2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2002 Mathieu Olivier
4 Copyright (C) 2003 Forest Hale
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #define QWMASTER_PORT 27000
27 #define DPMASTER_PORT 27950
29 // note this defaults on for dedicated servers, off for listen servers
30 cvar_t sv_public = {0, "sv_public", "0", "1: advertises this server on the master server (so that players can find it in the server browser); 0: allow direct queries only; -1: do not respond to direct queries; -2: do not allow anyone to connect"};
31 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
33 static cvar_t sv_masters [] =
35 {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
36 {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
37 {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
38 {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
39 {0, "sv_masterextra1", "ghdigital.com", "default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
40 {0, "sv_masterextra2", "dpmaster.deathmask.net", "default master server 2 (admin: Willis)"}, // admin: Willis
41 {0, "sv_masterextra3", "excalibur.nvg.ntnu.no", "default master server 3 (admin: tChr)"}, // admin: tChr
45 static cvar_t sv_qwmasters [] =
47 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
48 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
49 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
50 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
51 {0, "sv_qwmasterextra1", "192.246.40.37:27000", "id Limbo (admin: id Software)"},
52 {0, "sv_qwmasterextra2", "192.246.40.37:27002", "id CTF (admin: id Software)"},
53 {0, "sv_qwmasterextra3", "192.246.40.37:27003", "id TeamFortress (admin: id Software)"},
54 {0, "sv_qwmasterextra4", "192.246.40.37:27004", "id Miscilaneous (admin: id Software)"},
55 {0, "sv_qwmasterextra5", "192.246.40.37:27006", "id Deathmatch Only (admin: id Software)"},
56 {0, "sv_qwmasterextra6", "150.254.66.120:27000", "Poland's master server. (admin: unknown)"},
57 {0, "sv_qwmasterextra7", "62.112.145.129:27000", "Ocrana master server. (admin: unknown)"},
58 {0, "sv_qwmasterextra8", "master.edome.net", "edome master server. (admin: unknown)"},
59 {0, "sv_qwmasterextra9", "qwmaster.barrysworld.com", "barrysworld master server. (admin: unknown)"},
60 {0, "sv_qwmasterextra10", "qwmaster.ocrana.de:27000", "Ocrana2 master server. (admin: unknown)"},
61 {0, "sv_qwmasterextra11", "213.221.174.165:27000", "unknown1 master server. (admin: unknown)"},
62 {0, "sv_qwmasterextra12", "195.74.0.8", "unknown2 master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra13", "204.182.161.2", "unknown3 master server. (admin: unknown)"},
67 static double nextheartbeattime = 0;
69 sizebuf_t net_message;
70 static unsigned char net_message_buf[NET_MAXMESSAGE];
72 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
73 cvar_t net_connecttimeout = {0, "net_connecttimeout","10", "after requesting a connection, the client must reply within this many seconds or be dropped (cuts down on connect floods)"};
74 cvar_t net_connectfloodblockingtimeout = {0, "net_connectfloodblockingtimeout", "5", "when a connection packet is received, it will block all future connect packets from that IP address for this many seconds (cuts down on connect floods)"};
75 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
76 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
78 cvar_t cl_netlocalping = {0, "cl_netlocalping","0", "lags local loopback connection by this much ping time (useful to play more fairly on your own server with people with higher pings)"};
79 static cvar_t cl_netpacketloss = {0, "cl_netpacketloss","0", "drops this percentage of packets (incoming and outgoing), useful for testing network protocol robustness (effects failing to start, sounds failing to play, etc)"};
80 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
81 static cvar_t net_slist_queriesperframe = {0, "net_slist_queriesperframe", "4", "maximum number of server information requests to send each rendered frame (guards against low framerates causing problems)"};
82 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
83 static cvar_t net_slist_maxtries = {0, "net_slist_maxtries", "3", "how many times to ask the same server for information (more times gives better ping reports but takes longer)"};
85 static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible"};
87 /* statistic counters */
88 static int packetsSent = 0;
89 static int packetsReSent = 0;
90 static int packetsReceived = 0;
91 static int receivedDuplicateCount = 0;
92 static int droppedDatagrams = 0;
94 static int unreliableMessagesSent = 0;
95 static int unreliableMessagesReceived = 0;
96 static int reliableMessagesSent = 0;
97 static int reliableMessagesReceived = 0;
99 double masterquerytime = -1000;
100 int masterquerycount = 0;
101 int masterreplycount = 0;
102 int serverquerycount = 0;
103 int serverreplycount = 0;
105 // this is only false if there are still servers left to query
106 static qboolean serverlist_querysleep = true;
107 // this is pushed a second or two ahead of realtime whenever a master server
108 // reply is received, to avoid issuing queries while master replies are still
109 // flooding in (which would make a mess of the ping times)
110 static double serverlist_querywaittime = 0;
112 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
113 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
115 static int cl_numsockets;
116 static lhnetsocket_t *cl_sockets[16];
117 static int sv_numsockets;
118 static lhnetsocket_t *sv_sockets[16];
120 netconn_t *netconn_list = NULL;
121 mempool_t *netconn_mempool = NULL;
123 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
124 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
125 cvar_t net_address = {0, "net_address", "0.0.0.0", "network address to open ports on"};
126 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]", "network address to open ipv6 ports on"};
128 char net_extresponse[NET_EXTRESPONSE_MAX][1400];
129 int net_extresponse_count = 0;
130 int net_extresponse_last = 0;
132 // ServerList interface
133 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
134 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
136 serverlist_infofield_t serverlist_sortbyfield;
137 qboolean serverlist_sortdescending;
139 int serverlist_viewcount = 0;
140 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
142 int serverlist_cachecount;
143 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
145 qboolean serverlist_consoleoutput;
147 // helper function to insert a value into the viewset
148 // spare entries will be removed
149 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
152 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
153 i = serverlist_viewcount++;
155 i = SERVERLIST_VIEWLISTSIZE - 1;
158 for( ; i > index ; i-- )
159 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
161 serverlist_viewlist[index] = entry;
164 // we suppose serverlist_viewcount to be valid, ie > 0
165 static void _ServerList_ViewList_Helper_Remove( int index )
167 serverlist_viewcount--;
168 for( ; index < serverlist_viewcount ; index++ )
169 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
172 // returns true if A should be inserted before B
173 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
175 int result = 0; // > 0 if for numbers A > B and for text if A < B
177 switch( serverlist_sortbyfield ) {
179 result = A->info.ping - B->info.ping;
181 case SLIF_MAXPLAYERS:
182 result = A->info.maxplayers - B->info.maxplayers;
184 case SLIF_NUMPLAYERS:
185 result = A->info.numplayers - B->info.numplayers;
188 result = A->info.protocol - B->info.protocol;
191 result = strcmp( B->info.cname, A->info.cname );
194 result = strcmp( B->info.game, A->info.game );
197 result = strcmp( B->info.map, A->info.map );
200 result = strcmp( B->info.mod, A->info.mod );
203 result = strcmp( B->info.name, A->info.name );
206 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
210 if( serverlist_sortdescending )
214 // if the chosen sort key is identical, sort by index
215 // (makes this a stable sort, so that later replies from servers won't
216 // shuffle the servers around when they have the same ping)
220 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
222 // This should actually be done with some intermediate and end-of-function return
234 case SLMO_GREATEREQUAL:
236 case SLMO_NOTCONTAIN:
239 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
244 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
247 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
248 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
249 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
251 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
252 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
255 // Same here, also using an intermediate & final return would be more appropriate
259 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
260 case SLMO_NOTCONTAIN:
261 return !*bufferB || !strstr( bufferA, bufferB );
263 return strcmp( bufferA, bufferB ) < 0;
265 return strcmp( bufferA, bufferB ) <= 0;
267 return strcmp( bufferA, bufferB ) == 0;
269 return strcmp( bufferA, bufferB ) > 0;
271 return strcmp( bufferA, bufferB ) != 0;
272 case SLMO_GREATEREQUAL:
273 return strcmp( bufferA, bufferB ) >= 0;
275 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
280 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
282 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
284 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
286 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
288 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
290 if( *mask->info.cname
291 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
294 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
297 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
300 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
303 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
308 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
312 // reject incompatible servers
313 if (entry->info.gameversion != gameversion.integer)
316 // FIXME: change this to be more readable (...)
