2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2002 Mathieu Olivier
4 Copyright (C) 2003 Forest Hale
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #define QWMASTER_PORT 27000
27 #define DPMASTER_PORT 27950
29 // note this defaults on for dedicated servers, off for listen servers
30 cvar_t sv_public = {0, "sv_public", "0", "advertises this server on the master server (so that players can find it in the server browser)"};
31 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
33 static cvar_t sv_masters [] =
35 {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
36 {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
37 {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
38 {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
39 {0, "sv_masterextra1", "ghdigital.com", "default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
40 {0, "sv_masterextra2", "dpmaster.deathmask.net", "default master server 2 (admin: Willis)"}, // admin: Willis
41 {0, "sv_masterextra3", "12.166.196.192", "default master server 3 (admin: Venim)"}, // admin: Venim
42 {0, "sv_masterextra4", "excalibur.nvg.ntnu.no", "default master server 4 (admin: tChr)"}, // admin: tChr
46 static cvar_t sv_qwmasters [] =
48 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
49 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
50 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
51 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
52 {0, "sv_qwmasterextra1", "satan.idsoftware.com", "default qwmaster server 1 (admin: idSoftware)"},
53 {0, "sv_qwmasterextra2", "192.246.40.37:27000", "id Limbo (admin: id Software)"},
54 {0, "sv_qwmasterextra3", "192.246.40.37:27002", "id CTF (admin: id Software)"},
55 {0, "sv_qwmasterextra4", "192.246.40.37:27003", "id TeamFortress (admin: id Software)"},
56 {0, "sv_qwmasterextra5", "192.246.40.37:27004", "id Miscilaneous (admin: id Software)"},
57 {0, "sv_qwmasterextra6", "192.246.40.37:27006", "id Deathmatch Only (admin: id Software)"},
58 {0, "sv_qwmasterextra7", "150.254.66.120:27000", "Poland's master server. (admin: unknown)"},
59 {0, "sv_qwmasterextra8", "62.112.145.129:27000", "Ocrana master server. (admin: unknown)"},
60 {0, "sv_qwmasterextra9", "master.edome.net", "edome master server. (admin: unknown)"},
61 {0, "sv_qwmasterextra10", "qwmaster.barrysworld.com", "barrysworld master server. (admin: unknown)"},
62 {0, "sv_qwmasterextra11", "qwmaster.ocrana.de:27000", "Ocrana2 master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra12", "213.221.174.165:27000", "unknown1 master server. (admin: unknown)"},
64 {0, "sv_qwmasterextra13", "195.74.0.8", "unknown2 master server. (admin: unknown)"},
65 {0, "sv_qwmasterextra14", "192.246.40.37", "unknown3 master server. (admin: unknown)"},
66 {0, "sv_qwmasterextra15", "192.246.40.37:27006", "unknown4 master server. (admin: unknown)"},
67 {0, "sv_qwmasterextra16", "204.182.161.2", "unknown5 master server. (admin: unknown)"},
71 static double nextheartbeattime = 0;
73 sizebuf_t net_message;
74 static unsigned char net_message_buf[NET_MAXMESSAGE];
76 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
77 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)"};
78 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)"};
79 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
80 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
82 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)"};
83 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)"};
84 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
85 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)"};
86 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
87 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)"};
89 /* statistic counters */
90 static int packetsSent = 0;
91 static int packetsReSent = 0;
92 static int packetsReceived = 0;
93 static int receivedDuplicateCount = 0;
94 static int droppedDatagrams = 0;
96 static int unreliableMessagesSent = 0;
97 static int unreliableMessagesReceived = 0;
98 static int reliableMessagesSent = 0;
99 static int reliableMessagesReceived = 0;
101 double masterquerytime = -1000;
102 int masterquerycount = 0;
103 int masterreplycount = 0;
104 int serverquerycount = 0;
105 int serverreplycount = 0;
107 // this is only false if there are still servers left to query
108 int serverlist_querysleep = true;
109 // this is pushed a second or two ahead of realtime whenever a master server
110 // reply is received, to avoid issuing queries while master replies are still
111 // flooding in (which would make a mess of the ping times)
112 double serverlist_querywaittime = 0;
114 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
115 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
118 lhnetsocket_t *cl_sockets[16];
120 lhnetsocket_t *sv_sockets[16];
122 netconn_t *netconn_list = NULL;
123 mempool_t *netconn_mempool = NULL;
125 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
126 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
127 cvar_t net_address = {0, "net_address", "0.0.0.0", "network address to open ports on"};
128 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]", "network address to open ipv6 ports on"};
130 // ServerList interface
131 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
132 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
134 serverlist_infofield_t serverlist_sortbyfield;
135 qboolean serverlist_sortdescending;
137 int serverlist_viewcount = 0;
138 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
140 int serverlist_cachecount;
