quakeforge/nq/source/host.c
Bill Currie 8ff2c5a747 [util] Support utf-8 strings in Sys_Printf
By default. Conversion of quake strings needs to be requested (which is
done by nq and qw clients and servers, as well as qfprogs via an
option). I got tired of seeing mangled source code in the disassembly.
2023-08-23 21:40:50 +09:00

985 lines
21 KiB
C

/*
host.c
host init
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "QF/cbuf.h"
#include "QF/dstring.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/dstring.h"
#include "QF/gib.h"
#include "QF/idparse.h"
#include "QF/qargs.h"
#include "QF/plugin/console.h"
#include "buildnum.h"
#include "nq/include/client.h"
#include "nq/include/host.h"
#include "nq/include/server.h"
/*
A server can always be started, even if the system started out as a client
to a remote system.
A client can NOT be started if the system started as a dedicated server.
Memory is cleared/released when a server or client begins, not when they end.
*/
SERVER_PLUGIN_PROTOS
static plugin_list_t server_plugin_list[] = {
SERVER_PLUGIN_LIST
};
bool host_initialized; // true if into command execution
quakeparms_t host_parms;
cbuf_t *host_cbuf;
double host_frametime;
double host_time;
double realtime; // without any filtering or bounding
double oldrealtime; // last frame run
double con_frametime;
double con_realtime;
double oldcon_realtime;
int host_framecount;
size_t host_hunklevel;
int host_in_game;
size_t minimum_memory;
client_t *host_client; // current client
jmp_buf host_abortserver;
float host_mem_size;
static cvar_t host_mem_size_cvar = {
.name = "host_mem_size",
.description =
"Amount of memory (in MB) to allocate for the "
PACKAGE_NAME
" heap",
.default_value = "40",
.flags = CVAR_ROM,
.value = { .type = &cexpr_float, .value = &host_mem_size },
};
float host_framerate;
static cvar_t host_framerate_cvar = {
.name = "host_framerate",
.description =
"set for slow motion",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_float, .value = &host_framerate },
};
int host_speeds;
static cvar_t host_speeds_cvar = {
.name = "host_speeds",
.description =
"set for running times",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &host_speeds },
};
int max_edicts;
static cvar_t max_edicts_cvar = {
.name = "max_edicts",
.description =
"maximum server edicts",
.default_value = "1024",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &max_edicts },
};
float sys_ticrate;
static cvar_t sys_ticrate_cvar = {
.name = "sys_ticrate",
.description =
"None",
.default_value = "0.05",
.flags = CVAR_NONE,
.value = { .type = &cexpr_float, .value = &sys_ticrate },
};
int serverprofile;
static cvar_t serverprofile_cvar = {
.name = "serverprofile",
.description =
"None",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &serverprofile },
};
int cl_quakerc;
static cvar_t cl_quakerc_cvar = {
.name = "cl_quakerc",
.description =
"exec quake.rc on startup",
.default_value = "1",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &cl_quakerc },
};
float fraglimit;
static cvar_t fraglimit_cvar = {
.name = "fraglimit",
.description =
"None",
.default_value = "0",
.flags = CVAR_SERVERINFO,
.value = { .type = &cexpr_float, .value = &fraglimit },
};
int timelimit;
static cvar_t timelimit_cvar = {
.name = "timelimit",
.description =
"None",
.default_value = "0",
.flags = CVAR_SERVERINFO,
.value = { .type = &cexpr_int, .value = &timelimit },
};
int teamplay;
static cvar_t teamplay_cvar = {
.name = "teamplay",
.description =
"None",
.default_value = "0",
.flags = CVAR_SERVERINFO,
.value = { .type = &cexpr_int, .value = &teamplay },
};
float noexit;
static cvar_t noexit_cvar = {
.name = "noexit",
.description =
"None",
.default_value = "0",
.flags = CVAR_SERVERINFO,
.value = { .type = &cexpr_float, .value = &noexit },
};
float samelevel;
static cvar_t samelevel_cvar = {
.name = "samelevel",
.description =
"None",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_float, .value = &samelevel },
};
int skill;
static cvar_t skill_cvar = {
.name = "skill",
.description =
"0 - 3",
.default_value = "1",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &skill },
};
int coop;
static cvar_t coop_cvar = {
.name = "coop",
.description =
"0 or 1",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &coop },
};
int deathmatch;
static cvar_t deathmatch_cvar = {
.name = "deathmatch",
.description =
"0, 1, or 2",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &deathmatch },
};
int pausable;
static cvar_t pausable_cvar = {
.name = "pausable",
.description =
"None",
.default_value = "1",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &pausable },
};
float temp1;
static cvar_t temp1_cvar = {
.name = "temp1",
.description =
"None",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_float, .value = &temp1 },
};
int cl_usleep;
static cvar_t cl_usleep_cvar = {
.name = "cl_usleep",
.description =
"Turn this on to save cpu when fps limited. May affect frame rate "
"adversely depending on local machine/os conditions",
.default_value = "1",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_int, .value = &cl_usleep },
};
void
Host_EndGame (const char *message, ...)