317 // now check whether it passes through the masks
318 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
319 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
322 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
323 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
325 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
328 if( !serverlist_viewcount ) {
329 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
332 // ok, insert it, we just need to find out where exactly:
335 // check whether to insert it as new first item
336 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
337 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
339 } // check whether to insert it as new last item
340 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
341 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
345 end = serverlist_viewcount - 1;
346 while( end > start + 1 )
348 mid = (start + end) / 2;
349 // test the item that lies in the middle between start and end
350 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
351 // the item has to be in the upper half
354 // the item has to be in the lower half
357 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
360 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
363 for( i = 0; i < serverlist_viewcount; i++ )
365 if (serverlist_viewlist[i] == entry)
367 _ServerList_ViewList_Helper_Remove(i);
373 void ServerList_RebuildViewList(void)
377 serverlist_viewcount = 0;
378 for( i = 0 ; i < serverlist_cachecount ; i++ )
379 if( serverlist_cache[i].query == SQS_QUERIED )
380 ServerList_ViewList_Insert( &serverlist_cache[i] );
383 void ServerList_ResetMasks(void)
385 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
386 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
390 static void _ServerList_Test(void)
393 for( i = 0 ; i < 1024 ; i++ ) {
394 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
395 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
396 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
397 serverlist_cache[serverlist_cachecount].finished = true;
398 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
399 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
400 serverlist_cachecount++;
405 void ServerList_QueryList(qboolean querydp, qboolean queryqw)
407 //masterquerytime = realtime;
408 masterquerytime = Sys_DoubleTime();
409 masterquerycount = 0;
410 masterreplycount = 0;
411 serverquerycount = 0;
412 serverreplycount = 0;
413 serverlist_cachecount = 0;
414 serverlist_viewcount = 0;
415 serverlist_consoleoutput = false;
417 //_ServerList_Test();
419 NetConn_QueryMasters(querydp, queryqw);
424 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
426 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
430 if (cl_netpacketloss.integer)
431 for (i = 0;i < cl_numsockets;i++)
432 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
434 if (developer_networking.integer)
436 char addressstring[128], addressstring2[128];
437 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
440 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
441 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
442 Com_HexDumpToConsole((unsigned char *)data, length);
445 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
450 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
454 if (cl_netpacketloss.integer)
455 for (i = 0;i < cl_numsockets;i++)
456 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
458 ret = LHNET_Write(mysocket, data, length, peeraddress);
459 if (developer_networking.integer)
461 char addressstring[128], addressstring2[128];
462 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
463 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
464 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
465 Com_HexDumpToConsole((unsigned char *)data, length);
470 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
472 // note this does not include the trailing NULL because we add that in the parser
473 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
476 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol)
478 if (protocol == PROTOCOL_QUAKEWORLD)
481 qboolean sendreliable;
483 // note that it is ok to send empty messages to the qw server,
484 // otherwise it won't respond to us at all
486 sendreliable = false;
487 // if the remote side dropped the last reliable message, resend it
488 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
490 // if the reliable transmit buffer is empty, copy the current message out
491 if (!conn->sendMessageLength && conn->message.cursize)
493 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
494 conn->sendMessageLength = conn->message.cursize;
495 SZ_Clear(&conn->message); // clear the message buffer
496 conn->qw.reliable_sequence ^= 1;
499 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
500 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
501 // last received unreliable packet number, and last received reliable packet number (0 or 1)
502 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
504 conn->qw.outgoing_sequence++;
505 // client sends qport in every packet
506 if (conn == cls.netcon)
508 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
510 // also update cls.qw_outgoing_sequence
511 cls.qw_outgoing_sequence = conn->qw.outgoing_sequence;
513 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
515 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
518 // add the reliable message if there is one
521 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
522 packetLen += conn->sendMessageLength;
523 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
525 // add the unreliable message if possible
526 if (packetLen + data->cursize <= 1400)
528 memcpy(sendbuffer + packetLen, data->data, data->cursize);
529 packetLen += data->cursize;
532 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
535 unreliableMessagesSent++;
537 // delay later packets to obey rate limit
538 conn->qw.cleartime = max(conn->qw.cleartime, realtime) + packetLen * conn->qw.rate;
544 unsigned int packetLen;
545 unsigned int dataLen;
547 unsigned int *header;
549 // if a reliable message fragment has been lost, send it again
550 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
552 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
554 dataLen = conn->sendMessageLength;
559 dataLen = MAX_PACKETFRAGMENT;
563 packetLen = NET_HEADERSIZE + dataLen;
565 header = (unsigned int *)sendbuffer;
566 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
567 header[1] = BigLong(conn->nq.sendSequence - 1);
568 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
570 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
572 conn->lastSendTime = realtime;
577 // if we have a new reliable message to send, do so
578 if (!conn->sendMessageLength && conn->message.cursize)
