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", "advertises this server on the master server (so that players can find it in the server browser)"};
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", "12.166.196.192", "default master server 3 (admin: Venim)"}, // admin: Venim
42 {0, "sv_masterextra4", "excalibur.nvg.ntnu.no", "default master server 4 (admin: tChr)"}, // admin: tChr
46 static cvar_t sv_qwmasters [] =
48 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
49 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
50 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
51 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
52 {0, "sv_qwmasterextra1", "192.246.40.37:27000", "id Limbo (admin: id Software)"},
53 {0, "sv_qwmasterextra2", "192.246.40.37:27002", "id CTF (admin: id Software)"},
54 {0, "sv_qwmasterextra3", "192.246.40.37:27003", "id TeamFortress (admin: id Software)"},
55 {0, "sv_qwmasterextra4", "192.246.40.37:27004", "id Miscilaneous (admin: id Software)"},
56 {0, "sv_qwmasterextra5", "192.246.40.37:27006", "id Deathmatch Only (admin: id Software)"},
57 {0, "sv_qwmasterextra6", "150.254.66.120:27000", "Poland's master server. (admin: unknown)"},
58 {0, "sv_qwmasterextra7", "62.112.145.129:27000", "Ocrana master server. (admin: unknown)"},
59 {0, "sv_qwmasterextra8", "master.edome.net", "edome master server. (admin: unknown)"},
60 {0, "sv_qwmasterextra9", "qwmaster.barrysworld.com", "barrysworld master server. (admin: unknown)"},
61 {0, "sv_qwmasterextra10", "qwmaster.ocrana.de:27000", "Ocrana2 master server. (admin: unknown)"},
62 {0, "sv_qwmasterextra11", "213.221.174.165:27000", "unknown1 master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra12", "195.74.0.8", "unknown2 master server. (admin: unknown)"},
64 {0, "sv_qwmasterextra13", "204.182.161.2", "unknown3 master server. (admin: unknown)"},
68 static double nextheartbeattime = 0;
70 sizebuf_t net_message;
71 static unsigned char net_message_buf[NET_MAXMESSAGE];
73 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
74 cvar_t net_messagerejointimeout = {0, "net_messagerejointimeout","10", "give a player this much time in seconds to rejoin and continue playing (not losing frags and such)"};
75 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)"};
76 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
77 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
79 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)"};
80 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)"};
81 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
82 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)"};
83 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
84 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)"};
86 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"};
88 /* statistic counters */
89 static int packetsSent = 0;
90 static int packetsReSent = 0;
91 static int packetsReceived = 0;
92 static int receivedDuplicateCount = 0;
93 static int droppedDatagrams = 0;
95 static int unreliableMessagesSent = 0;
96 static int unreliableMessagesReceived = 0;
97 static int reliableMessagesSent = 0;
98 static int reliableMessagesReceived = 0;
100 double masterquerytime = -1000;
101 int masterquerycount = 0;
102 int masterreplycount = 0;
103 int serverquerycount = 0;
104 int serverreplycount = 0;
106 // this is only false if there are still servers left to query
107 static qboolean serverlist_querysleep = true;
108 // this is pushed a second or two ahead of realtime whenever a master server
109 // reply is received, to avoid issuing queries while master replies are still
110 // flooding in (which would make a mess of the ping times)
111 static double serverlist_querywaittime = 0;
113 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
114 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
116 static int cl_numsockets;
117 static lhnetsocket_t *cl_sockets[16];
118 static int sv_numsockets;
119 static lhnetsocket_t *sv_sockets[16];
121 netconn_t *netconn_list = NULL;
122 mempool_t *netconn_mempool = NULL;
124 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
125 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
126 cvar_t net_address = {0, "net_address", "0.0.0.0", "network address to open ports on"};
127 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]", "network address to open ipv6 ports on"};
129 // ServerList interface
130 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
131 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
133 serverlist_infofield_t serverlist_sortbyfield;
134 qboolean serverlist_sortdescending;
136 int serverlist_viewcount = 0;
137 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
139 int serverlist_cachecount;
140 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
142 qboolean serverlist_consoleoutput;
144 // helper function to insert a value into the viewset
145 // spare entries will be removed
146 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
149 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
150 i = serverlist_viewcount++;
152 i = SERVERLIST_VIEWLISTSIZE - 1;
155 for( ; i > index ; i-- )
156 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
158 serverlist_viewlist[index] = entry;
161 // we suppose serverlist_viewcount to be valid, ie > 0
162 static void _ServerList_ViewList_Helper_Remove( int index )
164 serverlist_viewcount--;
165 for( ; index < serverlist_viewcount ; index++ )
166 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
169 // returns true if A should be inserted before B
170 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
172 int result = 0; // > 0 if for numbers A > B and for text if A < B
174 switch( serverlist_sortbyfield ) {
176 result = A->info.ping - B->info.ping;
178 case SLIF_MAXPLAYERS:
179 result = A->info.maxplayers - B->info.maxplayers;
181 case SLIF_NUMPLAYERS:
182 result = A->info.numplayers - B->info.numplayers;
185 result = A->info.protocol - B->info.protocol;
188 result = strcmp( B->info.cname, A->info.cname );
191 result = strcmp( B->info.game, A->info.game );
194 result = strcmp( B->info.map, A->info.map );
197 result = strcmp( B->info.mod, A->info.mod );
200 result = strcmp( B->info.name, A->info.name );
203 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
207 if( serverlist_sortdescending )
211 // if the chosen sort key is identical, sort by index
212 // (makes this a stable sort, so that later replies from servers won't
213 // shuffle the servers around when they have the same ping)
217 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
219 // This should actually be done with some intermediate and end-of-function return
231 case SLMO_GREATEREQUAL:
233 case SLMO_NOTCONTAIN:
236 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
241 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
244 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
245 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
246 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
248 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
249 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
252 // Same here, also using an intermediate & final return would be more appropriate
256 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
257 case SLMO_NOTCONTAIN:
258 return !*bufferB || !strstr( bufferA, bufferB );
260 return strcmp( bufferA, bufferB ) < 0;
262 return strcmp( bufferA, bufferB ) <= 0;
264 return strcmp( bufferA, bufferB ) == 0;
266 return strcmp( bufferA, bufferB ) > 0;
268 return strcmp( bufferA, bufferB ) != 0;
269 case SLMO_GREATEREQUAL:
270 return strcmp( bufferA, bufferB ) >= 0;
272 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
277 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
279 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
281 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
283 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
285 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
287 if( *mask->info.cname
288 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
291 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
294 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
297 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
300 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
305 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
309 // reject incompatible servers
310 if (entry->info.gameversion != gameversion.integer)
313 // FIXME: change this to be more readable (...)