{
static dstring_t *str;
va_list argptr;
if (!str)
str = dstring_new ();
va_start (argptr, message);
dvsprintf (str, message, argptr);
va_end (argptr);
Sys_MaskPrintf (SYS_dev, "Host_EndGame: %s\n", str->str);
if (sv.active)
Host_ShutdownServer (false);
if (net_is_dedicated)
Sys_Error ("Host_EndGame: %s", str->str); // dedicated servers exit
if (cls.demonum != -1)
CL_NextDemo ();
else
CL_Disconnect ();
longjmp (host_abortserver, 1);
}
/*
Host_Error
This shuts down both the client and server
*/
void
Host_Error (const char *error, ...)
{
static dstring_t *str;
static bool inerror = false;
va_list argptr;
if (inerror)
Sys_Error ("Host_Error: recursively entered");
if (!str)
str = dstring_new ();
inerror = true;
cl.viewstate.loading = false;
va_start (argptr, error);
dvsprintf (str, error, argptr);
va_end (argptr);
if (sv.active)
Host_ShutdownServer (false);
if (net_is_dedicated)
Sys_Error ("Host_Error: %s", str->str); // dedicated servers exit
Sys_Printf ("Host_Error: %s\n", str->str);
CL_Disconnect ();
cls.demonum = -1;
inerror = false;
longjmp (host_abortserver, 1);
}
static void
Host_FindMaxClients (void)
{
int i;
svs.maxclients = 1;
i = COM_CheckParm ("-dedicated");
if (i) {
if (i != (com_argc - 1)) {
svs.maxclients = atoi (com_argv[i + 1]);
} else
svs.maxclients = 8;
}
cls.state = ca_disconnected;
net_is_dedicated = i;
i = COM_CheckParm ("-listen");
if (i) {
if (net_is_dedicated)
Sys_Error ("Only one of -dedicated or -listen can be specified");
if (i != (com_argc - 1))
svs.maxclients = atoi (com_argv[i + 1]);
else
svs.maxclients = 8;
}
if (svs.maxclients < 1)
svs.maxclients = 8;
else if (svs.maxclients > MAX_SCOREBOARD)
svs.maxclients = MAX_SCOREBOARD;
svs.maxclientslimit = svs.maxclients;
if (svs.maxclientslimit < 4)
svs.maxclientslimit = 4;
svs.clients =
Hunk_AllocName (0, svs.maxclientslimit * sizeof (client_t), "clients");
if (svs.maxclients > 1)
deathmatch = 1.0;
else
deathmatch = 0.0;
}
static void
Host_InitLocal (void)
{
Host_InitCommands ();
Cvar_Register (&host_framerate_cvar, 0, 0);
Cvar_Register (&host_speeds_cvar, 0, 0);
Cvar_Register (&max_edicts_cvar, 0, 0);
Cvar_Register (&sys_ticrate_cvar, 0, 0);
Cvar_Register (&serverprofile_cvar, 0, 0);
Cvar_Register (&cl_quakerc_cvar, 0, 0);
Cvar_Register (&fraglimit_cvar, Cvar_Info, &fraglimit);
Cvar_Register (&timelimit_cvar, Cvar_Info, &timelimit);
Cvar_Register (&teamplay_cvar, Cvar_Info, &teamplay);
Cvar_Register (&samelevel_cvar, 0, 0);
Cvar_Register (&noexit_cvar, Cvar_Info, &noexit);
Cvar_Register (&skill_cvar, 0, 0);
Cvar_Register (&deathmatch_cvar, 0, 0);
Cvar_Register (&coop_cvar, 0, 0);
Cvar_Register (&pausable_cvar, 0, 0);
Cvar_Register (&temp1_cvar, 0, 0);
Cvar_Register (&cl_usleep_cvar, 0, 0);
Host_FindMaxClients ();
host_time = 1.0; // so a think at time 0 won't get called
}
/*
SV_ClientPrintf
Sends text across to be displayed
*/
void
SV_ClientPrintf (const char *fmt, ...)