580 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
582 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
583 conn->message.overflowed = true;
587 if (developer_networking.integer && conn == cls.netcon)
589 Con_Print("client sending reliable message to server:\n");
590 SZ_HexDumpToConsole(&conn->message);
593 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
594 conn->sendMessageLength = conn->message.cursize;
595 SZ_Clear(&conn->message);
597 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
599 dataLen = conn->sendMessageLength;
604 dataLen = MAX_PACKETFRAGMENT;
608 packetLen = NET_HEADERSIZE + dataLen;
610 header = (unsigned int *)sendbuffer;
611 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
612 header[1] = BigLong(conn->nq.sendSequence);
613 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
615 conn->nq.sendSequence++;
617 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
619 conn->lastSendTime = realtime;
621 reliableMessagesSent++;
624 // if we have an unreliable message to send, do so
627 packetLen = NET_HEADERSIZE + data->cursize;
629 if (packetLen > (int)sizeof(sendbuffer))
631 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
635 header = (unsigned int *)sendbuffer;
636 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
637 header[1] = BigLong(conn->nq.unreliableSendSequence);
638 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
640 conn->nq.unreliableSendSequence++;
642 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
645 unreliableMessagesSent++;
651 void NetConn_CloseClientPorts(void)
653 for (;cl_numsockets > 0;cl_numsockets--)
654 if (cl_sockets[cl_numsockets - 1])
655 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
658 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
660 lhnetaddress_t address;
662 char addressstring2[1024];
663 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
665 if ((s = LHNET_OpenSocket_Connectionless(&address)))
667 cl_sockets[cl_numsockets++] = s;
668 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
669 Con_Printf("Client opened a socket on address %s\n", addressstring2);
673 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
674 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
678 Con_Printf("Client unable to parse address %s\n", addressstring);
681 void NetConn_OpenClientPorts(void)
684 NetConn_CloseClientPorts();
685 port = bound(0, cl_netport.integer, 65535);
686 if (cl_netport.integer != port)
687 Cvar_SetValueQuick(&cl_netport, port);
688 Con_Printf("Client using port %i\n", port);
689 NetConn_OpenClientPort("local:2", 0);
690 NetConn_OpenClientPort(net_address.string, port);
691 //NetConn_OpenClientPort(net_address_ipv6.string, port);
694 void NetConn_CloseServerPorts(void)
696 for (;sv_numsockets > 0;sv_numsockets--)
697 if (sv_sockets[sv_numsockets - 1])
698 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
701 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
703 lhnetaddress_t address;
706 char addressstring2[1024];
708 for (port = defaultport; port <= defaultport + 100; port++)
710 if (LHNETADDRESS_FromString(&address, addressstring, port))
712 if ((s = LHNET_OpenSocket_Connectionless(&address)))
714 sv_sockets[sv_numsockets++] = s;
715 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
716 Con_Printf("Server listening on address %s\n", addressstring2);
721 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
722 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
727 Con_Printf("Server unable to parse address %s\n", addressstring);
728 // if it cant parse one address, it wont be able to parse another for sure
734 void NetConn_OpenServerPorts(int opennetports)
737 NetConn_CloseServerPorts();
738 NetConn_UpdateSockets();
739 port = bound(0, sv_netport.integer, 65535);
742 Con_Printf("Server using port %i\n", port);
743 if (sv_netport.integer != port)
744 Cvar_SetValueQuick(&sv_netport, port);
745 if (cls.state != ca_dedicated)
746 NetConn_OpenServerPort("local:1", 0);
749 NetConn_OpenServerPort(net_address.string, port);
750 //NetConn_OpenServerPort(net_address_ipv6.string, port);
752 if (sv_numsockets == 0)
753 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
756 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
758 int i, a = LHNETADDRESS_GetAddressType(address);
759 for (i = 0;i < cl_numsockets;i++)
760 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
761 return cl_sockets[i];
765 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
767 int i, a = LHNETADDRESS_GetAddressType(address);
768 for (i = 0;i < sv_numsockets;i++)
769 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
770 return sv_sockets[i];
774 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
777 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
778 conn->mysocket = mysocket;
779 conn->peeraddress = *peeraddress;
780 conn->lastMessageTime = realtime;
781 conn->message.data = conn->messagedata;
782 conn->message.maxsize = sizeof(conn->messagedata);
783 conn->message.cursize = 0;
784 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
785 // reduce effectiveness of connection request floods
786 conn->timeout = realtime + net_connecttimeout.value;
787 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
788 conn->next = netconn_list;
793 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
794 void NetConn_Close(netconn_t *conn)
797 // remove connection from list
799 // allow the client to reconnect immediately
800 NetConn_ClearConnectFlood(&(conn->peeraddress));
802 if (conn == netconn_list)
803 netconn_list = conn->next;
806 for (c = netconn_list;c;c = c->next)
810 c->next = conn->next;
814 // not found in list, we'll avoid crashing here...
822 static int clientport = -1;
823 static int clientport2 = -1;
824 static int hostport = -1;
825 void NetConn_UpdateSockets(void)
827 if (cls.state != ca_dedicated)
829 if (clientport2 != cl_netport.integer)
831 clientport2 = cl_netport.integer;
832 if (cls.state == ca_connected)
833 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
835 if (cls.state == ca_disconnected && clientport != clientport2)
837 clientport = clientport2;
838 NetConn_CloseClientPorts();
840 if (cl_numsockets == 0)
841 NetConn_OpenClientPorts();
844 if (hostport != sv_netport.integer)
846 hostport = sv_netport.integer;
848 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
852 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol, double newtimeout)
857 // TODO: add netgraph stuff rather than just packetloss counting...
859 if (protocol == PROTOCOL_QUAKEWORLD)
861 int sequence, sequence_ack;
862 int reliable_ack, reliable_message;
866 sequence = LittleLong(*((int *)(data + 0)));
867 sequence_ack = LittleLong(*((int *)(data + 4)));
871 if (conn != cls.netcon)
876 // 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?)