141 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
143 qboolean serverlist_consoleoutput;
145 // helper function to insert a value into the viewset
146 // spare entries will be removed
147 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
150 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
151 i = serverlist_viewcount++;
153 i = SERVERLIST_VIEWLISTSIZE - 1;
156 for( ; i > index ; i-- )
157 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
159 serverlist_viewlist[index] = entry;
162 // we suppose serverlist_viewcount to be valid, ie > 0
163 static void _ServerList_ViewList_Helper_Remove( int index )
165 serverlist_viewcount--;
166 for( ; index < serverlist_viewcount ; index++ )
167 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
170 // returns true if A should be inserted before B
171 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
173 int result = 0; // > 0 if for numbers A > B and for text if A < B
175 switch( serverlist_sortbyfield ) {
177 result = A->info.ping - B->info.ping;
179 case SLIF_MAXPLAYERS:
180 result = A->info.maxplayers - B->info.maxplayers;
182 case SLIF_NUMPLAYERS:
183 result = A->info.numplayers - B->info.numplayers;
186 result = A->info.protocol - B->info.protocol;
189 result = strcmp( B->info.cname, A->info.cname );
192 result = strcmp( B->info.game, A->info.game );
195 result = strcmp( B->info.map, A->info.map );
198 result = strcmp( B->info.mod, A->info.mod );
201 result = strcmp( B->info.name, A->info.name );
204 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
208 if( serverlist_sortdescending )
213 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
215 // This should actually be done with some intermediate and end-of-function return
227 case SLMO_GREATEREQUAL:
229 case SLMO_NOTCONTAIN:
232 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
237 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
240 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
241 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
242 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
244 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
245 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
248 // Same here, also using an intermediate & final return would be more appropriate
252 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
253 case SLMO_NOTCONTAIN:
254 return !*bufferB || !strstr( bufferA, bufferB );
256 return strcmp( bufferA, bufferB ) < 0;
258 return strcmp( bufferA, bufferB ) <= 0;
260 return strcmp( bufferA, bufferB ) == 0;
262 return strcmp( bufferA, bufferB ) > 0;
264 return strcmp( bufferA, bufferB ) != 0;
265 case SLMO_GREATEREQUAL:
266 return strcmp( bufferA, bufferB ) >= 0;
268 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
273 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
275 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
277 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
279 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
281 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
283 if( *mask->info.cname
284 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
287 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
290 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
293 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
296 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
301 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
305 // FIXME: change this to be more readable (...)
306 // now check whether it passes through the masks
307 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
308 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
311 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
312 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
314 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
317 if( !serverlist_viewcount ) {
318 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
321 // ok, insert it, we just need to find out where exactly:
324 // check whether to insert it as new first item
325 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
326 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
328 } // check whether to insert it as new last item
329 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
330 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
334 end = serverlist_viewcount - 1;
335 while( end > start + 1 )
337 mid = (start + end) / 2;
338 // test the item that lies in the middle between start and end
339 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
340 // the item has to be in the upper half
343 // the item has to be in the lower half
346 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
349 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
352 for( i = 0; i < serverlist_viewcount; i++ )
354 if (serverlist_viewlist[i] == entry)
356 _ServerList_ViewList_Helper_Remove(i);
362 void ServerList_RebuildViewList(void)
366 serverlist_viewcount = 0;
367 for( i = 0 ; i < serverlist_cachecount ; i++ )
368 if( serverlist_cache[i].query == SQS_QUERIED )
369 ServerList_ViewList_Insert( &serverlist_cache[i] );
372 void ServerList_ResetMasks(void)
374 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
375 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
379 static void _ServerList_Test(void)
382 for( i = 0 ; i < 1024 ; i++ ) {
383 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
384 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
385 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
386 serverlist_cache[serverlist_cachecount].finished = true;