314 // now check whether it passes through the masks
315 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
316 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
319 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
320 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
322 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
325 if( !serverlist_viewcount ) {
326 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
329 // ok, insert it, we just need to find out where exactly:
332 // check whether to insert it as new first item
333 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
334 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
336 } // check whether to insert it as new last item
337 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
338 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
342 end = serverlist_viewcount - 1;
343 while( end > start + 1 )
345 mid = (start + end) / 2;
346 // test the item that lies in the middle between start and end
347 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
348 // the item has to be in the upper half
351 // the item has to be in the lower half
354 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
357 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
360 for( i = 0; i < serverlist_viewcount; i++ )
362 if (serverlist_viewlist[i] == entry)
364 _ServerList_ViewList_Helper_Remove(i);
370 void ServerList_RebuildViewList(void)
374 serverlist_viewcount = 0;
375 for( i = 0 ; i < serverlist_cachecount ; i++ )
376 if( serverlist_cache[i].query == SQS_QUERIED )
377 ServerList_ViewList_Insert( &serverlist_cache[i] );
380 void ServerList_ResetMasks(void)
382 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
383 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
387 static void _ServerList_Test(void)
390 for( i = 0 ; i < 1024 ; i++ ) {
391 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
392 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
393 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
394 serverlist_cache[serverlist_cachecount].finished = true;
395 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
396 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
397 serverlist_cachecount++;
402 void ServerList_QueryList(qboolean querydp, qboolean queryqw)
404 //masterquerytime = realtime;
405 masterquerytime = Sys_DoubleTime();
406 masterquerycount = 0;
407 masterreplycount = 0;
408 serverquerycount = 0;
409 serverreplycount = 0;
410 serverlist_cachecount = 0;
411 serverlist_viewcount = 0;
412 serverlist_consoleoutput = false;
414 //_ServerList_Test();
416 NetConn_QueryMasters(querydp, queryqw);
421 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
423 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
427 if (cl_netpacketloss.integer)
428 for (i = 0;i < cl_numsockets;i++)
429 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
431 if (developer_networking.integer)
433 char addressstring[128], addressstring2[128];
434 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
437 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
438 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
439 Com_HexDumpToConsole((unsigned char *)data, length);
442 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
447 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
451 if (cl_netpacketloss.integer)
452 for (i = 0;i < cl_numsockets;i++)
453 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
455 ret = LHNET_Write(mysocket, data, length, peeraddress);
456 if (developer_networking.integer)
458 char addressstring[128], addressstring2[128];
459 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
460 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
461 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
462 Com_HexDumpToConsole((unsigned char *)data, length);
467 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
469 // note this does not include the trailing NULL because we add that in the parser
470 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
473 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol)
475 if (protocol == PROTOCOL_QUAKEWORLD)
478 qboolean sendreliable;
480 // note that it is ok to send empty messages to the qw server,
481 // otherwise it won't respond to us at all
483 sendreliable = false;
484 // if the remote side dropped the last reliable message, resend it
485 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
487 // if the reliable transmit buffer is empty, copy the current message out
488 if (!conn->sendMessageLength && conn->message.cursize)
490 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
491 conn->sendMessageLength = conn->message.cursize;
492 SZ_Clear(&conn->message); // clear the message buffer
493 conn->qw.reliable_sequence ^= 1;
496 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
497 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
498 // last received unreliable packet number, and last received reliable packet number (0 or 1)
499 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
501 conn->qw.outgoing_sequence++;
502 // client sends qport in every packet
503 if (conn == cls.netcon)
505 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
508 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
510 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
513 // add the reliable message if there is one
516 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
517 packetLen += conn->sendMessageLength;
518 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
520 // add the unreliable message if possible
521 if (packetLen + data->cursize <= 1400)
523 memcpy(sendbuffer + packetLen, data->data, data->cursize);
524 packetLen += data->cursize;
527 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
530 unreliableMessagesSent++;
532 // delay later packets to obey rate limit
533 conn->qw.cleartime = max(conn->qw.cleartime, realtime) + packetLen * conn->qw.rate;
539 unsigned int packetLen;
540 unsigned int dataLen;
542 unsigned int *header;
544 // if a reliable message fragment has been lost, send it again
545 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
547 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
549 dataLen = conn->sendMessageLength;
554 dataLen = MAX_PACKETFRAGMENT;
558 packetLen = NET_HEADERSIZE + dataLen;
560 header = (unsigned int *)sendbuffer;
561 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
562 header[1] = BigLong(conn->nq.sendSequence - 1);
563 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
565 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
567 conn->lastSendTime = realtime;
572 // if we have a new reliable message to send, do so
573 if (!conn->sendMessageLength && conn->message.cursize)
575 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
577 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, sizeof(conn->sendMessage));
578 conn->message.overflowed = true;