{
static dstring_t *str;
va_list argptr;
if (!str)
str = dstring_new ();
va_start (argptr, fmt);
dvsprintf (str, fmt, argptr);
va_end (argptr);
MSG_WriteByte (&host_client->message, svc_print);
MSG_WriteString (&host_client->message, str->str);
}
/*
SV_BroadcastPrintf
Sends text to all active clients
*/
void
SV_BroadcastPrintf (const char *fmt, ...)
{
static dstring_t *str;
va_list argptr;
if (!str)
str = dstring_new ();
va_start (argptr, fmt);
dvsprintf (str, fmt, argptr);
va_end (argptr);
for (unsigned i = 0; i < svs.maxclients; i++)
if (svs.clients[i].active && svs.clients[i].spawned) {
MSG_WriteByte (&svs.clients[i].message, svc_print);
MSG_WriteString (&svs.clients[i].message, str->str);
}
}
/*
Host_ClientCommands
Send text over to the client to be executed
*/
void
Host_ClientCommands (const char *fmt, ...)
{
static dstring_t *str;
va_list argptr;
if (!str)
str = dstring_new ();
va_start (argptr, fmt);
dvsprintf (str, fmt, argptr);
va_end (argptr);
MSG_WriteByte (&host_client->message, svc_stufftext);
MSG_WriteString (&host_client->message, str->str);
}
/*
SV_DropClient
Called when the player is getting totally kicked off the host
if (crash = true), don't bother sending signofs
*/
void
SV_DropClient (bool crash)
{
client_t *client;
unsigned i;
pr_uint_t saveSelf;
if (!crash) {
// send any final messages (don't check for errors)
if (NET_CanSendMessage (host_client->netconnection)) {
MSG_WriteByte (&host_client->message, svc_disconnect);
NET_SendMessage (host_client->netconnection,
&host_client->message);
}
if (host_client->edict && host_client->spawned) {
// call the prog function for removing a client
// this will set the body to a dead frame, among other things
saveSelf = *sv_globals.self;
*sv_globals.self = EDICT_TO_PROG (&sv_pr_state, host_client->edict);
PR_ExecuteProgram (&sv_pr_state, sv_funcs.ClientDisconnect);
*sv_globals.self = saveSelf;
}
Sys_Printf ("Client %s removed\n", host_client->name);
}
// break the net connection
Sys_MaskPrintf (SYS_net, "dropping client\n");
NET_Close (host_client->netconnection);
host_client->netconnection = NULL;
// free the client (the body stays around)
host_client->active = false;
host_client->name[0] = 0;
host_client->old_frags = -999999;
net_activeconnections--;
// send notification to all clients
for (i = 0, client = svs.clients; i < svs.maxclients;
i++, client++) {
if (!client->active)
continue;
MSG_WriteByte (&client->message, svc_updatename);
MSG_WriteByte (&client->message, host_client - svs.clients);
MSG_WriteString (&client->message, "");
MSG_WriteByte (&client->message, svc_updatefrags);
MSG_WriteByte (&client->message, host_client - svs.clients);
MSG_WriteShort (&client->message, 0);
MSG_WriteByte (&client->message, svc_updatecolors);
MSG_WriteByte (&client->message, host_client - svs.clients);
MSG_WriteByte (&client->message, 0);
}
}
/*
Host_ShutdownServer
This happens only at the end of a game, not between levels
*/
void
Host_ShutdownServer (bool crash)
{
byte message[4];
double start;
unsigned count, i;
sizebuf_t buf;
if (!sv.active)
return;
sv.active = false;
// stop all client sounds immediately
if (cls.state >= ca_connected)
CL_Disconnect ();
// flush any pending messages - like the score!!!
