2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2002 Mathieu Olivier
4 Copyright (C) 2003 Forest Hale
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #define QWMASTER_PORT 27000
27 #define DPMASTER_PORT 27950
29 // note this defaults on for dedicated servers, off for listen servers
30 cvar_t sv_public = {0, "sv_public", "0", "1: advertises this server on the master server (so that players can find it in the server browser); 0: allow direct queries only; -1: do not respond to direct queries; -2: do not allow anyone to connect"};
31 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
33 static cvar_t sv_masters [] =
35 {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
36 {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
37 {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
38 {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
39 {0, "sv_masterextra1", "ghdigital.com", "default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
40 {0, "sv_masterextra2", "dpmaster.deathmask.net", "default master server 2 (admin: Willis)"}, // admin: Willis
41 {0, "sv_masterextra3", "excalibur.nvg.ntnu.no", "default master server 3 (admin: tChr)"}, // admin: tChr
45 static cvar_t sv_qwmasters [] =
47 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
48 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
49 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
50 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
51 {0, "sv_qwmasterextra1", "192.246.40.37:27000", "id Limbo (admin: id Software)"},
52 {0, "sv_qwmasterextra2", "192.246.40.37:27002", "id CTF (admin: id Software)"},
53 {0, "sv_qwmasterextra3", "192.246.40.37:27003", "id TeamFortress (admin: id Software)"},
54 {0, "sv_qwmasterextra4", "192.246.40.37:27004", "id Miscilaneous (admin: id Software)"},
55 {0, "sv_qwmasterextra5", "192.246.40.37:27006", "id Deathmatch Only (admin: id Software)"},
56 {0, "sv_qwmasterextra6", "150.254.66.120:27000", "Poland's master server. (admin: unknown)"},
57 {0, "sv_qwmasterextra7", "62.112.145.129:27000", "Ocrana master server. (admin: unknown)"},
58 {0, "sv_qwmasterextra8", "master.edome.net", "edome master server. (admin: unknown)"},
59 {0, "sv_qwmasterextra9", "qwmaster.barrysworld.com", "barrysworld master server. (admin: unknown)"},
60 {0, "sv_qwmasterextra10", "qwmaster.ocrana.de:27000", "Ocrana2 master server. (admin: unknown)"},
61 {0, "sv_qwmasterextra11", "213.221.174.165:27000", "unknown1 master server. (admin: unknown)"},
62 {0, "sv_qwmasterextra12", "195.74.0.8", "unknown2 master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra13", "204.182.161.2", "unknown3 master server. (admin: unknown)"},
67 static double nextheartbeattime = 0;
69 sizebuf_t net_message;
70 static unsigned char net_message_buf[NET_MAXMESSAGE];
72 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
73 cvar_t net_connecttimeout = {0, "net_connecttimeout","10", "after requesting a connection, the client must reply within this many seconds or be dropped (cuts down on connect floods)"};
74 cvar_t net_connectfloodblockingtimeout = {0, "net_connectfloodblockingtimeout", "5", "when a connection packet is received, it will block all future connect packets from that IP address for this many seconds (cuts down on connect floods)"};
75 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
76 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
78 cvar_t cl_netlocalping = {0, "cl_netlocalping","0", "lags local loopback connection by this much ping time (useful to play more fairly on your own server with people with higher pings)"};
79 static cvar_t cl_netpacketloss = {0, "cl_netpacketloss","0", "drops this percentage of packets (incoming and outgoing), useful for testing network protocol robustness (effects failing to start, sounds failing to play, etc)"};
80 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
81 static cvar_t net_slist_queriesperframe = {0, "net_slist_queriesperframe", "4", "maximum number of server information requests to send each rendered frame (guards against low framerates causing problems)"};
82 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
83 static cvar_t net_slist_maxtries = {0, "net_slist_maxtries", "3", "how many times to ask the same server for information (more times gives better ping reports but takes longer)"};
85 static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible"};
87 /* statistic counters */
88 static int packetsSent = 0;
89 static int packetsReSent = 0;
90 static int packetsReceived = 0;
91 static int receivedDuplicateCount = 0;
92 static int droppedDatagrams = 0;
94 static int unreliableMessagesSent = 0;
95 static int unreliableMessagesReceived = 0;
96 static int reliableMessagesSent = 0;
97 static int reliableMessagesReceived = 0;
99 double masterquerytime = -1000;
100 int masterquerycount = 0;
101 int masterreplycount = 0;
102 int serverquerycount = 0;
103 int serverreplycount = 0;
105 // this is only false if there are still servers left to query
106 static qboolean serverlist_querysleep = true;
107 // this is pushed a second or two ahead of realtime whenever a master server
108 // reply is received, to avoid issuing queries while master replies are still
109 // flooding in (which would make a mess of the ping times)
110 static double serverlist_querywaittime = 0;
112 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
113 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
115 static int cl_numsockets;
116 static lhnetsocket_t *cl_sockets[16];
117 static int sv_numsockets;
118 static lhnetsocket_t *sv_sockets[16];
120 netconn_t *netconn_list = NULL;
121 mempool_t *netconn_mempool = NULL;
123 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
124 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
125 cvar_t net_address = {0, "net_address", "0.0.0.0", "network address to open ports on"};
126 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]", "network address to open ipv6 ports on"};
128 char net_extresponse[NET_EXTRESPONSE_MAX][1400];
129 int net_extresponse_count = 0;
130 int net_extresponse_last = 0;
132 // ServerList interface
133 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
134 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
136 serverlist_infofield_t serverlist_sortbyfield;
137 qboolean serverlist_sortdescending;
139 int serverlist_viewcount = 0;
140 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
142 int serverlist_cachecount;
143 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
145 qboolean serverlist_consoleoutput;
147 // helper function to insert a value into the viewset
148 // spare entries will be removed
149 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
152 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
153 i = serverlist_viewcount++;
155 i = SERVERLIST_VIEWLISTSIZE - 1;
158 for( ; i > index ; i-- )
159 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
161 serverlist_viewlist[index] = entry;
164 // we suppose serverlist_viewcount to be valid, ie > 0
165 static void _ServerList_ViewList_Helper_Remove( int index )
167 serverlist_viewcount--;
168 for( ; index < serverlist_viewcount ; index++ )
169 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
172 // returns true if A should be inserted before B
173 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
175 int result = 0; // > 0 if for numbers A > B and for text if A < B
177 switch( serverlist_sortbyfield ) {
179 result = A->info.ping - B->info.ping;
181 case SLIF_MAXPLAYERS:
182 result = A->info.maxplayers - B->info.maxplayers;
184 case SLIF_NUMPLAYERS:
185 result = A->info.numplayers - B->info.numplayers;
188 result = A->info.protocol - B->info.protocol;
191 result = strcmp( B->info.cname, A->info.cname );
194 result = strcmp( B->info.game, A->info.game );
197 result = strcmp( B->info.map, A->info.map );
200 result = strcmp( B->info.mod, A->info.mod );
203 result = strcmp( B->info.name, A->info.name );
206 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
210 if( serverlist_sortdescending )
214 // if the chosen sort key is identical, sort by index
215 // (makes this a stable sort, so that later replies from servers won't
216 // shuffle the servers around when they have the same ping)
220 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
222 // This should actually be done with some intermediate and end-of-function return
234 case SLMO_GREATEREQUAL:
236 case SLMO_NOTCONTAIN:
239 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
244 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
247 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
248 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
249 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
251 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
252 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
255 // Same here, also using an intermediate & final return would be more appropriate
259 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
260 case SLMO_NOTCONTAIN:
261 return !*bufferB || !strstr( bufferA, bufferB );
263 return strcmp( bufferA, bufferB ) < 0;
265 return strcmp( bufferA, bufferB ) <= 0;
267 return strcmp( bufferA, bufferB ) == 0;
269 return strcmp( bufferA, bufferB ) > 0;
271 return strcmp( bufferA, bufferB ) != 0;
272 case SLMO_GREATEREQUAL:
273 return strcmp( bufferA, bufferB ) >= 0;
275 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
280 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
282 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
284 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
286 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
288 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
290 if( *mask->info.cname
291 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
294 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
297 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
300 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
303 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
308 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
312 // reject incompatible servers
313 if (entry->info.gameversion != gameversion.integer)
316 // FIXME: change this to be more readable (...)