387 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
388 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
389 serverlist_cachecount++;
394 void ServerList_QueryList(void)
396 //masterquerytime = realtime;
397 masterquerytime = Sys_DoubleTime();
398 masterquerycount = 0;
399 masterreplycount = 0;
400 serverquerycount = 0;
401 serverreplycount = 0;
402 serverlist_cachecount = 0;
403 serverlist_viewcount = 0;
404 serverlist_consoleoutput = false;
406 //_ServerList_Test();
408 NetConn_QueryMasters();
413 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
415 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
419 if (cl_netpacketloss.integer)
420 for (i = 0;i < cl_numsockets;i++)
421 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
423 if (developer_networking.integer)
425 char addressstring[128], addressstring2[128];
426 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
429 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
430 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
431 Com_HexDumpToConsole((unsigned char *)data, length);
434 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
439 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
443 if (cl_netpacketloss.integer)
444 for (i = 0;i < cl_numsockets;i++)
445 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
447 ret = LHNET_Write(mysocket, data, length, peeraddress);
448 if (developer_networking.integer)
450 char addressstring[128], addressstring2[128];
451 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
452 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
453 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
454 Com_HexDumpToConsole((unsigned char *)data, length);
459 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
461 // note this does not include the trailing NULL because we add that in the parser
462 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
465 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol)
467 if (protocol == PROTOCOL_QUAKEWORLD)
470 qboolean sendreliable;
472 // note that it is ok to send empty messages to the qw server,
473 // otherwise it won't respond to us at all
475 sendreliable = false;
476 // if the remote side dropped the last reliable message, resend it
477 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
479 // if the reliable transmit buffer is empty, copy the current message out
480 if (!conn->sendMessageLength && conn->message.cursize)
482 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
483 conn->sendMessageLength = conn->message.cursize;
484 SZ_Clear(&conn->message); // clear the message buffer
485 conn->qw.reliable_sequence ^= 1;
488 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
489 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
490 // last received unreliable packet number, and last received reliable packet number (0 or 1)
491 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
493 conn->qw.outgoing_sequence++;
494 // client sends qport in every packet
495 if (conn == cls.netcon)
497 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
500 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
502 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
505 // add the reliable message if there is one
508 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
509 packetLen += conn->sendMessageLength;
510 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
512 // add the unreliable message if possible
513 if (packetLen + data->cursize <= 1400)
515 memcpy(sendbuffer + packetLen, data->data, data->cursize);
516 packetLen += data->cursize;
519 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
522 unreliableMessagesSent++;
524 // delay later packets to obey rate limit
525 conn->qw.cleartime = max(conn->qw.cleartime, realtime) + packetLen * conn->qw.rate;
531 unsigned int packetLen;
532 unsigned int dataLen;
534 unsigned int *header;
536 // if a reliable message fragment has been lost, send it again
537 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
539 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
541 dataLen = conn->sendMessageLength;
546 dataLen = MAX_PACKETFRAGMENT;
550 packetLen = NET_HEADERSIZE + dataLen;
552 header = (unsigned int *)sendbuffer;
553 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
554 header[1] = BigLong(conn->nq.sendSequence - 1);
555 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
557 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
559 conn->lastSendTime = realtime;
564 // if we have a new reliable message to send, do so
565 if (!conn->sendMessageLength && conn->message.cursize)
567 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
569 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, sizeof(conn->sendMessage));
570 conn->message.overflowed = true;
574 if (developer_networking.integer && conn == cls.netcon)
576 Con_Print("client sending reliable message to server:\n");
577 SZ_HexDumpToConsole(&conn->message);
580 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
581 conn->sendMessageLength = conn->message.cursize;
582 SZ_Clear(&conn->message);
584 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
586 dataLen = conn->sendMessageLength;
591 dataLen = MAX_PACKETFRAGMENT;
595 packetLen = NET_HEADERSIZE + dataLen;
597 header = (unsigned int *)sendbuffer;
598 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
599 header[1] = BigLong(conn->nq.sendSequence);
600 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
602 conn->nq.sendSequence++;
604 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
606 conn->lastSendTime = realtime;
608 reliableMessagesSent++;