start = Sys_DoubleTime ();
do {
count = 0;
for (i = 0, host_client = svs.clients; i < svs.maxclients;
i++, host_client++) {
if (host_client->active && host_client->message.cursize) {
if (NET_CanSendMessage (host_client->netconnection)) {
NET_SendMessage (host_client->netconnection,
&host_client->message);
SZ_Clear (&host_client->message);
} else {
NET_GetMessage (host_client->netconnection);
count++;
}
}
}
if ((Sys_DoubleTime () - start) > 3.0)
break;
}
while (count);
// make sure all the clients know we're disconnecting
buf.data = message;
buf.maxsize = 4;
buf.cursize = 0;
MSG_WriteByte (&buf, svc_disconnect);
count = NET_SendToAll (&buf, 5.0);
if (count)
Sys_Printf
("Host_ShutdownServer: NET_SendToAll failed for %u clients\n",
count);
for (i = 0, host_client = svs.clients; i < svs.maxclients;
i++, host_client++)
if (host_client->active)
SV_DropClient (crash);
// clear structures
memset (&sv, 0, sizeof (sv));
memset (svs.clients, 0, svs.maxclientslimit * sizeof (client_t));
}
/*
Host_ClearMemory
This clears all the memory used by both the client and server, but does
not reinitialize anything.
*/
void
Host_ClearMemory (void)
{
Sys_MaskPrintf (SYS_dev, "Clearing memory\n");
Mod_ClearAll ();
if (host_hunklevel)
Hunk_FreeToLowMark (0, host_hunklevel);
}
static struct LISTENER_SET_TYPE(void) host_server_spawn = LISTENER_SET_STATIC_INIT(4);
void
Host_SpawnServer (void)
{
LISTENER_INVOKE (&host_server_spawn, NULL);
Host_ClearMemory ();
}
void
Host_OnServerSpawn (void (*onSpawn) (void))
{
LISTENER_ADD (&host_server_spawn,
(void(*)(void *, const void*)) onSpawn, 0);
}
/*
Host_FilterTime
Returns false if the time is too short to run a frame
*/
static float
Host_FilterTime (float time)
{
float timedifference;
float timescale = 1.0;
con_realtime += time;
if (cls.demoplayback) {
timescale = max (0, demo_speed);
time *= timescale;
}
realtime += time;
//FIXME not having the framerate cap is nice, but it breaks net play
timedifference = (timescale / 72.0) - (realtime - oldrealtime);
if (!cls.demoplayback && (timedifference > 0))
return timedifference; // framerate is too high
host_frametime = realtime - oldrealtime;
oldrealtime = realtime;
con_frametime = con_realtime - oldcon_realtime;
oldcon_realtime = con_realtime;
if (host_framerate > 0)
host_frametime = host_framerate;
else // don't allow really long or short frames
host_frametime = bound (0.000, host_frametime, 0.1);
return 0;
}
/*
Host_Frame
Runs all active servers
*/
static void
_Host_Frame (float time)
{
static int first = 1;
float sleeptime;
if (setjmp (host_abortserver))
return; // something bad happened, or the
// server disconnected
rand (); // keep the random time dependent
if (cls.demo_capture)
time = 1.0 / 30; //FIXME fixed 30fps atm
// decide the simulation time
if ((sleeptime = Host_FilterTime (time)) != 0) {
// don't run too fast, or packet will flood outs
#ifdef HAVE_USLEEP
if (cl_usleep && sleeptime > 0.002) // minimum sleep time
usleep ((unsigned long) (sleeptime * 1000000 / 2));
#endif
return;
}
host_time += host_frametime; //FIXME is this needed? vcr stuff
if (first) {
first = 0;
if (isDedicated) {
if (!sv.active)
Cmd_ExecuteString ("map start", src_command);
if (!sv.active)
Sys_Error ("Could not initialize server");
} else {
Con_NewMap ();
}
}
NET_Poll ();
if (!net_is_dedicated) {
// Whether or not the server is active, if this is not a dedicated
// server, then the client always needs to be able to process input
// and send commands to the server before the server runs a frame.