317 // now check whether it passes through the masks
318 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
319 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
322 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
323 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
325 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
328 if( !serverlist_viewcount ) {
329 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
332 // ok, insert it, we just need to find out where exactly:
335 // check whether to insert it as new first item
336 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
337 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
339 } // check whether to insert it as new last item
340 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
341 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
345 end = serverlist_viewcount - 1;
346 while( end > start + 1 )
348 mid = (start + end) / 2;
349 // test the item that lies in the middle between start and end
350 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
351 // the item has to be in the upper half
354 // the item has to be in the lower half
357 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
360 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
363 for( i = 0; i < serverlist_viewcount; i++ )
365 if (serverlist_viewlist[i] == entry)
367 _ServerList_ViewList_Helper_Remove(i);
373 void ServerList_RebuildViewList(void)
377 serverlist_viewcount = 0;
378 for( i = 0 ; i < serverlist_cachecount ; i++ )
379 if( serverlist_cache[i].query == SQS_QUERIED )
380 ServerList_ViewList_Insert( &serverlist_cache[i] );
383 void ServerList_ResetMasks(void)
385 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
386 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
390 static void _ServerList_Test(void)
393 for( i = 0 ; i < 1024 ; i++ ) {
394 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
395 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
396 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
397 serverlist_cache[serverlist_cachecount].finished = true;
398 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
399 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
400 serverlist_cachecount++;
405 void ServerList_QueryList(qboolean querydp, qboolean queryqw)
407 masterquerytime = realtime;
408 masterquerycount = 0;
409 masterreplycount = 0;
410 serverquerycount = 0;
411 serverreplycount = 0;
412 serverlist_cachecount = 0;
413 serverlist_viewcount = 0;
414 serverlist_consoleoutput = false;
416 //_ServerList_Test();
418 NetConn_QueryMasters(querydp, queryqw);
423 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
425 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
429 if (cl_netpacketloss.integer)
430 for (i = 0;i < cl_numsockets;i++)
431 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
433 if (developer_networking.integer)
435 char addressstring[128], addressstring2[128];
436 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
439 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
440 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
441 Com_HexDumpToConsole((unsigned char *)data, length);
444 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
449 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
453 if (cl_netpacketloss.integer)
454 for (i = 0;i < cl_numsockets;i++)
455 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
457 ret = LHNET_Write(mysocket, data, length, peeraddress);
458 if (developer_networking.integer)
460 char addressstring[128], addressstring2[128];
461 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
462 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
463 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
464 Com_HexDumpToConsole((unsigned char *)data, length);
469 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
471 // note this does not include the trailing NULL because we add that in the parser
472 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
475 qboolean NetConn_CanSend(netconn_t *conn)
477 conn->outgoing_packetcounter = (conn->outgoing_packetcounter + 1) % NETGRAPH_PACKETS;
478 conn->outgoing_unreliablesize[conn->outgoing_packetcounter] = NETGRAPH_NOPACKET;
479 conn->outgoing_reliablesize[conn->outgoing_packetcounter] = NETGRAPH_NOPACKET;
480 conn->outgoing_acksize[conn->outgoing_packetcounter] = NETGRAPH_NOPACKET;
481 if (realtime > conn->cleartime)
485 conn->outgoing_unreliablesize[conn->outgoing_packetcounter] = NETGRAPH_CHOKEDPACKET;
490 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol, int rate)
494 // if this packet was supposedly choked, but we find ourselves sending one
495 // anyway, make sure the size counting starts at zero
496 // (this mostly happens on level changes and disconnects and such)
497 if (conn->outgoing_unreliablesize[conn->outgoing_packetcounter] == NETGRAPH_CHOKEDPACKET)
498 conn->outgoing_unreliablesize[conn->outgoing_packetcounter] = NETGRAPH_NOPACKET;
500 if (protocol == PROTOCOL_QUAKEWORLD)
503 qboolean sendreliable;
505 // note that it is ok to send empty messages to the qw server,
506 // otherwise it won't respond to us at all
508 sendreliable = false;
509 // if the remote side dropped the last reliable message, resend it
510 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
512 // if the reliable transmit buffer is empty, copy the current message out
513 if (!conn->sendMessageLength && conn->message.cursize)
515 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
516 conn->sendMessageLength = conn->message.cursize;
517 SZ_Clear(&conn->message); // clear the message buffer
518 conn->qw.reliable_sequence ^= 1;
521 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
522 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
523 // last received unreliable packet number, and last received reliable packet number (0 or 1)
524 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
526 conn->qw.outgoing_sequence++;
527 // client sends qport in every packet
528 if (conn == cls.netcon)
530 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
532 // also update cls.qw_outgoing_sequence
533 cls.qw_outgoing_sequence = conn->qw.outgoing_sequence;
535 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
537 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
541 conn->outgoing_unreliablesize[conn->outgoing_packetcounter] += packetLen;
543 // add the reliable message if there is one
546 conn->outgoing_reliablesize[conn->outgoing_packetcounter] += conn->sendMessageLength;
547 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
548 packetLen += conn->sendMessageLength;
549 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
552 // add the unreliable message if possible
553 if (packetLen + data->cursize <= 1400)
555 conn->outgoing_unreliablesize[conn->outgoing_packetcounter] += data->cursize;
556 memcpy(sendbuffer + packetLen, data->data, data->cursize);
557 packetLen += data->cursize;
560 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
563 unreliableMessagesSent++;
565 totallen += packetLen + 18;
569 unsigned int packetLen;
570 unsigned int dataLen;
572 unsigned int *header;
574 // if a reliable message fragment has been lost, send it again
575 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
577 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
579 dataLen = conn->sendMessageLength;
584 dataLen = MAX_PACKETFRAGMENT;
588 packetLen = NET_HEADERSIZE + dataLen;
590 header = (unsigned int *)sendbuffer;
591 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
592 header[1] = BigLong(conn->nq.sendSequence - 1);
593 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
595 conn->outgoing_reliablesize[conn->outgoing_packetcounter] += packetLen;