582 if (developer_networking.integer && conn == cls.netcon)
584 Con_Print("client sending reliable message to server:\n");
585 SZ_HexDumpToConsole(&conn->message);
588 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
589 conn->sendMessageLength = conn->message.cursize;
590 SZ_Clear(&conn->message);
592 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
594 dataLen = conn->sendMessageLength;
599 dataLen = MAX_PACKETFRAGMENT;
603 packetLen = NET_HEADERSIZE + dataLen;
605 header = (unsigned int *)sendbuffer;
606 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
607 header[1] = BigLong(conn->nq.sendSequence);
608 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
610 conn->nq.sendSequence++;
612 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
614 conn->lastSendTime = realtime;
616 reliableMessagesSent++;
619 // if we have an unreliable message to send, do so
622 packetLen = NET_HEADERSIZE + data->cursize;
624 if (packetLen > (int)sizeof(sendbuffer))
626 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
630 header = (unsigned int *)sendbuffer;
631 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
632 header[1] = BigLong(conn->nq.unreliableSendSequence);
633 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
635 conn->nq.unreliableSendSequence++;
637 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
640 unreliableMessagesSent++;
646 void NetConn_CloseClientPorts(void)
648 for (;cl_numsockets > 0;cl_numsockets--)
649 if (cl_sockets[cl_numsockets - 1])
650 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
653 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
655 lhnetaddress_t address;
657 char addressstring2[1024];
658 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
660 if ((s = LHNET_OpenSocket_Connectionless(&address)))
662 cl_sockets[cl_numsockets++] = s;
663 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
664 Con_Printf("Client opened a socket on address %s\n", addressstring2);
668 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
669 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
673 Con_Printf("Client unable to parse address %s\n", addressstring);
676 void NetConn_OpenClientPorts(void)
679 NetConn_CloseClientPorts();
680 port = bound(0, cl_netport.integer, 65535);
681 if (cl_netport.integer != port)
682 Cvar_SetValueQuick(&cl_netport, port);
683 Con_Printf("Client using port %i\n", port);
684 NetConn_OpenClientPort("local:2", 0);
685 NetConn_OpenClientPort(net_address.string, port);
686 //NetConn_OpenClientPort(net_address_ipv6.string, port);
689 void NetConn_CloseServerPorts(void)
691 for (;sv_numsockets > 0;sv_numsockets--)
692 if (sv_sockets[sv_numsockets - 1])
693 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
696 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
698 lhnetaddress_t address;
701 char addressstring2[1024];
703 for (port = defaultport; port <= defaultport + 100; port++)
705 if (LHNETADDRESS_FromString(&address, addressstring, port))
707 if ((s = LHNET_OpenSocket_Connectionless(&address)))
709 sv_sockets[sv_numsockets++] = s;
710 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
711 Con_Printf("Server listening on address %s\n", addressstring2);
716 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
717 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
722 Con_Printf("Server unable to parse address %s\n", addressstring);
723 // if it cant parse one address, it wont be able to parse another for sure
729 void NetConn_OpenServerPorts(int opennetports)
732 NetConn_CloseServerPorts();
733 NetConn_UpdateSockets();
734 port = bound(0, sv_netport.integer, 65535);
737 Con_Printf("Server using port %i\n", port);
738 if (sv_netport.integer != port)
739 Cvar_SetValueQuick(&sv_netport, port);
740 if (cls.state != ca_dedicated)
741 NetConn_OpenServerPort("local:1", 0);
744 NetConn_OpenServerPort(net_address.string, port);
745 //NetConn_OpenServerPort(net_address_ipv6.string, port);
747 if (sv_numsockets == 0)
748 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
751 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
753 int i, a = LHNETADDRESS_GetAddressType(address);
754 for (i = 0;i < cl_numsockets;i++)
755 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
756 return cl_sockets[i];
760 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
762 int i, a = LHNETADDRESS_GetAddressType(address);
763 for (i = 0;i < sv_numsockets;i++)
764 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
765 return sv_sockets[i];
769 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
772 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
773 conn->mysocket = mysocket;
774 conn->peeraddress = *peeraddress;
775 conn->lastMessageTime = realtime;
776 conn->message.data = conn->messagedata;
777 conn->message.maxsize = sizeof(conn->messagedata);
778 conn->message.cursize = 0;
779 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
780 // reduce effectiveness of connection request floods
781 conn->timeout = realtime + net_connecttimeout.value;
782 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
783 conn->next = netconn_list;
788 void NetConn_Close(netconn_t *conn)
791 // remove connection from list
792 if (conn == netconn_list)
793 netconn_list = conn->next;
796 for (c = netconn_list;c;c = c->next)
800 c->next = conn->next;
804 // not found in list, we'll avoid crashing here...
812 static int clientport = -1;
813 static int clientport2 = -1;
814 static int hostport = -1;
815 void NetConn_UpdateSockets(void)
817 if (cls.state != ca_dedicated)
819 if (clientport2 != cl_netport.integer)
821 clientport2 = cl_netport.integer;
822 if (cls.state == ca_connected)
823 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
825 if (cls.state == ca_disconnected && clientport != clientport2)
827 clientport = clientport2;
828 NetConn_CloseClientPorts();
830 if (cl_numsockets == 0)
831 NetConn_OpenClientPorts();
834 if (hostport != sv_netport.integer)
836 hostport = sv_netport.integer;
838 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
842 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol)
847 if (protocol == PROTOCOL_QUAKEWORLD)
849 int sequence, sequence_ack;
850 int reliable_ack, reliable_message;
854 sequence = LittleLong(*((int *)(data + 0)));
855 sequence_ack = LittleLong(*((int *)(data + 4)));
859 if (conn != cls.netcon)
864 // 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?)
865 qport = LittleShort(*((int *)(data + 8)));
871 reliable_message = (sequence >> 31) & 1;
872 reliable_ack = (sequence_ack >> 31) & 1;
873 sequence &= ~(1<<31);
874 sequence_ack &= ~(1<<31);
875 if (sequence <= conn->qw.incoming_sequence)
877 Con_DPrint("Got a stale datagram\n");
880 count = sequence - (conn->qw.incoming_sequence + 1);
883 droppedDatagrams += count;
884 Con_DPrintf("Dropped %u datagram(s)\n", count);
886 if (reliable_ack == conn->qw.reliable_sequence)
