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 )
212 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
214 // This should actually be done with some intermediate and end-of-function return
226 case SLMO_GREATEREQUAL:
228 case SLMO_NOTCONTAIN:
231 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
236 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
239 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
240 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
241 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
243 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
244 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
247 // Same here, also using an intermediate & final return would be more appropriate
251 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
252 case SLMO_NOTCONTAIN:
253 return !*bufferB || !strstr( bufferA, bufferB );
255 return strcmp( bufferA, bufferB ) < 0;
257 return strcmp( bufferA, bufferB ) <= 0;
259 return strcmp( bufferA, bufferB ) == 0;
261 return strcmp( bufferA, bufferB ) > 0;
263 return strcmp( bufferA, bufferB ) != 0;
264 case SLMO_GREATEREQUAL:
265 return strcmp( bufferA, bufferB ) >= 0;
267 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
272 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
274 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
276 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
278 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
280 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
282 if( *mask->info.cname
283 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
286 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
289 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
292 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
295 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
300 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
304 // reject incompatible servers
305 if (entry->info.gameversion != gameversion.integer)
308 // FIXME: change this to be more readable (...)
309 // now check whether it passes through the masks
310 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
311 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
314 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
315 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
317 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
320 if( !serverlist_viewcount ) {
321 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
324 // ok, insert it, we just need to find out where exactly:
327 // check whether to insert it as new first item
328 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
329 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
331 } // check whether to insert it as new last item
332 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
333 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
337 end = serverlist_viewcount - 1;
338 while( end > start + 1 )
340 mid = (start + end) / 2;
341 // test the item that lies in the middle between start and end
342 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
343 // the item has to be in the upper half
346 // the item has to be in the lower half
349 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
352 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
355 for( i = 0; i < serverlist_viewcount; i++ )
357 if (serverlist_viewlist[i] == entry)
359 _ServerList_ViewList_Helper_Remove(i);
365 void ServerList_RebuildViewList(void)
369 serverlist_viewcount = 0;
370 for( i = 0 ; i < serverlist_cachecount ; i++ )
371 if( serverlist_cache[i].query == SQS_QUERIED )
372 ServerList_ViewList_Insert( &serverlist_cache[i] );
375 void ServerList_ResetMasks(void)
377 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
378 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
382 static void _ServerList_Test(void)
385 for( i = 0 ; i < 1024 ; i++ ) {
386 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
387 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
388 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
389 serverlist_cache[serverlist_cachecount].finished = true;
390 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
391 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
392 serverlist_cachecount++;
397 void ServerList_QueryList(qboolean querydp, qboolean queryqw)
399 //masterquerytime = realtime;
400 masterquerytime = Sys_DoubleTime();
401 masterquerycount = 0;
402 masterreplycount = 0;
403 serverquerycount = 0;
404 serverreplycount = 0;
405 serverlist_cachecount = 0;
406 serverlist_viewcount = 0;
407 serverlist_consoleoutput = false;
409 //_ServerList_Test();
411 NetConn_QueryMasters(querydp, queryqw);
416 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
418 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
422 if (cl_netpacketloss.integer)
423 for (i = 0;i < cl_numsockets;i++)
424 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
426 if (developer_networking.integer)
428 char addressstring[128], addressstring2[128];
429 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
432 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
433 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
434 Com_HexDumpToConsole((unsigned char *)data, length);
437 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
442 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
446 if (cl_netpacketloss.integer)
447 for (i = 0;i < cl_numsockets;i++)
448 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
450 ret = LHNET_Write(mysocket, data, length, peeraddress);
451 if (developer_networking.integer)
453 char addressstring[128], addressstring2[128];
454 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
455 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
456 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
457 Com_HexDumpToConsole((unsigned char *)data, length);
462 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
464 // note this does not include the trailing NULL because we add that in the parser
465 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
468 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol)
470 if (protocol == PROTOCOL_QUAKEWORLD)
473 qboolean sendreliable;
475 // note that it is ok to send empty messages to the qw server,
476 // otherwise it won't respond to us at all
478 sendreliable = false;
479 // if the remote side dropped the last reliable message, resend it
480 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
482 // if the reliable transmit buffer is empty, copy the current message out
483 if (!conn->sendMessageLength && conn->message.cursize)
485 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
486 conn->sendMessageLength = conn->message.cursize;
487 SZ_Clear(&conn->message); // clear the message buffer
488 conn->qw.reliable_sequence ^= 1;
491 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
492 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
493 // last received unreliable packet number, and last received reliable packet number (0 or 1)
494 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
496 conn->qw.outgoing_sequence++;
497 // client sends qport in every packet
498 if (conn == cls.netcon)
500 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
503 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
505 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
508 // add the reliable message if there is one
511 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
512 packetLen += conn->sendMessageLength;
513 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
515 // add the unreliable message if possible
516 if (packetLen + data->cursize <= 1400)