597 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
599 conn->lastSendTime = realtime;
603 totallen += packetLen + 18;
606 // if we have a new reliable message to send, do so
607 if (!conn->sendMessageLength && conn->message.cursize)
609 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
611 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
612 conn->message.overflowed = true;
616 if (developer_networking.integer && conn == cls.netcon)
618 Con_Print("client sending reliable message to server:\n");
619 SZ_HexDumpToConsole(&conn->message);
622 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
623 conn->sendMessageLength = conn->message.cursize;
624 SZ_Clear(&conn->message);
626 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
628 dataLen = conn->sendMessageLength;
633 dataLen = MAX_PACKETFRAGMENT;
637 packetLen = NET_HEADERSIZE + dataLen;
639 header = (unsigned int *)sendbuffer;
640 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
641 header[1] = BigLong(conn->nq.sendSequence);
642 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
644 conn->nq.sendSequence++;
646 conn->outgoing_reliablesize[conn->outgoing_packetcounter] += packetLen;
648 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
650 conn->lastSendTime = realtime;
652 reliableMessagesSent++;
654 totallen += packetLen + 18;
657 // if we have an unreliable message to send, do so
660 packetLen = NET_HEADERSIZE + data->cursize;
662 if (packetLen > (int)sizeof(sendbuffer))
664 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
668 header = (unsigned int *)sendbuffer;
669 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
670 header[1] = BigLong(conn->nq.unreliableSendSequence);
671 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
673 conn->nq.unreliableSendSequence++;
675 conn->outgoing_unreliablesize[conn->outgoing_packetcounter] += packetLen;
677 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
680 unreliableMessagesSent++;
683 totallen += packetLen + 18;
687 // delay later packets to obey rate limit
688 if (conn->cleartime < realtime - 0.1)
689 conn->cleartime = realtime - 0.1;
690 conn->cleartime = conn->cleartime + (double)totallen / (double)rate;
691 if (conn->cleartime < realtime)
692 conn->cleartime = realtime;
697 void NetConn_CloseClientPorts(void)
699 for (;cl_numsockets > 0;cl_numsockets--)
700 if (cl_sockets[cl_numsockets - 1])
701 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
704 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
706 lhnetaddress_t address;
708 char addressstring2[1024];
709 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
711 if ((s = LHNET_OpenSocket_Connectionless(&address)))
713 cl_sockets[cl_numsockets++] = s;
714 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
715 Con_Printf("Client opened a socket on address %s\n", addressstring2);
719 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
720 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
724 Con_Printf("Client unable to parse address %s\n", addressstring);
727 void NetConn_OpenClientPorts(void)
730 NetConn_CloseClientPorts();
731 port = bound(0, cl_netport.integer, 65535);
732 if (cl_netport.integer != port)
733 Cvar_SetValueQuick(&cl_netport, port);
734 Con_Printf("Client using port %i\n", port);
735 NetConn_OpenClientPort("local:2", 0);
736 NetConn_OpenClientPort(net_address.string, port);
737 //NetConn_OpenClientPort(net_address_ipv6.string, port);
740 void NetConn_CloseServerPorts(void)
742 for (;sv_numsockets > 0;sv_numsockets--)
743 if (sv_sockets[sv_numsockets - 1])
744 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
747 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
749 lhnetaddress_t address;
752 char addressstring2[1024];
754 for (port = defaultport; port <= defaultport + 100; port++)
756 if (LHNETADDRESS_FromString(&address, addressstring, port))
758 if ((s = LHNET_OpenSocket_Connectionless(&address)))
760 sv_sockets[sv_numsockets++] = s;
761 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
762 Con_Printf("Server listening on address %s\n", addressstring2);
767 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
768 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
773 Con_Printf("Server unable to parse address %s\n", addressstring);
774 // if it cant parse one address, it wont be able to parse another for sure
780 void NetConn_OpenServerPorts(int opennetports)
783 NetConn_CloseServerPorts();
784 NetConn_UpdateSockets();
785 port = bound(0, sv_netport.integer, 65535);
788 Con_Printf("Server using port %i\n", port);
789 if (sv_netport.integer != port)
790 Cvar_SetValueQuick(&sv_netport, port);
791 if (cls.state != ca_dedicated)
792 NetConn_OpenServerPort("local:1", 0);
795 NetConn_OpenServerPort(net_address.string, port);
796 //NetConn_OpenServerPort(net_address_ipv6.string, port);
798 if (sv_numsockets == 0)
799 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
802 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
804 int i, a = LHNETADDRESS_GetAddressType(address);
805 for (i = 0;i < cl_numsockets;i++)
806 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
807 return cl_sockets[i];
811 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
813 int i, a = LHNETADDRESS_GetAddressType(address);
814 for (i = 0;i < sv_numsockets;i++)
815 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
816 return sv_sockets[i];
820 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
823 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
824 conn->mysocket = mysocket;
825 conn->peeraddress = *peeraddress;
826 conn->lastMessageTime = realtime;
827 conn->message.data = conn->messagedata;
828 conn->message.maxsize = sizeof(conn->messagedata);
829 conn->message.cursize = 0;
830 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
831 // reduce effectiveness of connection request floods
832 conn->timeout = realtime + net_connecttimeout.value;
833 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
834 conn->next = netconn_list;
839 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
840 void NetConn_Close(netconn_t *conn)
843 // remove connection from list
845 // allow the client to reconnect immediately
846 NetConn_ClearConnectFlood(&(conn->peeraddress));
848 if (conn == netconn_list)
849 netconn_list = conn->next;
852 for (c = netconn_list;c;c = c->next)
856 c->next = conn->next;
860 // not found in list, we'll avoid crashing here...
868 static int clientport = -1;
869 static int clientport2 = -1;
870 static int hostport = -1;
871 void NetConn_UpdateSockets(void)
873 if (cls.state != ca_dedicated)
875 if (clientport2 != cl_netport.integer)
877 clientport2 = cl_netport.integer;
878 if (cls.state == ca_connected)
879 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
881 if (cls.state == ca_disconnected && clientport != clientport2)
883 clientport = clientport2;
884 NetConn_CloseClientPorts();
886 if (cl_numsockets == 0)
887 NetConn_OpenClientPorts();
890 if (hostport != sv_netport.integer)
892 hostport = sv_netport.integer;
894 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
898 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol, double newtimeout)
900 int originallength = length;
904 // TODO: add netgraph stuff rather than just packetloss counting...
906 if (protocol == PROTOCOL_QUAKEWORLD)
908 int sequence, sequence_ack;
909 int reliable_ack, reliable_message;
913 sequence = LittleLong(*((int *)(data + 0)));
914 sequence_ack = LittleLong(*((int *)(data + 4)));
918 if (conn != cls.netcon)
923 // TODO: use qport to identify that this client really is who they say they are? (and elsewhere in the code to identify the connection without a port match?)
