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 MASTER_PORT 27950
28 // note this defaults on for dedicated servers, off for listen servers
29 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)"};
30 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
32 // FIXME: resolve DNS on masters whenever their value changes and cache it (to avoid major delays in active servers when they heartbeat)
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 double nextheartbeattime = 0;
48 sizebuf_t net_message;
49 static unsigned char net_message_buf[NET_MAXMESSAGE];
51 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
52 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)"};
53 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)"};
54 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
55 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
57 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)"};
58 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)"};
59 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
60 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)"};
61 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
62 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)"};
64 /* statistic counters */
65 static int packetsSent = 0;
66 static int packetsReSent = 0;
67 static int packetsReceived = 0;
68 static int receivedDuplicateCount = 0;
69 static int droppedDatagrams = 0;
71 static int unreliableMessagesSent = 0;
72 static int unreliableMessagesReceived = 0;
73 static int reliableMessagesSent = 0;
74 static int reliableMessagesReceived = 0;
76 double masterquerytime = -1000;
77 int masterquerycount = 0;
78 int masterreplycount = 0;
79 int serverquerycount = 0;
80 int serverreplycount = 0;
82 // this is only false if there are still servers left to query
83 int serverlist_querysleep = true;
85 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
86 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
89 lhnetsocket_t *cl_sockets[16];
91 lhnetsocket_t *sv_sockets[16];
93 netconn_t *netconn_list = NULL;
94 mempool_t *netconn_mempool = NULL;
96 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
97 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
98 cvar_t net_address = {0, "net_address", "0.0.0.0", "network address to open ports on"};
99 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]", "network address to open ipv6 ports on"};
101 // ServerList interface
102 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
103 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
105 serverlist_infofield_t serverlist_sortbyfield;
106 qboolean serverlist_sortdescending;
108 int serverlist_viewcount = 0;
109 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
111 int serverlist_cachecount;
112 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
114 qboolean serverlist_consoleoutput;
116 // helper function to insert a value into the viewset
117 // spare entries will be removed
118 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
121 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
122 i = serverlist_viewcount++;
124 i = SERVERLIST_VIEWLISTSIZE - 1;
127 for( ; i > index ; i-- )
128 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
130 serverlist_viewlist[index] = entry;
133 // we suppose serverlist_viewcount to be valid, ie > 0
134 static void _ServerList_ViewList_Helper_Remove( int index )
136 serverlist_viewcount--;
137 for( ; index < serverlist_viewcount ; index++ )
138 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
141 // returns true if A should be inserted before B
142 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
144 int result = 0; // > 0 if for numbers A > B and for text if A < B
146 switch( serverlist_sortbyfield ) {
148 result = A->info.ping - B->info.ping;
150 case SLIF_MAXPLAYERS:
151 result = A->info.maxplayers - B->info.maxplayers;
153 case SLIF_NUMPLAYERS:
154 result = A->info.numplayers - B->info.numplayers;
157 result = A->info.protocol - B->info.protocol;
160 result = strcmp( B->info.cname, A->info.cname );
163 result = strcmp( B->info.game, A->info.game );
166 result = strcmp( B->info.map, A->info.map );
169 result = strcmp( B->info.mod, A->info.mod );
172 result = strcmp( B->info.name, A->info.name );
175 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
179 if( serverlist_sortdescending )
184 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
186 // This should actually be done with some intermediate and end-of-function return
198 case SLMO_GREATEREQUAL:
200 case SLMO_NOTCONTAIN:
203 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
208 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
211 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
212 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
213 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
215 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
216 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
219 // Same here, also using an intermediate & final return would be more appropriate
223 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
224 case SLMO_NOTCONTAIN:
225 return !*bufferB || !strstr( bufferA, bufferB );
227 return strcmp( bufferA, bufferB ) < 0;
229 return strcmp( bufferA, bufferB ) <= 0;
231 return strcmp( bufferA, bufferB ) == 0;
233 return strcmp( bufferA, bufferB ) > 0;
235 return strcmp( bufferA, bufferB ) != 0;
236 case SLMO_GREATEREQUAL:
237 return strcmp( bufferA, bufferB ) >= 0;
239 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
244 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
246 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
248 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
250 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
252 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
254 if( *mask->info.cname
255 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
258 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
261 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
264 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
267 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
272 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
276 // FIXME: change this to be more readable (...)