611 // if we have an unreliable message to send, do so
614 packetLen = NET_HEADERSIZE + data->cursize;
616 if (packetLen > (int)sizeof(sendbuffer))
618 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
622 header = (unsigned int *)sendbuffer;
623 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
624 header[1] = BigLong(conn->nq.unreliableSendSequence);
625 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
627 conn->nq.unreliableSendSequence++;
629 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
632 unreliableMessagesSent++;
638 void NetConn_CloseClientPorts(void)
640 for (;cl_numsockets > 0;cl_numsockets--)
641 if (cl_sockets[cl_numsockets - 1])
642 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
645 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
647 lhnetaddress_t address;
649 char addressstring2[1024];
650 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
652 if ((s = LHNET_OpenSocket_Connectionless(&address)))
654 cl_sockets[cl_numsockets++] = s;
655 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
656 Con_Printf("Client opened a socket on address %s\n", addressstring2);
660 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
661 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
665 Con_Printf("Client unable to parse address %s\n", addressstring);
668 void NetConn_OpenClientPorts(void)
671 NetConn_CloseClientPorts();
672 port = bound(0, cl_netport.integer, 65535);
673 if (cl_netport.integer != port)
674 Cvar_SetValueQuick(&cl_netport, port);
675 Con_Printf("Client using port %i\n", port);
676 NetConn_OpenClientPort("local:2", 0);
677 NetConn_OpenClientPort(net_address.string, port);
678 //NetConn_OpenClientPort(net_address_ipv6.string, port);
681 void NetConn_CloseServerPorts(void)
683 for (;sv_numsockets > 0;sv_numsockets--)
684 if (sv_sockets[sv_numsockets - 1])
685 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
688 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
690 lhnetaddress_t address;
693 char addressstring2[1024];
695 for (port = defaultport; port <= defaultport + 100; port++)
697 if (LHNETADDRESS_FromString(&address, addressstring, port))
699 if ((s = LHNET_OpenSocket_Connectionless(&address)))
701 sv_sockets[sv_numsockets++] = s;
702 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
703 Con_Printf("Server listening on address %s\n", addressstring2);
708 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
709 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
714 Con_Printf("Server unable to parse address %s\n", addressstring);
715 // if it cant parse one address, it wont be able to parse another for sure
721 void NetConn_OpenServerPorts(int opennetports)
724 NetConn_CloseServerPorts();
725 NetConn_UpdateSockets();
726 port = bound(0, sv_netport.integer, 65535);
729 Con_Printf("Server using port %i\n", port);
730 if (sv_netport.integer != port)
731 Cvar_SetValueQuick(&sv_netport, port);
732 if (cls.state != ca_dedicated)
733 NetConn_OpenServerPort("local:1", 0);
736 NetConn_OpenServerPort(net_address.string, port);
737 //NetConn_OpenServerPort(net_address_ipv6.string, port);
739 if (sv_numsockets == 0)
740 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
743 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
745 int i, a = LHNETADDRESS_GetAddressType(address);
746 for (i = 0;i < cl_numsockets;i++)
747 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
748 return cl_sockets[i];
752 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
754 int i, a = LHNETADDRESS_GetAddressType(address);
755 for (i = 0;i < sv_numsockets;i++)
756 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
757 return sv_sockets[i];
761 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
764 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
765 conn->mysocket = mysocket;
766 conn->peeraddress = *peeraddress;
767 conn->lastMessageTime = realtime;
768 conn->message.data = conn->messagedata;
769 conn->message.maxsize = sizeof(conn->messagedata);
770 conn->message.cursize = 0;
771 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
772 // reduce effectiveness of connection request floods
773 conn->timeout = realtime + net_connecttimeout.value;
774 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
775 conn->next = netconn_list;
780 void NetConn_Close(netconn_t *conn)
783 // remove connection from list
784 if (conn == netconn_list)
785 netconn_list = conn->next;
788 for (c = netconn_list;c;c = c->next)
792 c->next = conn->next;
796 // not found in list, we'll avoid crashing here...
804 static int clientport = -1;
805 static int clientport2 = -1;
806 static int hostport = -1;
807 void NetConn_UpdateSockets(void)
809 if (cls.state != ca_dedicated)
811 if (clientport2 != cl_netport.integer)
813 clientport2 = cl_netport.integer;
814 if (cls.state == ca_connected)
815 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
817 if (cls.state == ca_disconnected && clientport != clientport2)
819 clientport = clientport2;
820 NetConn_CloseClientPorts();
822 if (cl_numsockets == 0)
823 NetConn_OpenClientPorts();
826 if (hostport != sv_netport.integer)
828 hostport = sv_netport.integer;
830 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
834 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol)
839 if (protocol == PROTOCOL_QUAKEWORLD)
841 int sequence, sequence_ack;
842 int reliable_ack, reliable_message;
846 sequence = LittleLong(*((int *)(data + 0)));
847 sequence_ack = LittleLong(*((int *)(data + 4)));
851 if (conn != cls.netcon)
856 // 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?)