877 qport = LittleShort(*((int *)(data + 8)));
883 reliable_message = (sequence >> 31) & 1;
884 reliable_ack = (sequence_ack >> 31) & 1;
885 sequence &= ~(1<<31);
886 sequence_ack &= ~(1<<31);
887 if (sequence <= conn->qw.incoming_sequence)
889 //Con_DPrint("Got a stale datagram\n");
892 count = sequence - (conn->qw.incoming_sequence + 1);
895 droppedDatagrams += count;
896 //Con_DPrintf("Dropped %u datagram(s)\n", count);
899 conn->packetlost[conn->packetlostcounter] = true;
900 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
903 conn->packetlost[conn->packetlostcounter] = false;
904 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
905 if (reliable_ack == conn->qw.reliable_sequence)
907 // received, now we will be able to send another reliable message
908 conn->sendMessageLength = 0;
909 reliableMessagesReceived++;
911 conn->qw.incoming_sequence = sequence;
912 if (conn == cls.netcon)
913 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
914 conn->qw.incoming_acknowledged = sequence_ack;
915 conn->qw.incoming_reliable_acknowledged = reliable_ack;
916 if (reliable_message)
917 conn->qw.incoming_reliable_sequence ^= 1;
918 conn->lastMessageTime = realtime;
919 conn->timeout = realtime + newtimeout;
920 unreliableMessagesReceived++;
921 SZ_Clear(&net_message);
922 SZ_Write(&net_message, data, length);
930 unsigned int sequence;
933 qlength = (unsigned int)BigLong(((int *)data)[0]);
934 flags = qlength & ~NETFLAG_LENGTH_MASK;
935 qlength &= NETFLAG_LENGTH_MASK;
936 // control packets were already handled
937 if (!(flags & NETFLAG_CTL) && qlength == length)
939 sequence = BigLong(((int *)data)[1]);
943 if (flags & NETFLAG_UNRELIABLE)
945 if (sequence >= conn->nq.unreliableReceiveSequence)
947 if (sequence > conn->nq.unreliableReceiveSequence)
949 count = sequence - conn->nq.unreliableReceiveSequence;
950 droppedDatagrams += count;
951 //Con_DPrintf("Dropped %u datagram(s)\n", count);
954 conn->packetlost[conn->packetlostcounter] = true;
955 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
958 conn->packetlost[conn->packetlostcounter] = false;
959 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
960 conn->nq.unreliableReceiveSequence = sequence + 1;
961 conn->lastMessageTime = realtime;
962 conn->timeout = realtime + newtimeout;
963 unreliableMessagesReceived++;
966 SZ_Clear(&net_message);
967 SZ_Write(&net_message, data, length);
973 // Con_DPrint("Got a stale datagram\n");
976 else if (flags & NETFLAG_ACK)
978 if (sequence == (conn->nq.sendSequence - 1))
980 if (sequence == conn->nq.ackSequence)
982 conn->nq.ackSequence++;
983 if (conn->nq.ackSequence != conn->nq.sendSequence)
984 Con_DPrint("ack sequencing error\n");
985 conn->lastMessageTime = realtime;
986 conn->timeout = realtime + newtimeout;
987 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
989 unsigned int packetLen;
990 unsigned int dataLen;
992 unsigned int *header;
994 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
995 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
997 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
999 dataLen = conn->sendMessageLength;
1004 dataLen = MAX_PACKETFRAGMENT;
1008 packetLen = NET_HEADERSIZE + dataLen;
1010 header = (unsigned int *)sendbuffer;
1011 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
1012 header[1] = BigLong(conn->nq.sendSequence);
1013 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1015 conn->nq.sendSequence++;
1017 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
1019 conn->lastSendTime = realtime;
1024 conn->sendMessageLength = 0;
1027 // Con_DPrint("Duplicate ACK received\n");
1030 // Con_DPrint("Stale ACK received\n");
1033 else if (flags & NETFLAG_DATA)
1035 unsigned int temppacket[2];
1036 temppacket[0] = BigLong(8 | NETFLAG_ACK);
1037 temppacket[1] = BigLong(sequence);
1038 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
1039 if (sequence == conn->nq.receiveSequence)
1041 conn->lastMessageTime = realtime;
1042 conn->timeout = realtime + newtimeout;
1043 conn->nq.receiveSequence++;
1044 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1045 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1046 conn->receiveMessageLength += length;
1048 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1049 "Dropping the message!\n", sequence );
1050 conn->receiveMessageLength = 0;
1053 if (flags & NETFLAG_EOM)
1055 reliableMessagesReceived++;
1056 length = conn->receiveMessageLength;
1057 conn->receiveMessageLength = 0;
1060 SZ_Clear(&net_message);
1061 SZ_Write(&net_message, conn->receiveMessage, length);
1068 receivedDuplicateCount++;
1076 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1078 cls.connect_trying = false;
1079 M_Update_Return_Reason("");
1080 // the connection request succeeded, stop current connection and set up a new connection
1082 // if we're connecting to a remote server, shut down any local server
1083 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1084 Host_ShutdownServer ();
1085 // allocate a net connection to keep track of things
1086 cls.netcon = NetConn_Open(mysocket, peeraddress);
1087 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1088 key_dest = key_game;
1090 cls.demonum = -1; // not in the demo loop now
1091 cls.state = ca_connected;
1092 cls.signon = 0; // need all the signon messages before playing
1093 cls.protocol = initialprotocol;
1094 // reset move sequence numbering on this new connection
1095 cls.movesequence = 0;
1096 cls.servermovesequence = 0;
1097 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1098 Cmd_ForwardStringToServer("new");
1099 if (cls.protocol == PROTOCOL_QUAKE)
1101 // write a keepalive (clc_nop) as it seems to greatly improve the
1102 // chances of connecting to a netquake server
1104 unsigned char buf[4];
1105 memset(&msg, 0, sizeof(msg));
1107 msg.maxsize = sizeof(buf);
1108 MSG_WriteChar(&msg, clc_nop);
1109 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol);
1113 int NetConn_IsLocalGame(void)
1115 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1120 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1124 // search the cache for this server and update it
1125 for (n = 0;n < serverlist_cachecount;n++)
1126 if (!strcmp(addressstring, serverlist_cache[n].info.cname))
1128 if (n == serverlist_cachecount)
1130 // LAN search doesnt require an answer from the master server so we wont
1131 // know the ping nor will it be initialized already...
1134 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1137 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1138 // store the data the engine cares about (address and ping)
1139 strlcpy(serverlist_cache[serverlist_cachecount].info.cname, addressstring, sizeof(serverlist_cache[serverlist_cachecount].info.cname));
1140 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1141 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1142 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1143 // if not in the slist menu we should print the server to console
1144 if (serverlist_consoleoutput)
1145 Con_Printf("querying %s\n", addressstring);
1146 ++serverlist_cachecount;
1148 // if this is the first reply from this server, count it as having replied
1149 if (serverlist_cache[n].info.ping == 100000)
1151 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1152 pingtime = bound(0, pingtime, 9999);
1154 serverlist_cache[n].info.ping = min(serverlist_cache[n].info.ping, pingtime);
1155 // other server info is updated by the caller
1159 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1161 serverlist_info_t *info = &serverlist_cache[n].info;
1162 // update description strings for engine menu and console output
1163 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);
1164 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);
1165 if (serverlist_cache[n].query == SQS_QUERIED)
1166 ServerList_ViewList_Remove(&serverlist_cache[n]);
1167 // if not in the slist menu we should print the server to console (if wanted)
1168 else if( serverlist_consoleoutput )
1169 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1170 // and finally, update the view set
1171 ServerList_ViewList_Insert( &serverlist_cache[n] );
1172 serverlist_cache[n].query = SQS_QUERIED;
1175 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1177 qboolean fromserver;
1178 int ret, c, control;
1180 char *string, addressstring2[128], ipstring[32];
1181 char stringbuf[16384];
1183 // quakeworld ingame packet
1184 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1186 // convert the address to a string incase we need it
1187 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1189 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1191 // received a command string - strip off the packaging and put it
1192 // into our string buffer with NULL termination
1195 length = min(length, (int)sizeof(stringbuf) - 1);
1196 memcpy(stringbuf, data, length);
1197 stringbuf[length] = 0;
1200 if (developer_networking.integer)
1202 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1203 Com_HexDumpToConsole(data, length);
1206 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1208 // darkplaces or quake3
1209 char protocolnames[1400];
1210 Protocol_Names(protocolnames, sizeof(protocolnames));
1211 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1212 M_Update_Return_Reason("Got challenge response");
1213 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1214 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1215 // TODO: add userinfo stuff here instead of using NQ commands?
