**< data associated with the event, if appropriate */ - ENetPacket * packet; /**< packet associated with the event, if appropriate */ - }; - -// =======================================================================// -// ! -// ! Public API -// ! -// =======================================================================// - - /** - * Initializes ENet globally. Must be called prior to using any functions in ENet. - * @returns 0 on success, < 0 on failure - */ - ENET_API int enet_initialize(void); - - /** - * Initializes ENet globally and supplies user-overridden callbacks. Must be called prior to using any functions in ENet. Do not use enet_initialize() if you use this variant. Make sure the ENetCallbacks structure is zeroed out so that any additional callbacks added in future versions will be properly ignored. - * - * @param version the constant ENET_VERSION should be supplied so ENet knows which version of ENetCallbacks struct to use - * @param inits user-overridden callbacks where any NULL callbacks will use ENet's defaults - * @returns 0 on success, < 0 on failure - */ - ENET_API int enet_initialize_with_callbacks(ENetVersion version, const ENetCallbacks * inits); - - /** - * Shuts down ENet globally. Should be called when a program that has initialized ENet exits. - */ - ENET_API void enet_deinitialize(void); - - /** - * Gives the linked version of the ENet library. - * @returns the version number - */ - ENET_API ENetVersion enet_linked_version(void); - - /** Returns the monotonic time in milliseconds. Its initial value is unspecified unless otherwise set. */ - ENET_API enet_uint32 enet_time_get(void); - - /** ENet socket functions */ - ENET_API ENetSocket enet_socket_create(ENetSocketType); - ENET_API int enet_socket_bind(ENetSocket, const ENetAddress *); - ENET_API int enet_socket_get_address(ENetSocket, ENetAddress *); - ENET_API int enet_socket_listen(ENetSocket, int); - ENET_API ENetSocket enet_socket_accept(ENetSocket, ENetAddress *); - ENET_API int enet_socket_connect(ENetSocket, const ENetAddress *); - ENET_API int enet_socket_send(ENetSocket, const ENetAddress *, const ENetBuffer *, size_t); - ENET_API int enet_socket_receive(ENetSocket, ENetAddress *, ENetBuffer *, size_t); - ENET_API int enet_socket_wait(ENetSocket, enet_uint32 *, enet_uint64); - ENET_API int enet_socket_set_option(ENetSocket, ENetSocketOption, int); - ENET_API int enet_socket_get_option(ENetSocket, ENetSocketOption, int *); - ENET_API int enet_socket_shutdown(ENetSocket, ENetSocketShutdown); - ENET_API void enet_socket_destroy(ENetSocket); - ENET_API int enet_socketset_select(ENetSocket, ENetSocketSet *, ENetSocketSet *, enet_uint32); - - /** Attempts to parse the printable form of the IP address in the parameter hostName - and sets the host field in the address parameter if successful. - @param address destination to store the parsed IP address - @param hostName IP address to parse - @retval 0 on success - @retval < 0 on failure - @returns the address of the given hostName in address on success - */ - ENET_API int enet_address_set_host_ip(ENetAddress * address, const char * hostName); - - /** Attempts to resolve the host named by the parameter hostName and sets - the host field in the address parameter if successful. - @param address destination to store resolved address - @param hostName host name to lookup - @retval 0 on success - @retval < 0 on failure - @returns the address of the given hostName in address on success - */ - ENET_API int enet_address_set_host(ENetAddress * address, const char * hostName); - - /** Gives the printable form of the IP address specified in the address parameter. - @param address address printed - @param hostName destination for name, must not be NULL - @param nameLength maximum length of hostName. - @returns the null-terminated name of the host in hostName on success - @retval 0 on success - @retval < 0 on failure - */ - ENET_API int enet_address_get_host_ip(const ENetAddress * address, char * hostName, size_t nameLength); - - /** Attempts to do a reverse lookup of the host field in the address parameter. - @param address address used for reverse lookup - @param hostName destination for name, must not be NULL - @param nameLength maximum length of hostName. - @returns the null-terminated name of the host in hostName on success - @retval 0 on success - @retval < 0 on failure - */ - ENET_API int enet_address_get_host(const ENetAddress * address, char * hostName, size_t nameLength); - - ENET_API enet_uint32 enet_host_get_peers_count(ENetHost *); - ENET_API enet_uint32 enet_host_get_packets_sent(ENetHost *); - ENET_API enet_uint32 enet_host_get_packets_received(ENetHost *); - ENET_API enet_uint32 enet_host_get_bytes_sent(ENetHost *); - ENET_API enet_uint32 enet_host_get_bytes_received(ENetHost *); - ENET_API enet_uint32 enet_host_get_received_data(ENetHost *, enet_uint8** data); - ENET_API enet_uint32 enet_host_get_mtu(ENetHost *); - - ENET_API enet_uint32 enet_peer_get_id(ENetPeer *); - ENET_API enet_uint32 enet_peer_get_ip(ENetPeer *, char * ip, size_t ipLength); - ENET_API enet_uint16 enet_peer_get_port(ENetPeer *); - ENET_API enet_uint32 enet_peer_get_rtt(ENetPeer *); - ENET_API enet_uint64 enet_peer_get_packets_sent(ENetPeer *); - ENET_API enet_uint32 enet_peer_get_packets_lost(ENetPeer *); - ENET_API enet_uint64 enet_peer_get_bytes_sent(ENetPeer *); - ENET_API enet_uint64 enet_peer_get_bytes_received(ENetPeer *); - - ENET_API ENetPeerState enet_peer_get_state(ENetPeer *); - - ENET_API void * enet_peer_get_data(ENetPeer *); - ENET_API void enet_peer_set_data(ENetPeer *, const void *); - - ENET_API void * enet_packet_get_data(ENetPacket *); - ENET_API enet_uint32 enet_packet_get_length(ENetPacket *); - ENET_API void enet_packet_set_free_callback(ENetPacket *, void *); - - ENET_API ENetPacket * enet_packet_create(const void *, size_t, enet_uint32); - ENET_API ENetPacket * enet_packet_create_offset(const void *, size_t, size_t, enet_uint32); - ENET_API void enet_packet_destroy(ENetPacket *); - ENET_API enet_uint32 enet_crc32(const ENetBuffer *, size_t); - - ENET_API ENetHost * enet_host_create(const ENetAddress *, size_t, size_t, enet_uint32, enet_uint32); - ENET_API void enet_host_destroy(ENetHost *); - ENET_API ENetPeer * enet_host_connect(ENetHost *, const ENetAddress *, size_t, enet_uint32); - ENET_API int enet_host_check_events(ENetHost *, ENetEvent *); - ENET_API int enet_host_service(ENetHost *, ENetEvent *, enet_uint32); - ENET_API int enet_host_send_raw(ENetHost *, const ENetAddress *, enet_uint8 *, size_t); - ENET_API int enet_host_send_raw_ex(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t skipBytes, size_t bytesToSend); - ENET_API void enet_host_set_intercept(ENetHost *, const ENetInterceptCallback); - ENET_API void enet_host_flush(ENetHost *); - ENET_API void enet_host_broadcast(ENetHost *, enet_uint8, ENetPacket *); - ENET_API void enet_host_compress(ENetHost *, const ENetCompressor *); - ENET_API void enet_host_channel_limit(ENetHost *, size_t); - ENET_API void enet_host_bandwidth_limit(ENetHost *, enet_uint32, enet_uint32); - extern void enet_host_bandwidth_throttle(ENetHost *); - extern enet_uint64 enet_host_random_seed(void); - - ENET_API int enet_peer_send(ENetPeer *, enet_uint8, ENetPacket *); - ENET_API ENetPacket * enet_peer_receive(ENetPeer *, enet_uint8 * channelID); - ENET_API void enet_peer_ping(ENetPeer *); - ENET_API void enet_peer_ping_interval(ENetPeer *, enet_uint32); - ENET_API void enet_peer_timeout(ENetPeer *, enet_uint32, enet_uint32, enet_uint32); - ENET_API void enet_peer_reset(ENetPeer *); - ENET_API void enet_peer_disconnect(ENetPeer *, enet_uint32); - ENET_API void enet_peer_disconnect_now(ENetPeer *, enet_uint32); - ENET_API void enet_peer_disconnect_later(ENetPeer *, enet_uint32); - ENET_API void enet_peer_throttle_configure(ENetPeer *, enet_uint32, enet_uint32, enet_uint32); - extern int enet_peer_throttle(ENetPeer *, enet_uint32); - extern void enet_peer_reset_queues(ENetPeer *); - extern void enet_peer_setup_outgoing_command(ENetPeer *, ENetOutgoingCommand *); - extern ENetOutgoingCommand * enet_peer_queue_outgoing_command(ENetPeer *, const ENetProtocol *, ENetPacket *, enet_uint32, enet_uint16); - extern ENetIncomingCommand * enet_peer_queue_incoming_command(ENetPeer *, const ENetProtocol *, const void *, size_t, enet_uint32, enet_uint32); - extern ENetAcknowledgement * enet_peer_queue_acknowledgement(ENetPeer *, const ENetProtocol *, enet_uint16); - extern void enet_peer_dispatch_incoming_unreliable_commands(ENetPeer *, ENetChannel *); - extern void enet_peer_dispatch_incoming_reliable_commands(ENetPeer *, ENetChannel *); - extern void enet_peer_on_connect(ENetPeer *); - extern void enet_peer_on_disconnect(ENetPeer *); - - extern size_t enet_protocol_command_size (enet_uint8); - -#ifdef __cplusplus -} -#endif - -#if defined(ENET_IMPLEMENTATION) && !defined(ENET_IMPLEMENTATION_DONE) -#define ENET_IMPLEMENTATION_DONE 1 - -#ifdef __cplusplus -extern "C" { -#endif - -// =======================================================================// -// ! -// ! Atomics -// ! -// =======================================================================// - -#if defined(_MSC_VER) - - #define ENET_AT_CASSERT_PRED(predicate) sizeof(char[2 * !!(predicate)-1]) - #define ENET_IS_SUPPORTED_ATOMIC(size) ENET_AT_CASSERT_PRED(size == 1 || size == 2 || size == 4 || size == 8) - #define ENET_ATOMIC_SIZEOF(variable) (ENET_IS_SUPPORTED_ATOMIC(sizeof(*(variable))), sizeof(*(variable))) - - __inline int64_t enet_at_atomic_read(char *ptr, size_t size) - { - switch (size) { - case 1: - return _InterlockedExchangeAdd8((volatile char *)ptr, 0); - case 2: - return _InterlockedExchangeAdd16((volatile SHORT *)ptr, 0); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd((volatile LONG *)ptr, 0); - #else - return _InterlockedExchangeAdd((volatile LONG *)ptr, 0); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd64((volatile LONGLONG *)ptr, 0); - #else - return _InterlockedExchangeAdd64((volatile LONGLONG *)ptr, 0); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - __inline int64_t enet_at_atomic_write(char *ptr, int64_t value, size_t size) - { - switch (size) { - case 1: - return _InterlockedExchange8((volatile char *)ptr, (char)value); - case 2: - return _InterlockedExchange16((volatile SHORT *)ptr, (SHORT)value); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchange((volatile LONG *)ptr, (LONG)value); - #else - return _InterlockedExchange((volatile LONG *)ptr, (LONG)value); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchange64((volatile LONGLONG *)ptr, (LONGLONG)value); - #else - return _InterlockedExchange64((volatile LONGLONG *)ptr, (LONGLONG)value); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - __inline int64_t enet_at_atomic_cas(char *ptr, int64_t new_val, int64_t old_val, size_t size) - { - switch (size) { - case 1: - return _InterlockedCompareExchange8((volatile char *)ptr, (char)new_val, (char)old_val); - case 2: - return _InterlockedCompareExchange16((volatile SHORT *)ptr, (SHORT)new_val, - (SHORT)old_val); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedCompareExchange((volatile LONG *)ptr, (LONG)new_val, (LONG)old_val); - #else - return _InterlockedCompareExchange((volatile LONG *)ptr, (LONG)new_val, (LONG)old_val); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedCompareExchange64((volatile LONGLONG *)ptr, (LONGLONG)new_val, - (LONGLONG)old_val); - #else - return _InterlockedCompareExchange64((volatile LONGLONG *)ptr, (LONGLONG)new_val, - (LONGLONG)old_val); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - __inline int64_t enet_at_atomic_inc(char *ptr, int64_t delta, size_t data_size) - { - switch (data_size) { - case 1: - return _InterlockedExchangeAdd8((volatile char *)ptr, (char)delta); - case 2: - return _InterlockedExchangeAdd16((volatile SHORT *)ptr, (SHORT)delta); - case 4: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd((volatile LONG *)ptr, (LONG)delta); - #else - return _InterlockedExchangeAdd((volatile LONG *)ptr, (LONG)delta); - #endif - case 8: - #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE - return InterlockedExchangeAdd64((volatile LONGLONG *)ptr, (LONGLONG)delta); - #else - return _InterlockedExchangeAdd64((volatile LONGLONG *)ptr, (LONGLONG)delta); - #endif - default: - return 0xbad13bad; /* never reached */ - } - } - - #define ENET_ATOMIC_READ(variable) enet_at_atomic_read((char *)(variable), ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_WRITE(variable, new_val) \ - enet_at_atomic_write((char *)(variable), (int64_t)(new_val), ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_CAS(variable, old_value, new_val) \ - enet_at_atomic_cas((char *)(variable), (int64_t)(new_val), (int64_t)(old_value), \ - ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_INC(variable) enet_at_atomic_inc((char *)(variable), 1, ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_DEC(variable) enet_at_atomic_inc((char *)(variable), -1, ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_INC_BY(variable, delta) \ - enet_at_atomic_inc((char *)(variable), (delta), ENET_ATOMIC_SIZEOF(variable)) - #define ENET_ATOMIC_DEC_BY(variable, delta) \ - enet_at_atomic_inc((char *)(variable), -(delta), ENET_ATOMIC_SIZEOF(variable)) - -#elif defined(__GNUC__) || defined(__clang__) - - #if defined(__clang__) || (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)) - #define AT_HAVE_ATOMICS - #endif - - /* We want to use __atomic built-ins if possible because the __sync primitives are - deprecated, because the __atomic build-ins allow us to use ENET_ATOMIC_WRITE on - uninitialized memory without running into undefined behavior, and because the - __atomic versions generate more efficient code since we don't need to rely on - CAS when we don't actually want it. - - Note that we use acquire-release memory order (like mutexes do). We could use - sequentially consistent memory order but that has lower performance and is - almost always unneeded. */ - #ifdef AT_HAVE_ATOMICS - #define ENET_ATOMIC_READ(ptr) __atomic_load_n((ptr), __ATOMIC_ACQUIRE) - #define ENET_ATOMIC_WRITE(ptr, value) __atomic_store_n((ptr), (value), __ATOMIC_RELEASE) - - #ifndef typeof - #define typeof __typeof__ - #endif - - /* clang_analyzer doesn't know that CAS writes to memory so it complains about - potentially lost data. Replace the code with the equivalent non-sync code. */ - #ifdef __clang_analyzer__ - - #define ENET_ATOMIC_CAS(ptr, old_value, new_value) \ - ({ \ - typeof(*(ptr)) ENET_ATOMIC_CAS_old_actual_ = (*(ptr)); \ - if (ATOMIC_CAS_old_actual_ == (old_value)) { \ - *(ptr) = new_value; \ - } \ - ENET_ATOMIC_CAS_old_actual_; \ - }) - - #else - - /* Could use __auto_type instead of typeof but that shouldn't work in C++. - The ({ }) syntax is a GCC extension called statement expression. It lets - us return a value out of the macro. - - TODO We should return bool here instead of the old value to avoid the ABA - problem. */ - #define ENET_ATOMIC_CAS(ptr, old_value, new_value) \ - ({ \ - typeof(*(ptr)) ENET_ATOMIC_CAS_expected_ = (old_value); \ - __atomic_compare_exchange_n((ptr), &ENET_ATOMIC_CAS_expected_, (new_value), false, \ - __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE); \ - ENET_ATOMIC_CAS_expected_; \ - }) - - #endif /* __clang_analyzer__ */ - - #define ENET_ATOMIC_INC(ptr) __atomic_fetch_add((ptr), 1, __ATOMIC_ACQ_REL) - #define ENET_ATOMIC_DEC(ptr) __atomic_fetch_sub((ptr), 1, __ATOMIC_ACQ_REL) - #define ENET_ATOMIC_INC_BY(ptr, delta) __atomic_fetch_add((ptr), (delta), __ATOMIC_ACQ_REL) - #define ENET_ATOMIC_DEC_BY(ptr, delta) __atomic_fetch_sub((ptr), (delta), __ATOMIC_ACQ_REL) - - #else - - #define ENET_ATOMIC_READ(variable) __sync_fetch_and_add(variable, 0) - #define ENET_ATOMIC_WRITE(variable, new_val) \ - (void) __sync_val_compare_and_swap((variable), *(variable), (new_val)) - #define ENET_ATOMIC_CAS(variable, old_value, new_val) \ - __sync_val_compare_and_swap((variable), (old_value), (new_val)) - #define ENET_ATOMIC_INC(variable) __sync_fetch_and_add((variable), 1) - #define ENET_ATOMIC_DEC(variable) __sync_fetch_and_sub((variable), 1) - #define ENET_ATOMIC_INC_BY(variable, delta) __sync_fetch_and_add((variable), (delta), 1) - #define ENET_ATOMIC_DEC_BY(variable, delta) __sync_fetch_and_sub((variable), (delta), 1) - - #endif /* AT_HAVE_ATOMICS */ - - #undef AT_HAVE_ATOMICS - -#endif /* defined(_MSC_VER) */ - - -// =======================================================================// -// ! -// ! Callbacks -// ! -// =======================================================================// - - static ENetCallbacks callbacks = { malloc, free, abort }; - - int enet_initialize_with_callbacks(ENetVersion version, const ENetCallbacks *inits) { - if (version < ENET_VERSION_CREATE(1, 3, 0)) { - return -1; - } - - if (inits->e_malloc != NULL || inits->e_free != NULL) { - if (inits->e_malloc == NULL || inits->e_free == NULL) { - return -1; - } - - callbacks.e_malloc = inits->e_malloc; - callbacks.e_free = inits->e_free; - } - - if (inits->no_memory != NULL) { - callbacks.no_memory = inits->no_memory; - } - - return enet_initialize(); - } - - ENetVersion enet_linked_version(void) { - return ENET_VERSION; - } - - void * enet_malloc(size_t size) { - void *memory = callbacks.e_malloc(size); - - if (memory == NULL) { - callbacks.no_memory(); - } - - return memory; - } - - void enet_free(void *memory) { - callbacks.e_free(memory); - } - -// =======================================================================// -// ! -// ! List -// ! -// =======================================================================// - - void enet_list_clear(ENetList *list) { - list->sentinel.next = &list->sentinel; - list->sentinel.previous = &list->sentinel; - } - - ENetListIterator enet_list_insert(ENetListIterator position, void *data) { - ENetListIterator result = (ENetListIterator)data; - - result->previous = position->previous; - result->next = position; - - result->previous->next = result; - position->previous = result; - - return result; - } - - void *enet_list_remove(ENetListIterator position) { - position->previous->next = position->next; - position->next->previous = position->previous; - - return position; - } - - ENetListIterator enet_list_move(ENetListIterator position, void *dataFirst, void *dataLast) { - ENetListIterator first = (ENetListIterator)dataFirst; - ENetListIterator last = (ENetListIterator)dataLast; - - first->previous->next = last->next; - last->next->previous = first->previous; - - first->previous = position->previous; - last->next = position; - - first->previous->next = first; - position->previous = last; - - return first; - } - - size_t enet_list_size(ENetList *list) { - size_t size = 0; - ENetListIterator position; - - for (position = enet_list_begin(list); position != enet_list_end(list); position = enet_list_next(position)) { - ++size; - } - - return size; - } - -// =======================================================================// -// ! -// ! Packet -// ! -// =======================================================================// - - /** - * Creates a packet that may be sent to a peer. - * @param data initial contents of the packet's data; the packet's data will remain uninitialized if data is NULL. - * @param dataLength size of the data allocated for this packet - * @param flags flags for this packet as described for the ENetPacket structure. - * @returns the packet on success, NULL on failure - */ - ENetPacket *enet_packet_create(const void *data, size_t dataLength, enet_uint32 flags) { - ENetPacket *packet; - if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket)); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)data; - } - else { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)packet + sizeof(ENetPacket); - - if (data != NULL) { - memcpy(packet->data, data, dataLength); - } - } - - packet->referenceCount = 0; - packet->flags = flags; - packet->dataLength = dataLength; - packet->freeCallback = NULL; - packet->userData = NULL; - - return packet; - } - - ENetPacket *enet_packet_create_offset(const void *data, size_t dataLength, size_t dataOffset, enet_uint32 flags) { - ENetPacket *packet; - if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket)); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)data; - } - else { - packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength + dataOffset); - if (packet == NULL) { - return NULL; - } - - packet->data = (enet_uint8 *)packet + sizeof(ENetPacket); - - if (data != NULL) { - memcpy(packet->data + dataOffset, data, dataLength); - } - } - - packet->referenceCount = 0; - packet->flags = flags; - packet->dataLength = dataLength + dataOffset; - packet->freeCallback = NULL; - packet->userData = NULL; - - return packet; - } - - /** - * Destroys the packet and deallocates its data. - * @param packet packet to be destroyed - */ - void enet_packet_destroy(ENetPacket *packet) { - if (packet == NULL) { - return; - } - - if (packet->freeCallback != NULL) { - (*packet->freeCallback)((void *)packet); - } - - enet_free(packet); - } - - static int initializedCRC32 = 0; - static enet_uint32 crcTable[256]; - - static enet_uint32 reflect_crc(int val, int bits) { - int result = 0, bit; - - for (bit = 0; bit < bits; bit++) { - if (val & 1) { result |= 1 << (bits - 1 - bit); } - val >>= 1; - } - - return result; - } - - static void initialize_crc32(void) { - int byte; - - for (byte = 0; byte < 256; ++byte) { - enet_uint32 crc = reflect_crc(byte, 8) << 24; - int offset; - - for (offset = 0; offset < 8; ++offset) { - if (crc & 0x80000000) { - crc = (crc << 1) ^ 0x04c11db7; - } else { - crc <<= 1; - } - } - - crcTable[byte] = reflect_crc(crc, 32); - } - - initializedCRC32 = 1; - } - - enet_uint32 enet_crc32(const ENetBuffer *buffers, size_t bufferCount) { - enet_uint32 crc = 0xFFFFFFFF; - - if (!initializedCRC32) { initialize_crc32(); } - - while (bufferCount-- > 0) { - const enet_uint8 *data = (const enet_uint8 *)buffers->data; - const enet_uint8 *dataEnd = &data[buffers->dataLength]; - - while (data < dataEnd) { - crc = (crc >> 8) ^ crcTable[(crc & 0xFF) ^ *data++]; - } - - ++buffers; - } - - return ENET_HOST_TO_NET_32(~crc); - } - -// =======================================================================// -// ! -// ! Protocol -// ! -// =======================================================================// - - static size_t commandSizes[ENET_PROTOCOL_COMMAND_COUNT] = { - 0, - sizeof(ENetProtocolAcknowledge), - sizeof(ENetProtocolConnect), - sizeof(ENetProtocolVerifyConnect), - sizeof(ENetProtocolDisconnect), - sizeof(ENetProtocolPing), - sizeof(ENetProtocolSendReliable), - sizeof(ENetProtocolSendUnreliable), - sizeof(ENetProtocolSendFragment), - sizeof(ENetProtocolSendUnsequenced), - sizeof(ENetProtocolBandwidthLimit), - sizeof(ENetProtocolThrottleConfigure), - sizeof(ENetProtocolSendFragment) - }; - - size_t enet_protocol_command_size(enet_uint8 commandNumber) { - return commandSizes[commandNumber & ENET_PROTOCOL_COMMAND_MASK]; - } - - static void enet_protocol_change_state(ENetHost *host, ENetPeer *peer, ENetPeerState state) { - if (state == ENET_PEER_STATE_CONNECTED || state == ENET_PEER_STATE_DISCONNECT_LATER) { - enet_peer_on_connect(peer); - } else { - enet_peer_on_disconnect(peer); - } - - peer->state = state; - } - - static void enet_protocol_dispatch_state(ENetHost *host, ENetPeer *peer, ENetPeerState state) { - enet_protocol_change_state(host, peer, state); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - } - - static int enet_protocol_dispatch_incoming_commands(ENetHost *host, ENetEvent *event) { - while (!enet_list_empty(&host->dispatchQueue)) { - ENetPeer *peer = (ENetPeer *) enet_list_remove(enet_list_begin(&host->dispatchQueue)); - peer->needsDispatch = 0; - - switch (peer->state) { - case ENET_PEER_STATE_CONNECTION_PENDING: - case ENET_PEER_STATE_CONNECTION_SUCCEEDED: - enet_protocol_change_state(host, peer, ENET_PEER_STATE_CONNECTED); - - event->type = ENET_EVENT_TYPE_CONNECT; - event->peer = peer; - event->data = peer->eventData; - - return 1; - - case ENET_PEER_STATE_ZOMBIE: - host->recalculateBandwidthLimits = 1; - - event->type = ENET_EVENT_TYPE_DISCONNECT; - event->peer = peer; - event->data = peer->eventData; - - enet_peer_reset(peer); - - return 1; - - case ENET_PEER_STATE_CONNECTED: - if (enet_list_empty(&peer->dispatchedCommands)) { - continue; - } - - event->packet = enet_peer_receive(peer, &event->channelID); - if (event->packet == NULL) { - continue; - } - - event->type = ENET_EVENT_TYPE_RECEIVE; - event->peer = peer; - - if (!enet_list_empty(&peer->dispatchedCommands)) { - peer->needsDispatch = 1; - enet_list_insert(enet_list_end(&host->dispatchQueue), &peer->dispatchList); - } - - return 1; - - default: - break; - } - } - - return 0; - } /* enet_protocol_dispatch_incoming_commands */ - - static void enet_protocol_notify_connect(ENetHost *host, ENetPeer *peer, ENetEvent *event) { - host->recalculateBandwidthLimits = 1; - - if (event != NULL) { - enet_protocol_change_state(host, peer, ENET_PEER_STATE_CONNECTED); - - peer->totalDataSent = 0; - peer->totalDataReceived = 0; - peer->totalPacketsSent = 0; - peer->totalPacketsLost = 0; - - event->type = ENET_EVENT_TYPE_CONNECT; - event->peer = peer; - event->data = peer->eventData; - } else { - enet_protocol_dispatch_state(host, peer, peer->state == ENET_PEER_STATE_CONNECTING ? ENET_PEER_STATE_CONNECTION_SUCCEEDED : ENET_PEER_STATE_CONNECTION_PENDING); - } - } - - static void enet_protocol_notify_disconnect(ENetHost *host, ENetPeer *peer, ENetEvent *event) { - if (peer->state >= ENET_PEER_STATE_CONNECTION_PENDING) { - host->recalculateBandwidthLimits = 1; - } - - if (peer->state != ENET_PEER_STATE_CONNECTING && peer->state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) { - enet_peer_reset(peer); - } else if (event != NULL) { - event->type = ENET_EVENT_TYPE_DISCONNECT; - event->peer = peer; - event->data = 0; - - enet_peer_reset(peer); - } else { - peer->eventData = 0; - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - } - - static void enet_protocol_notify_disconnect_timeout (ENetHost * host, ENetPeer * peer, ENetEvent * event) { - if (peer->state >= ENET_PEER_STATE_CONNECTION_PENDING) { - host->recalculateBandwidthLimits = 1; - } - - if (peer->state != ENET_PEER_STATE_CONNECTING && peer->state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) { - enet_peer_reset (peer); - } - else if (event != NULL) { - event->type = ENET_EVENT_TYPE_DISCONNECT_TIMEOUT; - event->peer = peer; - event->data = 0; - - enet_peer_reset(peer); - } - else { - peer->eventData = 0; - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - } - - static void enet_protocol_remove_sent_unreliable_commands(ENetPeer *peer) { - ENetOutgoingCommand *outgoingCommand; - - while (!enet_list_empty(&peer->sentUnreliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) enet_list_front(&peer->sentUnreliableCommands); - enet_list_remove(&outgoingCommand->outgoingCommandList); - - if (outgoingCommand->packet != NULL) { - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - outgoingCommand->packet->flags |= ENET_PACKET_FLAG_SENT; - enet_packet_destroy(outgoingCommand->packet); - } - } - - enet_free(outgoingCommand); - } - } - - static ENetProtocolCommand enet_protocol_remove_sent_reliable_command(ENetPeer *peer, enet_uint16 reliableSequenceNumber, enet_uint8 channelID) { - ENetOutgoingCommand *outgoingCommand = NULL; - ENetListIterator currentCommand; - ENetProtocolCommand commandNumber; - int wasSent = 1; - - for (currentCommand = enet_list_begin(&peer->sentReliableCommands); - currentCommand != enet_list_end(&peer->sentReliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (outgoingCommand->reliableSequenceNumber == reliableSequenceNumber && outgoingCommand->command.header.channelID == channelID) { - break; - } - } - - if (currentCommand == enet_list_end(&peer->sentReliableCommands)) { - for (currentCommand = enet_list_begin(&peer->outgoingReliableCommands); - currentCommand != enet_list_end(&peer->outgoingReliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (outgoingCommand->sendAttempts < 1) { return ENET_PROTOCOL_COMMAND_NONE; } - if (outgoingCommand->reliableSequenceNumber == reliableSequenceNumber && outgoingCommand->command.header.channelID == channelID) { - break; - } - } - - if (currentCommand == enet_list_end(&peer->outgoingReliableCommands)) { - return ENET_PROTOCOL_COMMAND_NONE; - } - - wasSent = 0; - } - - if (outgoingCommand == NULL) { - return ENET_PROTOCOL_COMMAND_NONE; - } - - if (channelID < peer->channelCount) { - ENetChannel *channel = &peer->channels[channelID]; - enet_uint16 reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (channel->reliableWindows[reliableWindow] > 0) { - --channel->reliableWindows[reliableWindow]; - if (!channel->reliableWindows[reliableWindow]) { - channel->usedReliableWindows &= ~(1 << reliableWindow); - } - } - } - - commandNumber = (ENetProtocolCommand) (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK); - enet_list_remove(&outgoingCommand->outgoingCommandList); - - if (outgoingCommand->packet != NULL) { - if (wasSent) { - peer->reliableDataInTransit -= outgoingCommand->fragmentLength; - } - - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - outgoingCommand->packet->flags |= ENET_PACKET_FLAG_SENT; - enet_packet_destroy(outgoingCommand->packet); - } - } - - enet_free(outgoingCommand); - - if (enet_list_empty(&peer->sentReliableCommands)) { - return commandNumber; - } - - outgoingCommand = (ENetOutgoingCommand *) enet_list_front(&peer->sentReliableCommands); - peer->nextTimeout = outgoingCommand->sentTime + outgoingCommand->roundTripTimeout; - - return commandNumber; - } /* enet_protocol_remove_sent_reliable_command */ - - static ENetPeer * enet_protocol_handle_connect(ENetHost *host, ENetProtocolHeader *header, ENetProtocol *command) { - enet_uint8 incomingSessionID, outgoingSessionID; - enet_uint32 mtu, windowSize; - ENetChannel *channel; - size_t channelCount, duplicatePeers = 0; - ENetPeer *currentPeer, *peer = NULL; - ENetProtocol verifyCommand; - - channelCount = ENET_NET_TO_HOST_32(command->connect.channelCount); - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - return NULL; - } - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED) { - if (peer == NULL) { - peer = currentPeer; - } - } else if (currentPeer->state != ENET_PEER_STATE_CONNECTING && in6_equal(currentPeer->address.host, host->receivedAddress.host)) { - if (currentPeer->address.port == host->receivedAddress.port && currentPeer->connectID == command->connect.connectID) { - return NULL; - } - - ++duplicatePeers; - } - } - - if (peer == NULL || duplicatePeers >= host->duplicatePeers) { - return NULL; - } - - if (channelCount > host->channelLimit) { - channelCount = host->channelLimit; - } - peer->channels = (ENetChannel *) enet_malloc(channelCount * sizeof(ENetChannel)); - if (peer->channels == NULL) { - return NULL; - } - peer->channelCount = channelCount; - peer->state = ENET_PEER_STATE_ACKNOWLEDGING_CONNECT; - peer->connectID = command->connect.connectID; - peer->address = host->receivedAddress; - peer->outgoingPeerID = ENET_NET_TO_HOST_16(command->connect.outgoingPeerID); - peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->connect.incomingBandwidth); - peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->connect.outgoingBandwidth); - peer->packetThrottleInterval = ENET_NET_TO_HOST_32(command->connect.packetThrottleInterval); - peer->packetThrottleAcceleration = ENET_NET_TO_HOST_32(command->connect.packetThrottleAcceleration); - peer->packetThrottleDeceleration = ENET_NET_TO_HOST_32(command->connect.packetThrottleDeceleration); - peer->eventData = ENET_NET_TO_HOST_32(command->connect.data); - - incomingSessionID = command->connect.incomingSessionID == 0xFF ? peer->outgoingSessionID : command->connect.incomingSessionID; - incomingSessionID = (incomingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - if (incomingSessionID == peer->outgoingSessionID) { - incomingSessionID = (incomingSessionID + 1) - & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - } - peer->outgoingSessionID = incomingSessionID; - - outgoingSessionID = command->connect.outgoingSessionID == 0xFF ? peer->incomingSessionID : command->connect.outgoingSessionID; - outgoingSessionID = (outgoingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - if (outgoingSessionID == peer->incomingSessionID) { - outgoingSessionID = (outgoingSessionID + 1) - & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - } - peer->incomingSessionID = outgoingSessionID; - - for (channel = peer->channels; channel < &peer->channels[channelCount]; ++channel) { - channel->outgoingReliableSequenceNumber = 0; - channel->outgoingUnreliableSequenceNumber = 0; - channel->incomingReliableSequenceNumber = 0; - channel->incomingUnreliableSequenceNumber = 0; - - enet_list_clear(&channel->incomingReliableCommands); - enet_list_clear(&channel->incomingUnreliableCommands); - - channel->usedReliableWindows = 0; - memset(channel->reliableWindows, 0, sizeof(channel->reliableWindows)); - } - - mtu = ENET_NET_TO_HOST_32(command->connect.mtu); - - if (mtu < ENET_PROTOCOL_MINIMUM_MTU) { - mtu = ENET_PROTOCOL_MINIMUM_MTU; - } else if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) { - mtu = ENET_PROTOCOL_MAXIMUM_MTU; - } - - peer->mtu = mtu; - - if (host->outgoingBandwidth == 0 && peer->incomingBandwidth == 0) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else if (host->outgoingBandwidth == 0 || peer->incomingBandwidth == 0) { - peer->windowSize = (ENET_MAX(host->outgoingBandwidth, peer->incomingBandwidth) / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else { - peer->windowSize = (ENET_MIN(host->outgoingBandwidth, peer->incomingBandwidth) / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (peer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (peer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - if (host->incomingBandwidth == 0) { - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else { - windowSize = (host->incomingBandwidth / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (windowSize > ENET_NET_TO_HOST_32(command->connect.windowSize)) { - windowSize = ENET_NET_TO_HOST_32(command->connect.windowSize); - } - - if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - verifyCommand.header.command = ENET_PROTOCOL_COMMAND_VERIFY_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - verifyCommand.header.channelID = 0xFF; - verifyCommand.verifyConnect.outgoingPeerID = ENET_HOST_TO_NET_16(peer->incomingPeerID); - verifyCommand.verifyConnect.incomingSessionID = incomingSessionID; - verifyCommand.verifyConnect.outgoingSessionID = outgoingSessionID; - verifyCommand.verifyConnect.mtu = ENET_HOST_TO_NET_32(peer->mtu); - verifyCommand.verifyConnect.windowSize = ENET_HOST_TO_NET_32(windowSize); - verifyCommand.verifyConnect.channelCount = ENET_HOST_TO_NET_32(channelCount); - verifyCommand.verifyConnect.incomingBandwidth = ENET_HOST_TO_NET_32(host->incomingBandwidth); - verifyCommand.verifyConnect.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth); - verifyCommand.verifyConnect.packetThrottleInterval = ENET_HOST_TO_NET_32(peer->packetThrottleInterval); - verifyCommand.verifyConnect.packetThrottleAcceleration = ENET_HOST_TO_NET_32(peer->packetThrottleAcceleration); - verifyCommand.verifyConnect.packetThrottleDeceleration = ENET_HOST_TO_NET_32(peer->packetThrottleDeceleration); - verifyCommand.verifyConnect.connectID = peer->connectID; - - enet_peer_queue_outgoing_command(peer, &verifyCommand, NULL, 0, 0); - return peer; - } /* enet_protocol_handle_connect */ - - static int enet_protocol_handle_send_reliable(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - size_t dataLength; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - dataLength = ENET_NET_TO_HOST_16(command->sendReliable.dataLength); - *currentData += dataLength; - - if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendReliable), dataLength, ENET_PACKET_FLAG_RELIABLE, 0) == NULL) { - return -1; - } - - return 0; - } - - static int enet_protocol_handle_send_unsequenced(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - enet_uint32 unsequencedGroup, index; - size_t dataLength; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - dataLength = ENET_NET_TO_HOST_16(command->sendUnsequenced.dataLength); - *currentData += dataLength; - if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - unsequencedGroup = ENET_NET_TO_HOST_16(command->sendUnsequenced.unsequencedGroup); - index = unsequencedGroup % ENET_PEER_UNSEQUENCED_WINDOW_SIZE; - - if (unsequencedGroup < peer->incomingUnsequencedGroup) { - unsequencedGroup += 0x10000; - } - - if (unsequencedGroup >= (enet_uint32) peer->incomingUnsequencedGroup + ENET_PEER_FREE_UNSEQUENCED_WINDOWS * ENET_PEER_UNSEQUENCED_WINDOW_SIZE) { - return 0; - } - - unsequencedGroup &= 0xFFFF; - - if (unsequencedGroup - index != peer->incomingUnsequencedGroup) { - peer->incomingUnsequencedGroup = unsequencedGroup - index; - memset(peer->unsequencedWindow, 0, sizeof(peer->unsequencedWindow)); - } else if (peer->unsequencedWindow[index / 32] & (1 << (index % 32))) { - return 0; - } - - if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendUnsequenced), dataLength, ENET_PACKET_FLAG_UNSEQUENCED,0) == NULL) { - return -1; - } - - peer->unsequencedWindow[index / 32] |= 1 << (index % 32); - - return 0; - } /* enet_protocol_handle_send_unsequenced */ - - static int enet_protocol_handle_send_unreliable(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, - enet_uint8 **currentData) { - size_t dataLength; - - if (command->header.channelID >= peer->channelCount || - (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) - { - return -1; - } - - dataLength = ENET_NET_TO_HOST_16(command->sendUnreliable.dataLength); - *currentData += dataLength; - if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendUnreliable), dataLength, 0, 0) == NULL) { - return -1; - } - - return 0; - } - - static int enet_protocol_handle_send_fragment(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - enet_uint32 fragmentNumber, fragmentCount, fragmentOffset, fragmentLength, startSequenceNumber, totalLength; - ENetChannel *channel; - enet_uint16 startWindow, currentWindow; - ENetListIterator currentCommand; - ENetIncomingCommand *startCommand = NULL; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - fragmentLength = ENET_NET_TO_HOST_16(command->sendFragment.dataLength); - *currentData += fragmentLength; - if (fragmentLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - channel = &peer->channels[command->header.channelID]; - startSequenceNumber = ENET_NET_TO_HOST_16(command->sendFragment.startSequenceNumber); - startWindow = startSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (startSequenceNumber < channel->incomingReliableSequenceNumber) { - startWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (startWindow < currentWindow || startWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - return 0; - } - - fragmentNumber = ENET_NET_TO_HOST_32(command->sendFragment.fragmentNumber); - fragmentCount = ENET_NET_TO_HOST_32(command->sendFragment.fragmentCount); - fragmentOffset = ENET_NET_TO_HOST_32(command->sendFragment.fragmentOffset); - totalLength = ENET_NET_TO_HOST_32(command->sendFragment.totalLength); - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT || - fragmentNumber >= fragmentCount || - totalLength > host->maximumPacketSize || - fragmentOffset >= totalLength || - fragmentLength > totalLength - fragmentOffset - ) { - return -1; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingReliableCommands)); - currentCommand != enet_list_end(&channel->incomingReliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (startSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber <= startSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < startSequenceNumber) { - break; - } - - if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) != - ENET_PROTOCOL_COMMAND_SEND_FRAGMENT || - totalLength != incomingCommand->packet->dataLength || - fragmentCount != incomingCommand->fragmentCount - ) { - return -1; - } - - startCommand = incomingCommand; - break; - } - } - - if (startCommand == NULL) { - ENetProtocol hostCommand = *command; - hostCommand.header.reliableSequenceNumber = startSequenceNumber; - startCommand = enet_peer_queue_incoming_command(peer, &hostCommand, NULL, totalLength, ENET_PACKET_FLAG_RELIABLE, fragmentCount); - if (startCommand == NULL) { - return -1; - } - } - - if ((startCommand->fragments[fragmentNumber / 32] & (1 << (fragmentNumber % 32))) == 0) { - --startCommand->fragmentsRemaining; - startCommand->fragments[fragmentNumber / 32] |= (1 << (fragmentNumber % 32)); - - if (fragmentOffset + fragmentLength > startCommand->packet->dataLength) { - fragmentLength = startCommand->packet->dataLength - fragmentOffset; - } - - memcpy(startCommand->packet->data + fragmentOffset, (enet_uint8 *) command + sizeof(ENetProtocolSendFragment), fragmentLength); - - if (startCommand->fragmentsRemaining <= 0) { - enet_peer_dispatch_incoming_reliable_commands(peer, channel); - } - } - - return 0; - } /* enet_protocol_handle_send_fragment */ - - static int enet_protocol_handle_send_unreliable_fragment(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) { - enet_uint32 fragmentNumber, fragmentCount, fragmentOffset, fragmentLength, reliableSequenceNumber, startSequenceNumber, totalLength; - enet_uint16 reliableWindow, currentWindow; - ENetChannel *channel; - ENetListIterator currentCommand; - ENetIncomingCommand *startCommand = NULL; - - if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) { - return -1; - } - - fragmentLength = ENET_NET_TO_HOST_16(command->sendFragment.dataLength); - *currentData += fragmentLength; - if (fragmentLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) { - return -1; - } - - channel = &peer->channels[command->header.channelID]; - reliableSequenceNumber = command->header.reliableSequenceNumber; - startSequenceNumber = ENET_NET_TO_HOST_16(command->sendFragment.startSequenceNumber); - - reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - return 0; - } - - if (reliableSequenceNumber == channel->incomingReliableSequenceNumber && startSequenceNumber <= channel->incomingUnreliableSequenceNumber) { - return 0; - } - - fragmentNumber = ENET_NET_TO_HOST_32(command->sendFragment.fragmentNumber); - fragmentCount = ENET_NET_TO_HOST_32(command->sendFragment.fragmentCount); - fragmentOffset = ENET_NET_TO_HOST_32(command->sendFragment.fragmentOffset); - totalLength = ENET_NET_TO_HOST_32(command->sendFragment.totalLength); - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT || - fragmentNumber >= fragmentCount || - totalLength > host->maximumPacketSize || - fragmentOffset >= totalLength || - fragmentLength > totalLength - fragmentOffset - ) { - return -1; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingUnreliableCommands)); - currentCommand != enet_list_end(&channel->incomingUnreliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber > reliableSequenceNumber) { - continue; - } - - if (incomingCommand->unreliableSequenceNumber <= startSequenceNumber) { - if (incomingCommand->unreliableSequenceNumber < startSequenceNumber) { - break; - } - - if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) != - ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT || - totalLength != incomingCommand->packet->dataLength || - fragmentCount != incomingCommand->fragmentCount - ) { - return -1; - } - - startCommand = incomingCommand; - break; - } - } - - if (startCommand == NULL) { - startCommand = enet_peer_queue_incoming_command(peer, command, NULL, totalLength, - ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT, fragmentCount); - if (startCommand == NULL) { - return -1; - } - } - - if ((startCommand->fragments[fragmentNumber / 32] & (1 << (fragmentNumber % 32))) == 0) { - --startCommand->fragmentsRemaining; - startCommand->fragments[fragmentNumber / 32] |= (1 << (fragmentNumber % 32)); - - if (fragmentOffset + fragmentLength > startCommand->packet->dataLength) { - fragmentLength = startCommand->packet->dataLength - fragmentOffset; - } - - memcpy(startCommand->packet->data + fragmentOffset, (enet_uint8 *) command + sizeof(ENetProtocolSendFragment), fragmentLength); - - if (startCommand->fragmentsRemaining <= 0) { - enet_peer_dispatch_incoming_unreliable_commands(peer, channel); - } - } - - return 0; - } /* enet_protocol_handle_send_unreliable_fragment */ - - static int enet_protocol_handle_ping(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - return -1; - } - - return 0; - } - - static int enet_protocol_handle_bandwidth_limit(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - return -1; - } - - if (peer->incomingBandwidth != 0) { - --host->bandwidthLimitedPeers; - } - - peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->bandwidthLimit.incomingBandwidth); - peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->bandwidthLimit.outgoingBandwidth); - - if (peer->incomingBandwidth != 0) { - ++host->bandwidthLimitedPeers; - } - - if (peer->incomingBandwidth == 0 && host->outgoingBandwidth == 0) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else if (peer->incomingBandwidth == 0 || host->outgoingBandwidth == 0) { - peer->windowSize = (ENET_MAX(peer->incomingBandwidth, host->outgoingBandwidth) - / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else { - peer->windowSize = (ENET_MIN(peer->incomingBandwidth, host->outgoingBandwidth) - / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (peer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (peer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - return 0; - } /* enet_protocol_handle_bandwidth_limit */ - - static int enet_protocol_handle_throttle_configure(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - return -1; - } - - peer->packetThrottleInterval = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleInterval); - peer->packetThrottleAcceleration = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleAcceleration); - peer->packetThrottleDeceleration = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleDeceleration); - - return 0; - } - - static int enet_protocol_handle_disconnect(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) { - if (peer->state == ENET_PEER_STATE_DISCONNECTED || peer->state == ENET_PEER_STATE_ZOMBIE || - peer->state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT - ) { - return 0; - } - - enet_peer_reset_queues(peer); - - if (peer->state == ENET_PEER_STATE_CONNECTION_SUCCEEDED || peer->state == ENET_PEER_STATE_DISCONNECTING || peer->state == ENET_PEER_STATE_CONNECTING) { - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - else if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - if (peer->state == ENET_PEER_STATE_CONNECTION_PENDING) { host->recalculateBandwidthLimits = 1; } - enet_peer_reset(peer); - } - else if (command->header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) { - enet_protocol_change_state(host, peer, ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT); - } - else { - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - - if (peer->state != ENET_PEER_STATE_DISCONNECTED) { - peer->eventData = ENET_NET_TO_HOST_32(command->disconnect.data); - } - - return 0; - } - - static int enet_protocol_handle_acknowledge(ENetHost *host, ENetEvent *event, ENetPeer *peer, const ENetProtocol *command) { - enet_uint32 roundTripTime, receivedSentTime, receivedReliableSequenceNumber; - ENetProtocolCommand commandNumber; - - if (peer->state == ENET_PEER_STATE_DISCONNECTED || peer->state == ENET_PEER_STATE_ZOMBIE) { - return 0; - } - - receivedSentTime = ENET_NET_TO_HOST_16(command->acknowledge.receivedSentTime); - receivedSentTime |= host->serviceTime & 0xFFFF0000; - if ((receivedSentTime & 0x8000) > (host->serviceTime & 0x8000)) { - receivedSentTime -= 0x10000; - } - - if (ENET_TIME_LESS(host->serviceTime, receivedSentTime)) { - return 0; - } - - peer->lastReceiveTime = host->serviceTime; - peer->earliestTimeout = 0; - roundTripTime = ENET_TIME_DIFFERENCE(host->serviceTime, receivedSentTime); - - enet_peer_throttle(peer, roundTripTime); - peer->roundTripTimeVariance -= peer->roundTripTimeVariance / 4; - - if (roundTripTime >= peer->roundTripTime) { - peer->roundTripTime += (roundTripTime - peer->roundTripTime) / 8; - peer->roundTripTimeVariance += (roundTripTime - peer->roundTripTime) / 4; - } else { - peer->roundTripTime -= (peer->roundTripTime - roundTripTime) / 8; - peer->roundTripTimeVariance += (peer->roundTripTime - roundTripTime) / 4; - } - - if (peer->roundTripTime < peer->lowestRoundTripTime) { - peer->lowestRoundTripTime = peer->roundTripTime; - } - - if (peer->roundTripTimeVariance > peer->highestRoundTripTimeVariance) { - peer->highestRoundTripTimeVariance = peer->roundTripTimeVariance; - } - - if (peer->packetThrottleEpoch == 0 || - ENET_TIME_DIFFERENCE(host->serviceTime, peer->packetThrottleEpoch) >= peer->packetThrottleInterval - ) { - peer->lastRoundTripTime = peer->lowestRoundTripTime; - peer->lastRoundTripTimeVariance = peer->highestRoundTripTimeVariance; - peer->lowestRoundTripTime = peer->roundTripTime; - peer->highestRoundTripTimeVariance = peer->roundTripTimeVariance; - peer->packetThrottleEpoch = host->serviceTime; - } - - receivedReliableSequenceNumber = ENET_NET_TO_HOST_16(command->acknowledge.receivedReliableSequenceNumber); - commandNumber = enet_protocol_remove_sent_reliable_command(peer, receivedReliableSequenceNumber, command->header.channelID); - - switch (peer->state) { - case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT: - if (commandNumber != ENET_PROTOCOL_COMMAND_VERIFY_CONNECT) { - return -1; - } - - enet_protocol_notify_connect(host, peer, event); - break; - - case ENET_PEER_STATE_DISCONNECTING: - if (commandNumber != ENET_PROTOCOL_COMMAND_DISCONNECT) { - return -1; - } - - enet_protocol_notify_disconnect(host, peer, event); - break; - - case ENET_PEER_STATE_DISCONNECT_LATER: - if (enet_list_empty(&peer->outgoingReliableCommands) && - enet_list_empty(&peer->outgoingUnreliableCommands) && - enet_list_empty(&peer->sentReliableCommands)) - { - enet_peer_disconnect(peer, peer->eventData); - } - break; - - default: - break; - } - - return 0; - } /* enet_protocol_handle_acknowledge */ - - static int enet_protocol_handle_verify_connect(ENetHost *host, ENetEvent *event, ENetPeer *peer, const ENetProtocol *command) { - enet_uint32 mtu, windowSize; - size_t channelCount; - - if (peer->state != ENET_PEER_STATE_CONNECTING) { - return 0; - } - - channelCount = ENET_NET_TO_HOST_32(command->verifyConnect.channelCount); - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT || - ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleInterval) != peer->packetThrottleInterval || - ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleAcceleration) != peer->packetThrottleAcceleration || - ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleDeceleration) != peer->packetThrottleDeceleration || - command->verifyConnect.connectID != peer->connectID - ) { - peer->eventData = 0; - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - return -1; - } - - enet_protocol_remove_sent_reliable_command(peer, 1, 0xFF); - - if (channelCount < peer->channelCount) { - peer->channelCount = channelCount; - } - - peer->outgoingPeerID = ENET_NET_TO_HOST_16(command->verifyConnect.outgoingPeerID); - peer->incomingSessionID = command->verifyConnect.incomingSessionID; - peer->outgoingSessionID = command->verifyConnect.outgoingSessionID; - - mtu = ENET_NET_TO_HOST_32(command->verifyConnect.mtu); - - if (mtu < ENET_PROTOCOL_MINIMUM_MTU) { - mtu = ENET_PROTOCOL_MINIMUM_MTU; - } else if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) { - mtu = ENET_PROTOCOL_MAXIMUM_MTU; - } - - if (mtu < peer->mtu) { - peer->mtu = mtu; - } - - windowSize = ENET_NET_TO_HOST_32(command->verifyConnect.windowSize); - if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - if (windowSize < peer->windowSize) { - peer->windowSize = windowSize; - } - - peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->verifyConnect.incomingBandwidth); - peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->verifyConnect.outgoingBandwidth); - - enet_protocol_notify_connect(host, peer, event); - return 0; - } /* enet_protocol_handle_verify_connect */ - - static int enet_protocol_handle_incoming_commands(ENetHost *host, ENetEvent *event) { - ENetProtocolHeader *header; - ENetProtocol *command; - ENetPeer *peer; - enet_uint8 *currentData; - size_t headerSize; - enet_uint16 peerID, flags; - enet_uint8 sessionID; - - if (host->receivedDataLength < (size_t) &((ENetProtocolHeader *) 0)->sentTime) { - return 0; - } - - header = (ENetProtocolHeader *) host->receivedData; - - peerID = ENET_NET_TO_HOST_16(header->peerID); - sessionID = (peerID & ENET_PROTOCOL_HEADER_SESSION_MASK) >> ENET_PROTOCOL_HEADER_SESSION_SHIFT; - flags = peerID & ENET_PROTOCOL_HEADER_FLAG_MASK; - peerID &= ~(ENET_PROTOCOL_HEADER_FLAG_MASK | ENET_PROTOCOL_HEADER_SESSION_MASK); - - headerSize = (flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME ? sizeof(ENetProtocolHeader) : (size_t) &((ENetProtocolHeader *) 0)->sentTime); - if (host->checksum != NULL) { - headerSize += sizeof(enet_uint32); - } - - if (peerID == ENET_PROTOCOL_MAXIMUM_PEER_ID) { - peer = NULL; - } else if (peerID >= host->peerCount) { - return 0; - } else { - peer = &host->peers[peerID]; - - if (peer->state == ENET_PEER_STATE_DISCONNECTED || - peer->state == ENET_PEER_STATE_ZOMBIE || - ((!in6_equal(host->receivedAddress.host , peer->address.host) || - host->receivedAddress.port != peer->address.port) && - 1 /* no broadcast in ipv6 !in6_equal(peer->address.host , ENET_HOST_BROADCAST)*/) || - (peer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID && - sessionID != peer->incomingSessionID) - ) { - return 0; - } - } - - if (flags & ENET_PROTOCOL_HEADER_FLAG_COMPRESSED) { - size_t originalSize; - if (host->compressor.context == NULL || host->compressor.decompress == NULL) { - return 0; - } - - originalSize = host->compressor.decompress(host->compressor.context, - host->receivedData + headerSize, - host->receivedDataLength - headerSize, - host->packetData[1] + headerSize, - sizeof(host->packetData[1]) - headerSize - ); - - if (originalSize <= 0 || originalSize > sizeof(host->packetData[1]) - headerSize) { - return 0; - } - - memcpy(host->packetData[1], header, headerSize); - host->receivedData = host->packetData[1]; - host->receivedDataLength = headerSize + originalSize; - } - - if (host->checksum != NULL) { - enet_uint32 *checksum = (enet_uint32 *) &host->receivedData[headerSize - sizeof(enet_uint32)]; - enet_uint32 desiredChecksum = *checksum; - ENetBuffer buffer; - - *checksum = peer != NULL ? peer->connectID : 0; - - buffer.data = host->receivedData; - buffer.dataLength = host->receivedDataLength; - - if (host->checksum(&buffer, 1) != desiredChecksum) { - return 0; - } - } - - if (peer != NULL) { - peer->address.host = host->receivedAddress.host; - peer->address.port = host->receivedAddress.port; - peer->incomingDataTotal += host->receivedDataLength; - peer->totalDataReceived += host->receivedDataLength; - } - - currentData = host->receivedData + headerSize; - - while (currentData < &host->receivedData[host->receivedDataLength]) { - enet_uint8 commandNumber; - size_t commandSize; - - command = (ENetProtocol *) currentData; - - if (currentData + sizeof(ENetProtocolCommandHeader) > &host->receivedData[host->receivedDataLength]) { - break; - } - - commandNumber = command->header.command & ENET_PROTOCOL_COMMAND_MASK; - if (commandNumber >= ENET_PROTOCOL_COMMAND_COUNT) { - break; - } - - commandSize = commandSizes[commandNumber]; - if (commandSize == 0 || currentData + commandSize > &host->receivedData[host->receivedDataLength]) { - break; - } - - currentData += commandSize; - - if (peer == NULL && (commandNumber != ENET_PROTOCOL_COMMAND_CONNECT || currentData < &host->receivedData[host->receivedDataLength])) { - break; - } - - command->header.reliableSequenceNumber = ENET_NET_TO_HOST_16(command->header.reliableSequenceNumber); - - switch (commandNumber) { - case ENET_PROTOCOL_COMMAND_ACKNOWLEDGE: - if (enet_protocol_handle_acknowledge(host, event, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_CONNECT: - if (peer != NULL) { - goto commandError; - } - peer = enet_protocol_handle_connect(host, header, command); - if (peer == NULL) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_VERIFY_CONNECT: - if (enet_protocol_handle_verify_connect(host, event, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_DISCONNECT: - if (enet_protocol_handle_disconnect(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_PING: - if (enet_protocol_handle_ping(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - if (enet_protocol_handle_send_reliable(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - if (enet_protocol_handle_send_unreliable(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - if (enet_protocol_handle_send_unsequenced(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - if (enet_protocol_handle_send_fragment(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT: - if (enet_protocol_handle_bandwidth_limit(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE: - if (enet_protocol_handle_throttle_configure(host, peer, command)) { - goto commandError; - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT: - if (enet_protocol_handle_send_unreliable_fragment(host, peer, command, ¤tData)) { - goto commandError; - } - break; - - default: - goto commandError; - } - - if (peer != NULL && (command->header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) != 0) { - enet_uint16 sentTime; - - if (!(flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME)) { - break; - } - - sentTime = ENET_NET_TO_HOST_16(header->sentTime); - - switch (peer->state) { - case ENET_PEER_STATE_DISCONNECTING: - case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT: - case ENET_PEER_STATE_DISCONNECTED: - case ENET_PEER_STATE_ZOMBIE: - break; - - case ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT: - if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) { - enet_peer_queue_acknowledgement(peer, command, sentTime); - } - break; - - default: - enet_peer_queue_acknowledgement(peer, command, sentTime); - break; - } - } - } - - commandError: - if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) { - return 1; - } - - return 0; - } /* enet_protocol_handle_incoming_commands */ - - static int enet_protocol_receive_incoming_commands(ENetHost *host, ENetEvent *event) { - int packets; - - for (packets = 0; packets < 256; ++packets) { - int receivedLength; - ENetBuffer buffer; - - buffer.data = host->packetData[0]; - // buffer.dataLength = sizeof (host->packetData[0]); - buffer.dataLength = host->mtu; - - receivedLength = enet_socket_receive(host->socket, &host->receivedAddress, &buffer, 1); - - if (receivedLength == -2) - continue; - - if (receivedLength < 0) { - return -1; - } - - if (receivedLength == 0) { - return 0; - } - - host->receivedData = host->packetData[0]; - host->receivedDataLength = receivedLength; - - host->totalReceivedData += receivedLength; - host->totalReceivedPackets++; - - if (host->intercept != NULL) { - switch (host->intercept(host, (void *)event)) { - case 1: - if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) { - return 1; - } - - continue; - - case -1: - return -1; - - default: - break; - } - } - - switch (enet_protocol_handle_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - return -1; - - default: - break; - } - } - - return -1; - } /* enet_protocol_receive_incoming_commands */ - - static void enet_protocol_send_acknowledgements(ENetHost *host, ENetPeer *peer) { - ENetProtocol *command = &host->commands[host->commandCount]; - ENetBuffer *buffer = &host->buffers[host->bufferCount]; - ENetAcknowledgement *acknowledgement; - ENetListIterator currentAcknowledgement; - enet_uint16 reliableSequenceNumber; - - currentAcknowledgement = enet_list_begin(&peer->acknowledgements); - - while (currentAcknowledgement != enet_list_end(&peer->acknowledgements)) { - if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] || - buffer >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] || - peer->mtu - host->packetSize < sizeof(ENetProtocolAcknowledge) - ) { - host->continueSending = 1; - break; - } - - acknowledgement = (ENetAcknowledgement *) currentAcknowledgement; - currentAcknowledgement = enet_list_next(currentAcknowledgement); - - buffer->data = command; - buffer->dataLength = sizeof(ENetProtocolAcknowledge); - host->packetSize += buffer->dataLength; - - reliableSequenceNumber = ENET_HOST_TO_NET_16(acknowledgement->command.header.reliableSequenceNumber); - - command->header.command = ENET_PROTOCOL_COMMAND_ACKNOWLEDGE; - command->header.channelID = acknowledgement->command.header.channelID; - command->header.reliableSequenceNumber = reliableSequenceNumber; - command->acknowledge.receivedReliableSequenceNumber = reliableSequenceNumber; - command->acknowledge.receivedSentTime = ENET_HOST_TO_NET_16(acknowledgement->sentTime); - - if ((acknowledgement->command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) { - enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE); - } - - enet_list_remove(&acknowledgement->acknowledgementList); - enet_free(acknowledgement); - - ++command; - ++buffer; - } - - host->commandCount = command - host->commands; - host->bufferCount = buffer - host->buffers; - } /* enet_protocol_send_acknowledgements */ - - static void enet_protocol_send_unreliable_outgoing_commands(ENetHost *host, ENetPeer *peer) { - ENetProtocol *command = &host->commands[host->commandCount]; - ENetBuffer *buffer = &host->buffers[host->bufferCount]; - ENetOutgoingCommand *outgoingCommand; - ENetListIterator currentCommand; - - currentCommand = enet_list_begin(&peer->outgoingUnreliableCommands); - while (currentCommand != enet_list_end(&peer->outgoingUnreliableCommands)) { - size_t commandSize; - - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - commandSize = commandSizes[outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK]; - - if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] || - buffer + 1 >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] || - peer->mtu - host->packetSize < commandSize || - (outgoingCommand->packet != NULL && - peer->mtu - host->packetSize < commandSize + outgoingCommand->fragmentLength) - ) { - host->continueSending = 1; - break; - } - - currentCommand = enet_list_next(currentCommand); - - if (outgoingCommand->packet != NULL && outgoingCommand->fragmentOffset == 0) { - peer->packetThrottleCounter += ENET_PEER_PACKET_THROTTLE_COUNTER; - peer->packetThrottleCounter %= ENET_PEER_PACKET_THROTTLE_SCALE; - - if (peer->packetThrottleCounter > peer->packetThrottle) { - enet_uint16 reliableSequenceNumber = outgoingCommand->reliableSequenceNumber; - enet_uint16 unreliableSequenceNumber = outgoingCommand->unreliableSequenceNumber; - for (;;) { - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - enet_packet_destroy(outgoingCommand->packet); - } - - enet_list_remove(&outgoingCommand->outgoingCommandList); - enet_free(outgoingCommand); - - if (currentCommand == enet_list_end(&peer->outgoingUnreliableCommands)) { - break; - } - - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - if (outgoingCommand->reliableSequenceNumber != reliableSequenceNumber || outgoingCommand->unreliableSequenceNumber != unreliableSequenceNumber) { - break; - } - - currentCommand = enet_list_next(currentCommand); - } - - continue; - } - } - - buffer->data = command; - buffer->dataLength = commandSize; - host->packetSize += buffer->dataLength; - *command = outgoingCommand->command; - enet_list_remove(&outgoingCommand->outgoingCommandList); - - if (outgoingCommand->packet != NULL) { - ++buffer; - - buffer->data = outgoingCommand->packet->data + outgoingCommand->fragmentOffset; - buffer->dataLength = outgoingCommand->fragmentLength; - - host->packetSize += buffer->dataLength; - - enet_list_insert(enet_list_end(&peer->sentUnreliableCommands), outgoingCommand); - } else { - enet_free(outgoingCommand); - } - - ++command; - ++buffer; - } - - host->commandCount = command - host->commands; - host->bufferCount = buffer - host->buffers; - - if (peer->state == ENET_PEER_STATE_DISCONNECT_LATER && - enet_list_empty(&peer->outgoingReliableCommands) && - enet_list_empty(&peer->outgoingUnreliableCommands) && - enet_list_empty(&peer->sentReliableCommands)) - { - enet_peer_disconnect(peer, peer->eventData); - } - } /* enet_protocol_send_unreliable_outgoing_commands */ - - static int enet_protocol_check_timeouts(ENetHost *host, ENetPeer *peer, ENetEvent *event) { - ENetOutgoingCommand *outgoingCommand; - ENetListIterator currentCommand, insertPosition; - - currentCommand = enet_list_begin(&peer->sentReliableCommands); - insertPosition = enet_list_begin(&peer->outgoingReliableCommands); - - while (currentCommand != enet_list_end(&peer->sentReliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - currentCommand = enet_list_next(currentCommand); - - if (ENET_TIME_DIFFERENCE(host->serviceTime, outgoingCommand->sentTime) < outgoingCommand->roundTripTimeout) { - continue; - } - - if (peer->earliestTimeout == 0 || ENET_TIME_LESS(outgoingCommand->sentTime, peer->earliestTimeout)) { - peer->earliestTimeout = outgoingCommand->sentTime; - } - - if (peer->earliestTimeout != 0 && - (ENET_TIME_DIFFERENCE(host->serviceTime, peer->earliestTimeout) >= peer->timeoutMaximum || - (outgoingCommand->roundTripTimeout >= outgoingCommand->roundTripTimeoutLimit && - ENET_TIME_DIFFERENCE(host->serviceTime, peer->earliestTimeout) >= peer->timeoutMinimum)) - ) { - enet_protocol_notify_disconnect_timeout(host, peer, event); - return 1; - } - - if (outgoingCommand->packet != NULL) { - peer->reliableDataInTransit -= outgoingCommand->fragmentLength; - } - - ++peer->packetsLost; - ++peer->totalPacketsLost; - - /* Replaced exponential backoff time with something more linear */ - /* Source: http://lists.cubik.org/pipermail/enet-discuss/2014-May/002308.html */ - outgoingCommand->roundTripTimeout = peer->roundTripTime + 4 * peer->roundTripTimeVariance; - outgoingCommand->roundTripTimeoutLimit = peer->timeoutLimit * outgoingCommand->roundTripTimeout; - - enet_list_insert(insertPosition, enet_list_remove(&outgoingCommand->outgoingCommandList)); - - if (currentCommand == enet_list_begin(&peer->sentReliableCommands) && !enet_list_empty(&peer->sentReliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - peer->nextTimeout = outgoingCommand->sentTime + outgoingCommand->roundTripTimeout; - } - } - - return 0; - } /* enet_protocol_check_timeouts */ - - static int enet_protocol_send_reliable_outgoing_commands(ENetHost *host, ENetPeer *peer) { - ENetProtocol *command = &host->commands[host->commandCount]; - ENetBuffer *buffer = &host->buffers[host->bufferCount]; - ENetOutgoingCommand *outgoingCommand; - ENetListIterator currentCommand; - ENetChannel *channel; - enet_uint16 reliableWindow; - size_t commandSize; - int windowExceeded = 0, windowWrap = 0, canPing = 1; - - currentCommand = enet_list_begin(&peer->outgoingReliableCommands); - - while (currentCommand != enet_list_end(&peer->outgoingReliableCommands)) { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - channel = outgoingCommand->command.header.channelID < peer->channelCount ? &peer->channels[outgoingCommand->command.header.channelID] : NULL; - reliableWindow = outgoingCommand->reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (channel != NULL) { - if (!windowWrap && - outgoingCommand->sendAttempts < 1 && - !(outgoingCommand->reliableSequenceNumber % ENET_PEER_RELIABLE_WINDOW_SIZE) && - (channel->reliableWindows[(reliableWindow + ENET_PEER_RELIABLE_WINDOWS - 1) - % ENET_PEER_RELIABLE_WINDOWS] >= ENET_PEER_RELIABLE_WINDOW_SIZE || - channel->usedReliableWindows & ((((1 << ENET_PEER_FREE_RELIABLE_WINDOWS) - 1) << reliableWindow) - | (((1 << ENET_PEER_FREE_RELIABLE_WINDOWS) - 1) >> (ENET_PEER_RELIABLE_WINDOWS - reliableWindow)))) - ) { - windowWrap = 1; - } - - if (windowWrap) { - currentCommand = enet_list_next(currentCommand); - continue; - } - } - - if (outgoingCommand->packet != NULL) { - if (!windowExceeded) { - enet_uint32 windowSize = (peer->packetThrottle * peer->windowSize) / ENET_PEER_PACKET_THROTTLE_SCALE; - - if (peer->reliableDataInTransit + outgoingCommand->fragmentLength > ENET_MAX(windowSize, peer->mtu)) { - windowExceeded = 1; - } - } - if (windowExceeded) { - currentCommand = enet_list_next(currentCommand); - - continue; - } - } - - canPing = 0; - - commandSize = commandSizes[outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK]; - if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] || - buffer + 1 >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] || - peer->mtu - host->packetSize < commandSize || - (outgoingCommand->packet != NULL && - (enet_uint16) (peer->mtu - host->packetSize) < (enet_uint16) (commandSize + outgoingCommand->fragmentLength)) - ) { - host->continueSending = 1; - break; - } - - currentCommand = enet_list_next(currentCommand); - - if (channel != NULL && outgoingCommand->sendAttempts < 1) { - channel->usedReliableWindows |= 1 << reliableWindow; - ++channel->reliableWindows[reliableWindow]; - } - - ++outgoingCommand->sendAttempts; - - if (outgoingCommand->roundTripTimeout == 0) { - outgoingCommand->roundTripTimeout = peer->roundTripTime + 4 * peer->roundTripTimeVariance; - outgoingCommand->roundTripTimeoutLimit = peer->timeoutLimit * outgoingCommand->roundTripTimeout; - } - - if (enet_list_empty(&peer->sentReliableCommands)) { - peer->nextTimeout = host->serviceTime + outgoingCommand->roundTripTimeout; - } - - enet_list_insert(enet_list_end(&peer->sentReliableCommands), enet_list_remove(&outgoingCommand->outgoingCommandList)); - - outgoingCommand->sentTime = host->serviceTime; - - buffer->data = command; - buffer->dataLength = commandSize; - - host->packetSize += buffer->dataLength; - host->headerFlags |= ENET_PROTOCOL_HEADER_FLAG_SENT_TIME; - - *command = outgoingCommand->command; - - if (outgoingCommand->packet != NULL) { - ++buffer; - buffer->data = outgoingCommand->packet->data + outgoingCommand->fragmentOffset; - buffer->dataLength = outgoingCommand->fragmentLength; - host->packetSize += outgoingCommand->fragmentLength; - peer->reliableDataInTransit += outgoingCommand->fragmentLength; - } - - ++peer->packetsSent; - ++peer->totalPacketsSent; - - ++command; - ++buffer; - } - - host->commandCount = command - host->commands; - host->bufferCount = buffer - host->buffers; - - return canPing; - } /* enet_protocol_send_reliable_outgoing_commands */ - - static int enet_protocol_send_outgoing_commands(ENetHost *host, ENetEvent *event, int checkForTimeouts) { - enet_uint8 headerData[sizeof(ENetProtocolHeader) + sizeof(enet_uint32)]; - ENetProtocolHeader *header = (ENetProtocolHeader *) headerData; - ENetPeer *currentPeer; - int sentLength; - size_t shouldCompress = 0; - host->continueSending = 1; - - while (host->continueSending) - for (host->continueSending = 0, currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED || currentPeer->state == ENET_PEER_STATE_ZOMBIE) { - continue; - } - - host->headerFlags = 0; - host->commandCount = 0; - host->bufferCount = 1; - host->packetSize = sizeof(ENetProtocolHeader); - - if (!enet_list_empty(¤tPeer->acknowledgements)) { - enet_protocol_send_acknowledgements(host, currentPeer); - } - - if (checkForTimeouts != 0 && - !enet_list_empty(¤tPeer->sentReliableCommands) && - ENET_TIME_GREATER_EQUAL(host->serviceTime, currentPeer->nextTimeout) && - enet_protocol_check_timeouts(host, currentPeer, event) == 1 - ) { - if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) { - return 1; - } else { - continue; - } - } - - if ((enet_list_empty(¤tPeer->outgoingReliableCommands) || - enet_protocol_send_reliable_outgoing_commands(host, currentPeer)) && - enet_list_empty(¤tPeer->sentReliableCommands) && - ENET_TIME_DIFFERENCE(host->serviceTime, currentPeer->lastReceiveTime) >= currentPeer->pingInterval && - currentPeer->mtu - host->packetSize >= sizeof(ENetProtocolPing) - ) { - enet_peer_ping(currentPeer); - enet_protocol_send_reliable_outgoing_commands(host, currentPeer); - } - - if (!enet_list_empty(¤tPeer->outgoingUnreliableCommands)) { - enet_protocol_send_unreliable_outgoing_commands(host, currentPeer); - } - - if (host->commandCount == 0) { - continue; - } - - if (currentPeer->packetLossEpoch == 0) { - currentPeer->packetLossEpoch = host->serviceTime; - } else if (ENET_TIME_DIFFERENCE(host->serviceTime, currentPeer->packetLossEpoch) >= ENET_PEER_PACKET_LOSS_INTERVAL && currentPeer->packetsSent > 0) { - enet_uint32 packetLoss = currentPeer->packetsLost * ENET_PEER_PACKET_LOSS_SCALE / currentPeer->packetsSent; - - #ifdef ENET_DEBUG - printf( - "peer %u: %f%%+-%f%% packet loss, %u+-%u ms round trip time, %f%% throttle, %u/%u outgoing, %u/%u incoming\n", currentPeer->incomingPeerID, - currentPeer->packetLoss / (float) ENET_PEER_PACKET_LOSS_SCALE, - currentPeer->packetLossVariance / (float) ENET_PEER_PACKET_LOSS_SCALE, currentPeer->roundTripTime, currentPeer->roundTripTimeVariance, - currentPeer->packetThrottle / (float) ENET_PEER_PACKET_THROTTLE_SCALE, - enet_list_size(¤tPeer->outgoingReliableCommands), - enet_list_size(¤tPeer->outgoingUnreliableCommands), - currentPeer->channels != NULL ? enet_list_size( ¤tPeer->channels->incomingReliableCommands) : 0, - currentPeer->channels != NULL ? enet_list_size(¤tPeer->channels->incomingUnreliableCommands) : 0 - ); - #endif - - currentPeer->packetLossVariance -= currentPeer->packetLossVariance / 4; - - if (packetLoss >= currentPeer->packetLoss) { - currentPeer->packetLoss += (packetLoss - currentPeer->packetLoss) / 8; - currentPeer->packetLossVariance += (packetLoss - currentPeer->packetLoss) / 4; - } else { - currentPeer->packetLoss -= (currentPeer->packetLoss - packetLoss) / 8; - currentPeer->packetLossVariance += (currentPeer->packetLoss - packetLoss) / 4; - } - - currentPeer->packetLossEpoch = host->serviceTime; - currentPeer->packetsSent = 0; - currentPeer->packetsLost = 0; - } - - host->buffers->data = headerData; - if (host->headerFlags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME) { - header->sentTime = ENET_HOST_TO_NET_16(host->serviceTime & 0xFFFF); - host->buffers->dataLength = sizeof(ENetProtocolHeader); - } else { - host->buffers->dataLength = (size_t) &((ENetProtocolHeader *) 0)->sentTime; - } - - shouldCompress = 0; - if (host->compressor.context != NULL && host->compressor.compress != NULL) { - size_t originalSize = host->packetSize - sizeof(ENetProtocolHeader), - compressedSize = host->compressor.compress(host->compressor.context, &host->buffers[1], host->bufferCount - 1, originalSize, host->packetData[1], originalSize); - if (compressedSize > 0 && compressedSize < originalSize) { - host->headerFlags |= ENET_PROTOCOL_HEADER_FLAG_COMPRESSED; - shouldCompress = compressedSize; - #ifdef ENET_DEBUG_COMPRESS - printf("peer %u: compressed %u->%u (%u%%)\n", currentPeer->incomingPeerID, originalSize, compressedSize, (compressedSize * 100) / originalSize); - #endif - } - } - - if (currentPeer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID) { - host->headerFlags |= currentPeer->outgoingSessionID << ENET_PROTOCOL_HEADER_SESSION_SHIFT; - } - header->peerID = ENET_HOST_TO_NET_16(currentPeer->outgoingPeerID | host->headerFlags); - if (host->checksum != NULL) { - enet_uint32 *checksum = (enet_uint32 *) &headerData[host->buffers->dataLength]; - *checksum = currentPeer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID ? currentPeer->connectID : 0; - host->buffers->dataLength += sizeof(enet_uint32); - *checksum = host->checksum(host->buffers, host->bufferCount); - } - - if (shouldCompress > 0) { - host->buffers[1].data = host->packetData[1]; - host->buffers[1].dataLength = shouldCompress; - host->bufferCount = 2; - } - - currentPeer->lastSendTime = host->serviceTime; - sentLength = enet_socket_send(host->socket, ¤tPeer->address, host->buffers, host->bufferCount); - enet_protocol_remove_sent_unreliable_commands(currentPeer); - - if (sentLength < 0) { - return -1; - } - - host->totalSentData += sentLength; - currentPeer->totalDataSent += sentLength; - host->totalSentPackets++; - } - - return 0; - } /* enet_protocol_send_outgoing_commands */ - - /** Sends any queued packets on the host specified to its designated peers. - * - * @param host host to flush - * @remarks this function need only be used in circumstances where one wishes to send queued packets earlier than in a call to enet_host_service(). - * @ingroup host - */ - void enet_host_flush(ENetHost *host) { - host->serviceTime = enet_time_get(); - enet_protocol_send_outgoing_commands(host, NULL, 0); - } - - /** Checks for any queued events on the host and dispatches one if available. - * - * @param host host to check for events - * @param event an event structure where event details will be placed if available - * @retval > 0 if an event was dispatched - * @retval 0 if no events are available - * @retval < 0 on failure - * @ingroup host - */ - int enet_host_check_events(ENetHost *host, ENetEvent *event) { - if (event == NULL) { return -1; } - - event->type = ENET_EVENT_TYPE_NONE; - event->peer = NULL; - event->packet = NULL; - - return enet_protocol_dispatch_incoming_commands(host, event); - } - - /** Waits for events on the host specified and shuttles packets between - * the host and its peers. - * - * @param host host to service - * @param event an event structure where event details will be placed if one occurs - * if event == NULL then no events will be delivered - * @param timeout number of milliseconds that ENet should wait for events - * @retval > 0 if an event occurred within the specified time limit - * @retval 0 if no event occurred - * @retval < 0 on failure - * @remarks enet_host_service should be called fairly regularly for adequate performance - * @ingroup host - */ - int enet_host_service(ENetHost *host, ENetEvent *event, enet_uint32 timeout) { - enet_uint32 waitCondition; - - if (event != NULL) { - event->type = ENET_EVENT_TYPE_NONE; - event->peer = NULL; - event->packet = NULL; - - switch (enet_protocol_dispatch_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error dispatching incoming packets"); - #endif - - return -1; - - default: - break; - } - } - - host->serviceTime = enet_time_get(); - timeout += host->serviceTime; - - do { - if (ENET_TIME_DIFFERENCE(host->serviceTime, host->bandwidthThrottleEpoch) >= ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL) { - enet_host_bandwidth_throttle(host); - } - - switch (enet_protocol_send_outgoing_commands(host, event, 1)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error sending outgoing packets"); - #endif - - return -1; - - default: - break; - } - - switch (enet_protocol_receive_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error receiving incoming packets"); - #endif - - return -1; - - default: - break; - } - - switch (enet_protocol_send_outgoing_commands(host, event, 1)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error sending outgoing packets"); - #endif - - return -1; - - default: - break; - } - - if (event != NULL) { - switch (enet_protocol_dispatch_incoming_commands(host, event)) { - case 1: - return 1; - - case -1: - #ifdef ENET_DEBUG - perror("Error dispatching incoming packets"); - #endif - - return -1; - - default: - break; - } - } - - if (ENET_TIME_GREATER_EQUAL(host->serviceTime, timeout)) { - return 0; - } - - do { - host->serviceTime = enet_time_get(); - - if (ENET_TIME_GREATER_EQUAL(host->serviceTime, timeout)) { - return 0; - } - - waitCondition = ENET_SOCKET_WAIT_RECEIVE | ENET_SOCKET_WAIT_INTERRUPT; - if (enet_socket_wait(host->socket, &waitCondition, ENET_TIME_DIFFERENCE(timeout, host->serviceTime)) != 0) { - return -1; - } - } while (waitCondition & ENET_SOCKET_WAIT_INTERRUPT); - - host->serviceTime = enet_time_get(); - } while (waitCondition & ENET_SOCKET_WAIT_RECEIVE); - - return 0; - } /* enet_host_service */ - - -// =======================================================================// -// ! -// ! Peer -// ! -// =======================================================================// - - /** Configures throttle parameter for a peer. - * - * Unreliable packets are dropped by ENet in response to the varying conditions - * of the Internet connection to the peer. The throttle represents a probability - * that an unreliable packet should not be dropped and thus sent by ENet to the peer. - * The lowest mean round trip time from the sending of a reliable packet to the - * receipt of its acknowledgement is measured over an amount of time specified by - * the interval parameter in milliseconds. If a measured round trip time happens to - * be significantly less than the mean round trip time measured over the interval, - * then the throttle probability is increased to allow more traffic by an amount - * specified in the acceleration parameter, which is a ratio to the ENET_PEER_PACKET_THROTTLE_SCALE - * constant. If a measured round trip time happens to be significantly greater than - * the mean round trip time measured over the interval, then the throttle probability - * is decreased to limit traffic by an amount specified in the deceleration parameter, which - * is a ratio to the ENET_PEER_PACKET_THROTTLE_SCALE constant. When the throttle has - * a value of ENET_PEER_PACKET_THROTTLE_SCALE, no unreliable packets are dropped by - * ENet, and so 100% of all unreliable packets will be sent. When the throttle has a - * value of 0, all unreliable packets are dropped by ENet, and so 0% of all unreliable - * packets will be sent. Intermediate values for the throttle represent intermediate - * probabilities between 0% and 100% of unreliable packets being sent. The bandwidth - * limits of the local and foreign hosts are taken into account to determine a - * sensible limit for the throttle probability above which it should not raise even in - * the best of conditions. - * - * @param peer peer to configure - * @param interval interval, in milliseconds, over which to measure lowest mean RTT; the default value is ENET_PEER_PACKET_THROTTLE_INTERVAL. - * @param acceleration rate at which to increase the throttle probability as mean RTT declines - * @param deceleration rate at which to decrease the throttle probability as mean RTT increases - */ - void enet_peer_throttle_configure(ENetPeer *peer, enet_uint32 interval, enet_uint32 acceleration, enet_uint32 deceleration) { - ENetProtocol command; - - peer->packetThrottleInterval = interval; - peer->packetThrottleAcceleration = acceleration; - peer->packetThrottleDeceleration = deceleration; - - command.header.command = ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - - command.throttleConfigure.packetThrottleInterval = ENET_HOST_TO_NET_32(interval); - command.throttleConfigure.packetThrottleAcceleration = ENET_HOST_TO_NET_32(acceleration); - command.throttleConfigure.packetThrottleDeceleration = ENET_HOST_TO_NET_32(deceleration); - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - } - - int enet_peer_throttle(ENetPeer *peer, enet_uint32 rtt) { - if (peer->lastRoundTripTime <= peer->lastRoundTripTimeVariance) { - peer->packetThrottle = peer->packetThrottleLimit; - } - else if (rtt < peer->lastRoundTripTime) { - peer->packetThrottle += peer->packetThrottleAcceleration; - - if (peer->packetThrottle > peer->packetThrottleLimit) { - peer->packetThrottle = peer->packetThrottleLimit; - } - - return 1; - } - else if (rtt > peer->lastRoundTripTime + 2 * peer->lastRoundTripTimeVariance) { - if (peer->packetThrottle > peer->packetThrottleDeceleration) { - peer->packetThrottle -= peer->packetThrottleDeceleration; - } else { - peer->packetThrottle = 0; - } - - return -1; - } - - return 0; - } - - /* Extended functionality for easier binding in other programming languages */ - enet_uint32 enet_host_get_peers_count(ENetHost *host) { - return host->connectedPeers; - } - - enet_uint32 enet_host_get_packets_sent(ENetHost *host) { - return host->totalSentPackets; - } - - enet_uint32 enet_host_get_packets_received(ENetHost *host) { - return host->totalReceivedPackets; - } - - enet_uint32 enet_host_get_bytes_sent(ENetHost *host) { - return host->totalSentData; - } - - enet_uint32 enet_host_get_bytes_received(ENetHost *host) { - return host->totalReceivedData; - } - - /** Gets received data buffer. Returns buffer length. - * @param host host to access recevie buffer - * @param data ouput parameter for recevied data - * @retval buffer length - */ - enet_uint32 enet_host_get_received_data(ENetHost *host, /*out*/ enet_uint8** data) { - *data = host->receivedData; - return host->receivedDataLength; - } - - enet_uint32 enet_host_get_mtu(ENetHost *host) { - return host->mtu; - } - - enet_uint32 enet_peer_get_id(ENetPeer *peer) { - return peer->connectID; - } - - enet_uint32 enet_peer_get_ip(ENetPeer *peer, char *ip, size_t ipLength) { - return enet_address_get_host_ip(&peer->address, ip, ipLength); - } - - enet_uint16 enet_peer_get_port(ENetPeer *peer) { - return peer->address.port; - } - - ENetPeerState enet_peer_get_state(ENetPeer *peer) { - return peer->state; - } - - enet_uint32 enet_peer_get_rtt(ENetPeer *peer) { - return peer->roundTripTime; - } - - enet_uint64 enet_peer_get_packets_sent(ENetPeer *peer) { - return peer->totalPacketsSent; - } - - enet_uint32 enet_peer_get_packets_lost(ENetPeer *peer) { - return peer->totalPacketsLost; - } - - enet_uint64 enet_peer_get_bytes_sent(ENetPeer *peer) { - return peer->totalDataSent; - } - - enet_uint64 enet_peer_get_bytes_received(ENetPeer *peer) { - return peer->totalDataReceived; - } - - void * enet_peer_get_data(ENetPeer *peer) { - return (void *) peer->data; - } - - void enet_peer_set_data(ENetPeer *peer, const void *data) { - peer->data = (enet_uint32 *) data; - } - - void * enet_packet_get_data(ENetPacket *packet) { - return (void *) packet->data; - } - - enet_uint32 enet_packet_get_length(ENetPacket *packet) { - return packet->dataLength; - } - - void enet_packet_set_free_callback(ENetPacket *packet, void *callback) { - packet->freeCallback = (ENetPacketFreeCallback)callback; - } - - /** Queues a packet to be sent. - * @param peer destination for the packet - * @param channelID channel on which to send - * @param packet packet to send - * @retval 0 on success - * @retval < 0 on failure - */ - int enet_peer_send(ENetPeer *peer, enet_uint8 channelID, ENetPacket *packet) { - ENetChannel *channel = &peer->channels[channelID]; - ENetProtocol command; - size_t fragmentLength; - - if (peer->state != ENET_PEER_STATE_CONNECTED || channelID >= peer->channelCount || packet->dataLength > peer->host->maximumPacketSize) { - return -1; - } - - fragmentLength = peer->mtu - sizeof(ENetProtocolHeader) - sizeof(ENetProtocolSendFragment); - if (peer->host->checksum != NULL) { - fragmentLength -= sizeof(enet_uint32); - } - - if (packet->dataLength > fragmentLength) { - enet_uint32 fragmentCount = (packet->dataLength + fragmentLength - 1) / fragmentLength, fragmentNumber, fragmentOffset; - enet_uint8 commandNumber; - enet_uint16 startSequenceNumber; - ENetList fragments; - ENetOutgoingCommand *fragment; - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT) { - return -1; - } - - if ((packet->flags & (ENET_PACKET_FLAG_RELIABLE | ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT)) == - ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT && - channel->outgoingUnreliableSequenceNumber < 0xFFFF) - { - commandNumber = ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT; - startSequenceNumber = ENET_HOST_TO_NET_16(channel->outgoingUnreliableSequenceNumber + 1); - } else { - commandNumber = ENET_PROTOCOL_COMMAND_SEND_FRAGMENT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - startSequenceNumber = ENET_HOST_TO_NET_16(channel->outgoingReliableSequenceNumber + 1); - } - - enet_list_clear(&fragments); - - for (fragmentNumber = 0, fragmentOffset = 0; fragmentOffset < packet->dataLength; ++fragmentNumber, fragmentOffset += fragmentLength) { - if (packet->dataLength - fragmentOffset < fragmentLength) { - fragmentLength = packet->dataLength - fragmentOffset; - } - - fragment = (ENetOutgoingCommand *) enet_malloc(sizeof(ENetOutgoingCommand)); - - if (fragment == NULL) { - while (!enet_list_empty(&fragments)) { - fragment = (ENetOutgoingCommand *) enet_list_remove(enet_list_begin(&fragments)); - - enet_free(fragment); - } - - return -1; - } - - fragment->fragmentOffset = fragmentOffset; - fragment->fragmentLength = fragmentLength; - fragment->packet = packet; - fragment->command.header.command = commandNumber; - fragment->command.header.channelID = channelID; - - fragment->command.sendFragment.startSequenceNumber = startSequenceNumber; - - fragment->command.sendFragment.dataLength = ENET_HOST_TO_NET_16(fragmentLength); - fragment->command.sendFragment.fragmentCount = ENET_HOST_TO_NET_32(fragmentCount); - fragment->command.sendFragment.fragmentNumber = ENET_HOST_TO_NET_32(fragmentNumber); - fragment->command.sendFragment.totalLength = ENET_HOST_TO_NET_32(packet->dataLength); - fragment->command.sendFragment.fragmentOffset = ENET_NET_TO_HOST_32(fragmentOffset); - - enet_list_insert(enet_list_end(&fragments), fragment); - } - - packet->referenceCount += fragmentNumber; - - while (!enet_list_empty(&fragments)) { - fragment = (ENetOutgoingCommand *) enet_list_remove(enet_list_begin(&fragments)); - enet_peer_setup_outgoing_command(peer, fragment); - } - - return 0; - } - - command.header.channelID = channelID; - - if ((packet->flags & (ENET_PACKET_FLAG_RELIABLE | ENET_PACKET_FLAG_UNSEQUENCED)) == ENET_PACKET_FLAG_UNSEQUENCED) { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED | ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - command.sendUnsequenced.dataLength = ENET_HOST_TO_NET_16(packet->dataLength); - } - else if (packet->flags & ENET_PACKET_FLAG_RELIABLE || channel->outgoingUnreliableSequenceNumber >= 0xFFFF) { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_RELIABLE | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.sendReliable.dataLength = ENET_HOST_TO_NET_16(packet->dataLength); - } - else { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE; - command.sendUnreliable.dataLength = ENET_HOST_TO_NET_16(packet->dataLength); - } - - if (enet_peer_queue_outgoing_command(peer, &command, packet, 0, packet->dataLength) == NULL) { - return -1; - } - - return 0; - } // enet_peer_send - - /** Attempts to dequeue any incoming queued packet. - * @param peer peer to dequeue packets from - * @param channelID holds the channel ID of the channel the packet was received on success - * @returns a pointer to the packet, or NULL if there are no available incoming queued packets - */ - ENetPacket * enet_peer_receive(ENetPeer *peer, enet_uint8 *channelID) { - ENetIncomingCommand *incomingCommand; - ENetPacket *packet; - - if (enet_list_empty(&peer->dispatchedCommands)) { - return NULL; - } - - incomingCommand = (ENetIncomingCommand *) enet_list_remove(enet_list_begin(&peer->dispatchedCommands)); - - if (channelID != NULL) { - *channelID = incomingCommand->command.header.channelID; - } - - packet = incomingCommand->packet; - --packet->referenceCount; - - if (incomingCommand->fragments != NULL) { - enet_free(incomingCommand->fragments); - } - - enet_free(incomingCommand); - peer->totalWaitingData -= packet->dataLength; - - return packet; - } - - static void enet_peer_reset_outgoing_commands(ENetList *queue) { - ENetOutgoingCommand *outgoingCommand; - - while (!enet_list_empty(queue)) { - outgoingCommand = (ENetOutgoingCommand *) enet_list_remove(enet_list_begin(queue)); - - if (outgoingCommand->packet != NULL) { - --outgoingCommand->packet->referenceCount; - - if (outgoingCommand->packet->referenceCount == 0) { - enet_packet_destroy(outgoingCommand->packet); - } - } - - enet_free(outgoingCommand); - } - } - - static void enet_peer_remove_incoming_commands(ENetList *queue, ENetListIterator startCommand, ENetListIterator endCommand) { - ENetListIterator currentCommand; - - for (currentCommand = startCommand; currentCommand != endCommand;) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - currentCommand = enet_list_next(currentCommand); - enet_list_remove(&incomingCommand->incomingCommandList); - - if (incomingCommand->packet != NULL) { - --incomingCommand->packet->referenceCount; - - if (incomingCommand->packet->referenceCount == 0) { - enet_packet_destroy(incomingCommand->packet); - } - } - - if (incomingCommand->fragments != NULL) { - enet_free(incomingCommand->fragments); - } - - enet_free(incomingCommand); - } - } - - static void enet_peer_reset_incoming_commands(ENetList *queue) { - enet_peer_remove_incoming_commands(queue, enet_list_begin(queue), enet_list_end(queue)); - } - - void enet_peer_reset_queues(ENetPeer *peer) { - ENetChannel *channel; - - if (peer->needsDispatch) { - enet_list_remove(&peer->dispatchList); - peer->needsDispatch = 0; - } - - while (!enet_list_empty(&peer->acknowledgements)) { - enet_free(enet_list_remove(enet_list_begin(&peer->acknowledgements))); - } - - enet_peer_reset_outgoing_commands(&peer->sentReliableCommands); - enet_peer_reset_outgoing_commands(&peer->sentUnreliableCommands); - enet_peer_reset_outgoing_commands(&peer->outgoingReliableCommands); - enet_peer_reset_outgoing_commands(&peer->outgoingUnreliableCommands); - enet_peer_reset_incoming_commands(&peer->dispatchedCommands); - - if (peer->channels != NULL && peer->channelCount > 0) { - for (channel = peer->channels; channel < &peer->channels[peer->channelCount]; ++channel) { - enet_peer_reset_incoming_commands(&channel->incomingReliableCommands); - enet_peer_reset_incoming_commands(&channel->incomingUnreliableCommands); - } - - enet_free(peer->channels); - } - - peer->channels = NULL; - peer->channelCount = 0; - } - - void enet_peer_on_connect(ENetPeer *peer) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - if (peer->incomingBandwidth != 0) { - ++peer->host->bandwidthLimitedPeers; - } - - ++peer->host->connectedPeers; - } - } - - void enet_peer_on_disconnect(ENetPeer *peer) { - if (peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - if (peer->incomingBandwidth != 0) { - --peer->host->bandwidthLimitedPeers; - } - - --peer->host->connectedPeers; - } - } - - /** Forcefully disconnects a peer. - * @param peer peer to forcefully disconnect - * @remarks The foreign host represented by the peer is not notified of the disconnection and will timeout - * on its connection to the local host. - */ - void enet_peer_reset(ENetPeer *peer) { - enet_peer_on_disconnect(peer); - - // We don't want to reset connectID here, otherwise, we can't get it in the Disconnect event - // peer->connectID = 0; - peer->outgoingPeerID = ENET_PROTOCOL_MAXIMUM_PEER_ID; - peer->state = ENET_PEER_STATE_DISCONNECTED; - peer->incomingBandwidth = 0; - peer->outgoingBandwidth = 0; - peer->incomingBandwidthThrottleEpoch = 0; - peer->outgoingBandwidthThrottleEpoch = 0; - peer->incomingDataTotal = 0; - peer->totalDataReceived = 0; - peer->outgoingDataTotal = 0; - peer->totalDataSent = 0; - peer->lastSendTime = 0; - peer->lastReceiveTime = 0; - peer->nextTimeout = 0; - peer->earliestTimeout = 0; - peer->packetLossEpoch = 0; - peer->packetsSent = 0; - peer->totalPacketsSent = 0; - peer->packetsLost = 0; - peer->totalPacketsLost = 0; - peer->packetLoss = 0; - peer->packetLossVariance = 0; - peer->packetThrottle = ENET_PEER_DEFAULT_PACKET_THROTTLE; - peer->packetThrottleLimit = ENET_PEER_PACKET_THROTTLE_SCALE; - peer->packetThrottleCounter = 0; - peer->packetThrottleEpoch = 0; - peer->packetThrottleAcceleration = ENET_PEER_PACKET_THROTTLE_ACCELERATION; - peer->packetThrottleDeceleration = ENET_PEER_PACKET_THROTTLE_DECELERATION; - peer->packetThrottleInterval = ENET_PEER_PACKET_THROTTLE_INTERVAL; - peer->pingInterval = ENET_PEER_PING_INTERVAL; - peer->timeoutLimit = ENET_PEER_TIMEOUT_LIMIT; - peer->timeoutMinimum = ENET_PEER_TIMEOUT_MINIMUM; - peer->timeoutMaximum = ENET_PEER_TIMEOUT_MAXIMUM; - peer->lastRoundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer->lowestRoundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer->lastRoundTripTimeVariance = 0; - peer->highestRoundTripTimeVariance = 0; - peer->roundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer->roundTripTimeVariance = 0; - peer->mtu = peer->host->mtu; - peer->reliableDataInTransit = 0; - peer->outgoingReliableSequenceNumber = 0; - peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - peer->incomingUnsequencedGroup = 0; - peer->outgoingUnsequencedGroup = 0; - peer->eventData = 0; - peer->totalWaitingData = 0; - - memset(peer->unsequencedWindow, 0, sizeof(peer->unsequencedWindow)); - enet_peer_reset_queues(peer); - } - - /** Sends a ping request to a peer. - * @param peer destination for the ping request - * @remarks ping requests factor into the mean round trip time as designated by the - * roundTripTime field in the ENetPeer structure. ENet automatically pings all connected - * peers at regular intervals, however, this function may be called to ensure more - * frequent ping requests. - */ - void enet_peer_ping(ENetPeer *peer) { - ENetProtocol command; - - if (peer->state != ENET_PEER_STATE_CONNECTED) { - return; - } - - command.header.command = ENET_PROTOCOL_COMMAND_PING | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - } - - /** Sets the interval at which pings will be sent to a peer. - * - * Pings are used both to monitor the liveness of the connection and also to dynamically - * adjust the throttle during periods of low traffic so that the throttle has reasonable - * responsiveness during traffic spikes. - * - * @param peer the peer to adjust - * @param pingInterval the interval at which to send pings; defaults to ENET_PEER_PING_INTERVAL if 0 - */ - void enet_peer_ping_interval(ENetPeer *peer, enet_uint32 pingInterval) { - peer->pingInterval = pingInterval ? pingInterval : ENET_PEER_PING_INTERVAL; - } - - /** Sets the timeout parameters for a peer. - * - * The timeout parameter control how and when a peer will timeout from a failure to acknowledge - * reliable traffic. Timeout values use an exponential backoff mechanism, where if a reliable - * packet is not acknowledge within some multiple of the average RTT plus a variance tolerance, - * the timeout will be doubled until it reaches a set limit. If the timeout is thus at this - * limit and reliable packets have been sent but not acknowledged within a certain minimum time - * period, the peer will be disconnected. Alternatively, if