857 qport = LittleShort(*((int *)(data + 8)));
863 reliable_message = (sequence >> 31) & 1;
864 reliable_ack = (sequence_ack >> 31) & 1;
865 sequence &= ~(1<<31);
866 sequence_ack &= ~(1<<31);
867 if (sequence <= conn->qw.incoming_sequence)
869 Con_DPrint("Got a stale datagram\n");
872 count = sequence - (conn->qw.incoming_sequence + 1);
875 droppedDatagrams += count;
876 Con_DPrintf("Dropped %u datagram(s)\n", count);
878 if (reliable_ack == conn->qw.reliable_sequence)
880 // received, now we will be able to send another reliable message
881 conn->sendMessageLength = 0;
882 reliableMessagesReceived++;
884 conn->qw.incoming_sequence = sequence;
885 conn->qw.incoming_acknowledged = sequence_ack;
886 conn->qw.incoming_reliable_acknowledged = reliable_ack;
887 if (reliable_message)
888 conn->qw.incoming_reliable_sequence ^= 1;
889 conn->lastMessageTime = realtime;
890 conn->timeout = realtime + net_messagetimeout.value;
891 unreliableMessagesReceived++;
892 SZ_Clear(&net_message);
893 SZ_Write(&net_message, data, length);
901 unsigned int sequence;
904 qlength = (unsigned int)BigLong(((int *)data)[0]);
905 flags = qlength & ~NETFLAG_LENGTH_MASK;
906 qlength &= NETFLAG_LENGTH_MASK;
907 // control packets were already handled
908 if (!(flags & NETFLAG_CTL) && qlength == length)
910 sequence = BigLong(((int *)data)[1]);
914 if (flags & NETFLAG_UNRELIABLE)
916 if (sequence >= conn->nq.unreliableReceiveSequence)
918 if (sequence > conn->nq.unreliableReceiveSequence)
920 count = sequence - conn->nq.unreliableReceiveSequence;
921 droppedDatagrams += count;
922 Con_DPrintf("Dropped %u datagram(s)\n", count);
924 conn->nq.unreliableReceiveSequence = sequence + 1;
925 conn->lastMessageTime = realtime;
926 conn->timeout = realtime + net_messagetimeout.value;
927 unreliableMessagesReceived++;
930 SZ_Clear(&net_message);
931 SZ_Write(&net_message, data, length);
937 Con_DPrint("Got a stale datagram\n");
940 else if (flags & NETFLAG_ACK)
942 if (sequence == (conn->nq.sendSequence - 1))
944 if (sequence == conn->nq.ackSequence)
946 conn->nq.ackSequence++;
947 if (conn->nq.ackSequence != conn->nq.sendSequence)
948 Con_DPrint("ack sequencing error\n");
949 conn->lastMessageTime = realtime;
950 conn->timeout = realtime + net_messagetimeout.value;
951 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
953 unsigned int packetLen;
954 unsigned int dataLen;
956 unsigned int *header;
958 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
959 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
961 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
963 dataLen = conn->sendMessageLength;
968 dataLen = MAX_PACKETFRAGMENT;
972 packetLen = NET_HEADERSIZE + dataLen;
974 header = (unsigned int *)sendbuffer;
975 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
976 header[1] = BigLong(conn->nq.sendSequence);
977 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
979 conn->nq.sendSequence++;
981 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
983 conn->lastSendTime = realtime;
988 conn->sendMessageLength = 0;
991 Con_DPrint("Duplicate ACK received\n");
994 Con_DPrint("Stale ACK received\n");
997 else if (flags & NETFLAG_DATA)
999 unsigned int temppacket[2];
1000 temppacket[0] = BigLong(8 | NETFLAG_ACK);
1001 temppacket[1] = BigLong(sequence);
1002 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
1003 if (sequence == conn->nq.receiveSequence)
1005 conn->lastMessageTime = realtime;
1006 conn->timeout = realtime + net_messagetimeout.value;
1007 conn->nq.receiveSequence++;
1008 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1009 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1010 conn->receiveMessageLength += length;
1012 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1013 "Dropping the message!\n", sequence );
1014 conn->receiveMessageLength = 0;
1017 if (flags & NETFLAG_EOM)
1019 reliableMessagesReceived++;
1020 length = conn->receiveMessageLength;