888 // received, now we will be able to send another reliable message
889 conn->sendMessageLength = 0;
890 reliableMessagesReceived++;
892 conn->qw.incoming_sequence = sequence;
893 conn->qw.incoming_acknowledged = sequence_ack;
894 conn->qw.incoming_reliable_acknowledged = reliable_ack;
895 if (reliable_message)
896 conn->qw.incoming_reliable_sequence ^= 1;
897 conn->lastMessageTime = realtime;
898 conn->timeout = realtime + net_messagetimeout.value;
899 unreliableMessagesReceived++;
900 SZ_Clear(&net_message);
901 SZ_Write(&net_message, data, length);
909 unsigned int sequence;
912 qlength = (unsigned int)BigLong(((int *)data)[0]);
913 flags = qlength & ~NETFLAG_LENGTH_MASK;
914 qlength &= NETFLAG_LENGTH_MASK;
915 // control packets were already handled
916 if (!(flags & NETFLAG_CTL) && qlength == length)
918 sequence = BigLong(((int *)data)[1]);
922 if (flags & NETFLAG_UNRELIABLE)
924 if (sequence >= conn->nq.unreliableReceiveSequence)
926 if (sequence > conn->nq.unreliableReceiveSequence)
928 count = sequence - conn->nq.unreliableReceiveSequence;
929 droppedDatagrams += count;
930 Con_DPrintf("Dropped %u datagram(s)\n", count);
932 conn->nq.unreliableReceiveSequence = sequence + 1;
933 conn->lastMessageTime = realtime;
934 conn->timeout = realtime + net_messagetimeout.value;
935 unreliableMessagesReceived++;
938 SZ_Clear(&net_message);
939 SZ_Write(&net_message, data, length);
945 Con_DPrint("Got a stale datagram\n");
948 else if (flags & NETFLAG_ACK)
950 if (sequence == (conn->nq.sendSequence - 1))
952 if (sequence == conn->nq.ackSequence)
954 conn->nq.ackSequence++;
955 if (conn->nq.ackSequence != conn->nq.sendSequence)
956 Con_DPrint("ack sequencing error\n");
957 conn->lastMessageTime = realtime;
958 conn->timeout = realtime + net_messagetimeout.value;
959 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
961 unsigned int packetLen;
962 unsigned int dataLen;
964 unsigned int *header;
966 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
967 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
969 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
971 dataLen = conn->sendMessageLength;
976 dataLen = MAX_PACKETFRAGMENT;
980 packetLen = NET_HEADERSIZE + dataLen;
982 header = (unsigned int *)sendbuffer;
983 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
984 header[1] = BigLong(conn->nq.sendSequence);
985 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
987 conn->nq.sendSequence++;
989 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
991 conn->lastSendTime = realtime;
996 conn->sendMessageLength = 0;
999 Con_DPrint("Duplicate ACK received\n");
1002 Con_DPrint("Stale ACK received\n");
1005 else if (flags & NETFLAG_DATA)
1007 unsigned int temppacket[2];
1008 temppacket[0] = BigLong(8 | NETFLAG_ACK);
1009 temppacket[1] = BigLong(sequence);
1010 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
1011 if (sequence == conn->nq.receiveSequence)
1013 conn->lastMessageTime = realtime;
1014 conn->timeout = realtime + net_messagetimeout.value;
1015 conn->nq.receiveSequence++;
1016 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1017 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1018 conn->receiveMessageLength += length;
1020 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1021 "Dropping the message!\n", sequence );
1022 conn->receiveMessageLength = 0;
1025 if (flags & NETFLAG_EOM)
1027 reliableMessagesReceived++;
1028 length = conn->receiveMessageLength;
1029 conn->receiveMessageLength = 0;
1032 SZ_Clear(&net_message);
1033 SZ_Write(&net_message, conn->receiveMessage, length);
1040 receivedDuplicateCount++;
1048 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1050 cls.connect_trying = false;
1051 M_Update_Return_Reason("");
1052 // the connection request succeeded, stop current connection and set up a new connection
1054 // if we're connecting to a remote server, shut down any local server
1055 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1056 Host_ShutdownServer ();
1057 // allocate a net connection to keep track of things
1058 cls.netcon = NetConn_Open(mysocket, peeraddress);
1059 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1060 key_dest = key_game;
1062 cls.demonum = -1; // not in the demo loop now
1063 cls.state = ca_connected;
1064 cls.signon = 0; // need all the signon messages before playing
1065 cls.protocol = initialprotocol;
1066 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1067 Cmd_ForwardStringToServer("new");
1070 int NetConn_IsLocalGame(void)
1072 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1077 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1079 qboolean fromserver;
1080 int ret, c, control;
1082 char *string, addressstring2[128], cname[128], ipstring[32];
1083 char stringbuf[16384];
1085 // quakeworld ingame packet
1086 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1088 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1090 // received a command string - strip off the packaging and put it
1091 // into our string buffer with NULL termination
1094 length = min(length, (int)sizeof(stringbuf) - 1);
1095 memcpy(stringbuf, data, length);
1096 stringbuf[length] = 0;
1099 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1101 if (developer_networking.integer)
1103 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1104 Com_HexDumpToConsole(data, length);
1107 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1109 // darkplaces or quake3
1110 char protocolnames[1400];
1111 Protocol_Names(protocolnames, sizeof(protocolnames));
1112 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1113 M_Update_Return_Reason("Got challenge response");
1114 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1115 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1116 // TODO: add userinfo stuff here instead of using NQ commands?
1117 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1120 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1122 // darkplaces or quake3
1123 M_Update_Return_Reason("Accepted");
1124 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1127 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1129 char rejectreason[32];
1130 cls.connect_trying = false;
1132 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1133 memcpy(rejectreason, string, length);
1134 rejectreason[length] = 0;
1135 M_Update_Return_Reason(rejectreason);
1138 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1140 serverlist_info_t *info;
1145 // serverlist only uses text addresses
1146 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1147 // search the cache for this server and update it
1148 for( n = 0; n < serverlist_cachecount; n++ )
1149 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1151 if( n == serverlist_cachecount ) {
1152 // LAN search doesnt require an answer from the master server so we wont
1153 // know the ping nor will it be initialized already...
