/* Copyright (C) 1996-1997 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // net.h -- quake's interface to the networking layer #define PORT_ANY -1 typedef enum {NA_INVALID, NA_LOOPBACK, NA_IP, NA_IPV6, NA_IPX, NA_BROADCAST_IP, NA_BROADCAST_IP6, NA_BROADCAST_IPX} netadrtype_t; typedef enum {NS_CLIENT, NS_SERVER} netsrc_t; typedef struct { netadrtype_t type; union { qbyte ip[4]; qbyte ip6[16]; qbyte ipx[10]; } address; unsigned short port; } netadr_t; struct sockaddr_qstorage { short dontusesa_family; unsigned char dontusesa_pad[6]; #if defined(_MSC_VER) || defined(MINGW) __int64 sa_align; #else int sa_align[2]; #endif unsigned char sa_pad2[112]; }; extern netadr_t net_local_sv_ipadr; extern netadr_t net_local_sv_ip6adr; extern netadr_t net_local_sv_ipxadr; extern netadr_t net_local_sv_tcpipadr; extern netadr_t net_local_cl_ipadr; extern netadr_t net_from; // address of who sent the packet extern sizebuf_t net_message; //#define MAX_UDP_PACKET (MAX_MSGLEN*2) // one more than msg + header #define MAX_UDP_PACKET 8192 // one more than msg + header extern qbyte net_message_buffer[MAX_UDP_PACKET]; extern cvar_t hostname; int TCP_OpenStream (netadr_t remoteaddr); //makes things easier void NET_Init (void); void NET_InitClient (void); void NET_InitServer (void); void NET_CloseServer (void); void UDP_CloseSocket (int socket); void NET_Shutdown (void); qboolean NET_GetPacket (netsrc_t socket); void NET_SendPacket (netsrc_t socket, int length, void *data, netadr_t to); qboolean NET_CompareAdr (netadr_t a, netadr_t b); qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b); char *NET_AdrToString (netadr_t a); char *NET_BaseAdrToString (netadr_t a); qboolean NET_StringToSockaddr (char *s, struct sockaddr_qstorage *sadr); qboolean NET_StringToAdr (char *s, netadr_t *a); qboolean NET_IsClientLegal(netadr_t *adr); qboolean NET_IsLoopBackAddress (netadr_t adr); qboolean NET_StringToAdrMasked (char *s, netadr_t *a, netadr_t *amask); char *NET_AdrToStringMasked (netadr_t a, netadr_t amask); void NET_IntegerToMask (netadr_t *a, netadr_t *amask, int bits); qboolean NET_CompareAdrMasked(netadr_t a, netadr_t b, netadr_t mask); //============================================================================ #define OLD_AVG 0.99 // total = oldtotal*OLD_AVG + new*(1-OLD_AVG) #define MAX_LATENT 32 typedef struct { qboolean fatal_error; #ifdef NQPROT qboolean isnqprotocol; #endif float last_received; // for timeouts // the statistics are cleared at each client begin, because // the server connecting process gives a bogus picture of the data float frame_latency; // rolling average float frame_rate; int drop_count; // dropped packets, cleared each level int good_count; // cleared each level netadr_t remote_address; netsrc_t sock; int qport; // bandwidth estimator double cleartime; // if realtime > nc->cleartime, free to go // double rate; // seconds / qbyte // sequencing variables int incoming_unreliable; //dictated by the other end. int incoming_sequence; int incoming_acknowledged; int incoming_reliable_acknowledged; // single bit int incoming_reliable_sequence; // single bit, maintained local int outgoing_unreliable; int outgoing_sequence; int reliable_sequence; // single bit int last_reliable_sequence; // sequence number of last send // reliable staging and holding areas sizebuf_t message; // writing buffer to send to server qbyte message_buf[MAX_OVERALLMSGLEN]; //nq has message truncation. int reliable_length; int reliable_start; qbyte reliable_buf[MAX_OVERALLMSGLEN]; // unacked reliable message // time and size data to calculate bandwidth int outgoing_size[MAX_LATENT]; double outgoing_time[MAX_LATENT]; qboolean compress; //nq servers must recieve truncated packets. int in_fragment_length; char in_fragment_buf[MAX_OVERALLMSGLEN]; int in_fragment_start; } netchan_t; extern int net_drop; // packets dropped before this one void Netchan_Init (void); void Netchan_Transmit (netchan_t *chan, int length, qbyte *data, int rate); void Netchan_OutOfBand (netsrc_t sock, netadr_t adr, int length, qbyte *data); void VARGS Netchan_OutOfBandPrint (netsrc_t sock, netadr_t adr, char *format, ...); void VARGS Netchan_OutOfBandTPrintf (netsrc_t sock, netadr_t adr, int language, translation_t text, ...); qboolean Netchan_Process (netchan_t *chan); void Netchan_Setup (netsrc_t sock, netchan_t *chan, netadr_t adr, int qport); qboolean Netchan_CanPacket (netchan_t *chan, int rate); qboolean Netchan_CanReliable (netchan_t *chan, int rate); #ifdef NQPROT qboolean NQNetChan_Process(netchan_t *chan); #endif #ifdef HUFFNETWORK int Huff_PreferedCompressionCRC (void); void Huff_EncryptPacket(sizebuf_t *msg, int offset); void Huff_DecryptPacket(sizebuf_t *msg, int offset); qboolean Huff_CompressionCRC(int crc); void Huff_CompressPacket(sizebuf_t *msg, int offset); void Huff_DecompressPacket(sizebuf_t *msg, int offset); int Huff_GetByte(qbyte *buffer, int *count); void Huff_EmitByte(int ch, qbyte *buffer, int *count); #endif #ifdef NQPROT //taken from nq's net.h //refer to that for usage info. :) #define NETFLAG_LENGTH_MASK 0x0000ffff #define NETFLAG_DATA 0x00010000 #define NETFLAG_ACK 0x00020000 #define NETFLAG_NAK 0x00040000 #define NETFLAG_EOM 0x00080000 #define NETFLAG_UNRELIABLE 0x00100000 #define NETFLAG_CTL 0x80000000 #define NET_GAMENAME_NQ "QUAKE" #define NET_PROTOCOL_VERSION 3 #define CCREQ_CONNECT 0x01 #define CCREQ_SERVER_INFO 0x02 #define CCREQ_PLAYER_INFO 0x03 #define CCREQ_RULE_INFO 0x04 #define CCREP_ACCEPT 0x81 #define CCREP_REJECT 0x82 #define CCREP_SERVER_INFO 0x83 #define CCREP_PLAYER_INFO 0x84 #define CCREP_RULE_INFO 0x85 //server->client protocol info #define NQ_PROTOCOL_VERSION 15 #define DP5_PROTOCOL_VERSION 3502 #define DP6_PROTOCOL_VERSION 3503 #define DP7_PROTOCOL_VERSION 3504 #endif int UDP_OpenSocket (int port, qboolean bcast); int IPX_OpenSocket (int port, qboolean bcast); int NetadrToSockadr (netadr_t *a, struct sockaddr_qstorage *s); void SockadrToNetadr (struct sockaddr_qstorage *s, netadr_t *a); qboolean NET_Sleep(int msec, qboolean stdinissocket);