reliable packets have been sent - * but not acknowledged for a certain maximum time period, the peer will be disconnected regardless - * of the current timeout limit value. - * - * @param peer the peer to adjust - * @param timeoutLimit the timeout limit; defaults to ENET_PEER_TIMEOUT_LIMIT if 0 - * @param timeoutMinimum the timeout minimum; defaults to ENET_PEER_TIMEOUT_MINIMUM if 0 - * @param timeoutMaximum the timeout maximum; defaults to ENET_PEER_TIMEOUT_MAXIMUM if 0 - */ - - void enet_peer_timeout(ENetPeer *peer, enet_uint32 timeoutLimit, enet_uint32 timeoutMinimum, enet_uint32 timeoutMaximum) { - peer->timeoutLimit = timeoutLimit ? timeoutLimit : ENET_PEER_TIMEOUT_LIMIT; - peer->timeoutMinimum = timeoutMinimum ? timeoutMinimum : ENET_PEER_TIMEOUT_MINIMUM; - peer->timeoutMaximum = timeoutMaximum ? timeoutMaximum : ENET_PEER_TIMEOUT_MAXIMUM; - } - - /** Force an immediate disconnection from a peer. - * @param peer peer to disconnect - * @param data data describing the disconnection - * @remarks No ENET_EVENT_DISCONNECT event will be generated. The foreign peer is not - * guaranteed to receive the disconnect notification, and is reset immediately upon - * return from this function. - */ - void enet_peer_disconnect_now(ENetPeer *peer, enet_uint32 data) { - ENetProtocol command; - - if (peer->state == ENET_PEER_STATE_DISCONNECTED) { - return; - } - - if (peer->state != ENET_PEER_STATE_ZOMBIE && peer->state != ENET_PEER_STATE_DISCONNECTING) { - enet_peer_reset_queues(peer); - - command.header.command = ENET_PROTOCOL_COMMAND_DISCONNECT | ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - command.header.channelID = 0xFF; - command.disconnect.data = ENET_HOST_TO_NET_32(data); - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - enet_host_flush(peer->host); - } - - enet_peer_reset(peer); - } - - /** Request a disconnection from a peer. - * @param peer peer to request a disconnection - * @param data data describing the disconnection - * @remarks An ENET_EVENT_DISCONNECT event will be generated by enet_host_service() - * once the disconnection is complete. - */ - void enet_peer_disconnect(ENetPeer *peer, enet_uint32 data) { - ENetProtocol command; - - if (peer->state == ENET_PEER_STATE_DISCONNECTING || - peer->state == ENET_PEER_STATE_DISCONNECTED || - peer->state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT || - peer->state == ENET_PEER_STATE_ZOMBIE - ) { - return; - } - - enet_peer_reset_queues(peer); - - command.header.command = ENET_PROTOCOL_COMMAND_DISCONNECT; - command.header.channelID = 0xFF; - command.disconnect.data = ENET_HOST_TO_NET_32(data); - - if (peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - command.header.command |= ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - } else { - command.header.command |= ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - } - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - - if (peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - enet_peer_on_disconnect(peer); - - peer->state = ENET_PEER_STATE_DISCONNECTING; - } else { - enet_host_flush(peer->host); - enet_peer_reset(peer); - } - } - - /** Request a disconnection from a peer, but only after all queued outgoing packets are sent. - * @param peer peer to request a disconnection - * @param data data describing the disconnection - * @remarks An ENET_EVENT_DISCONNECT event will be generated by enet_host_service() - * once the disconnection is complete. - */ - void enet_peer_disconnect_later(ENetPeer *peer, enet_uint32 data) { - if ((peer->state == ENET_PEER_STATE_CONNECTED || peer->state == ENET_PEER_STATE_DISCONNECT_LATER) && - !(enet_list_empty(&peer->outgoingReliableCommands) && - enet_list_empty(&peer->outgoingUnreliableCommands) && - enet_list_empty(&peer->sentReliableCommands)) - ) { - peer->state = ENET_PEER_STATE_DISCONNECT_LATER; - peer->eventData = data; - } else { - enet_peer_disconnect(peer, data); - } - } - - ENetAcknowledgement *enet_peer_queue_acknowledgement(ENetPeer *peer, const ENetProtocol *command, enet_uint16 sentTime) { - ENetAcknowledgement *acknowledgement; - - if (command->header.channelID < peer->channelCount) { - ENetChannel *channel = &peer->channels[command->header.channelID]; - enet_uint16 reliableWindow = command->header.reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - enet_uint16 currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (command->header.reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1 && reliableWindow <= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS) { - return NULL; - } - } - - acknowledgement = (ENetAcknowledgement *) enet_malloc(sizeof(ENetAcknowledgement)); - if (acknowledgement == NULL) { - return NULL; - } - - peer->outgoingDataTotal += sizeof(ENetProtocolAcknowledge); - - acknowledgement->sentTime = sentTime; - acknowledgement->command = *command; - - enet_list_insert(enet_list_end(&peer->acknowledgements), acknowledgement); - return acknowledgement; - } - - void enet_peer_setup_outgoing_command(ENetPeer *peer, ENetOutgoingCommand *outgoingCommand) { - ENetChannel *channel = &peer->channels[outgoingCommand->command.header.channelID]; - peer->outgoingDataTotal += enet_protocol_command_size(outgoingCommand->command.header.command) + outgoingCommand->fragmentLength; - - if (outgoingCommand->command.header.channelID == 0xFF) { - ++peer->outgoingReliableSequenceNumber; - - outgoingCommand->reliableSequenceNumber = peer->outgoingReliableSequenceNumber; - outgoingCommand->unreliableSequenceNumber = 0; - } - else if (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) { - ++channel->outgoingReliableSequenceNumber; - channel->outgoingUnreliableSequenceNumber = 0; - - outgoingCommand->reliableSequenceNumber = channel->outgoingReliableSequenceNumber; - outgoingCommand->unreliableSequenceNumber = 0; - } - else if (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED) { - ++peer->outgoingUnsequencedGroup; - - outgoingCommand->reliableSequenceNumber = 0; - outgoingCommand->unreliableSequenceNumber = 0; - } - else { - if (outgoingCommand->fragmentOffset == 0) { - ++channel->outgoingUnreliableSequenceNumber; - } - - outgoingCommand->reliableSequenceNumber = channel->outgoingReliableSequenceNumber; - outgoingCommand->unreliableSequenceNumber = channel->outgoingUnreliableSequenceNumber; - } - - outgoingCommand->sendAttempts = 0; - outgoingCommand->sentTime = 0; - outgoingCommand->roundTripTimeout = 0; - outgoingCommand->roundTripTimeoutLimit = 0; - outgoingCommand->command.header.reliableSequenceNumber = ENET_HOST_TO_NET_16(outgoingCommand->reliableSequenceNumber); - - switch (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) { - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - outgoingCommand->command.sendUnreliable.unreliableSequenceNumber = ENET_HOST_TO_NET_16(outgoingCommand->unreliableSequenceNumber); - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - outgoingCommand->command.sendUnsequenced.unsequencedGroup = ENET_HOST_TO_NET_16(peer->outgoingUnsequencedGroup); - break; - - default: - break; - } - - if (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) { - enet_list_insert(enet_list_end(&peer->outgoingReliableCommands), outgoingCommand); - } else { - enet_list_insert(enet_list_end(&peer->outgoingUnreliableCommands), outgoingCommand); - } - } - - ENetOutgoingCommand * enet_peer_queue_outgoing_command(ENetPeer *peer, const ENetProtocol *command, ENetPacket *packet, enet_uint32 offset, enet_uint16 length) { - ENetOutgoingCommand *outgoingCommand = (ENetOutgoingCommand *) enet_malloc(sizeof(ENetOutgoingCommand)); - - if (outgoingCommand == NULL) { - return NULL; - } - - outgoingCommand->command = *command; - outgoingCommand->fragmentOffset = offset; - outgoingCommand->fragmentLength = length; - outgoingCommand->packet = packet; - if (packet != NULL) { - ++packet->referenceCount; - } - - enet_peer_setup_outgoing_command(peer, outgoingCommand); - return outgoingCommand; - } - - void enet_peer_dispatch_incoming_unreliable_commands(ENetPeer *peer, ENetChannel *channel) { - ENetListIterator droppedCommand, startCommand, currentCommand; - - for (droppedCommand = startCommand = currentCommand = enet_list_begin(&channel->incomingUnreliableCommands); - currentCommand != enet_list_end(&channel->incomingUnreliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) { - continue; - } - - if (incomingCommand->reliableSequenceNumber == channel->incomingReliableSequenceNumber) { - if (incomingCommand->fragmentsRemaining <= 0) { - channel->incomingUnreliableSequenceNumber = incomingCommand->unreliableSequenceNumber; - continue; - } - - if (startCommand != currentCommand) { - enet_list_move(enet_list_end(&peer->dispatchedCommands), startCommand, enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - - droppedCommand = currentCommand; - } else if (droppedCommand != currentCommand) { - droppedCommand = enet_list_previous(currentCommand); - } - } else { - enet_uint16 reliableWindow = incomingCommand->reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - enet_uint16 currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow >= currentWindow && reliableWindow < currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - break; - } - - droppedCommand = enet_list_next(currentCommand); - - if (startCommand != currentCommand) { - enet_list_move(enet_list_end(&peer->dispatchedCommands), startCommand, enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - } - } - - startCommand = enet_list_next(currentCommand); - } - - if (startCommand != currentCommand) { - enet_list_move(enet_list_end(&peer->dispatchedCommands), startCommand, enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - - droppedCommand = currentCommand; - } - - enet_peer_remove_incoming_commands(&channel->incomingUnreliableCommands,enet_list_begin(&channel->incomingUnreliableCommands), droppedCommand); - } - - void enet_peer_dispatch_incoming_reliable_commands(ENetPeer *peer, ENetChannel *channel) { - ENetListIterator currentCommand; - - for (currentCommand = enet_list_begin(&channel->incomingReliableCommands); - currentCommand != enet_list_end(&channel->incomingReliableCommands); - currentCommand = enet_list_next(currentCommand) - ) { - ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (incomingCommand->fragmentsRemaining > 0 || incomingCommand->reliableSequenceNumber != (enet_uint16) (channel->incomingReliableSequenceNumber + 1)) { - break; - } - - channel->incomingReliableSequenceNumber = incomingCommand->reliableSequenceNumber; - - if (incomingCommand->fragmentCount > 0) { - channel->incomingReliableSequenceNumber += incomingCommand->fragmentCount - 1; - } - } - - if (currentCommand == enet_list_begin(&channel->incomingReliableCommands)) { - return; - } - - channel->incomingUnreliableSequenceNumber = 0; - enet_list_move(enet_list_end(&peer->dispatchedCommands), enet_list_begin(&channel->incomingReliableCommands), enet_list_previous(currentCommand)); - - if (!peer->needsDispatch) { - enet_list_insert(enet_list_end(&peer->host->dispatchQueue), &peer->dispatchList); - peer->needsDispatch = 1; - } - - if (!enet_list_empty(&channel->incomingUnreliableCommands)) { - enet_peer_dispatch_incoming_unreliable_commands(peer, channel); - } - } - - ENetIncomingCommand * enet_peer_queue_incoming_command(ENetPeer *peer, const ENetProtocol *command, const void *data, size_t dataLength, enet_uint32 flags, enet_uint32 fragmentCount) { - static ENetIncomingCommand dummyCommand; - - ENetChannel *channel = &peer->channels[command->header.channelID]; - enet_uint32 unreliableSequenceNumber = 0, reliableSequenceNumber = 0; - enet_uint16 reliableWindow, currentWindow; - ENetIncomingCommand *incomingCommand; - ENetListIterator currentCommand; - ENetPacket *packet = NULL; - - if (peer->state == ENET_PEER_STATE_DISCONNECT_LATER) { - goto discardCommand; - } - - if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) { - reliableSequenceNumber = command->header.reliableSequenceNumber; - reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - } - - if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) { - goto discardCommand; - } - } - - switch (command->header.command & ENET_PROTOCOL_COMMAND_MASK) { - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - if (reliableSequenceNumber == channel->incomingReliableSequenceNumber) { - goto discardCommand; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingReliableCommands)); - currentCommand != enet_list_end(&channel->incomingReliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber <= reliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) { - break; - } - - goto discardCommand; - } - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT: - unreliableSequenceNumber = ENET_NET_TO_HOST_16(command->sendUnreliable.unreliableSequenceNumber); - - if (reliableSequenceNumber == channel->incomingReliableSequenceNumber && unreliableSequenceNumber <= channel->incomingUnreliableSequenceNumber) { - goto discardCommand; - } - - for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingUnreliableCommands)); - currentCommand != enet_list_end(&channel->incomingUnreliableCommands); - currentCommand = enet_list_previous(currentCommand) - ) { - incomingCommand = (ENetIncomingCommand *) currentCommand; - - if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) { - continue; - } - - if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) { - continue; - } - } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) { - break; - } - - if (incomingCommand->reliableSequenceNumber > reliableSequenceNumber) { - continue; - } - - if (incomingCommand->unreliableSequenceNumber <= unreliableSequenceNumber) { - if (incomingCommand->unreliableSequenceNumber < unreliableSequenceNumber) { - break; - } - - goto discardCommand; - } - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - currentCommand = enet_list_end(&channel->incomingUnreliableCommands); - break; - - default: - goto discardCommand; - } - - if (peer->totalWaitingData >= peer->host->maximumWaitingData) { - goto notifyError; - } - - packet = enet_packet_create(data, dataLength, flags); - if (packet == NULL) { - goto notifyError; - } - - incomingCommand = (ENetIncomingCommand *) enet_malloc(sizeof(ENetIncomingCommand)); - if (incomingCommand == NULL) { - goto notifyError; - } - - incomingCommand->reliableSequenceNumber = command->header.reliableSequenceNumber; - incomingCommand->unreliableSequenceNumber = unreliableSequenceNumber & 0xFFFF; - incomingCommand->command = *command; - incomingCommand->fragmentCount = fragmentCount; - incomingCommand->fragmentsRemaining = fragmentCount; - incomingCommand->packet = packet; - incomingCommand->fragments = NULL; - - if (fragmentCount > 0) { - if (fragmentCount <= ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT) { - incomingCommand->fragments = (enet_uint32 *) enet_malloc((fragmentCount + 31) / 32 * sizeof(enet_uint32)); - } - - if (incomingCommand->fragments == NULL) { - enet_free(incomingCommand); - - goto notifyError; - } - - memset(incomingCommand->fragments, 0, (fragmentCount + 31) / 32 * sizeof(enet_uint32)); - } - - if (packet != NULL) { - ++packet->referenceCount; - peer->totalWaitingData += packet->dataLength; - } - - enet_list_insert(enet_list_next(currentCommand), incomingCommand); - - switch (command->header.command & ENET_PROTOCOL_COMMAND_MASK) { - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - enet_peer_dispatch_incoming_reliable_commands(peer, channel); - break; - - default: - enet_peer_dispatch_incoming_unreliable_commands(peer, channel); - break; - } - - return incomingCommand; - - discardCommand: - if (fragmentCount > 0) { - goto notifyError; - } - - if (packet != NULL && packet->referenceCount == 0) { - enet_packet_destroy(packet); - } - - return &dummyCommand; - - notifyError: - if (packet != NULL && packet->referenceCount == 0) { - enet_packet_destroy(packet); - } - - return NULL; - } /* enet_peer_queue_incoming_command */ - -// =======================================================================// -// ! -// ! Host -// ! -// =======================================================================// - - /** Creates a host for communicating to peers. - * - * @param address the address at which other peers may connect to this host. If NULL, then no peers may connect to the host. - * @param peerCount the maximum number of peers that should be allocated for the host. - * @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT - * @param incomingBandwidth downstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth. - * @param outgoingBandwidth upstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth. - * - * @returns the host on success and NULL on failure - * - * @remarks ENet will strategically drop packets on specific sides of a connection between hosts - * to ensure the host's bandwidth is not overwhelmed. The bandwidth parameters also determine - * the window size of a connection which limits the amount of reliable packets that may be in transit - * at any given time. - */ - ENetHost * enet_host_create(const ENetAddress *address, size_t peerCount, size_t channelLimit, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth) { - ENetHost *host; - ENetPeer *currentPeer; - - if (peerCount > ENET_PROTOCOL_MAXIMUM_PEER_ID) { - return NULL; - } - - host = (ENetHost *) enet_malloc(sizeof(ENetHost)); - if (host == NULL) { return NULL; } - memset(host, 0, sizeof(ENetHost)); - - host->peers = (ENetPeer *) enet_malloc(peerCount * sizeof(ENetPeer)); - if (host->peers == NULL) { - enet_free(host); - return NULL; - } - - memset(host->peers, 0, peerCount * sizeof(ENetPeer)); - - host->socket = enet_socket_create(ENET_SOCKET_TYPE_DATAGRAM); - if (host->socket != ENET_SOCKET_NULL) { - enet_socket_set_option (host->socket, ENET_SOCKOPT_IPV6_V6ONLY, 0); - } - - if (host->socket == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind(host->socket, address) < 0)) { - if (host->socket != ENET_SOCKET_NULL) { - enet_socket_destroy(host->socket); - } - - enet_free(host->peers); - enet_free(host); - - return NULL; - } - - enet_socket_set_option(host->socket, ENET_SOCKOPT_NONBLOCK, 1); - enet_socket_set_option(host->socket, ENET_SOCKOPT_BROADCAST, 1); - enet_socket_set_option(host->socket, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE); - enet_socket_set_option(host->socket, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE); - enet_socket_set_option(host->socket, ENET_SOCKOPT_IPV6_V6ONLY, 0); - - if (address != NULL && enet_socket_get_address(host->socket, &host->address) < 0) { - host->address = *address; - } - - if (!channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - } else if (channelLimit < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) { - channelLimit = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - } - - host->randomSeed = (enet_uint32) (size_t) host; - host->randomSeed += enet_host_random_seed(); - host->randomSeed = (host->randomSeed << 16) | (host->randomSeed >> 16); - host->channelLimit = channelLimit; - host->incomingBandwidth = incomingBandwidth; - host->outgoingBandwidth = outgoingBandwidth; - host->bandwidthThrottleEpoch = 0; - host->recalculateBandwidthLimits = 0; - host->mtu = ENET_HOST_DEFAULT_MTU; - host->peerCount = peerCount; - host->commandCount = 0; - host->bufferCount = 0; - host->checksum = NULL; - host->receivedAddress.host = ENET_HOST_ANY; - host->receivedAddress.port = 0; - host->receivedData = NULL; - host->receivedDataLength = 0; - host->totalSentData = 0; - host->totalSentPackets = 0; - host->totalReceivedData = 0; - host->totalReceivedPackets = 0; - host->connectedPeers = 0; - host->bandwidthLimitedPeers = 0; - host->duplicatePeers = ENET_PROTOCOL_MAXIMUM_PEER_ID; - host->maximumPacketSize = ENET_HOST_DEFAULT_MAXIMUM_PACKET_SIZE; - host->maximumWaitingData = ENET_HOST_DEFAULT_MAXIMUM_WAITING_DATA; - host->compressor.context = NULL; - host->compressor.compress = NULL; - host->compressor.decompress = NULL; - host->compressor.destroy = NULL; - host->intercept = NULL; - - enet_list_clear(&host->dispatchQueue); - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - currentPeer->host = host; - currentPeer->incomingPeerID = currentPeer - host->peers; - currentPeer->outgoingSessionID = currentPeer->incomingSessionID = 0xFF; - currentPeer->data = NULL; - - enet_list_clear(¤tPeer->acknowledgements); - enet_list_clear(¤tPeer->sentReliableCommands); - enet_list_clear(¤tPeer->sentUnreliableCommands); - enet_list_clear(¤tPeer->outgoingReliableCommands); - enet_list_clear(¤tPeer->outgoingUnreliableCommands); - enet_list_clear(¤tPeer->dispatchedCommands); - - enet_peer_reset(currentPeer); - } - - return host; - } /* enet_host_create */ - - /** Destroys the host and all resources associated with it. - * @param host pointer to the host to destroy - */ - void enet_host_destroy(ENetHost *host) { - ENetPeer *currentPeer; - - if (host == NULL) { - return; - } - - enet_socket_destroy(host->socket); - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - enet_peer_reset(currentPeer); - } - - if (host->compressor.context != NULL && host->compressor.destroy) { - (*host->compressor.destroy)(host->compressor.context); - } - - enet_free(host->peers); - enet_free(host); - } - - /** Initiates a connection to a foreign host. - * @param host host seeking the connection - * @param address destination for the connection - * @param channelCount number of channels to allocate - * @param data user data supplied to the receiving host - * @returns a peer representing the foreign host on success, NULL on failure - * @remarks The peer returned will have not completed the connection until enet_host_service() - * notifies of an ENET_EVENT_TYPE_CONNECT event for the peer. - */ - ENetPeer * enet_host_connect(ENetHost *host, const ENetAddress *address, size_t channelCount, enet_uint32 data) { - ENetPeer *currentPeer; - ENetChannel *channel; - ENetProtocol command; - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) { - channelCount = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - } else if (channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - channelCount = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - } - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED) { - break; - } - } - - if (currentPeer >= &host->peers[host->peerCount]) { - return NULL; - } - - currentPeer->channels = (ENetChannel *) enet_malloc(channelCount * sizeof(ENetChannel)); - if (currentPeer->channels == NULL) { - return NULL; - } - - currentPeer->channelCount = channelCount; - currentPeer->state = ENET_PEER_STATE_CONNECTING; - currentPeer->address = *address; - currentPeer->connectID = ++host->randomSeed; - - if (host->outgoingBandwidth == 0) { - currentPeer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } else { - currentPeer->windowSize = (host->outgoingBandwidth / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } - - if (currentPeer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) { - currentPeer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - } else if (currentPeer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) { - currentPeer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - } - - for (channel = currentPeer->channels; channel < ¤tPeer->channels[channelCount]; ++channel) { - channel->outgoingReliableSequenceNumber = 0; - channel->outgoingUnreliableSequenceNumber = 0; - channel->incomingReliableSequenceNumber = 0; - channel->incomingUnreliableSequenceNumber = 0; - - enet_list_clear(&channel->incomingReliableCommands); - enet_list_clear(&channel->incomingUnreliableCommands); - - channel->usedReliableWindows = 0; - memset(channel->reliableWindows, 0, sizeof(channel->reliableWindows)); - } - - command.header.command = ENET_PROTOCOL_COMMAND_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - command.connect.outgoingPeerID = ENET_HOST_TO_NET_16(currentPeer->incomingPeerID); - command.connect.incomingSessionID = currentPeer->incomingSessionID; - command.connect.outgoingSessionID = currentPeer->outgoingSessionID; - command.connect.mtu = ENET_HOST_TO_NET_32(currentPeer->mtu); - command.connect.windowSize = ENET_HOST_TO_NET_32(currentPeer->windowSize); - command.connect.channelCount = ENET_HOST_TO_NET_32(channelCount); - command.connect.incomingBandwidth = ENET_HOST_TO_NET_32(host->incomingBandwidth); - command.connect.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth); - command.connect.packetThrottleInterval = ENET_HOST_TO_NET_32(currentPeer->packetThrottleInterval); - command.connect.packetThrottleAcceleration = ENET_HOST_TO_NET_32(currentPeer->packetThrottleAcceleration); - command.connect.packetThrottleDeceleration = ENET_HOST_TO_NET_32(currentPeer->packetThrottleDeceleration); - command.connect.connectID = currentPeer->connectID; - command.connect.data = ENET_HOST_TO_NET_32(data); - - enet_peer_queue_outgoing_command(currentPeer, &command, NULL, 0, 0); - - return currentPeer; - } /* enet_host_connect */ - - /** Queues a packet to be sent to all peers associated with the host. - * @param host host on which to broadcast the packet - * @param channelID channel on which to broadcast - * @param packet packet to broadcast - */ - void enet_host_broadcast(ENetHost *host, enet_uint8 channelID, ENetPacket *packet) { - ENetPeer *currentPeer; - - for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) { - if (currentPeer->state != ENET_PEER_STATE_CONNECTED) { - continue; - } - - enet_peer_send(currentPeer, channelID, packet); - } - - if (packet->referenceCount == 0) { - enet_packet_destroy(packet); - } - } - - /** Sends raw data to specified address. Useful when you want to send unconnected data using host's socket. - * @param host host sending data - * @param address destination address - * @param data data pointer - * @param dataLength length of data to send - * @retval >=0 bytes sent - * @retval <0 error - * @sa enet_socket_send - */ - int enet_host_send_raw(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t dataLength) { - ENetBuffer buffer; - buffer.data = data; - buffer.dataLength = dataLength; - return enet_socket_send(host->socket, address, &buffer, 1); - } - - /** Sends raw data to specified address with extended arguments. Allows to send only part of data, handy for other programming languages. - * I.e. if you have data =- { 0, 1, 2, 3 } and call function as enet_host_send_raw_ex(data, 1, 2) then it will skip 1 byte and send 2 bytes { 1, 2 }. - * @param host host sending data - * @param address destination address - * @param data data pointer - * @param skipBytes number of bytes to skip from start of data - * @param bytesToSend number of bytes to send - * @retval >=0 bytes sent - * @retval <0 error - * @sa enet_socket_send - */ - int enet_host_send_raw_ex(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t skipBytes, size_t bytesToSend) { - ENetBuffer buffer; - buffer.data = data + skipBytes; - buffer.dataLength = bytesToSend; - return enet_socket_send(host->socket, address, &buffer, 1); - } - - /** Sets intercept callback for the host. - * @param host host to set a callback - * @param callback intercept callback - */ - void enet_host_set_intercept(ENetHost *host, const ENetInterceptCallback callback) { - host->intercept = callback; - } - - /** Sets the packet compressor the host should use to compress and decompress packets. - * @param host host to enable or disable compression for - * @param compressor callbacks for for the packet compressor; if NULL, then compression is disabled - */ - void enet_host_compress(ENetHost *host, const ENetCompressor *compressor) { - if (host->compressor.context != NULL && host->compressor.destroy) { - (*host->compressor.destroy)(host->compressor.context); - } - - if (compressor) { - host->compressor = *compressor; - } else { - host->compressor.context = NULL; - } - } - - /** Limits the maximum allowed channels of future incoming connections. - * @param host host to limit - * @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT - */ - void enet_host_channel_limit(ENetHost *host, size_t channelLimit) { - if (!channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) { - channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - } else if (channelLimit < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) { - channelLimit = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - } - - host->channelLimit = channelLimit; - } - - /** Adjusts the bandwidth limits of a host. - * @param host host to adjust - * @param incomingBandwidth new incoming bandwidth - * @param outgoingBandwidth new outgoing bandwidth - * @remarks the incoming and outgoing bandwidth parameters are identical in function to those - * specified in enet_host_create(). - */ - void enet_host_bandwidth_limit(ENetHost *host, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth) { - host->incomingBandwidth = incomingBandwidth; - host->outgoingBandwidth = outgoingBandwidth; - host->recalculateBandwidthLimits = 1; - } - - void enet_host_bandwidth_throttle(ENetHost *host) { - enet_uint32 timeCurrent = enet_time_get(); - enet_uint32 elapsedTime = timeCurrent - host->bandwidthThrottleEpoch; - enet_uint32 peersRemaining = (enet_uint32) host->connectedPeers; - enet_uint32 dataTotal = ~0; - enet_uint32 bandwidth = ~0; - enet_uint32 throttle = 0; - enet_uint32 bandwidthLimit = 0; - - int needsAdjustment = host->bandwidthLimitedPeers > 0 ? 1 : 0; - ENetPeer *peer; - ENetProtocol command; - - if (elapsedTime < ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL) { - return; - } - - if (host->outgoingBandwidth == 0 && host->incomingBandwidth == 0) { - return; - } - - host->bandwidthThrottleEpoch = timeCurrent; - - if (peersRemaining == 0) { - return; - } - - if (host->outgoingBandwidth != 0) { - dataTotal = 0; - bandwidth = (host->outgoingBandwidth * elapsedTime) / 1000; - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - continue; - } - - dataTotal += peer->outgoingDataTotal; - } - } - - while (peersRemaining > 0 && needsAdjustment != 0) { - needsAdjustment = 0; - - if (dataTotal <= bandwidth) { - throttle = ENET_PEER_PACKET_THROTTLE_SCALE; - } else { - throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal; - } - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - enet_uint32 peerBandwidth; - - if ((peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer->incomingBandwidth == 0 || - peer->outgoingBandwidthThrottleEpoch == timeCurrent - ) { - continue; - } - - peerBandwidth = (peer->incomingBandwidth * elapsedTime) / 1000; - if ((throttle * peer->outgoingDataTotal) / ENET_PEER_PACKET_THROTTLE_SCALE <= peerBandwidth) { - continue; - } - - peer->packetThrottleLimit = (peerBandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / peer->outgoingDataTotal; - - if (peer->packetThrottleLimit == 0) { - peer->packetThrottleLimit = 1; - } - - if (peer->packetThrottle > peer->packetThrottleLimit) { - peer->packetThrottle = peer->packetThrottleLimit; - } - - peer->outgoingBandwidthThrottleEpoch = timeCurrent; - - peer->incomingDataTotal = 0; - peer->outgoingDataTotal = 0; - - needsAdjustment = 1; - --peersRemaining; - bandwidth -= peerBandwidth; - dataTotal -= peerBandwidth; - } - } - - if (peersRemaining > 0) { - if (dataTotal <= bandwidth) { - throttle = ENET_PEER_PACKET_THROTTLE_SCALE; - } else { - throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal; - } - - for (peer = host->peers; - peer < &host->peers[host->peerCount]; - ++peer) - { - if ((peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) || peer->outgoingBandwidthThrottleEpoch == timeCurrent) { - continue; - } - - peer->packetThrottleLimit = throttle; - - if (peer->packetThrottle > peer->packetThrottleLimit) { - peer->packetThrottle = peer->packetThrottleLimit; - } - - peer->incomingDataTotal = 0; - peer->outgoingDataTotal = 0; - } - } - - if (host->recalculateBandwidthLimits) { - host->recalculateBandwidthLimits = 0; - - peersRemaining = (enet_uint32) host->connectedPeers; - bandwidth = host->incomingBandwidth; - needsAdjustment = 1; - - if (bandwidth == 0) { - bandwidthLimit = 0; - } else { - while (peersRemaining > 0 && needsAdjustment != 0) { - needsAdjustment = 0; - bandwidthLimit = bandwidth / peersRemaining; - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - if ((peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer->incomingBandwidthThrottleEpoch == timeCurrent - ) { - continue; - } - - if (peer->outgoingBandwidth > 0 && peer->outgoingBandwidth >= bandwidthLimit) { - continue; - } - - peer->incomingBandwidthThrottleEpoch = timeCurrent; - - needsAdjustment = 1; - --peersRemaining; - bandwidth -= peer->outgoingBandwidth; - } - } - } - - for (peer = host->peers; peer < &host->peers[host->peerCount]; ++peer) { - if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) { - continue; - } - - command.header.command = ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - command.bandwidthLimit.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth); - - if (peer->incomingBandwidthThrottleEpoch == timeCurrent) { - command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32(peer->outgoingBandwidth); - } else { - command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32(bandwidthLimit); - } - - enet_peer_queue_outgoing_command(peer, &command, NULL, 0, 0); - } - } - } /* enet_host_bandwidth_throttle */ - -// =======================================================================// -// ! -// ! Time -// ! -// =======================================================================// - - #ifdef _WIN32 - static LARGE_INTEGER getFILETIMEoffset() { - SYSTEMTIME s; - FILETIME f; - LARGE_INTEGER t; - - s.wYear = 1970; - s.wMonth = 1; - s.wDay = 1; - s.wHour = 0; - s.wMinute = 0; - s.wSecond = 0; - s.wMilliseconds = 0; - SystemTimeToFileTime(&s, &f); - t.QuadPart = f.dwHighDateTime; - t.QuadPart <<= 32; - t.QuadPart |= f.dwLowDateTime; - return (t); - } - - int clock_gettime(int X, struct timespec *tv) { - LARGE_INTEGER t; - FILETIME f; - double microseconds; - static LARGE_INTEGER offset; - static double frequencyToMicroseconds; - static int initialized = 0; - static BOOL usePerformanceCounter = 0; - - if (!initialized) { - LARGE_INTEGER performanceFrequency; - initialized = 1; - usePerformanceCounter = QueryPerformanceFrequency(&performanceFrequency); - if (usePerformanceCounter) { - QueryPerformanceCounter(&offset); - frequencyToMicroseconds = (double)performanceFrequency.QuadPart / 1000000.; - } else { - offset = getFILETIMEoffset(); - frequencyToMicroseconds = 10.; - } - } - if (usePerformanceCounter) { - QueryPerformanceCounter(&t); - } else { - GetSystemTimeAsFileTime(&f); - t.QuadPart = f.dwHighDateTime; - t.QuadPart <<= 32; - t.QuadPart |= f.dwLowDateTime; - } - - t.QuadPart -= offset.QuadPart; - microseconds = (double)t.QuadPart / frequencyToMicroseconds; - t.QuadPart = (LONGLONG)microseconds; - tv->tv_sec = (long)(t.QuadPart / 1000000); - tv->tv_nsec = t.QuadPart % 1000000 * 1000; - return (0); - } - #elif __APPLE__ && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200 && !defined CLOCK_MONOTONIC - #define CLOCK_MONOTONIC 0 - - int clock_gettime(int X, struct timespec *ts) { - clock_serv_t cclock; - mach_timespec_t mts; - - host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &cclock); - clock_get_time(cclock, &mts); - mach_port_deallocate(mach_task_self(), cclock); - - ts->tv_sec = mts.tv_sec; - ts->tv_nsec = mts.tv_nsec; - - return 0; - } - #endif - - enet_uint32 enet_time_get() { - // TODO enet uses 32 bit timestamps. We should modify it to use - // 64 bit timestamps, but this is not trivial since we'd end up - // changing half the structs in enet. For now, retain 32 bits, but - // use an offset so we don't run out of bits. Basically, the first - // call of enet_time_get() will always return 1, and follow-up calls - // indicate elapsed time since the first call. - // - // Note that we don't want to return 0 from the first call, in case - // some part of enet uses 0 as a special value (meaning time not set - // for example). - static uint64_t start_time_ns = 0; - - struct timespec ts; - #if defined(CLOCK_MONOTONIC_RAW) - clock_gettime(CLOCK_MONOTONIC_RAW, &ts); - #else - clock_gettime(CLOCK_MONOTONIC, &ts); - #endif - - static const uint64_t ns_in_s = 1000 * 1000 * 1000; - static const uint64_t ns_in_ms = 1000 * 1000; - uint64_t current_time_ns = ts.tv_nsec + (uint64_t)ts.tv_sec * ns_in_s; - - // Most of the time we just want to atomically read the start time. We - // could just use a single CAS instruction instead of this if, but it - // would be slower in the average case. - // - // Note that statics are auto-initialized to zero, and starting a thread - // implies a memory barrier. So we know that whatever thread calls this, - // it correctly sees the start_time_ns as 0 initially. - uint64_t offset_ns = ENET_ATOMIC_READ(&start_time_ns); - if (offset_ns == 0) { - // We still need to CAS, since two different threads can get here - // at the same time. - // - // We assume that current_time_ns is > 1ms. - // - // Set the value of the start_time_ns, such that the first timestamp - // is at 1ms. This ensures 0 remains a special value. - uint64_t want_value = current_time_ns - 1 * ns_in_ms; - uint64_t old_value = ENET_ATOMIC_CAS(&start_time_ns, 0, want_value); - offset_ns = old_value == 0 ? want_value : old_value; - } - - uint64_t result_in_ns = current_time_ns - offset_ns; - return (enet_uint32)(result_in_ns / ns_in_ms); - } - -// =======================================================================// -// ! -// ! Platform Specific (Unix) -// ! -// =======================================================================// - - #ifndef _WIN32 - - int enet_initialize(void) { - return 0; - } - - void enet_deinitialize(void) {} - - enet_uint64 enet_host_random_seed(void) { - return (enet_uint64) time(NULL); - } - - int enet_address_set_host_ip(ENetAddress *address, const char *name) { - if (!inet_pton(AF_INET6, name, &address->host)) { - return -1; - } - - return 0; - } - - int enet_address_set_host(ENetAddress *address, const char *name) { - struct addrinfo hints, *resultList = NULL, *result = NULL; - - memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_UNSPEC; - - if (getaddrinfo(name, NULL, &hints, &resultList) != 0) { - return -1; - } - - for (result = resultList; result != NULL; result = result->ai_next) { - if (result->ai_addr != NULL && result->ai_addrlen >= sizeof(struct sockaddr_in)) { - if (result->ai_family == AF_INET) { - struct sockaddr_in * sin = (struct sockaddr_in *) result->ai_addr; - - ((uint32_t *)&address->host.s6_addr)[0] = 0; - ((uint32_t *)&address->host.s6_addr)[1] = 0; - ((uint32_t *)&address->host.s6_addr)[2] = htonl(0xffff); - ((uint32_t *)&address->host.s6_addr)[3] = sin->sin_addr.s_addr; - - freeaddrinfo(resultList); - - return 0; - } - else if(result->ai_family == AF_INET6) { - struct sockaddr_in6 * sin = (struct sockaddr_in6 *)result->ai_addr; - - address->host = sin->sin6_addr; - address->sin6_scope_id = sin->sin6_scope_id; - - freeaddrinfo(resultList); - - return 0; - } - } - } - - - if (resultList != NULL) { - freeaddrinfo(resultList); - } - - return enet_address_set_host_ip(address, name); - } /* enet_address_set_host */ - - int enet_address_get_host_ip(const ENetAddress *address, char *name, size_t nameLength) { - if (inet_ntop(AF_INET6, &address->host, name, nameLength) == NULL) { - return -1; - } - - return 0; - } - - int enet_address_get_host(const ENetAddress *address, char *name, size_t nameLength) { - struct sockaddr_in6 sin; - int err; - - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16 (address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - err = getnameinfo((struct sockaddr *) &sin, sizeof(sin), name, nameLength, NULL, 0, NI_NAMEREQD); - if (!err) { - if (name != NULL && nameLength > 0 && !memchr(name, '\0', nameLength)) { - return -1; - } - return 0; - } - if (err != EAI_NONAME) { - return -1; - } - - return enet_address_get_host_ip(address, name, nameLength); - } /* enet_address_get_host */ - - int enet_socket_bind(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - memset(&sin, 0, sizeof(struct sockaddr_in6)); - sin.sin6_family = AF_INET6; - - if (address != NULL) { - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - } else { - sin.sin6_port = 0; - sin.sin6_addr = ENET_HOST_ANY; - sin.sin6_scope_id = 0; - } - - return bind(socket, (struct sockaddr *)&sin, sizeof(struct sockaddr_in6)); - } - - int enet_socket_get_address(ENetSocket socket, ENetAddress *address) { - struct sockaddr_in6 sin; - socklen_t sinLength = sizeof(struct sockaddr_in6); - - if (getsockname(socket, (struct sockaddr *) &sin, &sinLength) == -1) { - return -1; - } - - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - - return 0; - } - - int enet_socket_listen(ENetSocket socket, int backlog) { - return listen(socket, backlog < 0 ? SOMAXCONN : backlog); - } - - ENetSocket enet_socket_create(ENetSocketType type) { - return socket(PF_INET6, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0); - } - - int enet_socket_set_option(ENetSocket socket, ENetSocketOption option, int value) { - int result = -1; - - switch (option) { - case ENET_SOCKOPT_NONBLOCK: - result = fcntl(socket, F_SETFL, (value ? O_NONBLOCK : 0) | (fcntl(socket, F_GETFL) & ~O_NONBLOCK)); - break; - - case ENET_SOCKOPT_BROADCAST: - result = setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_REUSEADDR: - result = setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVBUF: - result = setsockopt(socket, SOL_SOCKET, SO_RCVBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_SNDBUF: - result = setsockopt(socket, SOL_SOCKET, SO_SNDBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVTIMEO: { - struct timeval timeVal; - timeVal.tv_sec = value / 1000; - timeVal.tv_usec = (value % 1000) * 1000; - result = setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeVal, sizeof(struct timeval)); - break; - } - - case ENET_SOCKOPT_SNDTIMEO: { - struct timeval timeVal; - timeVal.tv_sec = value / 1000; - timeVal.tv_usec = (value % 1000) * 1000; - result = setsockopt(socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeVal, sizeof(struct timeval)); - break; - } - - case ENET_SOCKOPT_NODELAY: - result = setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_IPV6_V6ONLY: - result = setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&value, sizeof(int)); - break; - - default: - break; - } - return result == -1 ? -1 : 0; - } /* enet_socket_set_option */ - - int enet_socket_get_option(ENetSocket socket, ENetSocketOption option, int *value) { - int result = -1; - socklen_t len; - - switch (option) { - case ENET_SOCKOPT_ERROR: - len = sizeof(int); - result = getsockopt(socket, SOL_SOCKET, SO_ERROR, value, &len); - break; - - default: - break; - } - return result == -1 ? -1 : 0; - } - - int enet_socket_connect(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - int result; - - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - result = connect(socket, (struct sockaddr *)&sin, sizeof(struct sockaddr_in6)); - if (result == -1 && errno == EINPROGRESS) { - return 0; - } - - return result; - } - - ENetSocket enet_socket_accept(ENetSocket socket, ENetAddress *address) { - int result; - struct sockaddr_in6 sin; - socklen_t sinLength = sizeof(struct sockaddr_in6); - - result = accept(socket,address != NULL ? (struct sockaddr *) &sin : NULL, address != NULL ? &sinLength : NULL); - - if (result == -1) { - return ENET_SOCKET_NULL; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16 (sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return result; - } - - int enet_socket_shutdown(ENetSocket socket, ENetSocketShutdown how) { - return shutdown(socket, (int) how); - } - - void enet_socket_destroy(ENetSocket socket) { - if (socket != -1) { - close(socket); - } - } - - int enet_socket_send(ENetSocket socket, const ENetAddress *address, const ENetBuffer *buffers, size_t bufferCount) { - struct msghdr msgHdr; - struct sockaddr_in6 sin; - int sentLength; - - memset(&msgHdr, 0, sizeof(struct msghdr)); - - if (address != NULL) { - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - msgHdr.msg_name = &sin; - msgHdr.msg_namelen = sizeof(struct sockaddr_in6); - } - - msgHdr.msg_iov = (struct iovec *) buffers; - msgHdr.msg_iovlen = bufferCount; - - sentLength = sendmsg(socket, &msgHdr, MSG_NOSIGNAL); - - if (sentLength == -1) { - if (errno == EWOULDBLOCK) { - return 0; - } - - return -1; - } - - return sentLength; - } /* enet_socket_send */ - - int enet_socket_receive(ENetSocket socket, ENetAddress *address, ENetBuffer *buffers, size_t bufferCount) { - struct msghdr msgHdr; - struct sockaddr_in6 sin; - int recvLength; - - memset(&msgHdr, 0, sizeof(struct msghdr)); - - if (address != NULL) { - msgHdr.msg_name = &sin; - msgHdr.msg_namelen = sizeof(struct sockaddr_in6); - } - - msgHdr.msg_iov = (struct iovec *) buffers; - msgHdr.msg_iovlen = bufferCount; - - recvLength = recvmsg(socket, &msgHdr, MSG_NOSIGNAL); - - if (recvLength == -1) { - if (errno == EWOULDBLOCK) { - return 0; - } - - return -1; - } - - if (msgHdr.msg_flags & MSG_TRUNC) { - return -1; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return recvLength; - } /* enet_socket_receive */ - - int enet_socketset_select(ENetSocket maxSocket, ENetSocketSet *readSet, ENetSocketSet *writeSet, enet_uint32 timeout) { - struct timeval timeVal; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - return select(maxSocket + 1, readSet, writeSet, NULL, &timeVal); - } - - int enet_socket_wait(ENetSocket socket, enet_uint32 *condition, enet_uint64 timeout) { - struct pollfd pollSocket; - int pollCount; - - pollSocket.fd = socket; - pollSocket.events = 0; - - if (*condition & ENET_SOCKET_WAIT_SEND) { - pollSocket.events |= POLLOUT; - } - - if (*condition & ENET_SOCKET_WAIT_RECEIVE) { - pollSocket.events |= POLLIN; - } - - pollCount = poll(&pollSocket, 1, timeout); - - if (pollCount < 0) { - if (errno == EINTR && *condition & ENET_SOCKET_WAIT_INTERRUPT) { - *condition = ENET_SOCKET_WAIT_INTERRUPT; - - return 0; - } - - return -1; - } - - *condition = ENET_SOCKET_WAIT_NONE; - - if (pollCount == 0) { - return 0; - } - - if (pollSocket.revents & POLLOUT) { - *condition |= ENET_SOCKET_WAIT_SEND; - } - - if (pollSocket.revents & POLLIN) { - *condition |= ENET_SOCKET_WAIT_RECEIVE; - } - - return 0; - } /* enet_socket_wait */ - - #endif // !_WIN32 - - -// =======================================================================// -// ! -// ! Platform Specific (Win) -// ! -// =======================================================================// - - #ifdef _WIN32 - - #ifdef __MINGW32__ - // inet_ntop/inet_pton for MinGW from http://mingw-users.1079350.n2.nabble.com/IPv6-getaddrinfo-amp-inet-ntop-td5891996.html - const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt) { - if (af == AF_INET) { - struct sockaddr_in in; - memset(&in, 0, sizeof(in)); - in.sin_family = AF_INET; - memcpy(&in.sin_addr, src, sizeof(struct in_addr)); - getnameinfo((struct sockaddr *)&in, sizeof(struct sockaddr_in), dst, cnt, NULL, 0, NI_NUMERICHOST); - return dst; - } - else if (af == AF_INET6) { - struct sockaddr_in6 in; - memset(&in, 0, sizeof(in)); - in.sin6_family = AF_INET6; - memcpy(&in.sin6_addr, src, sizeof(struct in_addr6)); - getnameinfo((struct sockaddr *)&in, sizeof(struct sockaddr_in6), dst, cnt, NULL, 0, NI_NUMERICHOST); - return dst; - } - - return NULL; - } - - #define NS_INADDRSZ 4 - #define NS_IN6ADDRSZ 16 - #define NS_INT16SZ 2 - - int inet_pton4(const char *src, char *dst) { - uint8_t tmp[NS_INADDRSZ], *tp; - - int saw_digit = 0; - int octets = 0; - *(tp = tmp) = 0; - - int ch; - while ((ch = *src++) != '\0') - { - if (ch >= '0' && ch <= '9') - { - uint32_t n = *tp * 10 + (ch - '0'); - - if (saw_digit && *tp == 0) - return 0; - - if (n > 255) - return 0; - - *tp = n; - if (!saw_digit) - { - if (++octets > 4) - return 0; - saw_digit = 1; - } - } - else if (ch == '.' && saw_digit) - { - if (octets == 4) - return 0; - *++tp = 0; - saw_digit = 0; - } - else - return 0; - } - if (octets < 4) - return 0; - - memcpy(dst, tmp, NS_INADDRSZ); - - return 1; - } - - int inet_pton6(const char *src, char *dst) { - static const char xdigits[] = "0123456789abcdef"; - uint8_t tmp[NS_IN6ADDRSZ]; - - uint8_t *tp = (uint8_t*) memset(tmp, '\0', NS_IN6ADDRSZ); - uint8_t *endp = tp + NS_IN6ADDRSZ; - uint8_t *colonp = NULL; - - /* Leading :: requires some special handling. */ - if (*src == ':') - { - if (*++src != ':') - return 0; - } - - const char *curtok = src; - int saw_xdigit = 0; - uint32_t val = 0; - int ch; - while ((ch = tolower(*src++)) != '\0') - { - const char *pch = strchr(xdigits, ch); - if (pch != NULL) - { - val <<= 4; - val |= (pch - xdigits); - if (val > 0xffff) - return 0; - saw_xdigit = 1; - continue; - } - if (ch == ':') - { - curtok = src; - if (!saw_xdigit) - { - if (colonp) - return 0; - colonp = tp; - continue; - } - else if (*src == '\0') - { - return 0; - } - if (tp + NS_INT16SZ > endp) - return 0; - *tp++ = (uint8_t) (val >> 8) & 0xff; - *tp++ = (uint8_t) val & 0xff; - saw_xdigit = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && - inet_pton4(curtok, (char*) tp) > 0) - { - tp += NS_INADDRSZ; - saw_xdigit = 0; - break; /* '\0' was seen by inet_pton4(). */ - } - return 0; - } - if (saw_xdigit) - { - if (tp + NS_INT16SZ > endp) - return 0; - *tp++ = (uint8_t) (val >> 8) & 0xff; - *tp++ = (uint8_t) val & 0xff; - } - if (colonp != NULL) - { - /* - * Since some memmove()'s erroneously fail to handle - * overlapping regions, we'll do the shift by hand. - */ - const int n = tp - colonp; - - if (tp == endp) - return 0; - - for (int i = 1; i <= n; i++) - { - endp[-i] = colonp[n - i]; - colonp[n - i] = 0; - } - tp = endp; - } - if (tp != endp) - return 0; - - memcpy(dst, tmp, NS_IN6ADDRSZ); - - return 1; - } - - - int inet_pton(int af, const char *src, struct in6_addr *dst) { - switch (af) - { - case AF_INET: - return inet_pton4(src, (char *)dst); - case AF_INET6: - return inet_pton6(src, (char *)dst); - default: - return -1; - } - } - #endif // __MINGW__ - - int enet_initialize(void) { - WORD versionRequested = MAKEWORD(1, 1); - WSADATA wsaData; - - if (WSAStartup(versionRequested, &wsaData)) { - return -1; - } - - if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { - WSACleanup(); - return -1; - } - - timeBeginPeriod(1); - return 0; - } - - void enet_deinitialize(void) { - timeEndPeriod(1); - WSACleanup(); - } - - enet_uint64 enet_host_random_seed(void) { - return (enet_uint64) timeGetTime(); - } - - int enet_address_set_host_ip(ENetAddress *address, const char *name) { - enet_uint8 vals[4] = { 0, 0, 0, 0 }; - int i; - - for (i = 0; i < 4; ++i) { - const char *next = name + 1; - if (*name != '0') { - long val = strtol(name, (char **) &next, 10); - if (val < 0 || val > 255 || next == name || next - name > 3) { - return -1; - } - vals[i] = (enet_uint8) val; - } - - if (*next != (i < 3 ? '.' : '\0')) { - return -1; - } - name = next + 1; - } - - memcpy(&address->host, vals, sizeof(enet_uint32)); - return 0; - } - - int enet_address_set_host(ENetAddress *address, const char *name) { - struct hostent *hostEntry = NULL; - hostEntry = gethostbyname(name); - - if (hostEntry == NULL || hostEntry->h_addrtype != AF_INET) { - if (!inet_pton(AF_INET6, name, &address->host)) { - return -1; - } - - return 0; - } - - ((enet_uint32 *)&address->host.s6_addr)[0] = 0; - ((enet_uint32 *)&address->host.s6_addr)[1] = 0; - ((enet_uint32 *)&address->host.s6_addr)[2] = htonl(0xffff); - ((enet_uint32 *)&address->host.s6_addr)[3] = *(enet_uint32 *)hostEntry->h_addr_list[0]; - - return 0; - } - - int enet_address_get_host_ip(const ENetAddress *address, char *name, size_t nameLength) { - if (inet_ntop(AF_INET6, (PVOID)&address->host, name, nameLength) == NULL) { - return -1; - } - - return 0; - } - - int enet_address_get_host(const ENetAddress *address, char *name, size_t nameLength) { - struct in6_addr in; - struct hostent *hostEntry = NULL; - - in = address->host; - hostEntry = gethostbyaddr((char *)&in, sizeof(struct in6_addr), AF_INET6); - - if (hostEntry == NULL) { - return enet_address_get_host_ip(address, name, nameLength); - } else { - size_t hostLen = strlen(hostEntry->h_name); - if (hostLen >= nameLength) { - return -1; - } - memcpy(name, hostEntry->h_name, hostLen + 1); - } - - return 0; - } - - int enet_socket_bind(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - memset(&sin, 0, sizeof(struct sockaddr_in6)); - sin.sin6_family = AF_INET6; - - if (address != NULL) { - sin.sin6_port = ENET_HOST_TO_NET_16 (address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - } else { - sin.sin6_port = 0; - sin.sin6_addr = in6addr_any; - sin.sin6_scope_id = 0; - } - - return bind(socket, (struct sockaddr *) &sin, sizeof(struct sockaddr_in6)) == SOCKET_ERROR ? -1 : 0; - } - - int enet_socket_get_address(ENetSocket socket, ENetAddress *address) { - struct sockaddr_in6 sin; - int sinLength = sizeof(struct sockaddr_in6); - - if (getsockname(socket, (struct sockaddr *) &sin, &sinLength) == -1) { - return -1; - } - - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - - return 0; - } - - int enet_socket_listen(ENetSocket socket, int backlog) { - return listen(socket, backlog < 0 ? SOMAXCONN : backlog) == SOCKET_ERROR ? -1 : 0; - } - - ENetSocket enet_socket_create(ENetSocketType type) { - return socket(PF_INET6, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0); - } - - int enet_socket_set_option(ENetSocket socket, ENetSocketOption option, int value) { - int result = SOCKET_ERROR; - - switch (option) { - case ENET_SOCKOPT_NONBLOCK: { - u_long nonBlocking = (u_long) value; - result = ioctlsocket(socket, FIONBIO, &nonBlocking); - break; - } - - case ENET_SOCKOPT_BROADCAST: - result = setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_REUSEADDR: - result = setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVBUF: - result = setsockopt(socket, SOL_SOCKET, SO_RCVBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_SNDBUF: - result = setsockopt(socket, SOL_SOCKET, SO_SNDBUF, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_RCVTIMEO: - result = setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_SNDTIMEO: - result = setsockopt(socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_NODELAY: - result = setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (char *)&value, sizeof(int)); - break; - - case ENET_SOCKOPT_IPV6_V6ONLY: - result = setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&value, sizeof(int)); - break; - - default: - break; - } - return result == SOCKET_ERROR ? -1 : 0; - } /* enet_socket_set_option */ - - int enet_socket_get_option(ENetSocket socket, ENetSocketOption option, int *value) { - int result = SOCKET_ERROR, len; - - switch (option) { - case ENET_SOCKOPT_ERROR: - len = sizeof(int); - result = getsockopt(socket, SOL_SOCKET, SO_ERROR, (char *)value, &len); - break; - - default: - break; - } - return result == SOCKET_ERROR ? -1 : 0; - } - - int enet_socket_connect(ENetSocket socket, const ENetAddress *address) { - struct sockaddr_in6 sin; - int result; - - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - - result = connect(socket, (struct sockaddr *) &sin, sizeof(struct sockaddr_in6)); - if (result == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) { - return -1; - } - - return 0; - } - - ENetSocket enet_socket_accept(ENetSocket socket, ENetAddress *address) { - SOCKET result; - struct sockaddr_in6 sin; - int sinLength = sizeof(struct sockaddr_in6); - - result = accept(socket, address != NULL ? (struct sockaddr *)&sin : NULL, address != NULL ? &sinLength : NULL); - - if (result == INVALID_SOCKET) { - return ENET_SOCKET_NULL; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return result; - } - - int enet_socket_shutdown(ENetSocket socket, ENetSocketShutdown how) { - return shutdown(socket, (int) how) == SOCKET_ERROR ? -1 : 0; - } - - void enet_socket_destroy(ENetSocket socket) { - if (socket != INVALID_SOCKET) { - closesocket(socket); - } - } - - int enet_socket_send(ENetSocket socket, const ENetAddress *address, const ENetBuffer *buffers, size_t bufferCount) { - struct sockaddr_in6 sin; - DWORD sentLength; - - if (address != NULL) { - memset(&sin, 0, sizeof(struct sockaddr_in6)); - - sin.sin6_family = AF_INET6; - sin.sin6_port = ENET_HOST_TO_NET_16(address->port); - sin.sin6_addr = address->host; - sin.sin6_scope_id = address->sin6_scope_id; - } - - if (WSASendTo(socket, - (LPWSABUF) buffers, - (DWORD) bufferCount, - &sentLength, - 0, - address != NULL ? (struct sockaddr *) &sin : NULL, - address != NULL ? sizeof(struct sockaddr_in6) : 0, - NULL, - NULL) == SOCKET_ERROR - ) { - return (WSAGetLastError() == WSAEWOULDBLOCK) ? 0 : -1; - } - - return (int) sentLength; - } - - int enet_socket_receive(ENetSocket socket, ENetAddress *address, ENetBuffer *buffers, size_t bufferCount) { - INT sinLength = sizeof(struct sockaddr_in6); - DWORD flags = 0, recvLength; - struct sockaddr_in6 sin; - - if (WSARecvFrom(socket, - (LPWSABUF) buffers, - (DWORD) bufferCount, - &recvLength, - &flags, - address != NULL ? (struct sockaddr *) &sin : NULL, - address != NULL ? &sinLength : NULL, - NULL, - NULL) == SOCKET_ERROR - ) { - switch (WSAGetLastError()) { - case WSAEWOULDBLOCK: - case WSAECONNRESET: - return 0; - } - - return -1; - } - - if (flags & MSG_PARTIAL) { - return -1; - } - - if (address != NULL) { - address->host = sin.sin6_addr; - address->port = ENET_NET_TO_HOST_16(sin.sin6_port); - address->sin6_scope_id = sin.sin6_scope_id; - } - - return (int) recvLength; - } /* enet_socket_receive */ - - int enet_socketset_select(ENetSocket maxSocket, ENetSocketSet *readSet, ENetSocketSet *writeSet, enet_uint32 timeout) { - struct timeval timeVal; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - return select(maxSocket + 1, readSet, writeSet, NULL, &timeVal); - } - - int enet_socket_wait(ENetSocket socket, enet_uint32 *condition, enet_uint64 timeout) { - fd_set readSet, writeSet; - struct timeval timeVal; - int selectCount; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - FD_ZERO(&readSet); - FD_ZERO(&writeSet); - - if (*condition & ENET_SOCKET_WAIT_SEND) { - FD_SET(socket, &writeSet); - } - - if (*condition & ENET_SOCKET_WAIT_RECEIVE) { - FD_SET(socket, &readSet); - } - - selectCount = select(socket + 1, &readSet, &writeSet, NULL, &timeVal); - - if (selectCount < 0) { - return -1; - } - - *condition = ENET_SOCKET_WAIT_NONE; - - if (selectCount == 0) { - return 0; - } - - if (FD_ISSET(socket, &writeSet)) { - *condition |= ENET_SOCKET_WAIT_SEND; - } - - if (FD_ISSET(socket, &readSet)) { - *condition |= ENET_SOCKET_WAIT_RECEIVE; - } - - return 0; - } /* enet_socket_wait */ - - #endif // _WIN32 - - -#ifdef __cplusplus -} -#endif - -#endif // ENET_IMPLEMENTATION -#endif // ENET_INCLUDE_H diff --git a/source/thirdparty/src/enet.cpp b/source/thirdparty/src/enet.cpp deleted file mode 100644 index d3bac0a81..000000000 --- a/source/thirdparty/src/enet.cpp +++ /dev/null @@ -1,18 +0,0 @@ -#define ENET_IMPLEMENTATION -#include "enet.h" -#include "printf.h" - -bool gHaveNetworking; - -void ShutdownENet() -{ - if (gHaveNetworking) enet_deinitialize(); -} - -void InitENet() -{ - gHaveNetworking = !enet_initialize(); - if (!gHaveNetworking) - Printf("An error occurred while initializing ENet.\n"); -} -