277 // now check whether it passes through the masks
278 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
279 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
282 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
283 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
285 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
288 if( !serverlist_viewcount ) {
289 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
292 // ok, insert it, we just need to find out where exactly:
295 // check whether to insert it as new first item
296 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
297 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
299 } // check whether to insert it as new last item
300 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
301 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
305 end = serverlist_viewcount - 1;
306 while( end > start + 1 )
308 mid = (start + end) / 2;
309 // test the item that lies in the middle between start and end
310 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
311 // the item has to be in the upper half
314 // the item has to be in the lower half
317 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
320 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
323 for( i = 0; i < serverlist_viewcount; i++ )
325 if (serverlist_viewlist[i] == entry)
327 _ServerList_ViewList_Helper_Remove(i);
333 void ServerList_RebuildViewList(void)
337 serverlist_viewcount = 0;
338 for( i = 0 ; i < serverlist_cachecount ; i++ )
339 if( serverlist_cache[i].query == SQS_QUERIED )
340 ServerList_ViewList_Insert( &serverlist_cache[i] );
343 void ServerList_ResetMasks(void)
345 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
346 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
350 static void _ServerList_Test(void)
353 for( i = 0 ; i < 1024 ; i++ ) {
354 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
355 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
356 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
357 serverlist_cache[serverlist_cachecount].finished = true;
358 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
359 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
360 serverlist_cachecount++;
365 void ServerList_QueryList(void)
367 masterquerytime = realtime;
368 masterquerycount = 0;
369 masterreplycount = 0;
370 serverquerycount = 0;
371 serverreplycount = 0;
372 serverlist_cachecount = 0;
373 serverlist_viewcount = 0;
374 serverlist_consoleoutput = false;
376 //_ServerList_Test();
378 NetConn_QueryMasters();
383 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
385 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
389 if (cl_netpacketloss.integer)
390 for (i = 0;i < cl_numsockets;i++)
391 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
393 if (developer_networking.integer)
395 char addressstring[128], addressstring2[128];
396 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
399 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
400 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
401 Com_HexDumpToConsole((unsigned char *)data, length);
404 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
409 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
413 if (cl_netpacketloss.integer)
414 for (i = 0;i < cl_numsockets;i++)
415 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
417 ret = LHNET_Write(mysocket, data, length, peeraddress);
418 if (developer_networking.integer)
420 char addressstring[128], addressstring2[128];
421 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
422 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
423 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
424 Com_HexDumpToConsole((unsigned char *)data, length);
429 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
431 // note this does not include the trailing NULL because we add that in the parser
432 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
435 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol)
437 if (protocol == PROTOCOL_QUAKEWORLD)
440 qboolean sendreliable;
442 // note that it is ok to send empty messages to the qw server,
443 // otherwise it won't respond to us at all
445 sendreliable = false;
446 // if the remote side dropped the last reliable message, resend it
447 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
449 // if the reliable transmit buffer is empty, copy the current message out
450 if (!conn->sendMessageLength && conn->message.cursize)
452 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
453 conn->sendMessageLength = conn->message.cursize;
454 SZ_Clear(&conn->message); // clear the message buffer
455 conn->qw.reliable_sequence ^= 1;
458 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
459 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
460 // last received unreliable packet number, and last received reliable packet number (0 or 1)
461 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
463 conn->qw.outgoing_sequence++;
464 // client sends qport in every packet
465 if (conn == cls.netcon)
467 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
470 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
472 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
475 // add the reliable message if there is one
478 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
479 packetLen += conn->sendMessageLength;
480 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
482 // add the unreliable message if possible
483 if (packetLen + data->cursize <= 1400)
485 memcpy(sendbuffer + packetLen, data->data, data->cursize);
486 packetLen += data->cursize;
489 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
492 unreliableMessagesSent++;
494 // delay later packets to obey rate limit
495 conn->qw.cleartime = max(conn->qw.cleartime, realtime) + packetLen * conn->qw.rate;
501 unsigned int packetLen;
502 unsigned int dataLen;
504 unsigned int *header;
506 // if a reliable message fragment has been lost, send it again
507 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
509 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
511 dataLen = conn->sendMessageLength;
516 dataLen = MAX_PACKETFRAGMENT;
520 packetLen = NET_HEADERSIZE + dataLen;
522 header = (unsigned int *)sendbuffer;
523 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
524 header[1] = BigLong(conn->nq.sendSequence - 1);
525 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
527 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
529 conn->lastSendTime = realtime;
534 // if we have a new reliable message to send, do so
535 if (!conn->sendMessageLength && conn->message.cursize)
537 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
539 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, sizeof(conn->sendMessage));
540 conn->message.overflowed = true;
544 if (developer_networking.integer && conn == cls.netcon)
546 Con_Print("client sending reliable message to server:\n");
547 SZ_HexDumpToConsole(&conn->message);