1156 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1159 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1160 // store the data the engine cares about (address and ping)
1161 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1162 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1163 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1164 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1165 // if not in the slist menu we should print the server to console
1166 if (serverlist_consoleoutput) {
1167 Con_Printf("querying %s\n", ipstring);
1170 ++serverlist_cachecount;
1173 info = &serverlist_cache[n].info;
1174 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1175 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1176 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1177 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1178 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1179 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1180 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1181 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1183 if (info->ping == 100000)
1187 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1188 pingtime = bound(0, pingtime, 9999);
1189 info->ping = min(info->ping, pingtime);
1191 // legacy/old stuff move it to the menu ASAP
1193 // build description strings for the things users care about
1194 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);
1195 dpsnprintf(serverlist_cache[n].line2, sizeof(serverlist_cache[n].line2), "^5%-21.21s %-19.19s ^%c%-17.17s^5 %-20.20s", info->cname, info->game, (info->gameversion != gameversion.integer) ? '1' : '5', info->mod, info->map);
1196 if( serverlist_cache[n].query == SQS_QUERIED ) {
1197 ServerList_ViewList_Remove( &serverlist_cache[n] );
1199 // if not in the slist menu we should print the server to console (if wanted)
1200 else if( serverlist_consoleoutput )
1201 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1202 // and finally, update the view set
1203 ServerList_ViewList_Insert( &serverlist_cache[n] );
1204 serverlist_cache[n].query = SQS_QUERIED;
1208 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1210 // Extract the IP addresses
1214 if (serverlist_consoleoutput)
1215 Con_Print("received DarkPlaces server list...\n");
1216 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1220 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], data[5] * 256 + data[6]);
1221 if (serverlist_consoleoutput && developer_networking.integer)
1222 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1223 // ignore the rest of the message if the serverlist is full
1224 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1226 // also ignore it if we have already queried it (other master server response)
1227 for( n = 0 ; n < serverlist_cachecount ; n++ )
1228 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1230 if( n >= serverlist_cachecount )
1234 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1235 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_DARKPLACES7;
1236 // store the data the engine cares about (address and ping)
1237 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1238 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1239 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1241 ++serverlist_cachecount;
1244 // move on to next address in packet
1248 // begin or resume serverlist queries
1249 serverlist_querysleep = false;
1250 serverlist_querywaittime = realtime + 3;
1253 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1255 // Extract the IP addresses
1259 if (serverlist_consoleoutput)
1260 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1261 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1265 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1266 if (serverlist_consoleoutput && developer_networking.integer)
1267 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1268 // ignore the rest of the message if the serverlist is full
1269 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1271 // also ignore it if we have already queried it (other master server response)
1272 for( n = 0 ; n < serverlist_cachecount ; n++ )
1273 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1275 if( n >= serverlist_cachecount )
1279 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1280 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_QUAKEWORLD;
1281 // store the data the engine cares about (address and ping)
1282 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1283 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1284 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1286 ++serverlist_cachecount;
1289 // move on to next address in packet
1293 // begin or resume serverlist queries
1294 serverlist_querysleep = false;
1295 serverlist_querywaittime = realtime + 3;
1298 if (!strncmp(string, "ping", 4))
1300 if (developer.integer >= 10)
1302 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1303 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
1305 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1308 if (!strncmp(string, "ack", 3))
1310 // QuakeWorld compatibility
1311 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1313 // challenge message
1314 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1315 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1316 M_Update_Return_Reason("Got QuakeWorld challenge response");
1317 cls.qw_qport = qport.integer;
1318 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1319 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1320 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1323 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1326 M_Update_Return_Reason("QuakeWorld Accepted");
1327 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1330 if (length > 2 && !memcmp(string, "n\\", 2))
1332 serverlist_info_t *info;
1337 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1338 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1341 // serverlist only uses text addresses
1342 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1343 // search the cache for this server and update it
1344 for( n = 0; n < serverlist_cachecount; n++ )
1345 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1347 if( n == serverlist_cachecount ) {
1348 // LAN search doesnt require an answer from the master server so we wont
1349 // know the ping nor will it be initialized already...
1352 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1355 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1356 // store the data the engine cares about (address and ping)
1357 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1358 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1359 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1360 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1361 // if not in the slist menu we should print the server to console
1362 if (serverlist_consoleoutput) {
1363 Con_Printf("querying %s\n", ipstring);
1366 ++serverlist_cachecount;
1369 info = &serverlist_cache[n].info;
1370 strlcpy(info->game, "QuakeWorld", sizeof(info->game));;
1371 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1372 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1373 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1375 info->numplayers = 0; // updated below
1376 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1377 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1379 // count active players on server
1380 // (we could gather more info, but we're just after the number)
1381 s = strchr(string, '\n');
1385 while (s < string + length)
1387 for (;s < string + length && *s != '\n';s++)
1389 if (s >= string + length)
1396 if (info->ping == 100000)
1399 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1400 pingtime = bound(0, pingtime, 9999);
1402 info->ping = min(info->ping, pingtime);
1404 // legacy/old stuff move it to the menu ASAP
1406 // build description strings for the things users care about
1407 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);
1408 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);
1409 if( serverlist_cache[n].query == SQS_QUERIED ) {
1410 ServerList_ViewList_Remove( &serverlist_cache[n] );
1412 // if not in the slist menu we should print the server to console (if wanted)
1413 else if( serverlist_consoleoutput )
1414 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1415 // and finally, update the view set
1416 ServerList_ViewList_Insert( &serverlist_cache[n] );
1417 serverlist_cache[n].query = SQS_QUERIED;
1421 if (string[0] == 'n')
1424 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
1426 // we may not have liked the packet, but it was a command packet, so
1427 // we're done processing this packet now
1430 // quakeworld ingame packet
1431 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1434 CL_ParseServerMessage();
1437 // netquake control packets, supported for compatibility only
1438 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1443 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1447 if (developer.integer >= 10)
1448 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1449 if (cls.connect_trying)
1451 lhnetaddress_t clientportaddress;
1452 clientportaddress = *peeraddress;
1455 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
1458 LHNETADDRESS_SetPort(&clientportaddress, port);
1460 M_Update_Return_Reason("Accepted");
1461 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1462 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1463 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1464 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1468 if (developer.integer >= 10)
1469 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1470 cls.connect_trying = false;
1471 M_Update_Return_Reason((char *)data);
1473 // TODO: fix this code so that lan searches for quake servers will work
1475 case CCREP_SERVER_INFO:
1476 if (developer.integer >= 10)
1477 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1478 if (cls.state != ca_dedicated)
1480 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
1481 // string we just ignore it and keep the real address
1483 // serverlist only uses text addresses
1484 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1485 // search the cache for this server
1486 for (n = 0; n < hostCacheCount; n++)
1487 if (!strcmp(addressstring2, serverlist[n].cname))
1490 if (n == hostCacheCount && hostCacheCount < SERVERLISTSIZE)
1493 memset(&serverlist[n], 0, sizeof(serverlist[n]));
1494 strlcpy (serverlist[n].name, MSG_ReadString(), sizeof (serverlist[n].name));
1495 strlcpy (serverlist[n].map, MSG_ReadString(), sizeof (serverlist[n].map));
1496 serverlist[n].users = MSG_ReadByte();
1497 serverlist[n].maxusers = MSG_ReadByte();
1499 if (c != NET_PROTOCOL_VERSION)
1501 strlcpy (serverlist[n].cname, serverlist[n].name, sizeof (serverlist[n].cname));
1502 strcpy(serverlist[n].name, "*");
1503 strlcat (serverlist[n].name, serverlist[n].cname, sizeof(serverlist[n].name));
1505 strlcpy (serverlist[n].cname, cname, sizeof (serverlist[n].cname));
1509 case CCREP_PLAYER_INFO:
1510 // we got a CCREP_PLAYER_INFO??
1511 //if (developer.integer >= 10)
1512 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1514 case CCREP_RULE_INFO:
1515 // we got a CCREP_RULE_INFO??