924 qport = LittleShort(*((int *)(data + 8)));
930 reliable_message = (sequence >> 31) & 1;
931 reliable_ack = (sequence_ack >> 31) & 1;
932 sequence &= ~(1<<31);
933 sequence_ack &= ~(1<<31);
934 if (sequence <= conn->qw.incoming_sequence)
936 //Con_DPrint("Got a stale datagram\n");
939 count = sequence - (conn->qw.incoming_sequence + 1);
942 droppedDatagrams += count;
943 //Con_DPrintf("Dropped %u datagram(s)\n", count);
946 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
947 conn->incoming_unreliablesize[conn->incoming_packetcounter] = NETGRAPH_LOSTPACKET;
948 conn->incoming_reliablesize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
949 conn->incoming_acksize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
952 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
953 conn->incoming_unreliablesize[conn->incoming_packetcounter] = originallength;
954 conn->incoming_reliablesize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
955 conn->incoming_acksize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
956 if (reliable_ack == conn->qw.reliable_sequence)
958 // received, now we will be able to send another reliable message
959 conn->sendMessageLength = 0;
960 reliableMessagesReceived++;
962 conn->qw.incoming_sequence = sequence;
963 if (conn == cls.netcon)
964 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
965 conn->qw.incoming_acknowledged = sequence_ack;
966 conn->qw.incoming_reliable_acknowledged = reliable_ack;
967 if (reliable_message)
968 conn->qw.incoming_reliable_sequence ^= 1;
969 conn->lastMessageTime = realtime;
970 conn->timeout = realtime + newtimeout;
971 unreliableMessagesReceived++;
972 SZ_Clear(&net_message);
973 SZ_Write(&net_message, data, length);
981 unsigned int sequence;
984 qlength = (unsigned int)BigLong(((int *)data)[0]);
985 flags = qlength & ~NETFLAG_LENGTH_MASK;
986 qlength &= NETFLAG_LENGTH_MASK;
987 // control packets were already handled
988 if (!(flags & NETFLAG_CTL) && qlength == length)
990 sequence = BigLong(((int *)data)[1]);
994 if (flags & NETFLAG_UNRELIABLE)
996 if (sequence >= conn->nq.unreliableReceiveSequence)
998 if (sequence > conn->nq.unreliableReceiveSequence)
1000 count = sequence - conn->nq.unreliableReceiveSequence;
1001 droppedDatagrams += count;
1002 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1005 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1006 conn->incoming_unreliablesize[conn->incoming_packetcounter] = NETGRAPH_LOSTPACKET;
1007 conn->incoming_reliablesize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
1008 conn->incoming_acksize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
1011 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1012 conn->incoming_unreliablesize[conn->incoming_packetcounter] = originallength;
1013 conn->incoming_reliablesize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
1014 conn->incoming_acksize[conn->incoming_packetcounter] = NETGRAPH_NOPACKET;
1015 conn->nq.unreliableReceiveSequence = sequence + 1;
1016 conn->lastMessageTime = realtime;
1017 conn->timeout = realtime + newtimeout;
1018 unreliableMessagesReceived++;
1021 SZ_Clear(&net_message);
1022 SZ_Write(&net_message, data, length);
1028 // Con_DPrint("Got a stale datagram\n");
1031 else if (flags & NETFLAG_ACK)
1033 conn->incoming_acksize[conn->incoming_packetcounter] += originallength;
1034 if (sequence == (conn->nq.sendSequence - 1))
1036 if (sequence == conn->nq.ackSequence)
1038 conn->nq.ackSequence++;
1039 if (conn->nq.ackSequence != conn->nq.sendSequence)
1040 Con_DPrint("ack sequencing error\n");
1041 conn->lastMessageTime = realtime;
1042 conn->timeout = realtime + newtimeout;
1043 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
1045 unsigned int packetLen;
1046 unsigned int dataLen;
1048 unsigned int *header;
1050 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
1051 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
1053 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
1055 dataLen = conn->sendMessageLength;
1060 dataLen = MAX_PACKETFRAGMENT;
1064 packetLen = NET_HEADERSIZE + dataLen;
1066 header = (unsigned int *)sendbuffer;
1067 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
1068 header[1] = BigLong(conn->nq.sendSequence);
1069 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1071 conn->nq.sendSequence++;
1073 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
1075 conn->lastSendTime = realtime;
1080 conn->sendMessageLength = 0;
1083 // Con_DPrint("Duplicate ACK received\n");
1086 // Con_DPrint("Stale ACK received\n");
1089 else if (flags & NETFLAG_DATA)
1091 unsigned int temppacket[2];
1092 conn->incoming_reliablesize[conn->incoming_packetcounter] += originallength;
1093 conn->outgoing_acksize[conn->outgoing_packetcounter] += 8;
1094 temppacket[0] = BigLong(8 | NETFLAG_ACK);
1095 temppacket[1] = BigLong(sequence);
1096 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
1097 if (sequence == conn->nq.receiveSequence)
1099 conn->lastMessageTime = realtime;
1100 conn->timeout = realtime + newtimeout;
1101 conn->nq.receiveSequence++;
1102 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1103 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1104 conn->receiveMessageLength += length;
1106 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1107 "Dropping the message!\n", sequence );
1108 conn->receiveMessageLength = 0;
1111 if (flags & NETFLAG_EOM)
1113 reliableMessagesReceived++;
1114 length = conn->receiveMessageLength;
1115 conn->receiveMessageLength = 0;
1118 SZ_Clear(&net_message);
1119 SZ_Write(&net_message, conn->receiveMessage, length);
1126 receivedDuplicateCount++;
1134 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1136 cls.connect_trying = false;
1137 M_Update_Return_Reason("");
1138 // the connection request succeeded, stop current connection and set up a new connection
1140 // if we're connecting to a remote server, shut down any local server
1141 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1142 Host_ShutdownServer ();
1143 // allocate a net connection to keep track of things
1144 cls.netcon = NetConn_Open(mysocket, peeraddress);
1145 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1146 key_dest = key_game;
1148 cls.demonum = -1; // not in the demo loop now
1149 cls.state = ca_connected;
1150 cls.signon = 0; // need all the signon messages before playing
1151 cls.protocol = initialprotocol;
1152 // reset move sequence numbering on this new connection
1153 cls.movesequence = 0;
1154 cls.servermovesequence = 0;
1155 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1156 Cmd_ForwardStringToServer("new");
1157 if (cls.protocol == PROTOCOL_QUAKE)
1159 // write a keepalive (clc_nop) as it seems to greatly improve the
1160 // chances of connecting to a netquake server
1162 unsigned char buf[4];
1163 memset(&msg, 0, sizeof(msg));
1165 msg.maxsize = sizeof(buf);
1166 MSG_WriteChar(&msg, clc_nop);
1167 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000);
1171 int NetConn_IsLocalGame(void)
1173 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1178 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1182 // search the cache for this server and update it
1183 for (n = 0;n < serverlist_cachecount;n++)
1184 if (!strcmp(addressstring, serverlist_cache[n].info.cname))
1186 if (n == serverlist_cachecount)
1188 // LAN search doesnt require an answer from the master server so we wont
1189 // know the ping nor will it be initialized already...