1216 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1219 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1221 // darkplaces or quake3
1222 M_Update_Return_Reason("Accepted");
1223 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1226 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1228 char rejectreason[32];
1229 cls.connect_trying = false;
1231 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1232 memcpy(rejectreason, string, length);
1233 rejectreason[length] = 0;
1234 M_Update_Return_Reason(rejectreason);
1237 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1239 serverlist_info_t *info;
1243 // search the cache for this server and update it
1244 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1248 info = &serverlist_cache[n].info;
1249 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1250 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1251 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1252 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1253 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1254 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1255 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1256 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1258 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1262 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1264 // Extract the IP addresses
1268 if (serverlist_consoleoutput)
1269 Con_Print("received DarkPlaces server list...\n");
1270 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1274 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], data[5] * 256 + data[6]);
1275 if (serverlist_consoleoutput && developer_networking.integer)
1276 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1277 // ignore the rest of the message if the serverlist is full
1278 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1280 // also ignore it if we have already queried it (other master server response)
1281 for( n = 0 ; n < serverlist_cachecount ; n++ )
1282 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1284 if( n >= serverlist_cachecount )
1288 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1289 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_DARKPLACES7;
1290 // store the data the engine cares about (address and ping)
1291 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1292 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1293 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1295 ++serverlist_cachecount;
1298 // move on to next address in packet
1302 // begin or resume serverlist queries
1303 serverlist_querysleep = false;
1304 serverlist_querywaittime = realtime + 3;
1307 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1309 // Extract the IP addresses
1313 if (serverlist_consoleoutput)
1314 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1315 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1319 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1320 if (serverlist_consoleoutput && developer_networking.integer)
1321 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1322 // ignore the rest of the message if the serverlist is full
1323 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1325 // also ignore it if we have already queried it (other master server response)
1326 for( n = 0 ; n < serverlist_cachecount ; n++ )
1327 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1329 if( n >= serverlist_cachecount )
1333 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1334 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_QUAKEWORLD;
1335 // store the data the engine cares about (address and ping)
1336 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1337 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1338 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1340 ++serverlist_cachecount;
1343 // move on to next address in packet
1347 // begin or resume serverlist queries
1348 serverlist_querysleep = false;
1349 serverlist_querywaittime = realtime + 3;
1352 if (!strncmp(string, "extResponse ", 12))
1354 ++net_extresponse_count;
1355 if(net_extresponse_count > NET_EXTRESPONSE_MAX)
1356 net_extresponse_count = NET_EXTRESPONSE_MAX;
1357 net_extresponse_last = (net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
1358 dpsnprintf(net_extresponse[net_extresponse_last], sizeof(net_extresponse[net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
1361 if (!strncmp(string, "ping", 4))
1363 if (developer.integer >= 10)
1364 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
1365 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1368 if (!strncmp(string, "ack", 3))
1370 // QuakeWorld compatibility
1371 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1373 // challenge message
1374 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1375 M_Update_Return_Reason("Got QuakeWorld challenge response");
1376 cls.qw_qport = qport.integer;
1377 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1378 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1379 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1382 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1385 M_Update_Return_Reason("QuakeWorld Accepted");
1386 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1389 if (length > 2 && !memcmp(string, "n\\", 2))
1391 serverlist_info_t *info;
1395 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1396 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1399 // search the cache for this server and update it
1400 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1404 info = &serverlist_cache[n].info;
1405 strlcpy(info->game, "QuakeWorld", sizeof(info->game));;
1406 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1407 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1408 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1410 info->numplayers = 0; // updated below
1411 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1412 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1414 // count active players on server
1415 // (we could gather more info, but we're just after the number)
1416 s = strchr(string, '\n');
1420 while (s < string + length)
1422 for (;s < string + length && *s != '\n';s++)
1424 if (s >= string + length)
1431 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1435 if (string[0] == 'n')
1438 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
1440 // we may not have liked the packet, but it was a command packet, so
1441 // we're done processing this packet now
1444 // quakeworld ingame packet
1445 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
1448 CL_ParseServerMessage();
1451 // netquake control packets, supported for compatibility only
1452 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1455 serverlist_info_t *info;
1459 SZ_Clear(&net_message);
1460 SZ_Write(&net_message, data, length);
1466 if (developer.integer >= 10)
1467 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1468 if (cls.connect_trying)
1470 lhnetaddress_t clientportaddress;
1471 clientportaddress = *peeraddress;
1472 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong());
1473 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1474 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1475 M_Update_Return_Reason("Accepted");
1476 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1480 if (developer.integer >= 10)
1481 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1482 cls.connect_trying = false;
1483 M_Update_Return_Reason((char *)MSG_ReadString());
1485 case CCREP_SERVER_INFO:
1486 if (developer.integer >= 10)
1487 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1488 // LordHavoc: because the quake server may report weird addresses
1489 // we just ignore it and keep the real address
1491 // search the cache for this server and update it
1492 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1496 info = &serverlist_cache[n].info;
1497 strlcpy(info->game, "Quake", sizeof(info->game));
1498 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
1499 strlcpy(info->name, MSG_ReadString(), sizeof(info->name));
1500 strlcpy(info->map , MSG_ReadString(), sizeof(info->map));
1501 info->numplayers = MSG_ReadByte();
1502 info->maxplayers = MSG_ReadByte();
1503 info->protocol = MSG_ReadByte();
1505 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1508 case CCREP_PLAYER_INFO:
1509 // we got a CCREP_PLAYER_INFO??
1510 //if (developer.integer >= 10)
1511 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1513 case CCREP_RULE_INFO:
1514 // we got a CCREP_RULE_INFO??