1516 //if (developer.integer >= 10)
1517 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1523 // we may not have liked the packet, but it was a valid control
1524 // packet, so we're done processing this packet now
1528 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1529 CL_ParseServerMessage();
1533 void NetConn_QueryQueueFrame(void)
1539 static double querycounter = 0;
1541 if (serverlist_querysleep)
1544 // apply a cool down time after master server replies,
1545 // to avoid messing up the ping times on the servers
1546 if (serverlist_querywaittime > realtime)
1549 // each time querycounter reaches 1.0 issue a query
1550 querycounter += cl.realframetime * net_slist_queriespersecond.value;
1551 maxqueries = (int)querycounter;
1552 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1553 querycounter -= maxqueries;
1555 if( maxqueries == 0 ) {
1559 // scan serverlist and issue queries as needed
1560 serverlist_querysleep = true;
1562 timeouttime = realtime - net_slist_timeout.value;
1563 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1565 serverlist_entry_t *entry = &serverlist_cache[ index ];
1566 if( entry->query != SQS_QUERYING )
1571 serverlist_querysleep = false;
1572 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1577 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1579 lhnetaddress_t address;
1582 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1583 if (entry->protocol == PROTOCOL_QUAKEWORLD)
1585 for (socket = 0; socket < cl_numsockets ; socket++)
1586 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
1590 for (socket = 0; socket < cl_numsockets ; socket++)
1591 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1594 //entry->querytime = realtime;
1595 entry->querytime = Sys_DoubleTime();
1596 entry->querycounter++;
1598 // if not in the slist menu we should print the server to console
1599 if (serverlist_consoleoutput)
1600 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1606 entry->query = SQS_TIMEDOUT;
1611 void NetConn_ClientFrame(void)
1614 lhnetaddress_t peeraddress;
1615 NetConn_UpdateSockets();
1616 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1618 if (cls.connect_remainingtries == 0)
1619 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1620 cls.connect_nextsendtime = realtime + 1;
1621 cls.connect_remainingtries--;
1622 if (cls.connect_remainingtries <= -10)
1624 cls.connect_trying = false;
1625 M_Update_Return_Reason("Connect: Failed");
1628 // try challenge first (newer DP server or QW)
1629 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1630 // then try netquake as a fallback (old server, or netquake)
1631 SZ_Clear(&net_message);
1632 // save space for the header, filled in later
1633 MSG_WriteLong(&net_message, 0);
1634 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1635 MSG_WriteString(&net_message, "QUAKE");
1636 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1637 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1638 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1639 SZ_Clear(&net_message);
1641 for (i = 0;i < cl_numsockets;i++)
1642 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1643 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1644 NetConn_QueryQueueFrame();
1645 if (cls.netcon && realtime > cls.netcon->timeout)
1647 Con_Print("Connection timed out\n");
1649 Host_ShutdownServer ();
1653 #define MAX_CHALLENGES 128
1656 lhnetaddress_t address;
1660 challenge[MAX_CHALLENGES];
1662 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1666 for (i = 0;i < bufferlength - 1;i++)
1670 c = rand () % (127 - 33) + 33;
1671 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1677 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1679 unsigned int nb_clients = 0, i;
1682 // How many clients are there?
1683 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1684 if (svs.clients[i].active)
1687 // TODO: we should add more information for the full status string
1688 length = dpsnprintf(out_msg, out_size,
1689 "\377\377\377\377%s\x0A"
1690 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
1691 "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
1694 fullstatus ? "statusResponse" : "infoResponse",
1695 gamename, com_modname, gameversion.integer, svs.maxclients,
1696 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1697 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1698 fullstatus ? "\n" : "");
1700 // Make sure it fits in the buffer
1709 ptr = out_msg + length;
1710 left = (int)out_size - length;
1712 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1714 client_t *cl = &svs.clients[i];
1717 int nameind, cleanind;
1719 char cleanname [sizeof(cl->name)];
1721 // Remove all characters '"' and '\' in the player name
1726 curchar = cl->name[nameind++];
1727 if (curchar != '"' && curchar != '\\')
1729 cleanname[cleanind++] = curchar;
1730 if (cleanind == sizeof(cleanname) - 1)
1733 } while (curchar != '\0');
1735 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1737 (int)(cl->ping * 1000.0f),
1750 extern void SV_SendServerinfo (client_t *client);
1751 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1753 int i, ret, clientnum, best;
1757 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1759 // see if we can identify the sender as a local player
1760 // (this is necessary for rcon to send a reliable reply if the client is
1761 // actually on the server, not sending remotely)
1762 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1763 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1765 if (i == svs.maxclients)
1770 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1772 // received a command string - strip off the packaging and put it
1773 // into our string buffer with NULL termination
1776 length = min(length, (int)sizeof(stringbuf) - 1);
1777 memcpy(stringbuf, data, length);
1778 stringbuf[length] = 0;
1781 if (developer.integer >= 10)
1783 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1784 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1785 Com_HexDumpToConsole(data, length);
1788 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1790 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1792 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1794 if (besttime > challenge[i].time)
1795 besttime = challenge[best = i].time;
1797 // if we did not find an exact match, choose the oldest and
1798 // update address and string
1799 if (i == MAX_CHALLENGES)
1802 challenge[i].address = *peeraddress;
1803 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1805 challenge[i].time = realtime;
1806 // send the challenge
1807 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1810 if (length > 8 && !memcmp(string, "connect\\", 8))
1814 if ((s = SearchInfostring(string, "challenge")))
1816 // validate the challenge
1817 for (i = 0;i < MAX_CHALLENGES;i++)
1818 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1820 if (i < MAX_CHALLENGES)
1822 // check engine protocol
1823 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1825 if (developer.integer >= 10)
1826 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1827 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1831 // see if this is a duplicate connection request
1832 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1833 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1835 if (clientnum < svs.maxclients && realtime - client->connecttime < net_messagerejointimeout.value)
1837 // client is still trying to connect,
1838 // so we send a duplicate reply
1839 if (developer.integer >= 10)
1840 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1841 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1844 else if (clientnum < svs.maxclients)
1846 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1848 // client crashed and is coming back, keep their stuff intact
1849 SV_SendServerinfo(client);
1850 //host_client = client;
1851 //SV_DropClient (true);
1858 // this is a new client, find a slot
1859 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1860 if (!client->active)
1862 if (clientnum < svs.maxclients)
1864 // prepare the client struct
1865 if ((conn = NetConn_Open(mysocket, peeraddress)))
1867 // allocated connection
1868 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1869 if (developer.integer >= 10)
1870 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1871 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1872 // now set up the client