518 memcpy(sendbuffer + packetLen, data->data, data->cursize);
519 packetLen += data->cursize;
522 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
525 unreliableMessagesSent++;
527 // delay later packets to obey rate limit
528 conn->qw.cleartime = max(conn->qw.cleartime, realtime) + packetLen * conn->qw.rate;
534 unsigned int packetLen;
535 unsigned int dataLen;
537 unsigned int *header;
539 // if a reliable message fragment has been lost, send it again
540 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
542 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
544 dataLen = conn->sendMessageLength;
549 dataLen = MAX_PACKETFRAGMENT;
553 packetLen = NET_HEADERSIZE + dataLen;
555 header = (unsigned int *)sendbuffer;
556 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
557 header[1] = BigLong(conn->nq.sendSequence - 1);
558 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
560 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
562 conn->lastSendTime = realtime;
567 // if we have a new reliable message to send, do so
568 if (!conn->sendMessageLength && conn->message.cursize)
570 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
572 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, sizeof(conn->sendMessage));
573 conn->message.overflowed = true;
577 if (developer_networking.integer && conn == cls.netcon)
579 Con_Print("client sending reliable message to server:\n");
580 SZ_HexDumpToConsole(&conn->message);
583 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
584 conn->sendMessageLength = conn->message.cursize;
585 SZ_Clear(&conn->message);
587 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
589 dataLen = conn->sendMessageLength;
594 dataLen = MAX_PACKETFRAGMENT;
598 packetLen = NET_HEADERSIZE + dataLen;
600 header = (unsigned int *)sendbuffer;
601 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
602 header[1] = BigLong(conn->nq.sendSequence);
603 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
605 conn->nq.sendSequence++;
607 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
609 conn->lastSendTime = realtime;
611 reliableMessagesSent++;
614 // if we have an unreliable message to send, do so
617 packetLen = NET_HEADERSIZE + data->cursize;
619 if (packetLen > (int)sizeof(sendbuffer))
621 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
625 header = (unsigned int *)sendbuffer;
626 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
627 header[1] = BigLong(conn->nq.unreliableSendSequence);
628 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
630 conn->nq.unreliableSendSequence++;
632 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
635 unreliableMessagesSent++;
641 void NetConn_CloseClientPorts(void)
643 for (;cl_numsockets > 0;cl_numsockets--)
644 if (cl_sockets[cl_numsockets - 1])
645 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
648 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
650 lhnetaddress_t address;
652 char addressstring2[1024];
653 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
655 if ((s = LHNET_OpenSocket_Connectionless(&address)))
657 cl_sockets[cl_numsockets++] = s;
658 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
659 Con_Printf("Client opened a socket on address %s\n", addressstring2);
663 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
664 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
668 Con_Printf("Client unable to parse address %s\n", addressstring);
671 void NetConn_OpenClientPorts(void)
674 NetConn_CloseClientPorts();
675 port = bound(0, cl_netport.integer, 65535);
676 if (cl_netport.integer != port)
677 Cvar_SetValueQuick(&cl_netport, port);
678 Con_Printf("Client using port %i\n", port);
679 NetConn_OpenClientPort("local:2", 0);
680 NetConn_OpenClientPort(net_address.string, port);
681 //NetConn_OpenClientPort(net_address_ipv6.string, port);
684 void NetConn_CloseServerPorts(void)
686 for (;sv_numsockets > 0;sv_numsockets--)
687 if (sv_sockets[sv_numsockets - 1])
688 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
691 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
693 lhnetaddress_t address;
696 char addressstring2[1024];
698 for (port = defaultport; port <= defaultport + 100; port++)
700 if (LHNETADDRESS_FromString(&address, addressstring, port))
702 if ((s = LHNET_OpenSocket_Connectionless(&address)))
704 sv_sockets[sv_numsockets++] = s;
705 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
706 Con_Printf("Server listening on address %s\n", addressstring2);
711 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
712 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
717 Con_Printf("Server unable to parse address %s\n", addressstring);
718 // if it cant parse one address, it wont be able to parse another for sure
724 void NetConn_OpenServerPorts(int opennetports)
727 NetConn_CloseServerPorts();
728 NetConn_UpdateSockets();
729 port = bound(0, sv_netport.integer, 65535);
732 Con_Printf("Server using port %i\n", port);
733 if (sv_netport.integer != port)
734 Cvar_SetValueQuick(&sv_netport, port);
735 if (cls.state != ca_dedicated)
736 NetConn_OpenServerPort("local:1", 0);
739 NetConn_OpenServerPort(net_address.string, port);
740 //NetConn_OpenServerPort(net_address_ipv6.string, port);
742 if (sv_numsockets == 0)
743 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
746 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
748 int i, a = LHNETADDRESS_GetAddressType(address);
749 for (i = 0;i < cl_numsockets;i++)
750 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
751 return cl_sockets[i];
755 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
757 int i, a = LHNETADDRESS_GetAddressType(address);
758 for (i = 0;i < sv_numsockets;i++)
759 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
760 return sv_sockets[i];
764 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
767 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
768 conn->mysocket = mysocket;
769 conn->peeraddress = *peeraddress;
770 conn->lastMessageTime = realtime;
771 conn->message.data = conn->messagedata;
772 conn->message.maxsize = sizeof(conn->messagedata);
773 conn->message.cursize = 0;
774 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
775 // reduce effectiveness of connection request floods
776 conn->timeout = realtime + net_connecttimeout.value;
777 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
778 conn->next = netconn_list;
783 void NetConn_Close(netconn_t *conn)
786 // remove connection from list
787 if (conn == netconn_list)
788 netconn_list = conn->next;
791 for (c = netconn_list;c;c = c->next)
795 c->next = conn->next;
799 // not found in list, we'll avoid crashing here...
807 static int clientport = -1;
808 static int clientport2 = -1;
809 static int hostport = -1;
810 void NetConn_UpdateSockets(void)
812 if (cls.state != ca_dedicated)
814 if (clientport2 != cl_netport.integer)
816 clientport2 = cl_netport.integer;
817 if (cls.state == ca_connected)
818 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
820 if (cls.state == ca_disconnected && clientport != clientport2)
822 clientport = clientport2;
823 NetConn_CloseClientPorts();
825 if (cl_numsockets == 0)
826 NetConn_OpenClientPorts();
829 if (hostport != sv_netport.integer)
831 hostport = sv_netport.integer;
833 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
837 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol)
842 if (protocol == PROTOCOL_QUAKEWORLD)
844 int sequence, sequence_ack;
845 int reliable_ack, reliable_message;
849 sequence = LittleLong(*((int *)(data + 0)));
850 sequence_ack = LittleLong(*((int *)(data + 4)));
854 if (conn != cls.netcon)
859 // 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?)