550 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
551 conn->sendMessageLength = conn->message.cursize;
552 SZ_Clear(&conn->message);
554 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
556 dataLen = conn->sendMessageLength;
561 dataLen = MAX_PACKETFRAGMENT;
565 packetLen = NET_HEADERSIZE + dataLen;
567 header = (unsigned int *)sendbuffer;
568 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
569 header[1] = BigLong(conn->nq.sendSequence);
570 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
572 conn->nq.sendSequence++;
574 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
576 conn->lastSendTime = realtime;
578 reliableMessagesSent++;
581 // if we have an unreliable message to send, do so
584 packetLen = NET_HEADERSIZE + data->cursize;
586 if (packetLen > (int)sizeof(sendbuffer))
588 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
592 header = (unsigned int *)sendbuffer;
593 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
594 header[1] = BigLong(conn->nq.unreliableSendSequence);
595 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
597 conn->nq.unreliableSendSequence++;
599 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
602 unreliableMessagesSent++;
608 void NetConn_CloseClientPorts(void)
610 for (;cl_numsockets > 0;cl_numsockets--)
611 if (cl_sockets[cl_numsockets - 1])
612 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
615 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
617 lhnetaddress_t address;
619 char addressstring2[1024];
620 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
622 if ((s = LHNET_OpenSocket_Connectionless(&address)))
624 cl_sockets[cl_numsockets++] = s;
625 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
626 Con_Printf("Client opened a socket on address %s\n", addressstring2);
630 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
631 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
635 Con_Printf("Client unable to parse address %s\n", addressstring);
638 void NetConn_OpenClientPorts(void)
641 NetConn_CloseClientPorts();
642 port = bound(0, cl_netport.integer, 65535);
643 if (cl_netport.integer != port)
644 Cvar_SetValueQuick(&cl_netport, port);
645 Con_Printf("Client using port %i\n", port);
646 NetConn_OpenClientPort("local:2", 0);
647 NetConn_OpenClientPort(net_address.string, port);
648 //NetConn_OpenClientPort(net_address_ipv6.string, port);
651 void NetConn_CloseServerPorts(void)
653 for (;sv_numsockets > 0;sv_numsockets--)
654 if (sv_sockets[sv_numsockets - 1])
655 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
658 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
660 lhnetaddress_t address;
663 char addressstring2[1024];
665 for (port = defaultport; port <= defaultport + 100; port++)
667 if (LHNETADDRESS_FromString(&address, addressstring, port))
669 if ((s = LHNET_OpenSocket_Connectionless(&address)))
671 sv_sockets[sv_numsockets++] = s;
672 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
673 Con_Printf("Server listening on address %s\n", addressstring2);
678 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
679 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
684 Con_Printf("Server unable to parse address %s\n", addressstring);
685 // if it cant parse one address, it wont be able to parse another for sure
691 void NetConn_OpenServerPorts(int opennetports)
694 NetConn_CloseServerPorts();
695 NetConn_UpdateSockets();
696 port = bound(0, sv_netport.integer, 65535);
699 Con_Printf("Server using port %i\n", port);
700 if (sv_netport.integer != port)
701 Cvar_SetValueQuick(&sv_netport, port);
702 if (cls.state != ca_dedicated)
703 NetConn_OpenServerPort("local:1", 0);
706 NetConn_OpenServerPort(net_address.string, port);
707 //NetConn_OpenServerPort(net_address_ipv6.string, port);
709 if (sv_numsockets == 0)
710 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
713 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
715 int i, a = LHNETADDRESS_GetAddressType(address);
716 for (i = 0;i < cl_numsockets;i++)
717 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
718 return cl_sockets[i];
722 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
724 int i, a = LHNETADDRESS_GetAddressType(address);
725 for (i = 0;i < sv_numsockets;i++)
726 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
727 return sv_sockets[i];
731 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
734 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
735 conn->mysocket = mysocket;
736 conn->peeraddress = *peeraddress;
737 conn->lastMessageTime = realtime;
738 conn->message.data = conn->messagedata;
739 conn->message.maxsize = sizeof(conn->messagedata);
740 conn->message.cursize = 0;
741 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
742 // reduce effectiveness of connection request floods
743 conn->timeout = realtime + net_connecttimeout.value;
744 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
745 conn->next = netconn_list;
750 void NetConn_Close(netconn_t *conn)
753 // remove connection from list
754 if (conn == netconn_list)
755 netconn_list = conn->next;
758 for (c = netconn_list;c;c = c->next)
762 c->next = conn->next;
766 // not found in list, we'll avoid crashing here...
774 static int clientport = -1;
775 static int clientport2 = -1;
776 static int hostport = -1;
777 void NetConn_UpdateSockets(void)
779 if (cls.state != ca_dedicated)
781 if (clientport2 != cl_netport.integer)
783 clientport2 = cl_netport.integer;
784 if (cls.state == ca_connected)
785 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
787 if (cls.state == ca_disconnected && clientport != clientport2)
789 clientport = clientport2;
790 NetConn_CloseClientPorts();
792 if (cl_numsockets == 0)
793 NetConn_OpenClientPorts();
796 if (hostport != sv_netport.integer)
798 hostport = sv_netport.integer;
800 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
804 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol)
809 if (protocol == PROTOCOL_QUAKEWORLD)
811 int sequence, sequence_ack;
812 int reliable_ack, reliable_message;
816 sequence = LittleLong(*((int *)(data + 0)));
817 sequence_ack = LittleLong(*((int *)(data + 4)));
821 if (conn != cls.netcon)
826 // 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?)
827 qport = LittleShort(*((int *)(data + 8)));
833 reliable_message = (sequence >> 31) & 1;
834 reliable_ack = (sequence_ack >> 31) & 1;
835 sequence &= ~(1<<31);
836 sequence_ack &= ~(1<<31);
837 if (sequence <= conn->qw.incoming_sequence)
839 Con_DPrint("Got a stale datagram\n");
842 count = sequence - (conn->qw.incoming_sequence + 1);
845 droppedDatagrams += count;
846 Con_DPrintf("Dropped %u datagram(s)\n", count);
848 if (reliable_ack == conn->qw.reliable_sequence)
850 // received, now we will be able to send another reliable message
851 conn->sendMessageLength = 0;
852 reliableMessagesReceived++;
854 conn->qw.incoming_sequence = sequence;
855 conn->qw.incoming_acknowledged = sequence_ack;
856 conn->qw.incoming_reliable_acknowledged = reliable_ack;
857 if (reliable_message)