1874 SV_ConnectClient(clientnum, conn);
1876 NetConn_Heartbeat(1);
1882 if (developer.integer >= 10)
1883 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1884 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1892 if (length >= 7 && !memcmp(string, "getinfo", 7))
1894 const char *challenge = NULL;
1896 // If there was a challenge in the getinfo message
1897 if (length > 8 && string[7] == ' ')
1898 challenge = string + 8;
1900 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1902 if (developer.integer >= 10)
1903 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1904 NetConn_WriteString(mysocket, response, peeraddress);
1908 if (length >= 9 && !memcmp(string, "getstatus", 9))
1910 const char *challenge = NULL;
1912 // If there was a challenge in the getinfo message
1913 if (length > 10 && string[9] == ' ')
1914 challenge = string + 10;
1916 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1918 if (developer.integer >= 10)
1919 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1920 NetConn_WriteString(mysocket, response, peeraddress);
1924 if (length >= 5 && !memcmp(string, "rcon ", 5))
1927 char *s = string + 5;
1929 for (i = 0;*s > ' ';s++)
1930 if (i < (int)sizeof(password) - 1)
1933 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
1935 // looks like a legitimate rcon command with the correct password
1936 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
1937 rcon_redirect = true;
1938 rcon_redirect_bufferpos = 0;
1939 Cmd_ExecuteString(s, src_command);
1940 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
1941 rcon_redirect = false;
1942 // print resulting text to client
1943 // if client is playing, send a reliable reply instead of
1947 // if the netconnection is loop, then this is the
1948 // local player on a listen mode server, and it would
1949 // result in duplicate printing to the console
1950 // (not that the local player should be using rcon
1951 // when they have the console)
1952 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
1953 SV_ClientPrintf("%s", rcon_redirect_buffer);
1958 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
1959 NetConn_WriteString(mysocket, response, peeraddress);
1965 if (!strncmp(string, "ping", 4))
1967 if (developer.integer >= 10)
1968 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1969 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1972 if (!strncmp(string, "ack", 3))
1975 // we may not have liked the packet, but it was a command packet, so
1976 // we're done processing this packet now
1979 // LordHavoc: disabled netquake control packet support in server
1983 // netquake control packets, supported for compatibility only
1984 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1989 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1993 if (developer.integer >= 10)
1994 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
1995 if (length >= (int)strlen("QUAKE") + 1 + 1)
1997 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
1999 if (developer.integer >= 10)
2000 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
2001 SZ_Clear(&net_message);
2002 // save space for the header, filled in later
2003 MSG_WriteLong(&net_message, 0);
2004 MSG_WriteByte(&net_message, CCREP_REJECT);
2005 MSG_WriteString(&net_message, "Incompatible version.\n");
2006 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2007 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2008 SZ_Clear(&net_message);
2012 // see if this is a duplicate connection request
2013 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2014 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2016 if (clientnum < svs.maxclients)
2018 // duplicate connection request
2019 if (realtime - client->connecttime < 2.0)
2021 // client is still trying to connect,
2022 // so we send a duplicate reply
2023 if (developer.integer >= 10)
2024 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
2025 SZ_Clear(&net_message);
2026 // save space for the header, filled in later
2027 MSG_WriteLong(&net_message, 0);
2028 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2029 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
2030 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2031 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2032 SZ_Clear(&net_message);
2035 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
2037 SV_SendServerinfo(client);
2038 // the old client hasn't sent us anything
2039 // in quite a while, so kick off and let
2040 // the retry take care of it...
2041 //host_client = client;
2042 //SV_DropClient (true);
2048 // this is a new client, find a slot
2049 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2050 if (!client->active)
2052 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
2054 // connect to the client
2055 // everything is allocated, just fill in the details
2056 strlcpy (conn->address, addressstring2, sizeof (conn->address));
2057 if (developer.integer >= 10)
2058 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
2059 // send back the info about the server connection
2060 SZ_Clear(&net_message);
2061 // save space for the header, filled in later
2062 MSG_WriteLong(&net_message, 0);
2063 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2064 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
2065 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2066 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2067 SZ_Clear(&net_message);
2068 // now set up the client struct
2070 SV_ConnectClient(clientnum, conn);
2072 NetConn_Heartbeat(1);
2076 if (developer.integer >= 10)
2077 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
2078 // no room; try to let player know
2079 SZ_Clear(&net_message);
2080 // save space for the header, filled in later
2081 MSG_WriteLong(&net_message, 0);
2082 MSG_WriteByte(&net_message, CCREP_REJECT);
2083 MSG_WriteString(&net_message, "Server is full.\n");
2084 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2085 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2086 SZ_Clear(&net_message);
2093 case CCREQ_SERVER_INFO:
2094 if (developer.integer >= 10)
2095 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
2096 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
2098 if (developer.integer >= 10)
2099 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
2100 SZ_Clear(&net_message);
2101 // save space for the header, filled in later
2102 MSG_WriteLong(&net_message, 0);
2103 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
2104 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
2105 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
2106 MSG_WriteString(&net_message, hostname.string);
2107 MSG_WriteString(&net_message, sv.name);
2108 MSG_WriteByte(&net_message, net_activeconnections);
2109 MSG_WriteByte(&net_message, svs.maxclients);
2110 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2111 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2112 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2113 SZ_Clear(&net_message);
2116 case CCREQ_PLAYER_INFO:
2117 if (developer.integer >= 10)
2118 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
2121 int playerNumber, activeNumber, clientNumber;
2124 playerNumber = MSG_ReadByte();
2126 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
2127 if (client->active && ++activeNumber == playerNumber)
2129 if (clientNumber != svs.maxclients)
2131 SZ_Clear(&net_message);
2132 // save space for the header, filled in later
2133 MSG_WriteLong(&net_message, 0);
2134 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
2135 MSG_WriteByte(&net_message, playerNumber);
2136 MSG_WriteString(&net_message, client->name);
2137 MSG_WriteLong(&net_message, client->colors);
2138 MSG_WriteLong(&net_message, (int)client->edict->fields.server->frags);
2139 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
2140 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
2141 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2142 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2143 SZ_Clear(&net_message);
2147 case CCREQ_RULE_INFO:
2148 if (developer.integer >= 10)
2149 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
2155 // find the search start location
2156 prevCvarName = MSG_ReadString();
2157 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
2159 // send the response
2160 SZ_Clear(&net_message);