860 qport = LittleShort(*((int *)(data + 8)));
866 reliable_message = (sequence >> 31) & 1;
867 reliable_ack = (sequence_ack >> 31) & 1;
868 sequence &= ~(1<<31);
869 sequence_ack &= ~(1<<31);
870 if (sequence <= conn->qw.incoming_sequence)
872 Con_DPrint("Got a stale datagram\n");
875 count = sequence - (conn->qw.incoming_sequence + 1);
878 droppedDatagrams += count;
879 Con_DPrintf("Dropped %u datagram(s)\n", count);
881 if (reliable_ack == conn->qw.reliable_sequence)
883 // received, now we will be able to send another reliable message
884 conn->sendMessageLength = 0;
885 reliableMessagesReceived++;
887 conn->qw.incoming_sequence = sequence;
888 conn->qw.incoming_acknowledged = sequence_ack;
889 conn->qw.incoming_reliable_acknowledged = reliable_ack;
890 if (reliable_message)
891 conn->qw.incoming_reliable_sequence ^= 1;
892 conn->lastMessageTime = realtime;
893 conn->timeout = realtime + net_messagetimeout.value;
894 unreliableMessagesReceived++;
895 SZ_Clear(&net_message);
896 SZ_Write(&net_message, data, length);
904 unsigned int sequence;
907 qlength = (unsigned int)BigLong(((int *)data)[0]);
908 flags = qlength & ~NETFLAG_LENGTH_MASK;
909 qlength &= NETFLAG_LENGTH_MASK;
910 // control packets were already handled
911 if (!(flags & NETFLAG_CTL) && qlength == length)
913 sequence = BigLong(((int *)data)[1]);
917 if (flags & NETFLAG_UNRELIABLE)
919 if (sequence >= conn->nq.unreliableReceiveSequence)
921 if (sequence > conn->nq.unreliableReceiveSequence)
923 count = sequence - conn->nq.unreliableReceiveSequence;
924 droppedDatagrams += count;
925 Con_DPrintf("Dropped %u datagram(s)\n", count);
927 conn->nq.unreliableReceiveSequence = sequence + 1;
928 conn->lastMessageTime = realtime;
929 conn->timeout = realtime + net_messagetimeout.value;
930 unreliableMessagesReceived++;
933 SZ_Clear(&net_message);
934 SZ_Write(&net_message, data, length);
940 Con_DPrint("Got a stale datagram\n");
943 else if (flags & NETFLAG_ACK)
945 if (sequence == (conn->nq.sendSequence - 1))
947 if (sequence == conn->nq.ackSequence)
949 conn->nq.ackSequence++;
950 if (conn->nq.ackSequence != conn->nq.sendSequence)
951 Con_DPrint("ack sequencing error\n");
952 conn->lastMessageTime = realtime;
953 conn->timeout = realtime + net_messagetimeout.value;
954 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
956 unsigned int packetLen;
957 unsigned int dataLen;
959 unsigned int *header;
961 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
962 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
964 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
966 dataLen = conn->sendMessageLength;
971 dataLen = MAX_PACKETFRAGMENT;
975 packetLen = NET_HEADERSIZE + dataLen;
977 header = (unsigned int *)sendbuffer;
978 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
979 header[1] = BigLong(conn->nq.sendSequence);
980 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
982 conn->nq.sendSequence++;
984 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
986 conn->lastSendTime = realtime;
991 conn->sendMessageLength = 0;
994 Con_DPrint("Duplicate ACK received\n");
997 Con_DPrint("Stale ACK received\n");
1000 else if (flags & NETFLAG_DATA)
1002 unsigned int temppacket[2];
1003 temppacket[0] = BigLong(8 | NETFLAG_ACK);
1004 temppacket[1] = BigLong(sequence);
1005 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
1006 if (sequence == conn->nq.receiveSequence)
1008 conn->lastMessageTime = realtime;
1009 conn->timeout = realtime + net_messagetimeout.value;
1010 conn->nq.receiveSequence++;
1011 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1012 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1013 conn->receiveMessageLength += length;
1015 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1016 "Dropping the message!\n", sequence );
1017 conn->receiveMessageLength = 0;
1020 if (flags & NETFLAG_EOM)
1022 reliableMessagesReceived++;
1023 length = conn->receiveMessageLength;
1024 conn->receiveMessageLength = 0;
1027 SZ_Clear(&net_message);
1028 SZ_Write(&net_message, conn->receiveMessage, length);
1035 receivedDuplicateCount++;
1043 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1045 cls.connect_trying = false;
1046 M_Update_Return_Reason("");
1047 // the connection request succeeded, stop current connection and set up a new connection
1049 // if we're connecting to a remote server, shut down any local server
1050 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1051 Host_ShutdownServer ();
1052 // allocate a net connection to keep track of things
1053 cls.netcon = NetConn_Open(mysocket, peeraddress);
1054 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1055 key_dest = key_game;
1057 cls.demonum = -1; // not in the demo loop now
1058 cls.state = ca_connected;
1059 cls.signon = 0; // need all the signon messages before playing
1060 cls.protocol = initialprotocol;
1061 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1062 Cmd_ForwardStringToServer("new");
1065 int NetConn_IsLocalGame(void)
1067 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1072 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1074 qboolean fromserver;
1075 int ret, c, control;
1077 char *string, addressstring2[128], cname[128], ipstring[32];
1078 char stringbuf[16384];
1080 // quakeworld ingame packet
1081 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1083 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1085 // received a command string - strip off the packaging and put it
1086 // into our string buffer with NULL termination
1089 length = min(length, (int)sizeof(stringbuf) - 1);
1090 memcpy(stringbuf, data, length);
1091 stringbuf[length] = 0;
1094 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1096 if (developer_networking.integer)
1098 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1099 Com_HexDumpToConsole(data, length);
1102 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1104 // darkplaces or quake3
1105 char protocolnames[1400];
1106 Protocol_Names(protocolnames, sizeof(protocolnames));
1107 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1108 M_Update_Return_Reason("Got challenge response");
1109 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1112 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')))
1115 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1116 Con_Printf("\"%s\" received, sending QuakeWorld connect request back to %s\n", string, addressstring2);
1117 M_Update_Return_Reason("Got QuakeWorld challenge response");
1118 cls.qw_qport = qport.integer;
1119 NetConn_WriteString(mysocket, va("\377\377\377\377connect 28 %i %i \"%s\"\n", cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1121 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1123 // darkplaces or quake3
1124 M_Update_Return_Reason("Accepted");
1125 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1128 if (length > 1 && string[0] == 'j' && cls.connect_trying)
1131 M_Update_Return_Reason("QuakeWorld Accepted");
1132 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1135 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1137 char rejectreason[32];
1138 cls.connect_trying = false;
1140 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1141 memcpy(rejectreason, string, length);
1142 rejectreason[length] = 0;
1143 M_Update_Return_Reason(rejectreason);
1146 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1148 serverlist_info_t *info;
1153 // serverlist only uses text addresses
1154 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1155 // search the cache for this server and update it
1156 for( n = 0; n < serverlist_cachecount; n++ )
1157 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1159 if( n == serverlist_cachecount ) {
1160 // LAN search doesnt require an answer from the master server so we wont
1161 // know the ping nor will it be initialized already...