858 conn->qw.incoming_reliable_sequence ^= 1;
859 conn->lastMessageTime = realtime;
860 conn->timeout = realtime + net_messagetimeout.value;
861 unreliableMessagesReceived++;
862 SZ_Clear(&net_message);
863 SZ_Write(&net_message, data, length);
871 unsigned int sequence;
874 qlength = (unsigned int)BigLong(((int *)data)[0]);
875 flags = qlength & ~NETFLAG_LENGTH_MASK;
876 qlength &= NETFLAG_LENGTH_MASK;
877 // control packets were already handled
878 if (!(flags & NETFLAG_CTL) && qlength == length)
880 sequence = BigLong(((int *)data)[1]);
884 if (flags & NETFLAG_UNRELIABLE)
886 if (sequence >= conn->nq.unreliableReceiveSequence)
888 if (sequence > conn->nq.unreliableReceiveSequence)
890 count = sequence - conn->nq.unreliableReceiveSequence;
891 droppedDatagrams += count;
892 Con_DPrintf("Dropped %u datagram(s)\n", count);
894 conn->nq.unreliableReceiveSequence = sequence + 1;
895 conn->lastMessageTime = realtime;
896 conn->timeout = realtime + net_messagetimeout.value;
897 unreliableMessagesReceived++;
900 SZ_Clear(&net_message);
901 SZ_Write(&net_message, data, length);
907 Con_DPrint("Got a stale datagram\n");
910 else if (flags & NETFLAG_ACK)
912 if (sequence == (conn->nq.sendSequence - 1))
914 if (sequence == conn->nq.ackSequence)
916 conn->nq.ackSequence++;
917 if (conn->nq.ackSequence != conn->nq.sendSequence)
918 Con_DPrint("ack sequencing error\n");
919 conn->lastMessageTime = realtime;
920 conn->timeout = realtime + net_messagetimeout.value;
921 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
923 unsigned int packetLen;
924 unsigned int dataLen;
926 unsigned int *header;
928 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
929 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
931 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
933 dataLen = conn->sendMessageLength;
938 dataLen = MAX_PACKETFRAGMENT;
942 packetLen = NET_HEADERSIZE + dataLen;
944 header = (unsigned int *)sendbuffer;
945 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
946 header[1] = BigLong(conn->nq.sendSequence);
947 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
949 conn->nq.sendSequence++;
951 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
953 conn->lastSendTime = realtime;
958 conn->sendMessageLength = 0;
961 Con_DPrint("Duplicate ACK received\n");
964 Con_DPrint("Stale ACK received\n");
967 else if (flags & NETFLAG_DATA)
969 unsigned int temppacket[2];
970 temppacket[0] = BigLong(8 | NETFLAG_ACK);
971 temppacket[1] = BigLong(sequence);
972 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
973 if (sequence == conn->nq.receiveSequence)
975 conn->lastMessageTime = realtime;
976 conn->timeout = realtime + net_messagetimeout.value;
977 conn->nq.receiveSequence++;
978 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
979 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
980 conn->receiveMessageLength += length;
982 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
983 "Dropping the message!\n", sequence );
984 conn->receiveMessageLength = 0;
987 if (flags & NETFLAG_EOM)
989 reliableMessagesReceived++;
990 length = conn->receiveMessageLength;
991 conn->receiveMessageLength = 0;
994 SZ_Clear(&net_message);
995 SZ_Write(&net_message, conn->receiveMessage, length);
1002 receivedDuplicateCount++;
1010 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1012 cls.connect_trying = false;
1013 M_Update_Return_Reason("");
1014 // the connection request succeeded, stop current connection and set up a new connection
1016 // if we're connecting to a remote server, shut down any local server
1017 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1018 Host_ShutdownServer ();
1019 // allocate a net connection to keep track of things
1020 cls.netcon = NetConn_Open(mysocket, peeraddress);
1021 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1022 key_dest = key_game;
1024 cls.demonum = -1; // not in the demo loop now
1025 cls.state = ca_connected;
1026 cls.signon = 0; // need all the signon messages before playing
1027 cls.protocol = initialprotocol;
1028 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1029 Cmd_ForwardStringToServer("new");
1032 int NetConn_IsLocalGame(void)
1034 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1039 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1041 qboolean fromserver;
1042 int ret, c, control;
1044 char *string, addressstring2[128], cname[128], ipstring[32];
1045 char stringbuf[16384];
1047 // quakeworld ingame packet
1048 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1050 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1052 // received a command string - strip off the packaging and put it
1053 // into our string buffer with NULL termination
1056 length = min(length, (int)sizeof(stringbuf) - 1);
1057 memcpy(stringbuf, data, length);
1058 stringbuf[length] = 0;
1061 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1063 if (developer.integer)
1065 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1066 Com_HexDumpToConsole(data, length);
1069 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1071 // darkplaces or quake3
1072 char protocolnames[1400];
1073 Protocol_Names(protocolnames, sizeof(protocolnames));
1074 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1075 M_Update_Return_Reason("Got challenge response");
1076 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1079 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')))
1082 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1083 Con_Printf("\"%s\" received, sending QuakeWorld connect request back to %s\n", string, addressstring2);
1084 M_Update_Return_Reason("Got QuakeWorld challenge response");
1085 cls.qw_qport = qport.integer;
1086 NetConn_WriteString(mysocket, va("\377\377\377\377connect 28 %i %i \"%s\"\n", cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1088 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1090 // darkplaces or quake3
1091 M_Update_Return_Reason("Accepted");
1092 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1095 if (length > 1 && string[0] == 'j' && cls.connect_trying)
1098 M_Update_Return_Reason("QuakeWorld Accepted");
1099 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1102 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1104 char rejectreason[32];
1105 cls.connect_trying = false;
1107 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1108 memcpy(rejectreason, string, length);
1109 rejectreason[length] = 0;
1110 M_Update_Return_Reason(rejectreason);
1113 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1115 serverlist_info_t *info;
1120 // serverlist only uses text addresses
1121 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1122 // search the cache for this server and update it
1123 for( n = 0; n < serverlist_cachecount; n++ )
1124 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1126 if( n == serverlist_cachecount ) {
1127 // LAN search doesnt require an answer from the master server so we wont
1128 // know the ping nor will it be initialized already...