1192 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1195 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1196 // store the data the engine cares about (address and ping)
1197 strlcpy(serverlist_cache[serverlist_cachecount].info.cname, addressstring, sizeof(serverlist_cache[serverlist_cachecount].info.cname));
1198 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1199 serverlist_cache[serverlist_cachecount].querytime = realtime;
1200 // if not in the slist menu we should print the server to console
1201 if (serverlist_consoleoutput)
1202 Con_Printf("querying %s\n", addressstring);
1203 ++serverlist_cachecount;
1205 // if this is the first reply from this server, count it as having replied
1206 if (serverlist_cache[n].info.ping == 100000)
1208 pingtime = (int)((realtime - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1209 pingtime = bound(0, pingtime, 9999);
1211 serverlist_cache[n].info.ping = min(serverlist_cache[n].info.ping, pingtime);
1212 // other server info is updated by the caller
1216 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1218 serverlist_info_t *info = &serverlist_cache[n].info;
1219 // update description strings for engine menu and console output
1220 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", info->ping >= 300 ? '1' : (info->ping >= 200 ? '3' : '7'), (int)info->ping, ((info->numplayers > 0 && info->numplayers < info->maxplayers) ? (info->numplayers >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1221 dpsnprintf(serverlist_cache[n].line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game, (info->gameversion != gameversion.integer) ? '1' : '4', info->mod, info->map);
1222 if (serverlist_cache[n].query == SQS_QUERIED)
1223 ServerList_ViewList_Remove(&serverlist_cache[n]);
1224 // if not in the slist menu we should print the server to console (if wanted)
1225 else if( serverlist_consoleoutput )
1226 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1227 // and finally, update the view set
1228 ServerList_ViewList_Insert( &serverlist_cache[n] );
1229 serverlist_cache[n].query = SQS_QUERIED;
1232 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1234 qboolean fromserver;
1235 int ret, c, control;
1237 char *string, addressstring2[128], ipstring[32];
1238 char stringbuf[16384];
1240 // quakeworld ingame packet
1241 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1243 // convert the address to a string incase we need it
1244 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1246 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1248 // received a command string - strip off the packaging and put it
1249 // into our string buffer with NULL termination
1252 length = min(length, (int)sizeof(stringbuf) - 1);
1253 memcpy(stringbuf, data, length);
1254 stringbuf[length] = 0;
1257 if (developer_networking.integer)
1259 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1260 Com_HexDumpToConsole(data, length);
1263 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1265 // darkplaces or quake3
1266 char protocolnames[1400];
1267 Protocol_Names(protocolnames, sizeof(protocolnames));
1268 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1269 M_Update_Return_Reason("Got challenge response");
1270 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1271 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1272 // TODO: add userinfo stuff here instead of using NQ commands?
1273 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1276 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1278 // darkplaces or quake3
1279 M_Update_Return_Reason("Accepted");
1280 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1283 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1285 char rejectreason[32];
1286 cls.connect_trying = false;
1288 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1289 memcpy(rejectreason, string, length);
1290 rejectreason[length] = 0;
1291 M_Update_Return_Reason(rejectreason);
1294 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1296 serverlist_info_t *info;
1300 // search the cache for this server and update it
1301 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1305 info = &serverlist_cache[n].info;
1306 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1307 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1308 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1309 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1310 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1311 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1312 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1313 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1315 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1319 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1321 // Extract the IP addresses
1325 if (serverlist_consoleoutput)
1326 Con_Print("received DarkPlaces server list...\n");
1327 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1331 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], data[5] * 256 + data[6]);
1332 if (serverlist_consoleoutput && developer_networking.integer)
1333 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1334 // ignore the rest of the message if the serverlist is full
1335 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1337 // also ignore it if we have already queried it (other master server response)
1338 for( n = 0 ; n < serverlist_cachecount ; n++ )
1339 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1341 if( n >= serverlist_cachecount )
1345 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1346 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_DARKPLACES7;
1347 // store the data the engine cares about (address and ping)
1348 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1349 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1350 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1352 ++serverlist_cachecount;
1355 // move on to next address in packet
1359 // begin or resume serverlist queries
1360 serverlist_querysleep = false;
1361 serverlist_querywaittime = realtime + 3;
1364 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1366 // Extract the IP addresses
1370 if (serverlist_consoleoutput)
1371 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1372 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1376 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1377 if (serverlist_consoleoutput && developer_networking.integer)
1378 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1379 // ignore the rest of the message if the serverlist is full
1380 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1382 // also ignore it if we have already queried it (other master server response)
1383 for( n = 0 ; n < serverlist_cachecount ; n++ )
1384 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1386 if( n >= serverlist_cachecount )
1390 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1391 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_QUAKEWORLD;
1392 // store the data the engine cares about (address and ping)
1393 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1394 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1395 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1397 ++serverlist_cachecount;
1400 // move on to next address in packet
1404 // begin or resume serverlist queries
1405 serverlist_querysleep = false;
1406 serverlist_querywaittime = realtime + 3;
1409 if (!strncmp(string, "extResponse ", 12))
1411 ++net_extresponse_count;
1412 if(net_extresponse_count > NET_EXTRESPONSE_MAX)
1413 net_extresponse_count = NET_EXTRESPONSE_MAX;
1414 net_extresponse_last = (net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
1415 dpsnprintf(net_extresponse[net_extresponse_last], sizeof(net_extresponse[net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
1418 if (!strncmp(string, "ping", 4))
1420 if (developer.integer >= 10)
1421 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
1422 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1425 if (!strncmp(string, "ack", 3))
1427 // QuakeWorld compatibility
1428 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1430 // challenge message
1431 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1432 M_Update_Return_Reason("Got QuakeWorld challenge response");
1433 cls.qw_qport = qport.integer;
1434 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1435 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1436 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1439 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1442 M_Update_Return_Reason("QuakeWorld Accepted");
1443 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1446 if (length > 2 && !memcmp(string, "n\\", 2))
1448 serverlist_info_t *info;
1452 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1453 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1456 // search the cache for this server and update it
1457 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1461 info = &serverlist_cache[n].info;
1462 strlcpy(info->game, "QuakeWorld", sizeof(info->game));;
1463 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1464 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1465 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1467 info->numplayers = 0; // updated below
1468 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1469 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1471 // count active players on server
1472 // (we could gather more info, but we're just after the number)
1473 s = strchr(string, '\n');
1477 while (s < string + length)
1479 for (;s < string + length && *s != '\n';s++)
1481 if (s >= string + length)
1488 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1492 if (string[0] == 'n')
1495 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
1497 // we may not have liked the packet, but it was a command packet, so
1498 // we're done processing this packet now
1501 // quakeworld ingame packet
1502 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
1505 CL_ParseServerMessage();
1508 // netquake control packets, supported for compatibility only
1509 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1512 serverlist_info_t *info;
1516 SZ_Clear(&net_message);
1517 SZ_Write(&net_message, data, length);
1523 if (developer.integer >= 10)
1524 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1525 if (cls.connect_trying)
1527 lhnetaddress_t clientportaddress;
1528 clientportaddress = *peeraddress;
1529 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong());
1530 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1531 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1532 M_Update_Return_Reason("Accepted");
1533 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1537 if (developer.integer >= 10)
1538 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1539 cls.connect_trying = false;
1540 M_Update_Return_Reason((char *)MSG_ReadString());
1542 case CCREP_SERVER_INFO:
1543 if (developer.integer >= 10)
1544 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1545 // LordHavoc: because the quake server may report weird addresses
1546 // we just ignore it and keep the real address
1548 // search the cache for this server and update it
1549 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1553 info = &serverlist_cache[n].info;
1554 strlcpy(info->game, "Quake", sizeof(info->game));
1555 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
1556 strlcpy(info->name, MSG_ReadString(), sizeof(info->name));
1557 strlcpy(info->map , MSG_ReadString(), sizeof(info->map));
1558 info->numplayers = MSG_ReadByte();
1559 info->maxplayers = MSG_ReadByte();
1560 info->protocol = MSG_ReadByte();
1562 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1565 case CCREP_PLAYER_INFO:
1566 // we got a CCREP_PLAYER_INFO??
1567 //if (developer.integer >= 10)
1568 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1570 case CCREP_RULE_INFO:
1571 // we got a CCREP_RULE_INFO??