1164 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1167 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1168 // store the data the engine cares about (address and ping)
1169 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1170 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1171 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1172 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1173 // if not in the slist menu we should print the server to console
1174 if (serverlist_consoleoutput) {
1175 Con_Printf("querying %s\n", ipstring);
1178 ++serverlist_cachecount;
1181 info = &serverlist_cache[n].info;
1182 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1183 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1184 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1185 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1186 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1187 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1188 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1189 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1191 if (info->ping == 100000)
1194 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1195 pingtime = bound(0, pingtime, 9999);
1197 info->ping = (int)pingtime;
1199 // legacy/old stuff move it to the menu ASAP
1201 // build description strings for the things users care about
1202 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", pingtime >= 300 ? '1' : (pingtime >= 200 ? '3' : '7'), (int)pingtime, ((info->numplayers > 0 && info->numplayers < info->maxplayers) ? (info->numplayers >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1203 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);
1204 if( serverlist_cache[n].query == SQS_QUERIED ) {
1205 ServerList_ViewList_Remove( &serverlist_cache[n] );
1207 // if not in the slist menu we should print the server to console (if wanted)
1208 else if( serverlist_consoleoutput )
1209 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1210 // and finally, update the view set
1211 ServerList_ViewList_Insert( &serverlist_cache[n] );
1212 serverlist_cache[n].query = SQS_QUERIED;
1216 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1218 // Extract the IP addresses
1222 if (serverlist_consoleoutput)
1223 Con_Print("received DarkPlaces server list...\n");
1224 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1228 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], data[5] * 256 + data[6]);
1229 if (serverlist_consoleoutput && developer_networking.integer)
1230 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1231 // ignore the rest of the message if the serverlist is full
1232 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1234 // also ignore it if we have already queried it (other master server response)
1235 for( n = 0 ; n < serverlist_cachecount ; n++ )
1236 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1238 if( n >= serverlist_cachecount )
1242 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1243 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_DARKPLACES7;
1244 // store the data the engine cares about (address and ping)
1245 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1246 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1247 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1249 ++serverlist_cachecount;
1252 // move on to next address in packet
1256 // begin or resume serverlist queries
1257 serverlist_querysleep = false;
1258 serverlist_querywaittime = realtime + 3;
1261 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1263 // Extract the IP addresses
1267 if (serverlist_consoleoutput)
1268 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1269 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1273 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1274 if (serverlist_consoleoutput && developer_networking.integer)
1275 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1276 // ignore the rest of the message if the serverlist is full
1277 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1279 // also ignore it if we have already queried it (other master server response)
1280 for( n = 0 ; n < serverlist_cachecount ; n++ )
1281 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1283 if( n >= serverlist_cachecount )
1287 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1288 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_QUAKEWORLD;
1289 // store the data the engine cares about (address and ping)
1290 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1291 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1292 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1294 ++serverlist_cachecount;
1297 // move on to next address in packet
1301 // begin or resume serverlist queries
1302 serverlist_querysleep = false;
1303 serverlist_querywaittime = realtime + 3;
1307 if (!strncmp(string, "ping", 4))
1309 if (developer.integer >= 10)
1310 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1311 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1314 if (!strncmp(string, "ack", 3))
1317 // QuakeWorld compatibility
1318 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1321 M_Update_Return_Reason("Accepted");
1322 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1325 if (length > 1 && string[0] == 'c' && string[1] >= '0' && string[1] <= '9' && cls.connect_trying)
1327 // challenge message
1328 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1329 Con_Printf("challenge %s received, sending connect request back to %s\n", string + 1, addressstring2);
1330 M_Update_Return_Reason("Got challenge response");
1331 cls.qw_qport = qport.integer;
1332 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1333 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "name", cl_name.string);
1334 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "topcolor", va("%i", (cl_color.integer >> 4) & 15));
1335 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "bottomcolor", va("%i", (cl_color.integer) & 15));
1336 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "rate", va("%i", cl_rate.integer));
1337 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "msg", "1");
1338 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ver", engineversion);
1339 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1342 if (length > 2 && !memcmp(string, "n\\", 2))
1344 serverlist_info_t *info;
1349 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1350 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1353 // serverlist only uses text addresses
1354 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1355 // search the cache for this server and update it
1356 for( n = 0; n < serverlist_cachecount; n++ )
1357 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1359 if( n == serverlist_cachecount ) {
1360 // LAN search doesnt require an answer from the master server so we wont
1361 // know the ping nor will it be initialized already...