1131 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1134 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1135 // store the data the engine cares about (address and ping)
1136 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1137 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1138 serverlist_cache[serverlist_cachecount].querytime = realtime;
1139 // if not in the slist menu we should print the server to console
1140 if (serverlist_consoleoutput) {
1141 Con_Printf("querying %s\n", ipstring);
1144 ++serverlist_cachecount;
1147 info = &serverlist_cache[n].info;
1148 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1149 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1150 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1151 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1152 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1153 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1154 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1156 if (info->ping == 100000)
1159 pingtime = (int)((realtime - serverlist_cache[n].querytime) * 1000.0);
1160 pingtime = bound(0, pingtime, 9999);
1162 info->ping = pingtime;
1164 // legacy/old stuff move it to the menu ASAP
1166 // build description strings for the things users care about
1167 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "%c%c%5d%c%c%c%3u/%3u %-65.65s", STRING_COLOR_TAG, pingtime >= 300 ? '1' : (pingtime >= 200 ? '3' : '7'), (int)pingtime, STRING_COLOR_TAG, STRING_COLOR_DEFAULT + '0', info->protocol != NET_PROTOCOL_VERSION ? '*' : ' ', info->numplayers, info->maxplayers, info->name);
1168 dpsnprintf(serverlist_cache[n].line2, sizeof(serverlist_cache[n].line2), "%-21.21s %-19.19s %-17.17s %-20.20s", info->cname, info->game, info->mod, info->map);
1169 if( serverlist_cache[n].query == SQS_QUERIED ) {
1170 ServerList_ViewList_Remove( &serverlist_cache[n] );
1172 // if not in the slist menu we should print the server to console (if wanted)
1173 else if( serverlist_consoleoutput )
1174 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1175 // and finally, update the view set
1176 ServerList_ViewList_Insert( &serverlist_cache[n] );
1177 serverlist_cache[n].query = SQS_QUERIED;
1181 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1183 // Extract the IP addresses
1187 if (serverlist_consoleoutput)
1188 Con_Print("received server list...\n");
1189 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1193 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], (data[5] << 8) | data[6]);
1194 if (developer.integer)
1195 Con_Printf("Requesting info from server %s\n", ipstring);
1196 // ignore the rest of the message if the serverlist is full
1197 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1199 // also ignore it if we have already queried it (other master server response)
1200 for( n = 0 ; n < serverlist_cachecount ; n++ )
1201 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1203 if( n >= serverlist_cachecount )
1207 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1208 // store the data the engine cares about (address and ping)
1209 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1210 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1211 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1213 ++serverlist_cachecount;
1216 // move on to next address in packet
1220 // begin or resume serverlist queries
1221 serverlist_querysleep = false;
1225 if (!strncmp(string, "ping", 4))
1227 if (developer.integer)
1228 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1229 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1232 if (!strncmp(string, "ack", 3))
1235 // QuakeWorld compatibility
1236 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1239 M_Update_Return_Reason("Accepted");
1240 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1243 if (length > 1 && string[0] == 'c' && string[1] >= '0' && string[1] <= '9' && cls.connect_trying)
1245 // challenge message
1246 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1247 Con_Printf("challenge %s received, sending connect request back to %s\n", string + 1, addressstring2);
1248 M_Update_Return_Reason("Got challenge response");
1249 cls.qw_qport = qport.integer;
1250 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1251 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "name", cl_name.string);
1252 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "topcolor", va("%i", (cl_color.integer >> 4) & 15));
1253 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "bottomcolor", va("%i", (cl_color.integer) & 15));
1254 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "rate", va("%i", cl_rate.integer));
1255 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "msg", "1");
1256 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ver", engineversion);
1257 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1260 if (string[0] == 'n')
1263 Con_Printf("QW print command from server at %s:\n", addressstring2, string + 1);
1265 // we may not have liked the packet, but it was a command packet, so
1266 // we're done processing this packet now
1269 // quakeworld ingame packet
1270 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1273 CL_ParseServerMessage();
1276 // netquake control packets, supported for compatibility only
1277 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1282 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1286 if (developer.integer)
1287 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1288 if (cls.connect_trying)
1290 lhnetaddress_t clientportaddress;
1291 clientportaddress = *peeraddress;
1294 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
1297 LHNETADDRESS_SetPort(&clientportaddress, port);
1299 M_Update_Return_Reason("Accepted");
1300 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1304 if (developer.integer)
1305 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1306 cls.connect_trying = false;
1307 M_Update_Return_Reason((char *)data);
1310 case CCREP_SERVER_INFO:
1311 if (developer.integer)
1312 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1313 if (cls.state != ca_dedicated)
1315 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
1316 // string we just ignore it and keep the real address
1318 // serverlist only uses text addresses
1319 cname = UDP_AddrToString(readaddr);
1320 // search the cache for this server
1321 for (n = 0; n < hostCacheCount; n++)
1322 if (!strcmp(cname, serverlist[n].cname))
1325 if (n == hostCacheCount && hostCacheCount < SERVERLISTSIZE)
1328 memset(&serverlist[n], 0, sizeof(serverlist[n]));
1329 strlcpy (serverlist[n].name, MSG_ReadString(), sizeof (serverlist[n].name));
1330 strlcpy (serverlist[n].map, MSG_ReadString(), sizeof (serverlist[n].map));
1331 serverlist[n].users = MSG_ReadByte();
1332 serverlist[n].maxusers = MSG_ReadByte();
1334 if (c != NET_PROTOCOL_VERSION)
1336 strlcpy (serverlist[n].cname, serverlist[n].name, sizeof (serverlist[n].cname));
1337 strcpy(serverlist[n].name, "*");
1338 strlcat (serverlist[n].name, serverlist[n].cname, sizeof(serverlist[n].name));
1340 strlcpy (serverlist[n].cname, cname, sizeof (serverlist[n].cname));
1344 case CCREP_PLAYER_INFO:
1345 // we got a CCREP_PLAYER_INFO??
1346 //if (developer.integer)
1347 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1349 case CCREP_RULE_INFO:
1350 // we got a CCREP_RULE_INFO??