CL_PreFrame ();
}
if (sv.active) {
SV_Frame ();
}
if (!net_is_dedicated) {
CL_Frame ();
}
host_framecount++;
}
void
Host_Frame (float time)
{
double time1, time2;
static double timetotal;
int c;
double m;
static int timecount;
if (!serverprofile) {
_Host_Frame (time);
return;
}
time1 = Sys_DoubleTime ();
_Host_Frame (time);
time2 = Sys_DoubleTime ();
timetotal += time2 - time1;
timecount++;
if (timecount < 1000)
return;
m = timetotal * 1000 / timecount;
timecount = 0;
timetotal = 0;
c = 0;
for (unsigned i = 0; i < svs.maxclients; i++) {
if (svs.clients[i].active)
c++;
}
Sys_Printf ("serverprofile: %2i clients %5.3g msec\n", c, m);
}
#define VCR_SIGNATURE 0x56435231
// "VCR1"
static void
Host_InitVCR (quakeparms_t *parms)
{
char *p;
int i, len, n;
if (COM_CheckParm ("-playback")) {
if (com_argc != 2)
Sys_Error ("No other parameters allowed with -playback");
vcrFile = QFS_Open ("quake.vcr", "rbz");
if (!vcrFile)
Sys_Error ("playback file not found");
Qread (vcrFile, &i, sizeof (int));
if (i != VCR_SIGNATURE)
Sys_Error ("Invalid signature in vcr file");
Qread (vcrFile, &com_argc, sizeof (int));
com_argv = malloc (com_argc * sizeof (char *));
SYS_CHECKMEM (com_argv);
com_argv[0] = parms->argv[0];
for (i = 0; i < com_argc; i++) {
Qread (vcrFile, &len, sizeof (int));
p = malloc (len);
SYS_CHECKMEM (p);
Qread (vcrFile, p, len);
com_argv[i + 1] = p;
}
com_argc++; /* add one for arg[0] */
parms->argc = com_argc;
parms->argv = com_argv;
}
if ((n = COM_CheckParm ("-record")) != 0) {
vcrFile = QFS_Open ("quake.vcr", "wb");
i = VCR_SIGNATURE;
Qwrite (vcrFile, &i, sizeof (int));
i = com_argc - 1;
Qwrite (vcrFile, &i, sizeof (int));
for (i = 1; i < com_argc; i++) {
if (i == n) {
len = 10;
Qwrite (vcrFile, &len, sizeof (int));
Qwrite (vcrFile, "-playback", len);
continue;
}
len = strlen (com_argv[i]) + 1;
Qwrite (vcrFile, &len, sizeof (int));
Qwrite (vcrFile, com_argv[i], len);
}
}
}
static memhunk_t *
Host_Init_Memory (void)
{
int mem_parm = COM_CheckParm ("-mem");
size_t mem_size;
void *mem_base;
if (standard_quake)
minimum_memory = MINIMUM_MEMORY;
else
minimum_memory = MINIMUM_MEMORY_LEVELPAK;
Cvar_Register (&host_mem_size_cvar, 0, 0);
if (mem_parm)
Cvar_Set ("host_mem_size", com_argv[mem_parm + 1]);
if (COM_CheckParm ("-minmemory"))
host_mem_size = minimum_memory / (1024 * 1024.0);
mem_size = ((size_t) host_mem_size * 1024 * 1024);
if (mem_size < minimum_memory)
Sys_Error ("Only %4.1f megs of memory reported, can't execute game",
mem_size / (float) 0x100000);
mem_base = Sys_Alloc (mem_size);
if (!mem_base)
Sys_Error ("Can't allocate %zd", mem_size);