1364 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1367 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1368 // store the data the engine cares about (address and ping)
1369 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1370 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1371 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1372 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1373 // if not in the slist menu we should print the server to console
1374 if (serverlist_consoleoutput) {
1375 Con_Printf("querying %s\n", ipstring);
1378 ++serverlist_cachecount;
1381 info = &serverlist_cache[n].info;
1382 strlcpy(info->game, "QuakeWorld", sizeof(info->game));;
1383 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1384 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1385 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1387 info->numplayers = 0; // updated below
1388 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1389 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1391 // count active players on server
1392 // (we could gather more info, but we're just after the number)
1393 s = strchr(string, '\n');
1397 while (s < string + length)
1399 for (;s < string + length && *s != '\n';s++)
1401 if (s >= string + length)
1408 if (info->ping == 100000)
1411 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1412 pingtime = bound(0, pingtime, 9999);
1414 info->ping = (int)pingtime;
1416 // legacy/old stuff move it to the menu ASAP
1418 // build description strings for the things users care about
1419 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", pingtime >= 300 ? '1' : (pingtime >= 200 ? '3' : '7'), (int)pingtime, ((info->numplayers > 0 && info->numplayers < info->maxplayers) ? (info->numplayers >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1420 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);
1421 if( serverlist_cache[n].query == SQS_QUERIED ) {
1422 ServerList_ViewList_Remove( &serverlist_cache[n] );
1424 // if not in the slist menu we should print the server to console (if wanted)
1425 else if( serverlist_consoleoutput )
1426 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1427 // and finally, update the view set
1428 ServerList_ViewList_Insert( &serverlist_cache[n] );
1429 serverlist_cache[n].query = SQS_QUERIED;
1433 if (string[0] == 'n')
1436 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
1438 // we may not have liked the packet, but it was a command packet, so
1439 // we're done processing this packet now
1442 // quakeworld ingame packet
1443 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1446 CL_ParseServerMessage();
1449 // netquake control packets, supported for compatibility only
1450 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1455 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1459 if (developer.integer >= 10)
1460 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1461 if (cls.connect_trying)
1463 lhnetaddress_t clientportaddress;
1464 clientportaddress = *peeraddress;
1467 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
1470 LHNETADDRESS_SetPort(&clientportaddress, port);
1472 M_Update_Return_Reason("Accepted");
1473 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1477 if (developer.integer >= 10)
1478 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1479 cls.connect_trying = false;
1480 M_Update_Return_Reason((char *)data);
1483 case CCREP_SERVER_INFO:
1484 if (developer.integer >= 10)
1485 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1486 if (cls.state != ca_dedicated)
1488 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
1489 // string we just ignore it and keep the real address
1491 // serverlist only uses text addresses
1492 cname = UDP_AddrToString(readaddr);
1493 // search the cache for this server
1494 for (n = 0; n < hostCacheCount; n++)
1495 if (!strcmp(cname, serverlist[n].cname))
1498 if (n == hostCacheCount && hostCacheCount < SERVERLISTSIZE)
1501 memset(&serverlist[n], 0, sizeof(serverlist[n]));
1502 strlcpy (serverlist[n].name, MSG_ReadString(), sizeof (serverlist[n].name));
1503 strlcpy (serverlist[n].map, MSG_ReadString(), sizeof (serverlist[n].map));
1504 serverlist[n].users = MSG_ReadByte();
1505 serverlist[n].maxusers = MSG_ReadByte();
1507 if (c != NET_PROTOCOL_VERSION)
1509 strlcpy (serverlist[n].cname, serverlist[n].name, sizeof (serverlist[n].cname));
1510 strcpy(serverlist[n].name, "*");
1511 strlcat (serverlist[n].name, serverlist[n].cname, sizeof(serverlist[n].name));
1513 strlcpy (serverlist[n].cname, cname, sizeof (serverlist[n].cname));
1517 case CCREP_PLAYER_INFO:
1518 // we got a CCREP_PLAYER_INFO??
1519 //if (developer.integer >= 10)
1520 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1522 case CCREP_RULE_INFO:
1523 // we got a CCREP_RULE_INFO??
1524 //if (developer.integer >= 10)
1525 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1531 // we may not have liked the packet, but it was a valid control
1532 // packet, so we're done processing this packet now
1536 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1537 CL_ParseServerMessage();
1541 void NetConn_QueryQueueFrame(void)
1547 static double querycounter = 0;
1549 if (serverlist_querysleep)
1552 // apply a cool down time after master server replies,
1553 // to avoid messing up the ping times on the servers
1554 if (serverlist_querywaittime > realtime)
1557 // each time querycounter reaches 1.0 issue a query
1558 querycounter += cl.realframetime * net_slist_queriespersecond.value;
1559 maxqueries = (int)querycounter;
1560 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1561 querycounter -= maxqueries;
1563 if( maxqueries == 0 ) {
1567 // scan serverlist and issue queries as needed
1568 serverlist_querysleep = true;
1570 timeouttime = realtime - net_slist_timeout.value;
1571 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1573 serverlist_entry_t *entry = &serverlist_cache[ index ];
1574 if( entry->query != SQS_QUERYING )
1579 serverlist_querysleep = false;
1580 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1585 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1587 lhnetaddress_t address;
1590 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1591 if (entry->protocol == PROTOCOL_QUAKEWORLD)
1593 for (socket = 0; socket < cl_numsockets ; socket++)
1594 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
1598 for (socket = 0; socket < cl_numsockets ; socket++)
1599 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1602 //entry->querytime = realtime;
1603 entry->querytime = Sys_DoubleTime();
1604 entry->querycounter++;
1606 // if not in the slist menu we should print the server to console
1607 if (serverlist_consoleoutput)
1608 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1614 entry->query = SQS_TIMEDOUT;
1619 void NetConn_ClientFrame(void)
1622 lhnetaddress_t peeraddress;
1623 NetConn_UpdateSockets();
1624 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1626 if (cls.connect_remainingtries == 0)
1627 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1628 cls.connect_nextsendtime = realtime + 1;
1629 cls.connect_remainingtries--;
1630 if (cls.connect_remainingtries <= -10)
1632 cls.connect_trying = false;
1633 M_Update_Return_Reason("Connect: Failed");
1636 // try challenge first (newer DP server or QW)
1637 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1638 // then try netquake as a fallback (old server, or netquake)
1639 SZ_Clear(&net_message);
1640 // save space for the header, filled in later
1641 MSG_WriteLong(&net_message, 0);
1642 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1643 MSG_WriteString(&net_message, "QUAKE");
1644 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1645 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1646 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1647 SZ_Clear(&net_message);
1649 for (i = 0;i < cl_numsockets;i++)
1650 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1651 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1652 NetConn_QueryQueueFrame();
1653 if (cls.netcon && realtime > cls.netcon->timeout)
1655 Con_Print("Connection timed out\n");
1657 Host_ShutdownServer ();
1661 #define MAX_CHALLENGES 128
1664 lhnetaddress_t address;
1668 challenge[MAX_CHALLENGES];
1670 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1674 for (i = 0;i < bufferlength - 1;i++)
1678 c = rand () % (127 - 33) + 33;
1679 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1685 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1687 unsigned int nb_clients = 0, i;
1690 // How many clients are there?