1021 conn->receiveMessageLength = 0;
1024 SZ_Clear(&net_message);
1025 SZ_Write(&net_message, conn->receiveMessage, length);
1032 receivedDuplicateCount++;
1040 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1042 cls.connect_trying = false;
1043 M_Update_Return_Reason("");
1044 // the connection request succeeded, stop current connection and set up a new connection
1046 // if we're connecting to a remote server, shut down any local server
1047 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1048 Host_ShutdownServer ();
1049 // allocate a net connection to keep track of things
1050 cls.netcon = NetConn_Open(mysocket, peeraddress);
1051 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1052 key_dest = key_game;
1054 cls.demonum = -1; // not in the demo loop now
1055 cls.state = ca_connected;
1056 cls.signon = 0; // need all the signon messages before playing
1057 cls.protocol = initialprotocol;
1058 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1059 Cmd_ForwardStringToServer("new");
1062 int NetConn_IsLocalGame(void)
1064 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1069 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1071 qboolean fromserver;
1072 int ret, c, control;
1074 char *string, addressstring2[128], cname[128], ipstring[32];
1075 char stringbuf[16384];
1077 // quakeworld ingame packet
1078 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1080 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1082 // received a command string - strip off the packaging and put it
1083 // into our string buffer with NULL termination
1086 length = min(length, (int)sizeof(stringbuf) - 1);
1087 memcpy(stringbuf, data, length);
1088 stringbuf[length] = 0;
1091 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1093 if (developer_networking.integer)
1095 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1096 Com_HexDumpToConsole(data, length);
1099 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1101 // darkplaces or quake3
1102 char protocolnames[1400];
1103 Protocol_Names(protocolnames, sizeof(protocolnames));
1104 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1105 M_Update_Return_Reason("Got challenge response");
1106 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1109 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')))
1112 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1113 Con_Printf("\"%s\" received, sending QuakeWorld connect request back to %s\n", string, addressstring2);
1114 M_Update_Return_Reason("Got QuakeWorld challenge response");
1115 cls.qw_qport = qport.integer;
1116 NetConn_WriteString(mysocket, va("\377\377\377\377connect 28 %i %i \"%s\"\n", cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1118 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1120 // darkplaces or quake3
1121 M_Update_Return_Reason("Accepted");
1122 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1125 if (length > 1 && string[0] == 'j' && cls.connect_trying)
1128 M_Update_Return_Reason("QuakeWorld Accepted");
1129 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1132 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1134 char rejectreason[32];
1135 cls.connect_trying = false;
1137 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1138 memcpy(rejectreason, string, length);
1139 rejectreason[length] = 0;
1140 M_Update_Return_Reason(rejectreason);
1143 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1145 serverlist_info_t *info;
1150 // serverlist only uses text addresses
1151 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1152 // search the cache for this server and update it
1153 for( n = 0; n < serverlist_cachecount; n++ )
1154 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1156 if( n == serverlist_cachecount ) {
1157 // LAN search doesnt require an answer from the master server so we wont
1158 // know the ping nor will it be initialized already...