1572 //if (developer.integer >= 10)
1573 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1578 SZ_Clear(&net_message);
1579 // we may not have liked the packet, but it was a valid control
1580 // packet, so we're done processing this packet now
1584 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
1585 CL_ParseServerMessage();
1589 void NetConn_QueryQueueFrame(void)
1595 static double querycounter = 0;
1597 if (serverlist_querysleep)
1600 // apply a cool down time after master server replies,
1601 // to avoid messing up the ping times on the servers
1602 if (serverlist_querywaittime > realtime)
1605 // each time querycounter reaches 1.0 issue a query
1606 querycounter += cl.realframetime * net_slist_queriespersecond.value;
1607 maxqueries = (int)querycounter;
1608 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1609 querycounter -= maxqueries;
1611 if( maxqueries == 0 ) {
1615 // scan serverlist and issue queries as needed
1616 serverlist_querysleep = true;
1618 timeouttime = realtime - net_slist_timeout.value;
1619 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1621 serverlist_entry_t *entry = &serverlist_cache[ index ];
1622 if( entry->query != SQS_QUERYING )
1627 serverlist_querysleep = false;
1628 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1633 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1635 lhnetaddress_t address;
1638 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1639 if (entry->protocol == PROTOCOL_QUAKEWORLD)
1641 for (socket = 0; socket < cl_numsockets ; socket++)
1642 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
1646 for (socket = 0; socket < cl_numsockets ; socket++)
1647 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1650 entry->querytime = realtime;
1651 entry->querycounter++;
1653 // if not in the slist menu we should print the server to console
1654 if (serverlist_consoleoutput)
1655 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1661 entry->query = SQS_TIMEDOUT;
1666 void NetConn_ClientFrame(void)
1669 lhnetaddress_t peeraddress;
1670 NetConn_UpdateSockets();
1671 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1673 if (cls.connect_remainingtries == 0)
1674 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1675 cls.connect_nextsendtime = realtime + 1;
1676 cls.connect_remainingtries--;
1677 if (cls.connect_remainingtries <= -10)
1679 cls.connect_trying = false;
1680 M_Update_Return_Reason("Connect: Failed");
1683 // try challenge first (newer DP server or QW)
1684 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1685 // then try netquake as a fallback (old server, or netquake)
1686 SZ_Clear(&net_message);
1687 // save space for the header, filled in later
1688 MSG_WriteLong(&net_message, 0);
1689 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1690 MSG_WriteString(&net_message, "QUAKE");
1691 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1692 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1693 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1694 SZ_Clear(&net_message);
1696 for (i = 0;i < cl_numsockets;i++)
1697 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1698 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1699 NetConn_QueryQueueFrame();
1700 if (cls.netcon && realtime > cls.netcon->timeout)
1702 Con_Print("Connection timed out\n");
1704 Host_ShutdownServer ();
1708 #define MAX_CHALLENGES 128
1711 lhnetaddress_t address;
1715 challenge[MAX_CHALLENGES];
1717 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1721 for (i = 0;i < bufferlength - 1;i++)
1725 c = rand () % (127 - 33) + 33;
1726 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1732 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1734 unsigned int nb_clients = 0, i;
1737 // How many clients are there?
1738 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1739 if (svs.clients[i].active)
1742 // TODO: we should add more information for the full status string
1743 length = dpsnprintf(out_msg, out_size,
1744 "\377\377\377\377%s\x0A"
1745 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
1746 "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
1749 fullstatus ? "statusResponse" : "infoResponse",
1750 gamename, com_modname, gameversion.integer, svs.maxclients,
1751 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1752 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1753 fullstatus ? "\n" : "");
1755 // Make sure it fits in the buffer
1764 ptr = out_msg + length;
1765 left = (int)out_size - length;
1767 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1769 client_t *cl = &svs.clients[i];
1772 int nameind, cleanind, pingvalue;
1774 char cleanname [sizeof(cl->name)];
1776 // Remove all characters '"' and '\' in the player name
1781 curchar = cl->name[nameind++];
1782 if (curchar != '"' && curchar != '\\')
1784 cleanname[cleanind++] = curchar;
1785 if (cleanind == sizeof(cleanname) - 1)
1788 } while (curchar != '\0');
1790 pingvalue = (int)(cl->ping * 1000.0f);
1791 if(cl->netconnection)
1792 pingvalue = bound(1, pingvalue, 9999);
1795 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1810 static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
1812 int floodslotnum, bestfloodslotnum;
1813 double bestfloodtime;
1814 lhnetaddress_t noportpeeraddress;
1815 // see if this is a connect flood
1816 noportpeeraddress = *peeraddress;
1817 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
1818 bestfloodslotnum = 0;
1819 bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
1820 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
1822 if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
1824 bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
1825 bestfloodslotnum = floodslotnum;
1827 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
1829 // this address matches an ongoing flood address
1830 if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
1832 // renew the ban on this address so it does not expire
1833 // until the flood has subsided
1834 sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
1835 //Con_Printf("Flood detected!\n");
1838 // the flood appears to have subsided, so allow this
1839 bestfloodslotnum = floodslotnum; // reuse the same slot
1843 // begin a new timeout on this address
1844 sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
1845 sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
1846 //Con_Printf("Flood detection initiated!\n");
1850 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
1853 lhnetaddress_t noportpeeraddress;
1854 // see if this is a connect flood
1855 noportpeeraddress = *peeraddress;
1856 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
1857 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
1859 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
1861 // this address matches an ongoing flood address
1863 sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
1864 sv.connectfloodaddresses[floodslotnum].lasttime = 0;
1865 //Con_Printf("Flood cleared!\n");
1870 extern void SV_SendServerinfo (client_t *client);
1871 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1873 int i, ret, clientnum, best;
1876 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1881 // convert the address to a string incase we need it
1882 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1884 // see if we can identify the sender as a local player
1885 // (this is necessary for rcon to send a reliable reply if the client is
1886 // actually on the server, not sending remotely)
1887 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1888 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1890 if (i == svs.maxclients)
1893 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1895 // received a command string - strip off the packaging and put it
1896 // into our string buffer with NULL termination
1899 length = min(length, (int)sizeof(stringbuf) - 1);
1900 memcpy(stringbuf, data, length);
1901 stringbuf[length] = 0;
1904 if (developer.integer >= 10)
1906 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1907 Com_HexDumpToConsole(data, length);
1910 if (length >= 12 && !memcmp(string, "getchallenge", 12) && sv_public.integer > -2)
1912 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1914 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1916 if (besttime > challenge[i].time)
1917 besttime = challenge[best = i].time;
1919 // if we did not find an exact match, choose the oldest and
1920 // update address and string
1921 if (i == MAX_CHALLENGES)
1924 challenge[i].address = *peeraddress;
1925 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1927 challenge[i].time = realtime;
1928 // send the challenge
1929 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1932 if (length > 8 && !memcmp(string, "connect\\", 8) && sv_public.integer > -2)
1937 if (!(s = SearchInfostring(string, "challenge")))
1939 // validate the challenge
1940 for (i = 0;i < MAX_CHALLENGES;i++)
1941 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1943 // if the challenge is not recognized, drop the packet
1944 if (i == MAX_CHALLENGES)
1947 // check engine protocol
1948 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1950 if (developer.integer >= 10)
1951 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1952 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1956 // see if this is a duplicate connection request or a disconnected
1957 // client who is rejoining to the same client slot
1958 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1960 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1962 // this is a known client...