1691 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1692 if (svs.clients[i].active)
1695 // TODO: we should add more information for the full status string
1696 length = dpsnprintf(out_msg, out_size,
1697 "\377\377\377\377%s\x0A"
1698 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
1699 "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
1702 fullstatus ? "statusResponse" : "infoResponse",
1703 gamename, com_modname, gameversion.integer, svs.maxclients,
1704 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1705 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1706 fullstatus ? "\n" : "");
1708 // Make sure it fits in the buffer
1717 ptr = out_msg + length;
1718 left = (int)out_size - length;
1720 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1722 client_t *cl = &svs.clients[i];
1725 int nameind, cleanind;
1727 char cleanname [sizeof(cl->name)];
1729 // Remove all characters '"' and '\' in the player name
1734 curchar = cl->name[nameind++];
1735 if (curchar != '"' && curchar != '\\')
1737 cleanname[cleanind++] = curchar;
1738 if (cleanind == sizeof(cleanname) - 1)
1741 } while (curchar != '\0');
1743 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1745 (int)(cl->ping * 1000.0f),
1758 extern void SV_SendServerinfo (client_t *client);
1759 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1761 int i, ret, clientnum, best;
1765 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1767 // see if we can identify the sender as a local player
1768 // (this is necessary for rcon to send a reliable reply if the client is
1769 // actually on the server, not sending remotely)
1770 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1771 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1773 if (i == svs.maxclients)
1778 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1780 // received a command string - strip off the packaging and put it
1781 // into our string buffer with NULL termination
1784 length = min(length, (int)sizeof(stringbuf) - 1);
1785 memcpy(stringbuf, data, length);
1786 stringbuf[length] = 0;
1789 if (developer.integer >= 10)
1791 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1792 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1793 Com_HexDumpToConsole(data, length);
1796 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1798 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1800 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1802 if (besttime > challenge[i].time)
1803 besttime = challenge[best = i].time;
1805 // if we did not find an exact match, choose the oldest and
1806 // update address and string
1807 if (i == MAX_CHALLENGES)
1810 challenge[i].address = *peeraddress;
1811 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1813 challenge[i].time = realtime;
1814 // send the challenge
1815 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1818 if (length > 8 && !memcmp(string, "connect\\", 8))
1822 if ((s = SearchInfostring(string, "challenge")))
1824 // validate the challenge
1825 for (i = 0;i < MAX_CHALLENGES;i++)
1826 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1828 if (i < MAX_CHALLENGES)
1830 // check engine protocol
1831 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1833 if (developer.integer >= 10)
1834 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1835 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1839 // see if this is a duplicate connection request
1840 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1841 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1843 if (clientnum < svs.maxclients && realtime - client->connecttime < net_messagerejointimeout.value)
1845 // client is still trying to connect,
1846 // so we send a duplicate reply
1847 if (developer.integer >= 10)
1848 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1849 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1852 else if (clientnum < svs.maxclients)
1854 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1856 // client crashed and is coming back, keep their stuff intact
1857 SV_SendServerinfo(client);
1858 //host_client = client;
1859 //SV_DropClient (true);
1866 // this is a new client, find a slot
1867 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1868 if (!client->active)
1870 if (clientnum < svs.maxclients)
1872 // prepare the client struct
1873 if ((conn = NetConn_Open(mysocket, peeraddress)))
1875 // allocated connection
1876 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1877 if (developer.integer >= 10)
1878 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1879 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1880 // now set up the client
1882 SV_ConnectClient(clientnum, conn);
1884 NetConn_Heartbeat(1);
1890 if (developer.integer >= 10)
1891 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1892 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1900 if (length >= 7 && !memcmp(string, "getinfo", 7))
1902 const char *challenge = NULL;
1904 // If there was a challenge in the getinfo message
1905 if (length > 8 && string[7] == ' ')
1906 challenge = string + 8;
1908 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1910 if (developer.integer >= 10)
1911 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1912 NetConn_WriteString(mysocket, response, peeraddress);
1916 if (length >= 9 && !memcmp(string, "getstatus", 9))
1918 const char *challenge = NULL;
1920 // If there was a challenge in the getinfo message
1921 if (length > 10 && string[9] == ' ')
1922 challenge = string + 10;
1924 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1926 if (developer.integer >= 10)
1927 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1928 NetConn_WriteString(mysocket, response, peeraddress);
1932 if (length >= 5 && !memcmp(string, "rcon ", 5))
1935 char *s = string + 5;
1937 for (i = 0;*s > ' ';s++)
1938 if (i < (int)sizeof(password) - 1)
1941 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
1943 // looks like a legitimate rcon command with the correct password
1944 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
1945 rcon_redirect = true;
1946 rcon_redirect_bufferpos = 0;
1947 Cmd_ExecuteString(s, src_command);
1948 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
1949 rcon_redirect = false;
1950 // print resulting text to client
1951 // if client is playing, send a reliable reply instead of
1955 // if the netconnection is loop, then this is the
1956 // local player on a listen mode server, and it would
1957 // result in duplicate printing to the console
1958 // (not that the local player should be using rcon
1959 // when they have the console)
1960 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
1961 SV_ClientPrintf("%s", rcon_redirect_buffer);
1966 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
1967 NetConn_WriteString(mysocket, response, peeraddress);
1973 if (!strncmp(string, "ping", 4))
1975 if (developer.integer >= 10)
1976 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1977 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1980 if (!strncmp(string, "ack", 3))
1983 // we may not have liked the packet, but it was a command packet, so