Sys_PageIn (mem_base, mem_size);
memhunk_t *hunk = Memory_Init (mem_base, mem_size);
Sys_Printf ("%4.1f megabyte heap\n", host_mem_size);
return hunk;
}
static void
Host_ExecConfig (cbuf_t *cbuf, int skip_quakerc)
{
// quakeforge.cfg overrides quake.rc as it contains quakeforge-specific
// commands. If it doesn't exist, then this is the first time quakeforge
// has been used in this installation, thus any existing legacy config
// should be used to set up defaults on the assumption that the user has
// things set up to work with another (hopefully compatible) client
if (CL_ReadConfiguration ("quakeforge.cfg")) {
Cmd_Exec_File (cbuf, fs_usercfg, 0);
Cmd_StuffCmds (cbuf);
COM_Check_quakerc ("startdemos", cbuf);
} else {
if (!skip_quakerc) {
Cbuf_InsertText (cbuf, "exec quake.rc\n");
}
Cmd_Exec_File (cbuf, fs_usercfg, 0);
// Reparse the command line for + commands.
// (sets still done, but it doesn't matter)
// (Note, no non-base commands exist yet)
if (skip_quakerc || !COM_Check_quakerc ("stuffcmds", 0)) {
Cmd_StuffCmds (cbuf);
}
}
}
void
Host_Init (void)
{
sys_quake_encoding = true;
Sys_RegisterShutdown (Host_Shutdown, 0);
Sys_Printf ("Host_Init\n");
host_cbuf = Cbuf_New (&id_interp);
cmd_source = src_command;
Sys_Init ();
GIB_Init (true);
COM_ParseConfig (host_cbuf);
memhunk_t *hunk = Host_Init_Memory ();
PI_Init ();
Game_Init (hunk);
if (!isDedicated)
CL_InitCvars ();
if (isDedicated) {
PI_RegisterPlugins (server_plugin_list);
Con_Load ("server");
Con_Init ();
}
Host_InitVCR (&host_parms);
Host_InitLocal ();
NET_Init (host_cbuf);
Mod_Init ();
SV_Init ();
if (!net_is_dedicated)
CL_Init (host_cbuf);
if (con_module) {
con_module->data->console->realtime = &con_realtime;
con_module->data->console->frametime = &con_frametime;
con_module->data->console->quit = Host_Quit_f;
//FIXME need to rethink cbuf connections (they can form a stack)
Cbuf_DeleteStack (con_module->data->console->cbuf);
con_module->data->console->cbuf = host_cbuf;
}
Host_ExecConfig (host_cbuf, isDedicated || !cl_quakerc);
Hunk_AllocName (0, 0, "-HOST_HUNKLEVEL-");
host_hunklevel = Hunk_LowMark (0);
Sys_Printf ("\nVersion %s (build %04d)\n\n", PACKAGE_VERSION,
build_number ());
Sys_Printf ("\x80\x81\x81\x82 %s initialized \x80\x81\x81\x82\n",
PACKAGE_NAME);
host_initialized = true;
}
/*
Host_Shutdown
FIXME: this is a callback from Sys_Quit and Sys_Error. It would be
better to run quit through here before final handoff to the sys code.
*/
void
Host_Shutdown (void *data)
{
static bool isdown = false;
if (isdown) {
printf ("recursive shutdown\n");
return;
}
isdown = true;
}