1515 //if (developer.integer >= 10)
1516 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1521 SZ_Clear(&net_message);
1522 // we may not have liked the packet, but it was a valid control
1523 // packet, so we're done processing this packet now
1527 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
1528 CL_ParseServerMessage();
1532 void NetConn_QueryQueueFrame(void)
1538 static double querycounter = 0;
1540 if (serverlist_querysleep)
1543 // apply a cool down time after master server replies,
1544 // to avoid messing up the ping times on the servers
1545 if (serverlist_querywaittime > realtime)
1548 // each time querycounter reaches 1.0 issue a query
1549 querycounter += cl.realframetime * net_slist_queriespersecond.value;
1550 maxqueries = (int)querycounter;
1551 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1552 querycounter -= maxqueries;
1554 if( maxqueries == 0 ) {
1558 // scan serverlist and issue queries as needed
1559 serverlist_querysleep = true;
1561 timeouttime = realtime - net_slist_timeout.value;
1562 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1564 serverlist_entry_t *entry = &serverlist_cache[ index ];
1565 if( entry->query != SQS_QUERYING )
1570 serverlist_querysleep = false;
1571 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1576 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1578 lhnetaddress_t address;
1581 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1582 if (entry->protocol == PROTOCOL_QUAKEWORLD)
1584 for (socket = 0; socket < cl_numsockets ; socket++)
1585 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
1589 for (socket = 0; socket < cl_numsockets ; socket++)
1590 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1593 //entry->querytime = realtime;
1594 entry->querytime = Sys_DoubleTime();
1595 entry->querycounter++;
1597 // if not in the slist menu we should print the server to console
1598 if (serverlist_consoleoutput)
1599 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1605 entry->query = SQS_TIMEDOUT;
1610 void NetConn_ClientFrame(void)
1613 lhnetaddress_t peeraddress;
1614 NetConn_UpdateSockets();
1615 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1617 if (cls.connect_remainingtries == 0)
1618 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1619 cls.connect_nextsendtime = realtime + 1;
1620 cls.connect_remainingtries--;
1621 if (cls.connect_remainingtries <= -10)
1623 cls.connect_trying = false;
1624 M_Update_Return_Reason("Connect: Failed");
1627 // try challenge first (newer DP server or QW)
1628 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1629 // then try netquake as a fallback (old server, or netquake)
1630 SZ_Clear(&net_message);
1631 // save space for the header, filled in later
1632 MSG_WriteLong(&net_message, 0);
1633 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1634 MSG_WriteString(&net_message, "QUAKE");
1635 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1636 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1637 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1638 SZ_Clear(&net_message);
1640 for (i = 0;i < cl_numsockets;i++)
1641 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1642 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1643 NetConn_QueryQueueFrame();
1644 if (cls.netcon && realtime > cls.netcon->timeout)
1646 Con_Print("Connection timed out\n");
1648 Host_ShutdownServer ();
1652 #define MAX_CHALLENGES 128
1655 lhnetaddress_t address;
1659 challenge[MAX_CHALLENGES];
1661 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1665 for (i = 0;i < bufferlength - 1;i++)
1669 c = rand () % (127 - 33) + 33;
1670 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1676 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1678 unsigned int nb_clients = 0, i;
1681 // How many clients are there?
1682 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1683 if (svs.clients[i].active)
1686 // TODO: we should add more information for the full status string
1687 length = dpsnprintf(out_msg, out_size,
1688 "\377\377\377\377%s\x0A"
1689 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
1690 "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
1693 fullstatus ? "statusResponse" : "infoResponse",
1694 gamename, com_modname, gameversion.integer, svs.maxclients,
1695 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1696 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1697 fullstatus ? "\n" : "");
1699 // Make sure it fits in the buffer
1708 ptr = out_msg + length;
1709 left = (int)out_size - length;
1711 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1713 client_t *cl = &svs.clients[i];
1716 int nameind, cleanind, pingvalue;
1718 char cleanname [sizeof(cl->name)];
1720 // Remove all characters '"' and '\' in the player name
1725 curchar = cl->name[nameind++];
1726 if (curchar != '"' && curchar != '\\')
1728 cleanname[cleanind++] = curchar;
1729 if (cleanind == sizeof(cleanname) - 1)
1732 } while (curchar != '\0');
1734 pingvalue = (int)(cl->ping * 1000.0f);
1735 if(cl->netconnection)
1736 pingvalue = bound(1, pingvalue, 9999);
1739 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1754 static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
1756 int floodslotnum, bestfloodslotnum;
1757 double bestfloodtime;
1758 lhnetaddress_t noportpeeraddress;
1759 // see if this is a connect flood
1760 noportpeeraddress = *peeraddress;
1761 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
1762 bestfloodslotnum = 0;
1763 bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
1764 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
1766 if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
1768 bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
1769 bestfloodslotnum = floodslotnum;
1771 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
1773 // this address matches an ongoing flood address
1774 if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
1776 // renew the ban on this address so it does not expire
1777 // until the flood has subsided
1778 sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
1779 //Con_Printf("Flood detected!\n");
1782 // the flood appears to have subsided, so allow this
1783 bestfloodslotnum = floodslotnum; // reuse the same slot
1787 // begin a new timeout on this address
1788 sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
1789 sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
1790 //Con_Printf("Flood detection initiated!\n");
1794 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
1797 lhnetaddress_t noportpeeraddress;
1798 // see if this is a connect flood
1799 noportpeeraddress = *peeraddress;
1800 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
1801 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
1803 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
1805 // this address matches an ongoing flood address
1807 sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
1808 sv.connectfloodaddresses[floodslotnum].lasttime = 0;
1809 //Con_Printf("Flood cleared!\n");
1814 extern void SV_SendServerinfo (client_t *client);
1815 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1817 int i, ret, clientnum, best;
1820 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1825 // convert the address to a string incase we need it
1826 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1828 // see if we can identify the sender as a local player
1829 // (this is necessary for rcon to send a reliable reply if the client is
1830 // actually on the server, not sending remotely)
1831 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1832 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1834 if (i == svs.maxclients)
1837 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1839 // received a command string - strip off the packaging and put it
1840 // into our string buffer with NULL termination
1843 length = min(length, (int)sizeof(stringbuf) - 1);
1844 memcpy(stringbuf, data, length);
1845 stringbuf[length] = 0;
1848 if (developer.integer >= 10)
1850 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1851 Com_HexDumpToConsole(data, length);
1854 if (length >= 12 && !memcmp(string, "getchallenge", 12) && sv_public.integer > -2)
1856 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1858 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1860 if (besttime > challenge[i].time)
1861 besttime = challenge[best = i].time;
1863 // if we did not find an exact match, choose the oldest and
1864 // update address and string
1865 if (i == MAX_CHALLENGES)
1868 challenge[i].address = *peeraddress;
1869 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1871 challenge[i].time = realtime;
1872 // send the challenge
1873 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1876 if (length > 8 && !memcmp(string, "connect\\", 8) && sv_public.integer > -2)
1881 if (!(s = SearchInfostring(string, "challenge")))
1883 // validate the challenge
1884 for (i = 0;i < MAX_CHALLENGES;i++)
1885 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1887 // if the challenge is not recognized, drop the packet
1888 if (i == MAX_CHALLENGES)
1891 // check engine protocol
1892 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1894 if (developer.integer >= 10)
1895 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1896 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1900 // see if this is a duplicate connection request or a disconnected
1901 // client who is rejoining to the same client slot
1902 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1904 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1906 // this is a known client...