1984 // we're done processing this packet now
1987 // LordHavoc: disabled netquake control packet support in server
1991 // netquake control packets, supported for compatibility only
1992 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1997 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
2001 if (developer.integer >= 10)
2002 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
2003 if (length >= (int)strlen("QUAKE") + 1 + 1)
2005 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
2007 if (developer.integer >= 10)
2008 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
2009 SZ_Clear(&net_message);
2010 // save space for the header, filled in later
2011 MSG_WriteLong(&net_message, 0);
2012 MSG_WriteByte(&net_message, CCREP_REJECT);
2013 MSG_WriteString(&net_message, "Incompatible version.\n");
2014 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2015 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2016 SZ_Clear(&net_message);
2020 // see if this is a duplicate connection request
2021 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2022 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2024 if (clientnum < svs.maxclients)
2026 // duplicate connection request
2027 if (realtime - client->connecttime < 2.0)
2029 // client is still trying to connect,
2030 // so we send a duplicate reply
2031 if (developer.integer >= 10)
2032 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
2033 SZ_Clear(&net_message);
2034 // save space for the header, filled in later
2035 MSG_WriteLong(&net_message, 0);
2036 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2037 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
2038 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2039 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2040 SZ_Clear(&net_message);
2043 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
2045 SV_SendServerinfo(client);
2046 // the old client hasn't sent us anything
2047 // in quite a while, so kick off and let
2048 // the retry take care of it...
2049 //host_client = client;
2050 //SV_DropClient (true);
2056 // this is a new client, find a slot
2057 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2058 if (!client->active)
2060 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
2062 // connect to the client
2063 // everything is allocated, just fill in the details
2064 strlcpy (conn->address, addressstring2, sizeof (conn->address));
2065 if (developer.integer >= 10)
2066 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
2067 // send back the info about the server connection
2068 SZ_Clear(&net_message);
2069 // save space for the header, filled in later
2070 MSG_WriteLong(&net_message, 0);
2071 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2072 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
2073 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2074 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2075 SZ_Clear(&net_message);
2076 // now set up the client struct
2078 SV_ConnectClient(clientnum, conn);
2080 NetConn_Heartbeat(1);
2084 if (developer.integer >= 10)
2085 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
2086 // no room; try to let player know
2087 SZ_Clear(&net_message);
2088 // save space for the header, filled in later
2089 MSG_WriteLong(&net_message, 0);
2090 MSG_WriteByte(&net_message, CCREP_REJECT);
2091 MSG_WriteString(&net_message, "Server is full.\n");
2092 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2093 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2094 SZ_Clear(&net_message);
2101 case CCREQ_SERVER_INFO:
2102 if (developer.integer >= 10)
2103 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
2104 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
2106 if (developer.integer >= 10)
2107 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
2108 SZ_Clear(&net_message);
2109 // save space for the header, filled in later
2110 MSG_WriteLong(&net_message, 0);
2111 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
2112 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
2113 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
2114 MSG_WriteString(&net_message, hostname.string);
2115 MSG_WriteString(&net_message, sv.name);
2116 MSG_WriteByte(&net_message, net_activeconnections);
2117 MSG_WriteByte(&net_message, svs.maxclients);
2118 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2119 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2120 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2121 SZ_Clear(&net_message);
2124 case CCREQ_PLAYER_INFO:
2125 if (developer.integer >= 10)
2126 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
2129 int playerNumber, activeNumber, clientNumber;
2132 playerNumber = MSG_ReadByte();
2134 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
2135 if (client->active && ++activeNumber == playerNumber)
2137 if (clientNumber != svs.maxclients)
2139 SZ_Clear(&net_message);
2140 // save space for the header, filled in later
2141 MSG_WriteLong(&net_message, 0);
2142 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
2143 MSG_WriteByte(&net_message, playerNumber);
2144 MSG_WriteString(&net_message, client->name);
2145 MSG_WriteLong(&net_message, client->colors);
2146 MSG_WriteLong(&net_message, (int)client->edict->fields.server->frags);
2147 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
2148 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
2149 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2150 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2151 SZ_Clear(&net_message);
2155 case CCREQ_RULE_INFO:
2156 if (developer.integer >= 10)
2157 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
2163 // find the search start location
2164 prevCvarName = MSG_ReadString();
2165 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
2167 // send the response
2168 SZ_Clear(&net_message);
2169 // save space for the header, filled in later
2170 MSG_WriteLong(&net_message, 0);
2171 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
2174 MSG_WriteString(&net_message, var->name);
2175 MSG_WriteString(&net_message, var->string);
2177 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2178 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2179 SZ_Clear(&net_message);
2186 // we may not have liked the packet, but it was a valid control
2187 // packet, so we're done processing this packet now
2194 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol)) == 2)
2197 SV_ReadClientMessage();
2206 void NetConn_ServerFrame(void)
2209 lhnetaddress_t peeraddress;
2210 for (i = 0;i < sv_numsockets;i++)
2211 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2212 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2213 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2215 // never timeout loopback connections
2216 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2218 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2220 SV_DropClient(false);
2226 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
2230 lhnetaddress_t masteraddress;
2231 lhnetaddress_t broadcastaddress;