1351 //if (developer.integer)
1352 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1358 // we may not have liked the packet, but it was a valid control
1359 // packet, so we're done processing this packet now
1363 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1364 CL_ParseServerMessage();
1368 void NetConn_QueryQueueFrame(void)
1374 static double querycounter = 0;
1376 if (serverlist_querysleep)
1379 // each time querycounter reaches 1.0 issue a query
1380 querycounter += host_realframetime * net_slist_queriespersecond.value;
1381 maxqueries = (int)querycounter;
1382 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1383 querycounter -= maxqueries;
1385 if( maxqueries == 0 ) {
1389 // scan serverlist and issue queries as needed
1390 serverlist_querysleep = true;
1392 timeouttime = realtime - net_slist_timeout.value;
1393 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1395 serverlist_entry_t *entry = &serverlist_cache[ index ];
1396 if( entry->query != SQS_QUERYING )
1401 serverlist_querysleep = false;
1402 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1407 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1409 lhnetaddress_t address;
1412 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1413 for (socket = 0; socket < cl_numsockets ; socket++) {
1414 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1417 entry->querytime = realtime;
1418 entry->querycounter++;
1420 // if not in the slist menu we should print the server to console
1421 if (serverlist_consoleoutput)
1422 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1428 entry->query = SQS_TIMEDOUT;
1433 void NetConn_ClientFrame(void)
1436 lhnetaddress_t peeraddress;
1437 NetConn_UpdateSockets();
1438 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1440 if (cls.connect_remainingtries == 0)
1441 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1442 cls.connect_nextsendtime = realtime + 1;
1443 cls.connect_remainingtries--;
1444 if (cls.connect_remainingtries <= -10)
1446 cls.connect_trying = false;
1447 M_Update_Return_Reason("Connect: Failed");
1450 // try challenge first (newer DP server or QW)
1451 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1452 // then try netquake as a fallback (old server, or netquake)
1453 SZ_Clear(&net_message);
1454 // save space for the header, filled in later
1455 MSG_WriteLong(&net_message, 0);
1456 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1457 MSG_WriteString(&net_message, "QUAKE");
1458 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1459 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1460 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1461 SZ_Clear(&net_message);
1463 for (i = 0;i < cl_numsockets;i++)
1464 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1465 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1466 NetConn_QueryQueueFrame();
1467 if (cls.netcon && realtime > cls.netcon->timeout)
1469 Con_Print("Connection timed out\n");
1471 Host_ShutdownServer ();
1475 #define MAX_CHALLENGES 128
1478 lhnetaddress_t address;
1482 challenge[MAX_CHALLENGES];
1484 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1488 for (i = 0;i < bufferlength - 1;i++)
1492 c = rand () % (127 - 33) + 33;
1493 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1499 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1501 unsigned int nb_clients = 0, i;
1504 // How many clients are there?
1505 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1506 if (svs.clients[i].active)
1509 // TODO: we should add more information for the full status string
1510 length = dpsnprintf(out_msg, out_size,
1511 "\377\377\377\377%s\x0A"
1512 "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
1513 "\\clients\\%d\\mapname\\%s\\hostname\\%s""\\protocol\\%d"
1516 fullstatus ? "statusResponse" : "infoResponse",
1517 gamename, com_modname, svs.maxclients,
1518 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1519 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1520 fullstatus ? "\n" : "");
1522 // Make sure it fits in the buffer
1531 ptr = out_msg + length;
1532 left = (int)out_size - length;
1534 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1536 client_t *cl = &svs.clients[i];
1539 int nameind, cleanind;
1541 char cleanname [sizeof(cl->name)];
1543 // Remove all characters '"' and '\' in the player name
1548 curchar = cl->name[nameind++];
1549 if (curchar != '"' && curchar != '\\')
1551 cleanname[cleanind++] = curchar;
1552 if (cleanind == sizeof(cleanname) - 1)
1555 } while (curchar != '\0');
1557 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1559 (int)(cl->ping * 1000.0f),
1572 extern void SV_SendServerinfo (client_t *client);
1573 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1575 int i, ret, clientnum, best;
1579 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1581 // see if we can identify the sender as a local player
1582 // (this is necessary for rcon to send a reliable reply if the client is
1583 // actually on the server, not sending remotely)
1584 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1585 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1587 if (i == svs.maxclients)
1592 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1594 // received a command string - strip off the packaging and put it
1595 // into our string buffer with NULL termination
1598 length = min(length, (int)sizeof(stringbuf) - 1);
1599 memcpy(stringbuf, data, length);
1600 stringbuf[length] = 0;
1603 if (developer.integer)
1605 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1606 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1607 Com_HexDumpToConsole(data, length);
1610 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1612 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1614 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1616 if (besttime > challenge[i].time)
1617 besttime = challenge[best = i].time;
1619 // if we did not find an exact match, choose the oldest and
1620 // update address and string
1621 if (i == MAX_CHALLENGES)
1624 challenge[i].address = *peeraddress;
1625 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1627 challenge[i].time = realtime;
1628 // send the challenge
1629 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1632 if (length > 8 && !memcmp(string, "connect\\", 8))
1636 if ((s = SearchInfostring(string, "challenge")))
1638 // validate the challenge
1639 for (i = 0;i < MAX_CHALLENGES;i++)
1640 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1642 if (i < MAX_CHALLENGES)
1644 // check engine protocol
1645 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1647 if (developer.integer)
1648 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1649 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1653 // see if this is a duplicate connection request
1654 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1655 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1657 if (clientnum < svs.maxclients && realtime - client->connecttime < net_messagerejointimeout.value)
1659 // client is still trying to connect,
1660 // so we send a duplicate reply
1661 if (developer.integer)
1662 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1663 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1666 else if (clientnum < svs.maxclients)
1668 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1670 // client crashed and is coming back, keep their stuff intact
1671 SV_SendServerinfo(client);
1672 //host_client = client;
1673 //SV_DropClient (true);
1680 // this is a new client, find a slot
1681 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1682 if (!client->active)
1684 if (clientnum < svs.maxclients)
1686 // prepare the client struct
1687 if ((conn = NetConn_Open(mysocket, peeraddress)))
1689 // allocated connection