1161 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1164 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1165 // store the data the engine cares about (address and ping)
1166 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1167 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1168 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1169 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1170 // if not in the slist menu we should print the server to console
1171 if (serverlist_consoleoutput) {
1172 Con_Printf("querying %s\n", ipstring);
1175 ++serverlist_cachecount;
1178 info = &serverlist_cache[n].info;
1179 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1180 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1181 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1182 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1183 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1184 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1185 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1187 if (info->ping == 100000)
1190 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1191 pingtime = bound(0, pingtime, 9999);
1193 info->ping = pingtime;
1195 // legacy/old stuff move it to the menu ASAP
1197 // build description strings for the things users care about
1198 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", pingtime >= 300 ? '1' : (pingtime >= 200 ? '3' : '7'), (int)pingtime, ((info->numplayers > 0 && info->numplayers < info->maxplayers) ? (info->numplayers >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1199 dpsnprintf(serverlist_cache[n].line2, sizeof(serverlist_cache[n].line2), "^5%-21.21s %-19.19s %-17.17s %-20.20s", info->cname, info->game, info->mod, info->map);
1200 if( serverlist_cache[n].query == SQS_QUERIED ) {
1201 ServerList_ViewList_Remove( &serverlist_cache[n] );
1203 // if not in the slist menu we should print the server to console (if wanted)
1204 else if( serverlist_consoleoutput )
1205 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1206 // and finally, update the view set
1207 ServerList_ViewList_Insert( &serverlist_cache[n] );
1208 serverlist_cache[n].query = SQS_QUERIED;
1212 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1214 // Extract the IP addresses
1218 if (serverlist_consoleoutput)
1219 Con_Print("received DarkPlaces server list...\n");
1220 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1224 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], data[5] * 256 + data[6]);
1225 if (serverlist_consoleoutput && developer_networking.integer)
1226 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1227 // ignore the rest of the message if the serverlist is full
1228 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1230 // also ignore it if we have already queried it (other master server response)
1231 for( n = 0 ; n < serverlist_cachecount ; n++ )
1232 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1234 if( n >= serverlist_cachecount )
1238 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1239 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_DARKPLACES7;
1240 // store the data the engine cares about (address and ping)
1241 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1242 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1243 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1245 ++serverlist_cachecount;
1248 // move on to next address in packet
1252 // begin or resume serverlist queries
1253 serverlist_querysleep = false;
1254 serverlist_querywaittime = realtime + 3;
1257 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1259 // Extract the IP addresses
1263 if (serverlist_consoleoutput)
1264 Con_Print("received QuakeWorld server list...\n");
1265 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1269 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1270 if (serverlist_consoleoutput && developer_networking.integer)
1271 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1272 // ignore the rest of the message if the serverlist is full
1273 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1275 // also ignore it if we have already queried it (other master server response)
1276 for( n = 0 ; n < serverlist_cachecount ; n++ )
1277 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1279 if( n >= serverlist_cachecount )
1283 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1284 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_QUAKEWORLD;
1285 // store the data the engine cares about (address and ping)
1286 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1287 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1288 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1290 ++serverlist_cachecount;
1293 // move on to next address in packet
1297 // begin or resume serverlist queries
1298 serverlist_querysleep = false;
1299 serverlist_querywaittime = realtime + 3;
1303 if (!strncmp(string, "ping", 4))
1305 if (developer.integer)
1306 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1307 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1310 if (!strncmp(string, "ack", 3))
1313 // QuakeWorld compatibility
1314 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1317 M_Update_Return_Reason("Accepted");
1318 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1321 if (length > 1 && string[0] == 'c' && string[1] >= '0' && string[1] <= '9' && cls.connect_trying)
1323 // challenge message
1324 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1325 Con_Printf("challenge %s received, sending connect request back to %s\n", string + 1, addressstring2);
1326 M_Update_Return_Reason("Got challenge response");
1327 cls.qw_qport = qport.integer;
1328 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1329 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "name", cl_name.string);
1330 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "topcolor", va("%i", (cl_color.integer >> 4) & 15));
1331 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "bottomcolor", va("%i", (cl_color.integer) & 15));
1332 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "rate", va("%i", cl_rate.integer));
1333 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "msg", "1");
1334 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ver", engineversion);
1335 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1338 if (length > 2 && !memcmp(string, "n\\", 2))
1340 serverlist_info_t *info;
1345 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1346 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1349 // serverlist only uses text addresses
1350 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
1351 // search the cache for this server and update it
1352 for( n = 0; n < serverlist_cachecount; n++ )
1353 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1355 if( n == serverlist_cachecount ) {
1356 // LAN search doesnt require an answer from the master server so we wont
1357 // know the ping nor will it be initialized already...