1963 if (client->spawned)
1965 // client crashed and is coming back,
1966 // keep their stuff intact
1967 if (developer.integer >= 10)
1968 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
1969 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1971 SV_SendServerinfo(client);
1976 // client is still trying to connect,
1977 // so we send a duplicate reply
1978 if (developer.integer >= 10)
1979 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1980 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1986 if (NetConn_PreventConnectFlood(peeraddress))
1989 // find an empty client slot for this new client
1990 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1993 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
1995 // allocated connection
1996 if (developer.integer >= 10)
1997 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1998 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1999 // now set up the client
2001 SV_ConnectClient(clientnum, conn);
2003 NetConn_Heartbeat(1);
2008 // no empty slots found - server is full
2009 if (developer.integer >= 10)
2010 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
2011 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
2015 if (length >= 7 && !memcmp(string, "getinfo", 7) && sv_public.integer > -1)
2017 const char *challenge = NULL;
2019 // If there was a challenge in the getinfo message
2020 if (length > 8 && string[7] == ' ')
2021 challenge = string + 8;
2023 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
2025 if (developer.integer >= 10)
2026 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
2027 NetConn_WriteString(mysocket, response, peeraddress);
2031 if (length >= 9 && !memcmp(string, "getstatus", 9) && sv_public.integer > -1)
2033 const char *challenge = NULL;
2035 // If there was a challenge in the getinfo message
2036 if (length > 10 && string[9] == ' ')
2037 challenge = string + 10;
2039 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
2041 if (developer.integer >= 10)
2042 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
2043 NetConn_WriteString(mysocket, response, peeraddress);
2047 if (length >= 5 && !memcmp(string, "rcon ", 5))
2050 char *s = string + 5;
2052 for (i = 0;*s > ' ';s++)
2053 if (i < (int)sizeof(password) - 1)
2056 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
2058 // looks like a legitimate rcon command with the correct password
2059 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
2060 rcon_redirect = true;
2061 rcon_redirect_bufferpos = 0;
2062 Cmd_ExecuteString(s, src_command);
2063 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
2064 rcon_redirect = false;
2065 // print resulting text to client
2066 // if client is playing, send a reliable reply instead of
2070 // if the netconnection is loop, then this is the
2071 // local player on a listen mode server, and it would
2072 // result in duplicate printing to the console
2073 // (not that the local player should be using rcon
2074 // when they have the console)
2075 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2076 SV_ClientPrintf("%s", rcon_redirect_buffer);
2081 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
2082 NetConn_WriteString(mysocket, response, peeraddress);
2087 if (!strncmp(string, "ping", 4))
2089 if (developer.integer >= 10)
2090 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
2091 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
2094 if (!strncmp(string, "ack", 3))
2096 // we may not have liked the packet, but it was a command packet, so
2097 // we're done processing this packet now
2100 // netquake control packets, supported for compatibility only, and only
2101 // when running game protocols that are normally served via this connection
2103 // (this protects more modern protocols against being used for
2104 // Quake packet flood Denial Of Service attacks)
2105 if (length >= 5 && (i = BigLong(*((int *)data))) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3))
2109 const char *protocolname;
2112 SZ_Clear(&net_message);
2113 SZ_Write(&net_message, data, length);
2119 if (developer.integer >= 10)
2120 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
2121 if(sv_public.integer <= -2)
2124 protocolname = MSG_ReadString();
2125 protocolnumber = MSG_ReadByte();
2126 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
2128 if (developer.integer >= 10)
2129 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
2130 SZ_Clear(&net_message);
2131 // save space for the header, filled in later
2132 MSG_WriteLong(&net_message, 0);
2133 MSG_WriteByte(&net_message, CCREP_REJECT);
2134 MSG_WriteString(&net_message, "Incompatible version.\n");
2135 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2136 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2137 SZ_Clear(&net_message);
2141 // see if this connect request comes from a known client
2142 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2144 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2146 // this is either a duplicate connection request
2147 // or coming back from a timeout
2148 // (if so, keep their stuff intact)
2151 if (developer.integer >= 10)
2152 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
2153 SZ_Clear(&net_message);
2154 // save space for the header, filled in later
2155 MSG_WriteLong(&net_message, 0);
2156 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2157 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
2158 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2159 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2160 SZ_Clear(&net_message);
2162 // if client is already spawned, re-send the
2163 // serverinfo message as they'll need it to play
2164 if (client->spawned)
2167 SV_SendServerinfo(client);
2174 // this is a new client, check for connection flood
2175 if (NetConn_PreventConnectFlood(peeraddress))
2178 // find a slot for the new client
2179 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2182 if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
2184 // connect to the client
2185 // everything is allocated, just fill in the details
2186 strlcpy (conn->address, addressstring2, sizeof (conn->address));
2187 if (developer.integer >= 10)
2188 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
2189 // send back the info about the server connection
2190 SZ_Clear(&net_message);
2191 // save space for the header, filled in later
2192 MSG_WriteLong(&net_message, 0);
2193 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2194 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
2195 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2196 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2197 SZ_Clear(&net_message);
2198 // now set up the client struct
2200 SV_ConnectClient(clientnum, conn);
2202 NetConn_Heartbeat(1);
2207 if (developer.integer >= 10)
2208 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
2209 // no room; try to let player know
2210 SZ_Clear(&net_message);
2211 // save space for the header, filled in later
2212 MSG_WriteLong(&net_message, 0);
2213 MSG_WriteByte(&net_message, CCREP_REJECT);
2214 MSG_WriteString(&net_message, "Server is full.\n");
2215 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2216 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2217 SZ_Clear(&net_message);
2219 case CCREQ_SERVER_INFO:
2220 if (developer.integer >= 10)
2221 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
2222 if(sv_public.integer <= -1)
2224 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
2227 char myaddressstring[128];
2228 if (developer.integer >= 10)
2229 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
2230 SZ_Clear(&net_message);
2231 // save space for the header, filled in later
2232 MSG_WriteLong(&net_message, 0);
2233 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
2234 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
2235 MSG_WriteString(&net_message, myaddressstring);
2236 MSG_WriteString(&net_message, hostname.string);
2237 MSG_WriteString(&net_message, sv.name);
2238 // How many clients are there?