1690 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1691 if (developer.integer)
1692 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1693 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1694 // now set up the client
1696 SV_ConnectClient(clientnum, conn);
1698 NetConn_Heartbeat(1);
1704 if (developer.integer)
1705 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1706 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1714 if (length >= 7 && !memcmp(string, "getinfo", 7))
1716 const char *challenge = NULL;
1718 // If there was a challenge in the getinfo message
1719 if (length > 8 && string[7] == ' ')
1720 challenge = string + 8;
1722 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1724 if (developer.integer)
1725 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1726 NetConn_WriteString(mysocket, response, peeraddress);
1730 if (length >= 9 && !memcmp(string, "getstatus", 9))
1732 const char *challenge = NULL;
1734 // If there was a challenge in the getinfo message
1735 if (length > 10 && string[9] == ' ')
1736 challenge = string + 10;
1738 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1740 if (developer.integer)
1741 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1742 NetConn_WriteString(mysocket, response, peeraddress);
1746 if (length >= 5 && !memcmp(string, "rcon ", 5))
1749 char *s = string + 5;
1751 for (i = 0;*s > ' ';s++)
1752 if (i < (int)sizeof(password) - 1)
1755 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
1757 // looks like a legitimate rcon command with the correct password
1758 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
1759 rcon_redirect = true;
1760 rcon_redirect_bufferpos = 0;
1761 Cmd_ExecuteString(s, src_command);
1762 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
1763 rcon_redirect = false;
1764 // print resulting text to client
1765 // if client is playing, send a reliable reply instead of
1769 // if the netconnection is loop, then this is the
1770 // local player on a listen mode server, and it would
1771 // result in duplicate printing to the console
1772 // (not that the local player should be using rcon
1773 // when they have the console)
1774 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
1775 SV_ClientPrintf("%s", rcon_redirect_buffer);
1780 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
1781 NetConn_WriteString(mysocket, response, peeraddress);
1787 if (!strncmp(string, "ping", 4))
1789 if (developer.integer)
1790 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1791 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1794 if (!strncmp(string, "ack", 3))
1797 // we may not have liked the packet, but it was a command packet, so
1798 // we're done processing this packet now
1801 // LordHavoc: disabled netquake control packet support in server
1805 // netquake control packets, supported for compatibility only
1806 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1811 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1815 //if (developer.integer)
1816 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
1817 if (length >= (int)strlen("QUAKE") + 1 + 1)
1819 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
1821 if (developer.integer)
1822 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
1823 SZ_Clear(&net_message);
1824 // save space for the header, filled in later
1825 MSG_WriteLong(&net_message, 0);
1826 MSG_WriteByte(&net_message, CCREP_REJECT);
1827 MSG_WriteString(&net_message, "Incompatible version.\n");
1828 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1829 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1830 SZ_Clear(&net_message);
1834 // see if this is a duplicate connection request
1835 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1836 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1838 if (clientnum < svs.maxclients)
1840 // duplicate connection request
1841 if (realtime - client->connecttime < 2.0)
1843 // client is still trying to connect,
1844 // so we send a duplicate reply
1845 if (developer.integer)
1846 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
1847 SZ_Clear(&net_message);
1848 // save space for the header, filled in later
1849 MSG_WriteLong(&net_message, 0);
1850 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1851 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
1852 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1853 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1854 SZ_Clear(&net_message);
1857 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1859 SV_SendServerinfo(client);
1860 // the old client hasn't sent us anything
1861 // in quite a while, so kick off and let
1862 // the retry take care of it...
1863 //host_client = client;
1864 //SV_DropClient (true);
1870 // this is a new client, find a slot
1871 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1872 if (!client->active)
1874 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
1876 // connect to the client
1877 // everything is allocated, just fill in the details
1878 strlcpy (conn->address, addressstring2, sizeof (conn->address));
1879 if (developer.integer)
1880 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
1881 // send back the info about the server connection
1882 SZ_Clear(&net_message);
1883 // save space for the header, filled in later
1884 MSG_WriteLong(&net_message, 0);
1885 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1886 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
1887 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1888 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1889 SZ_Clear(&net_message);
1890 // now set up the client struct
1892 SV_ConnectClient(clientnum, conn);
1894 NetConn_Heartbeat(1);
1898 //if (developer.integer)
1899 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
1900 // no room; try to let player know
1901 SZ_Clear(&net_message);
1902 // save space for the header, filled in later
1903 MSG_WriteLong(&net_message, 0);
1904 MSG_WriteByte(&net_message, CCREP_REJECT);
1905 MSG_WriteString(&net_message, "Server is full.\n");
1906 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1907 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1908 SZ_Clear(&net_message);
1915 case CCREQ_SERVER_INFO:
1916 if (developer.integer)
1917 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
1918 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
1920 if (developer.integer)
1921 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
1922 SZ_Clear(&net_message);
1923 // save space for the header, filled in later
1924 MSG_WriteLong(&net_message, 0);
1925 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
1926 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
1927 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
1928 MSG_WriteString(&net_message, hostname.string);
1929 MSG_WriteString(&net_message, sv.name);
1930 MSG_WriteByte(&net_message, net_activeconnections);
1931 MSG_WriteByte(&net_message, svs.maxclients);
1932 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1933 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1934 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1935 SZ_Clear(&net_message);
1938 case CCREQ_PLAYER_INFO:
1939 if (developer.integer)
1940 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
1943 int playerNumber, activeNumber, clientNumber;
1946 playerNumber = MSG_ReadByte();
1948 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
1949 if (client->active && ++activeNumber == playerNumber)
1951 if (clientNumber != svs.maxclients)
1953 SZ_Clear(&net_message);
1954 // save space for the header, filled in later
1955 MSG_WriteLong(&net_message, 0);
1956 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
1957 MSG_WriteByte(&net_message, playerNumber);
1958 MSG_WriteString(&net_message, client->name);
1959 MSG_WriteLong(&net_message, client->colors);