2234 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2237 // 26000 is the default quake server port, servers on other ports will not
2239 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2240 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2244 for (i = 0;i < cl_numsockets;i++)
2248 // search LAN for Quake servers
2249 SZ_Clear(&net_message);
2250 // save space for the header, filled in later
2251 MSG_WriteLong(&net_message, 0);
2252 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2253 MSG_WriteString(&net_message, "QUAKE");
2254 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2255 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2256 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2257 SZ_Clear(&net_message);
2259 // search LAN for DarkPlaces servers
2260 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2262 // build the getservers message to send to the dpmaster master servers
2263 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2266 for (masternum = 0;sv_masters[masternum].name;masternum++)
2268 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2271 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2278 // only query QuakeWorld servers when the user wants to
2281 for (i = 0;i < cl_numsockets;i++)
2285 // search LAN for QuakeWorld servers
2286 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
2288 // build the getservers message to send to the qwmaster master servers
2289 // note this has no -1 prefix, and the trailing nul byte is sent
2290 dpsnprintf(request, sizeof(request), "c\n");
2293 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
2295 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2297 if (m_state != m_slist)
2299 char lookupstring[128];
2300 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
2301 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
2304 NetConn_Write(cl_sockets[i], request, 7, &masteraddress);
2310 if (!masterquerycount)
2312 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2313 M_Update_Return_Reason("No network");
2317 void NetConn_Heartbeat(int priority)
2319 lhnetaddress_t masteraddress;
2321 lhnetsocket_t *mysocket;
2323 // if it's a state change (client connected), limit next heartbeat to no
2324 // more than 30 sec in the future
2325 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2326 nextheartbeattime = realtime + 30.0;
2328 // limit heartbeatperiod to 30 to 270 second range,
2329 // lower limit is to avoid abusing master servers with excess traffic,
2330 // upper limit is to avoid timing out on the master server (which uses
2332 if (sv_heartbeatperiod.value < 30)
2333 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2334 if (sv_heartbeatperiod.value > 270)
2335 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2337 // make advertising optional and don't advertise singleplayer games, and
2338 // only send a heartbeat as often as the admin wants
2339 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2341 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2342 for (masternum = 0;sv_masters[masternum].name;masternum++)
2343 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2344 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2348 static void Net_Heartbeat_f(void)
2351 NetConn_Heartbeat(2);
2353 Con_Print("No server running, can not heartbeat to master server.\n");
2356 void PrintStats(netconn_t *conn)
2358 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2359 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2361 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2364 void Net_Stats_f(void)
2367 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2368 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2369 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2370 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2371 Con_Printf("packetsSent = %i\n", packetsSent);
2372 Con_Printf("packetsReSent = %i\n", packetsReSent);
2373 Con_Printf("packetsReceived = %i\n", packetsReceived);
2374 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2375 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2376 Con_Print("connections =\n");
2377 for (conn = netconn_list;conn;conn = conn->next)
2381 void Net_Slist_f(void)
2383 ServerList_ResetMasks();
2384 serverlist_sortbyfield = SLIF_PING;
2385 serverlist_sortdescending = false;
2386 if (m_state != m_slist) {
2387 Con_Print("Sending requests to master servers\n");
2388 ServerList_QueryList(true, false);
2389 serverlist_consoleoutput = true;
2390 Con_Print("Listening for replies...\n");
2392 ServerList_QueryList(true, false);
2395 void Net_SlistQW_f(void)
2397 ServerList_ResetMasks();
2398 serverlist_sortbyfield = SLIF_PING;
2399 serverlist_sortdescending = false;
2400 if (m_state != m_slist) {
2401 Con_Print("Sending requests to master servers\n");
2402 ServerList_QueryList(false, true);
2403 serverlist_consoleoutput = true;
2404 Con_Print("Listening for replies...\n");
2406 ServerList_QueryList(false, true);
2409 void NetConn_Init(void)
2412 lhnetaddress_t tempaddress;
2413 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2414 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2415 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
2416 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
2417 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2418 Cvar_RegisterVariable(&net_slist_queriespersecond);
2419 Cvar_RegisterVariable(&net_slist_queriesperframe);
2420 Cvar_RegisterVariable(&net_slist_timeout);
2421 Cvar_RegisterVariable(&net_slist_maxtries);
2422 Cvar_RegisterVariable(&net_messagetimeout);
2423 Cvar_RegisterVariable(&net_messagerejointimeout);
2424 Cvar_RegisterVariable(&net_connecttimeout);
2425 Cvar_RegisterVariable(&cl_netlocalping);
2426 Cvar_RegisterVariable(&cl_netpacketloss);
2427 Cvar_RegisterVariable(&hostname);
2428 Cvar_RegisterVariable(&developer_networking);
2429 Cvar_RegisterVariable(&cl_netport);
2430 Cvar_RegisterVariable(&sv_netport);
2431 Cvar_RegisterVariable(&net_address);
2432 //Cvar_RegisterVariable(&net_address_ipv6);
2433 Cvar_RegisterVariable(&sv_public);
2434 Cvar_RegisterVariable(&sv_heartbeatperiod);
2435 for (i = 0;sv_masters[i].name;i++)
2436 Cvar_RegisterVariable(&sv_masters[i]);
2437 Cvar_RegisterVariable(&gameversion);
2438 // 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.
2439 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2441 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2443 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
2444 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2447 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2449 // 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
2450 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2452 i = atoi(com_argv[i + 1]);
2453 if (i >= 0 && i < 65536)
2455 Con_Printf("-port option used, setting port cvar to %i\n", i);
2456 Cvar_SetValueQuick(&sv_netport, i);
2459 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2463 net_message.data = net_message_buf;
2464 net_message.maxsize = sizeof(net_message_buf);
2465 net_message.cursize = 0;
2469 void NetConn_Shutdown(void)
2471 NetConn_CloseClientPorts();
2472 NetConn_CloseServerPorts();