2239 for (i = 0, numclients = 0;i < svs.maxclients;i++)
2240 if (svs.clients[i].active)
2242 MSG_WriteByte(&net_message, numclients);
2243 MSG_WriteByte(&net_message, svs.maxclients);
2244 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2245 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2246 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2247 SZ_Clear(&net_message);
2250 case CCREQ_PLAYER_INFO:
2251 if (developer.integer >= 10)
2252 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
2253 if(sv_public.integer <= -1)
2257 int playerNumber, activeNumber, clientNumber;
2260 playerNumber = MSG_ReadByte();
2262 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
2263 if (client->active && ++activeNumber == playerNumber)
2265 if (clientNumber != svs.maxclients)
2267 SZ_Clear(&net_message);
2268 // save space for the header, filled in later
2269 MSG_WriteLong(&net_message, 0);
2270 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
2271 MSG_WriteByte(&net_message, playerNumber);
2272 MSG_WriteString(&net_message, client->name);
2273 MSG_WriteLong(&net_message, client->colors);
2274 MSG_WriteLong(&net_message, client->frags);
2275 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
2276 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
2277 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2278 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2279 SZ_Clear(&net_message);
2283 case CCREQ_RULE_INFO:
2284 if (developer.integer >= 10)
2285 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
2286 if(sv_public.integer <= -1)
2293 // find the search start location
2294 prevCvarName = MSG_ReadString();
2295 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
2297 // send the response
2298 SZ_Clear(&net_message);
2299 // save space for the header, filled in later
2300 MSG_WriteLong(&net_message, 0);
2301 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
2304 MSG_WriteString(&net_message, var->name);
2305 MSG_WriteString(&net_message, var->string);
2307 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2308 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2309 SZ_Clear(&net_message);
2315 SZ_Clear(&net_message);
2316 // we may not have liked the packet, but it was a valid control
2317 // packet, so we're done processing this packet now
2322 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
2325 SV_ReadClientMessage();
2333 void NetConn_ServerFrame(void)
2336 lhnetaddress_t peeraddress;
2337 for (i = 0;i < sv_numsockets;i++)
2338 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2339 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2340 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2342 // never timeout loopback connections
2343 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2345 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2347 SV_DropClient(false);
2353 void NetConn_SleepMicroseconds(int microseconds)
2355 LHNET_SleepUntilPacket_Microseconds(microseconds);
2358 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
2362 lhnetaddress_t masteraddress;
2363 lhnetaddress_t broadcastaddress;
2366 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2369 // 26000 is the default quake server port, servers on other ports will not
2371 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2372 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2376 for (i = 0;i < cl_numsockets;i++)
2380 // search LAN for Quake servers
2381 SZ_Clear(&net_message);
2382 // save space for the header, filled in later
2383 MSG_WriteLong(&net_message, 0);
2384 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2385 MSG_WriteString(&net_message, "QUAKE");
2386 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2387 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2388 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2389 SZ_Clear(&net_message);
2391 // search LAN for DarkPlaces servers
2392 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2394 // build the getservers message to send to the dpmaster master servers
2395 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2398 for (masternum = 0;sv_masters[masternum].name;masternum++)
2400 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2403 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2410 // only query QuakeWorld servers when the user wants to
2413 for (i = 0;i < cl_numsockets;i++)
2417 // search LAN for QuakeWorld servers
2418 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
2420 // build the getservers message to send to the qwmaster master servers
2421 // note this has no -1 prefix, and the trailing nul byte is sent
2422 dpsnprintf(request, sizeof(request), "c\n");
2425 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
2427 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2429 if (m_state != m_slist)
2431 char lookupstring[128];
2432 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
2433 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
2436 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
2442 if (!masterquerycount)
2444 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2445 M_Update_Return_Reason("No network");
2449 void NetConn_Heartbeat(int priority)
2451 lhnetaddress_t masteraddress;
2453 lhnetsocket_t *mysocket;
2455 // if it's a state change (client connected), limit next heartbeat to no
2456 // more than 30 sec in the future
2457 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2458 nextheartbeattime = realtime + 30.0;
2460 // limit heartbeatperiod to 30 to 270 second range,
2461 // lower limit is to avoid abusing master servers with excess traffic,
2462 // upper limit is to avoid timing out on the master server (which uses
2464 if (sv_heartbeatperiod.value < 30)
2465 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2466 if (sv_heartbeatperiod.value > 270)
2467 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2469 // make advertising optional and don't advertise singleplayer games, and
2470 // only send a heartbeat as often as the admin wants
2471 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2473 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2474 for (masternum = 0;sv_masters[masternum].name;masternum++)
2475 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2476 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2480 static void Net_Heartbeat_f(void)
2483 NetConn_Heartbeat(2);
2485 Con_Print("No server running, can not heartbeat to master server.\n");
2488 void PrintStats(netconn_t *conn)
2490 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2491 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2493 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2496 void Net_Stats_f(void)
2499 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2500 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2501 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2502 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2503 Con_Printf("packetsSent = %i\n", packetsSent);
2504 Con_Printf("packetsReSent = %i\n", packetsReSent);
2505 Con_Printf("packetsReceived = %i\n", packetsReceived);
2506 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2507 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2508 Con_Print("connections =\n");
2509 for (conn = netconn_list;conn;conn = conn->next)
2513 void Net_Slist_f(void)
2515 ServerList_ResetMasks();
2516 serverlist_sortbyfield = SLIF_PING;
2517 serverlist_sortdescending = false;
2518 if (m_state != m_slist) {
2519 Con_Print("Sending requests to master servers\n");
2520 ServerList_QueryList(true, false);
2521 serverlist_consoleoutput = true;
2522 Con_Print("Listening for replies...\n");
2524 ServerList_QueryList(true, false);
2527 void Net_SlistQW_f(void)
2529 ServerList_ResetMasks();
2530 serverlist_sortbyfield = SLIF_PING;
2531 serverlist_sortdescending = false;
2532 if (m_state != m_slist) {
2533 Con_Print("Sending requests to master servers\n");
2534 ServerList_QueryList(false, true);
2535 serverlist_consoleoutput = true;
2536 Con_Print("Listening for replies...\n");
2538 ServerList_QueryList(false, true);
2541 void NetConn_Init(void)
2544 lhnetaddress_t tempaddress;
2545 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2546 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2547 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
2548 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
2549 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2550 Cvar_RegisterVariable(&net_slist_queriespersecond);
2551 Cvar_RegisterVariable(&net_slist_queriesperframe);
2552 Cvar_RegisterVariable(&net_slist_timeout);
2553 Cvar_RegisterVariable(&net_slist_maxtries);
2554 Cvar_RegisterVariable(&net_messagetimeout);
2555 Cvar_RegisterVariable(&net_connecttimeout);
2556 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
2557 Cvar_RegisterVariable(&cl_netlocalping);
2558 Cvar_RegisterVariable(&cl_netpacketloss);
2559 Cvar_RegisterVariable(&hostname);
2560 Cvar_RegisterVariable(&developer_networking);
2561 Cvar_RegisterVariable(&cl_netport);
2562 Cvar_RegisterVariable(&sv_netport);
2563 Cvar_RegisterVariable(&net_address);
2564 //Cvar_RegisterVariable(&net_address_ipv6);
2565 Cvar_RegisterVariable(&sv_public);
2566 Cvar_RegisterVariable(&sv_heartbeatperiod);
2567 for (i = 0;sv_masters[i].name;i++)
2568 Cvar_RegisterVariable(&sv_masters[i]);
2569 Cvar_RegisterVariable(&gameversion);
2570 // COMMANDLINEOPTION: Server: -ip <ipaddress> sets the ip address of this machine for purposes of networking (default 0.0.0.0 also known as INADDR_ANY), use only if you have multiple network adapters and need to choose one specifically.
2571 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2573 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2575 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
2576 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2579 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2581 // COMMANDLINEOPTION: Server: -port <portnumber> sets the port to use for a server (default 26000, the same port as QUAKE itself), useful if you host multiple servers on your machine
2582 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2584 i = atoi(com_argv[i + 1]);
2585 if (i >= 0 && i < 65536)
2587 Con_Printf("-port option used, setting port cvar to %i\n", i);
2588 Cvar_SetValueQuick(&sv_netport, i);
2591 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2595 net_message.data = net_message_buf;
2596 net_message.maxsize = sizeof(net_message_buf);
2597 net_message.cursize = 0;
2601 void NetConn_Shutdown(void)
2603 NetConn_CloseClientPorts();
2604 NetConn_CloseServerPorts();