1907 if (client->spawned)
1909 // client crashed and is coming back,
1910 // keep their stuff intact
1911 if (developer.integer >= 10)
1912 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
1913 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1915 SV_SendServerinfo(client);
1920 // client is still trying to connect,
1921 // so we send a duplicate reply
1922 if (developer.integer >= 10)
1923 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1924 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1930 if (NetConn_PreventConnectFlood(peeraddress))
1933 // find an empty client slot for this new client
1934 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1937 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
1939 // allocated connection
1940 if (developer.integer >= 10)
1941 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1942 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1943 // now set up the client
1945 SV_ConnectClient(clientnum, conn);
1947 NetConn_Heartbeat(1);
1952 // no empty slots found - server is full
1953 if (developer.integer >= 10)
1954 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1955 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1959 if (length >= 7 && !memcmp(string, "getinfo", 7) && sv_public.integer > -1)
1961 const char *challenge = NULL;
1963 // If there was a challenge in the getinfo message
1964 if (length > 8 && string[7] == ' ')
1965 challenge = string + 8;
1967 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1969 if (developer.integer >= 10)
1970 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1971 NetConn_WriteString(mysocket, response, peeraddress);
1975 if (length >= 9 && !memcmp(string, "getstatus", 9) && sv_public.integer > -1)
1977 const char *challenge = NULL;
1979 // If there was a challenge in the getinfo message
1980 if (length > 10 && string[9] == ' ')
1981 challenge = string + 10;
1983 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1985 if (developer.integer >= 10)
1986 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1987 NetConn_WriteString(mysocket, response, peeraddress);
1991 if (length >= 5 && !memcmp(string, "rcon ", 5))
1994 char *s = string + 5;
1996 for (i = 0;*s > ' ';s++)
1997 if (i < (int)sizeof(password) - 1)
2000 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
2002 // looks like a legitimate rcon command with the correct password
2003 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
2004 rcon_redirect = true;
2005 rcon_redirect_bufferpos = 0;
2006 Cmd_ExecuteString(s, src_command);
2007 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
2008 rcon_redirect = false;
2009 // print resulting text to client
2010 // if client is playing, send a reliable reply instead of
2014 // if the netconnection is loop, then this is the
2015 // local player on a listen mode server, and it would
2016 // result in duplicate printing to the console
2017 // (not that the local player should be using rcon
2018 // when they have the console)
2019 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2020 SV_ClientPrintf("%s", rcon_redirect_buffer);
2025 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
2026 NetConn_WriteString(mysocket, response, peeraddress);
2031 if (!strncmp(string, "ping", 4))
2033 if (developer.integer >= 10)
2034 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
2035 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
2038 if (!strncmp(string, "ack", 3))
2040 // we may not have liked the packet, but it was a command packet, so
2041 // we're done processing this packet now
2044 // netquake control packets, supported for compatibility only, and only
2045 // when running game protocols that are normally served via this connection
2047 // (this protects more modern protocols against being used for
2048 // Quake packet flood Denial Of Service attacks)
2049 if (length >= 5 && (i = BigLong(*((int *)data))) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3))
2053 const char *protocolname;
2056 SZ_Clear(&net_message);
2057 SZ_Write(&net_message, data, length);
2063 if (developer.integer >= 10)
2064 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
2065 if(sv_public.integer <= -2)
2068 protocolname = MSG_ReadString();
2069 protocolnumber = MSG_ReadByte();
2070 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
2072 if (developer.integer >= 10)
2073 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
2074 SZ_Clear(&net_message);
2075 // save space for the header, filled in later
2076 MSG_WriteLong(&net_message, 0);
2077 MSG_WriteByte(&net_message, CCREP_REJECT);
2078 MSG_WriteString(&net_message, "Incompatible version.\n");
2079 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2080 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2081 SZ_Clear(&net_message);
2085 // see if this connect request comes from a known client
2086 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2088 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2090 // this is either a duplicate connection request
2091 // or coming back from a timeout
2092 // (if so, keep their stuff intact)
2095 if (developer.integer >= 10)
2096 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
2097 SZ_Clear(&net_message);
2098 // save space for the header, filled in later
2099 MSG_WriteLong(&net_message, 0);
2100 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2101 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
2102 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2103 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2104 SZ_Clear(&net_message);
2106 // if client is already spawned, re-send the
2107 // serverinfo message as they'll need it to play
2108 if (client->spawned)
2111 SV_SendServerinfo(client);
2118 // this is a new client, check for connection flood
2119 if (NetConn_PreventConnectFlood(peeraddress))
2122 // find a slot for the new client
2123 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2126 if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
2128 // connect to the client
2129 // everything is allocated, just fill in the details
2130 strlcpy (conn->address, addressstring2, sizeof (conn->address));
2131 if (developer.integer >= 10)
2132 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
2133 // send back the info about the server connection
2134 SZ_Clear(&net_message);
2135 // save space for the header, filled in later
2136 MSG_WriteLong(&net_message, 0);
2137 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2138 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
2139 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2140 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2141 SZ_Clear(&net_message);
2142 // now set up the client struct
2144 SV_ConnectClient(clientnum, conn);
2146 NetConn_Heartbeat(1);
2151 if (developer.integer >= 10)
2152 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
2153 // no room; try to let player know
2154 SZ_Clear(&net_message);
2155 // save space for the header, filled in later
2156 MSG_WriteLong(&net_message, 0);
2157 MSG_WriteByte(&net_message, CCREP_REJECT);
2158 MSG_WriteString(&net_message, "Server is full.\n");
2159 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2160 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2161 SZ_Clear(&net_message);
2163 case CCREQ_SERVER_INFO:
2164 if (developer.integer >= 10)
2165 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
2166 if(sv_public.integer <= -1)
2168 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
2171 char myaddressstring[128];
2172 if (developer.integer >= 10)
2173 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
2174 SZ_Clear(&net_message);
2175 // save space for the header, filled in later
2176 MSG_WriteLong(&net_message, 0);
2177 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
2178 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
2179 MSG_WriteString(&net_message, myaddressstring);
2180 MSG_WriteString(&net_message, hostname.string);
2181 MSG_WriteString(&net_message, sv.name);
2182 // How many clients are there?