1960 MSG_WriteLong(&net_message, (int)client->edict->fields.server->frags);
1961 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
1962 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
1963 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1964 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1965 SZ_Clear(&net_message);
1969 case CCREQ_RULE_INFO:
1970 if (developer.integer)
1971 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
1977 // find the search start location
1978 prevCvarName = MSG_ReadString();
1979 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
1981 // send the response
1982 SZ_Clear(&net_message);
1983 // save space for the header, filled in later
1984 MSG_WriteLong(&net_message, 0);
1985 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
1988 MSG_WriteString(&net_message, var->name);
1989 MSG_WriteString(&net_message, var->string);
1991 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1992 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1993 SZ_Clear(&net_message);
2000 // we may not have liked the packet, but it was a valid control
2001 // packet, so we're done processing this packet now
2008 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol)) == 2)
2011 SV_ReadClientMessage();
2020 void NetConn_ServerFrame(void)
2023 lhnetaddress_t peeraddress;
2024 NetConn_UpdateSockets();
2025 for (i = 0;i < sv_numsockets;i++)
2026 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2027 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2028 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2030 // never timeout loopback connections
2031 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2033 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2034 SV_DropClient(false);
2039 void NetConn_QueryMasters(void)
2043 lhnetaddress_t masteraddress;
2044 lhnetaddress_t broadcastaddress;
2047 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2050 // 26000 is the default quake server port, servers on other ports will not
2052 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2053 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2055 for (i = 0;i < cl_numsockets;i++)
2059 // search LAN for Quake servers
2060 SZ_Clear(&net_message);
2061 // save space for the header, filled in later
2062 MSG_WriteLong(&net_message, 0);
2063 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2064 MSG_WriteString(&net_message, "QUAKE");
2065 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2066 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2067 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2068 SZ_Clear(&net_message);
2070 // search LAN for DarkPlaces servers
2071 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2073 // build the getservers message to send to the master servers
2074 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2077 for (masternum = 0;sv_masters[masternum].name;masternum++)
2079 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2082 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2087 if (!masterquerycount)
2089 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2090 M_Update_Return_Reason("No network");
2094 void NetConn_Heartbeat(int priority)
2096 lhnetaddress_t masteraddress;
2098 lhnetsocket_t *mysocket;
2100 // if it's a state change (client connected), limit next heartbeat to no
2101 // more than 30 sec in the future
2102 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2103 nextheartbeattime = realtime + 30.0;
2105 // limit heartbeatperiod to 30 to 270 second range,
2106 // lower limit is to avoid abusing master servers with excess traffic,
2107 // upper limit is to avoid timing out on the master server (which uses
2109 if (sv_heartbeatperiod.value < 30)
2110 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2111 if (sv_heartbeatperiod.value > 270)
2112 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2114 // make advertising optional and don't advertise singleplayer games, and
2115 // only send a heartbeat as often as the admin wants
2116 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2118 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2119 for (masternum = 0;sv_masters[masternum].name;masternum++)
2120 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2121 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2125 static void Net_Heartbeat_f(void)
2128 NetConn_Heartbeat(2);
2130 Con_Print("No server running, can not heartbeat to master server.\n");
2133 void PrintStats(netconn_t *conn)
2135 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2136 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2138 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2141 void Net_Stats_f(void)
2144 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2145 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2146 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2147 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2148 Con_Printf("packetsSent = %i\n", packetsSent);
2149 Con_Printf("packetsReSent = %i\n", packetsReSent);
2150 Con_Printf("packetsReceived = %i\n", packetsReceived);
2151 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2152 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2153 Con_Print("connections =\n");
2154 for (conn = netconn_list;conn;conn = conn->next)
2158 void Net_Slist_f(void)
2160 ServerList_ResetMasks();
2161 serverlist_sortbyfield = SLIF_PING;
2162 serverlist_sortdescending = false;
2163 if (m_state != m_slist) {
2164 Con_Print("Sending requests to master servers\n");
2165 ServerList_QueryList();
2166 serverlist_consoleoutput = true;
2167 Con_Print("Listening for replies...\n");
2169 ServerList_QueryList();
2172 void NetConn_Init(void)
2175 lhnetaddress_t tempaddress;
2176 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2177 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2178 Cmd_AddCommand("net_slist", Net_Slist_f, "query master series and print all server information");
2179 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2180 Cvar_RegisterVariable(&net_slist_queriespersecond);
2181 Cvar_RegisterVariable(&net_slist_queriesperframe);
2182 Cvar_RegisterVariable(&net_slist_timeout);
2183 Cvar_RegisterVariable(&net_slist_maxtries);
2184 Cvar_RegisterVariable(&net_messagetimeout);
2185 Cvar_RegisterVariable(&net_messagerejointimeout);
2186 Cvar_RegisterVariable(&net_connecttimeout);
2187 Cvar_RegisterVariable(&cl_netlocalping);
2188 Cvar_RegisterVariable(&cl_netpacketloss);
2189 Cvar_RegisterVariable(&hostname);
2190 Cvar_RegisterVariable(&developer_networking);
2191 Cvar_RegisterVariable(&cl_netport);
2192 Cvar_RegisterVariable(&sv_netport);
2193 Cvar_RegisterVariable(&net_address);
2194 //Cvar_RegisterVariable(&net_address_ipv6);
2195 Cvar_RegisterVariable(&sv_public);
2196 Cvar_RegisterVariable(&sv_heartbeatperiod);
2197 for (i = 0;sv_masters[i].name;i++)
2198 Cvar_RegisterVariable(&sv_masters[i]);
2199 // 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.
2200 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2202 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2204 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
2205 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2208 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2210 // 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
2211 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2213 i = atoi(com_argv[i + 1]);
2214 if (i >= 0 && i < 65536)
2216 Con_Printf("-port option used, setting port cvar to %i\n", i);
2217 Cvar_SetValueQuick(&sv_netport, i);
2220 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2224 net_message.data = net_message_buf;
2225 net_message.maxsize = sizeof(net_message_buf);
2226 net_message.cursize = 0;
2230 void NetConn_Shutdown(void)
2232 NetConn_CloseClientPorts();
2233 NetConn_CloseServerPorts();