2161 // save space for the header, filled in later
2162 MSG_WriteLong(&net_message, 0);
2163 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
2166 MSG_WriteString(&net_message, var->name);
2167 MSG_WriteString(&net_message, var->string);
2169 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2170 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2171 SZ_Clear(&net_message);
2178 // we may not have liked the packet, but it was a valid control
2179 // packet, so we're done processing this packet now
2186 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol)) == 2)
2189 SV_ReadClientMessage();
2198 void NetConn_ServerFrame(void)
2201 lhnetaddress_t peeraddress;
2202 for (i = 0;i < sv_numsockets;i++)
2203 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2204 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2205 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2207 // never timeout loopback connections
2208 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2210 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2212 SV_DropClient(false);
2218 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
2222 lhnetaddress_t masteraddress;
2223 lhnetaddress_t broadcastaddress;
2226 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2229 // 26000 is the default quake server port, servers on other ports will not
2231 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2232 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2236 for (i = 0;i < cl_numsockets;i++)
2240 // search LAN for Quake servers
2241 SZ_Clear(&net_message);
2242 // save space for the header, filled in later
2243 MSG_WriteLong(&net_message, 0);
2244 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2245 MSG_WriteString(&net_message, "QUAKE");
2246 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2247 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2248 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2249 SZ_Clear(&net_message);
2251 // search LAN for DarkPlaces servers
2252 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2254 // build the getservers message to send to the dpmaster master servers
2255 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2258 for (masternum = 0;sv_masters[masternum].name;masternum++)
2260 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2263 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2270 // only query QuakeWorld servers when the user wants to
2273 for (i = 0;i < cl_numsockets;i++)
2277 // search LAN for QuakeWorld servers
2278 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
2280 // build the getservers message to send to the qwmaster master servers
2281 // note this has no -1 prefix, and the trailing nul byte is sent
2282 dpsnprintf(request, sizeof(request), "c\n");
2285 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
2287 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2289 if (m_state != m_slist)
2291 char lookupstring[128];
2292 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
2293 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
2296 NetConn_Write(cl_sockets[i], request, strlen(request) + 1, &masteraddress);
2302 if (!masterquerycount)
2304 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2305 M_Update_Return_Reason("No network");
2309 void NetConn_Heartbeat(int priority)
2311 lhnetaddress_t masteraddress;
2313 lhnetsocket_t *mysocket;
2315 // if it's a state change (client connected), limit next heartbeat to no
2316 // more than 30 sec in the future
2317 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2318 nextheartbeattime = realtime + 30.0;
2320 // limit heartbeatperiod to 30 to 270 second range,
2321 // lower limit is to avoid abusing master servers with excess traffic,
2322 // upper limit is to avoid timing out on the master server (which uses
2324 if (sv_heartbeatperiod.value < 30)
2325 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2326 if (sv_heartbeatperiod.value > 270)
2327 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2329 // make advertising optional and don't advertise singleplayer games, and
2330 // only send a heartbeat as often as the admin wants
2331 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2333 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2334 for (masternum = 0;sv_masters[masternum].name;masternum++)
2335 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2336 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2340 static void Net_Heartbeat_f(void)
2343 NetConn_Heartbeat(2);
2345 Con_Print("No server running, can not heartbeat to master server.\n");
2348 void PrintStats(netconn_t *conn)
2350 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2351 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2353 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2356 void Net_Stats_f(void)
2359 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2360 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2361 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2362 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2363 Con_Printf("packetsSent = %i\n", packetsSent);
2364 Con_Printf("packetsReSent = %i\n", packetsReSent);
2365 Con_Printf("packetsReceived = %i\n", packetsReceived);
2366 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2367 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2368 Con_Print("connections =\n");
2369 for (conn = netconn_list;conn;conn = conn->next)
2373 void Net_Slist_f(void)
2375 ServerList_ResetMasks();
2376 serverlist_sortbyfield = SLIF_PING;
2377 serverlist_sortdescending = false;
2378 if (m_state != m_slist) {
2379 Con_Print("Sending requests to master servers\n");
2380 ServerList_QueryList(true, false);
2381 serverlist_consoleoutput = true;
2382 Con_Print("Listening for replies...\n");
2384 ServerList_QueryList(true, false);
2387 void Net_SlistQW_f(void)
2389 ServerList_ResetMasks();
2390 serverlist_sortbyfield = SLIF_PING;
2391 serverlist_sortdescending = false;
2392 if (m_state != m_slist) {
2393 Con_Print("Sending requests to master servers\n");
2394 ServerList_QueryList(false, true);
2395 serverlist_consoleoutput = true;
2396 Con_Print("Listening for replies...\n");
2398 ServerList_QueryList(false, true);
2401 void NetConn_Init(void)
2404 lhnetaddress_t tempaddress;
2405 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2406 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2407 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
2408 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
2409 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2410 Cvar_RegisterVariable(&net_slist_queriespersecond);
2411 Cvar_RegisterVariable(&net_slist_queriesperframe);
2412 Cvar_RegisterVariable(&net_slist_timeout);
2413 Cvar_RegisterVariable(&net_slist_maxtries);
2414 Cvar_RegisterVariable(&net_messagetimeout);
2415 Cvar_RegisterVariable(&net_messagerejointimeout);
2416 Cvar_RegisterVariable(&net_connecttimeout);
2417 Cvar_RegisterVariable(&cl_netlocalping);
2418 Cvar_RegisterVariable(&cl_netpacketloss);
2419 Cvar_RegisterVariable(&hostname);
2420 Cvar_RegisterVariable(&developer_networking);
2421 Cvar_RegisterVariable(&cl_netport);
2422 Cvar_RegisterVariable(&sv_netport);
2423 Cvar_RegisterVariable(&net_address);
2424 //Cvar_RegisterVariable(&net_address_ipv6);
2425 Cvar_RegisterVariable(&sv_public);
2426 Cvar_RegisterVariable(&sv_heartbeatperiod);
2427 for (i = 0;sv_masters[i].name;i++)
2428 Cvar_RegisterVariable(&sv_masters[i]);
2429 Cvar_RegisterVariable(&gameversion);
2430 // 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.
2431 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2433 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2435 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
2436 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2439 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2441 // 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
2442 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2444 i = atoi(com_argv[i + 1]);
2445 if (i >= 0 && i < 65536)
2447 Con_Printf("-port option used, setting port cvar to %i\n", i);
2448 Cvar_SetValueQuick(&sv_netport, i);
2451 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2455 net_message.data = net_message_buf;
2456 net_message.maxsize = sizeof(net_message_buf);
2457 net_message.cursize = 0;
2461 void NetConn_Shutdown(void)
2463 NetConn_CloseClientPorts();
2464 NetConn_CloseServerPorts();