2183 for (i = 0, numclients = 0;i < svs.maxclients;i++)
2184 if (svs.clients[i].active)
2186 MSG_WriteByte(&net_message, numclients);
2187 MSG_WriteByte(&net_message, svs.maxclients);
2188 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2189 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2190 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2191 SZ_Clear(&net_message);
2194 case CCREQ_PLAYER_INFO:
2195 if (developer.integer >= 10)
2196 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
2197 if(sv_public.integer <= -1)
2201 int playerNumber, activeNumber, clientNumber;
2204 playerNumber = MSG_ReadByte();
2206 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
2207 if (client->active && ++activeNumber == playerNumber)
2209 if (clientNumber != svs.maxclients)
2211 SZ_Clear(&net_message);
2212 // save space for the header, filled in later
2213 MSG_WriteLong(&net_message, 0);
2214 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
2215 MSG_WriteByte(&net_message, playerNumber);
2216 MSG_WriteString(&net_message, client->name);
2217 MSG_WriteLong(&net_message, client->colors);
2218 MSG_WriteLong(&net_message, client->frags);
2219 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
2220 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
2221 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2222 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2223 SZ_Clear(&net_message);
2227 case CCREQ_RULE_INFO:
2228 if (developer.integer >= 10)
2229 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
2230 if(sv_public.integer <= -1)
2237 // find the search start location
2238 prevCvarName = MSG_ReadString();
2239 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
2241 // send the response
2242 SZ_Clear(&net_message);
2243 // save space for the header, filled in later
2244 MSG_WriteLong(&net_message, 0);
2245 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
2248 MSG_WriteString(&net_message, var->name);
2249 MSG_WriteString(&net_message, var->string);
2251 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2252 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2253 SZ_Clear(&net_message);
2259 SZ_Clear(&net_message);
2260 // we may not have liked the packet, but it was a valid control
2261 // packet, so we're done processing this packet now
2266 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
2269 SV_ReadClientMessage();
2277 void NetConn_ServerFrame(void)
2280 lhnetaddress_t peeraddress;
2281 for (i = 0;i < sv_numsockets;i++)
2282 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2283 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2284 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2286 // never timeout loopback connections
2287 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2289 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2291 SV_DropClient(false);
2297 void NetConn_SleepMicroseconds(int microseconds)
2299 LHNET_SleepUntilPacket_Microseconds(microseconds);
2302 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
2306 lhnetaddress_t masteraddress;
2307 lhnetaddress_t broadcastaddress;
2310 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2313 // 26000 is the default quake server port, servers on other ports will not
2315 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2316 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2320 for (i = 0;i < cl_numsockets;i++)
2324 // search LAN for Quake servers
2325 SZ_Clear(&net_message);
2326 // save space for the header, filled in later
2327 MSG_WriteLong(&net_message, 0);
2328 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2329 MSG_WriteString(&net_message, "QUAKE");
2330 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2331 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2332 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2333 SZ_Clear(&net_message);
2335 // search LAN for DarkPlaces servers
2336 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2338 // build the getservers message to send to the dpmaster master servers
2339 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2342 for (masternum = 0;sv_masters[masternum].name;masternum++)
2344 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2347 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2354 // only query QuakeWorld servers when the user wants to
2357 for (i = 0;i < cl_numsockets;i++)
2361 // search LAN for QuakeWorld servers
2362 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
2364 // build the getservers message to send to the qwmaster master servers
2365 // note this has no -1 prefix, and the trailing nul byte is sent
2366 dpsnprintf(request, sizeof(request), "c\n");
2369 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
2371 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2373 if (m_state != m_slist)
2375 char lookupstring[128];
2376 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
2377 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
2380 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
2386 if (!masterquerycount)
2388 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2389 M_Update_Return_Reason("No network");
2393 void NetConn_Heartbeat(int priority)
2395 lhnetaddress_t masteraddress;
2397 lhnetsocket_t *mysocket;
2399 // if it's a state change (client connected), limit next heartbeat to no
2400 // more than 30 sec in the future
2401 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2402 nextheartbeattime = realtime + 30.0;
2404 // limit heartbeatperiod to 30 to 270 second range,
2405 // lower limit is to avoid abusing master servers with excess traffic,
2406 // upper limit is to avoid timing out on the master server (which uses
2408 if (sv_heartbeatperiod.value < 30)
2409 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2410 if (sv_heartbeatperiod.value > 270)
2411 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2413 // make advertising optional and don't advertise singleplayer games, and
2414 // only send a heartbeat as often as the admin wants
2415 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2417 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2418 for (masternum = 0;sv_masters[masternum].name;masternum++)
2419 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2420 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2424 static void Net_Heartbeat_f(void)
2427 NetConn_Heartbeat(2);
2429 Con_Print("No server running, can not heartbeat to master server.\n");
2432 void PrintStats(netconn_t *conn)
2434 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2435 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2437 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2440 void Net_Stats_f(void)
2443 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2444 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2445 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2446 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2447 Con_Printf("packetsSent = %i\n", packetsSent);
2448 Con_Printf("packetsReSent = %i\n", packetsReSent);
2449 Con_Printf("packetsReceived = %i\n", packetsReceived);
2450 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2451 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2452 Con_Print("connections =\n");
2453 for (conn = netconn_list;conn;conn = conn->next)
2457 void Net_Slist_f(void)
2459 ServerList_ResetMasks();
2460 serverlist_sortbyfield = SLIF_PING;
2461 serverlist_sortdescending = false;
2462 if (m_state != m_slist) {
2463 Con_Print("Sending requests to master servers\n");
2464 ServerList_QueryList(true, false);
2465 serverlist_consoleoutput = true;
2466 Con_Print("Listening for replies...\n");
2468 ServerList_QueryList(true, false);
2471 void Net_SlistQW_f(void)
2473 ServerList_ResetMasks();
2474 serverlist_sortbyfield = SLIF_PING;
2475 serverlist_sortdescending = false;
2476 if (m_state != m_slist) {
2477 Con_Print("Sending requests to master servers\n");
2478 ServerList_QueryList(false, true);
2479 serverlist_consoleoutput = true;
2480 Con_Print("Listening for replies...\n");
2482 ServerList_QueryList(false, true);
2485 void NetConn_Init(void)
2488 lhnetaddress_t tempaddress;
2489 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2490 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2491 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
2492 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
2493 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2494 Cvar_RegisterVariable(&net_slist_queriespersecond);
2495 Cvar_RegisterVariable(&net_slist_queriesperframe);
2496 Cvar_RegisterVariable(&net_slist_timeout);
2497 Cvar_RegisterVariable(&net_slist_maxtries);
2498 Cvar_RegisterVariable(&net_messagetimeout);
2499 Cvar_RegisterVariable(&net_connecttimeout);
2500 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
2501 Cvar_RegisterVariable(&cl_netlocalping);
2502 Cvar_RegisterVariable(&cl_netpacketloss);
2503 Cvar_RegisterVariable(&hostname);
2504 Cvar_RegisterVariable(&developer_networking);
2505 Cvar_RegisterVariable(&cl_netport);
2506 Cvar_RegisterVariable(&sv_netport);
2507 Cvar_RegisterVariable(&net_address);
2508 //Cvar_RegisterVariable(&net_address_ipv6);
2509 Cvar_RegisterVariable(&sv_public);
2510 Cvar_RegisterVariable(&sv_heartbeatperiod);
2511 for (i = 0;sv_masters[i].name;i++)
2512 Cvar_RegisterVariable(&sv_masters[i]);
2513 Cvar_RegisterVariable(&gameversion);
2514 // 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.
2515 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2517 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2519 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
2520 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2523 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2525 // 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
2526 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2528 i = atoi(com_argv[i + 1]);
2529 if (i >= 0 && i < 65536)
2531 Con_Printf("-port option used, setting port cvar to %i\n", i);
2532 Cvar_SetValueQuick(&sv_netport, i);
2535 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2539 net_message.data = net_message_buf;
2540 net_message.maxsize = sizeof(net_message_buf);
2541 net_message.cursize = 0;
2545 void NetConn_Shutdown(void)
2547 NetConn_CloseClientPorts();
2548 NetConn_CloseServerPorts();