1360 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1363 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1364 // store the data the engine cares about (address and ping)
1365 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1366 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1367 //serverlist_cache[serverlist_cachecount].querytime = realtime;
1368 serverlist_cache[serverlist_cachecount].querytime = Sys_DoubleTime();
1369 // if not in the slist menu we should print the server to console
1370 if (serverlist_consoleoutput) {
1371 Con_Printf("querying %s\n", ipstring);
1374 ++serverlist_cachecount;
1377 info = &serverlist_cache[n].info;
1378 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1379 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1380 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1381 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1382 strlcpy(info->game, "QuakeWorld", sizeof(info->game));;
1384 info->numplayers = 0; // updated below
1386 // count active players on server
1387 // (we could gather more info, but we're just after the number)
1388 s = strchr(string, '\n');
1392 while (s < string + length)
1394 for (;s < string + length && *s != '\n';s++)
1396 if (s >= string + length)
1403 if (info->ping == 100000)
1406 pingtime = (int)((Sys_DoubleTime() - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1407 pingtime = bound(0, pingtime, 9999);
1409 info->ping = pingtime;
1411 // legacy/old stuff move it to the menu ASAP
1413 // build description strings for the things users care about
1414 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", pingtime >= 300 ? '1' : (pingtime >= 200 ? '3' : '7'), (int)pingtime, ((info->numplayers > 0 && info->numplayers < info->maxplayers) ? (info->numplayers >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1415 dpsnprintf(serverlist_cache[n].line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s %-17.17s %-20.20s", info->cname, info->game, info->mod, info->map);
1416 if( serverlist_cache[n].query == SQS_QUERIED ) {
1417 ServerList_ViewList_Remove( &serverlist_cache[n] );
1419 // if not in the slist menu we should print the server to console (if wanted)
1420 else if( serverlist_consoleoutput )
1421 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1422 // and finally, update the view set
1423 ServerList_ViewList_Insert( &serverlist_cache[n] );
1424 serverlist_cache[n].query = SQS_QUERIED;
1428 if (string[0] == 'n')
1431 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
1433 // we may not have liked the packet, but it was a command packet, so
1434 // we're done processing this packet now
1437 // quakeworld ingame packet
1438 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1441 CL_ParseServerMessage();
1444 // netquake control packets, supported for compatibility only
1445 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1450 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1454 if (developer.integer)
1455 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1456 if (cls.connect_trying)
1458 lhnetaddress_t clientportaddress;
1459 clientportaddress = *peeraddress;
1462 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
1465 LHNETADDRESS_SetPort(&clientportaddress, port);
1467 M_Update_Return_Reason("Accepted");
1468 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1472 if (developer.integer)
1473 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1474 cls.connect_trying = false;
1475 M_Update_Return_Reason((char *)data);
1478 case CCREP_SERVER_INFO:
1479 if (developer.integer)
1480 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1481 if (cls.state != ca_dedicated)
1483 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
1484 // string we just ignore it and keep the real address
1486 // serverlist only uses text addresses
1487 cname = UDP_AddrToString(readaddr);
1488 // search the cache for this server
1489 for (n = 0; n < hostCacheCount; n++)
1490 if (!strcmp(cname, serverlist[n].cname))
1493 if (n == hostCacheCount && hostCacheCount < SERVERLISTSIZE)
1496 memset(&serverlist[n], 0, sizeof(serverlist[n]));
1497 strlcpy (serverlist[n].name, MSG_ReadString(), sizeof (serverlist[n].name));
1498 strlcpy (serverlist[n].map, MSG_ReadString(), sizeof (serverlist[n].map));
1499 serverlist[n].users = MSG_ReadByte();
1500 serverlist[n].maxusers = MSG_ReadByte();
1502 if (c != NET_PROTOCOL_VERSION)
1504 strlcpy (serverlist[n].cname, serverlist[n].name, sizeof (serverlist[n].cname));
1505 strcpy(serverlist[n].name, "*");
1506 strlcat (serverlist[n].name, serverlist[n].cname, sizeof(serverlist[n].name));
1508 strlcpy (serverlist[n].cname, cname, sizeof (serverlist[n].cname));
1512 case CCREP_PLAYER_INFO:
1513 // we got a CCREP_PLAYER_INFO??
1514 //if (developer.integer)
1515 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1517 case CCREP_RULE_INFO:
1518 // we got a CCREP_RULE_INFO??
1519 //if (developer.integer)
1520 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1526 // we may not have liked the packet, but it was a valid control
1527 // packet, so we're done processing this packet now
1531 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol)) == 2)
1532 CL_ParseServerMessage();
1536 void NetConn_QueryQueueFrame(void)
1542 static double querycounter = 0;
1544 if (serverlist_querysleep)
1547 // apply a cool down time after master server replies,
1548 // to avoid messing up the ping times on the servers
1549 if (serverlist_querywaittime > realtime)
1552 // each time querycounter reaches 1.0 issue a query
1553 querycounter += host_realframetime * net_slist_queriespersecond.value;
1554 maxqueries = (int)querycounter;
1555 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1556 querycounter -= maxqueries;
1558 if( maxqueries == 0 ) {
1562 // scan serverlist and issue queries as needed
1563 serverlist_querysleep = true;
1565 timeouttime = realtime - net_slist_timeout.value;
1566 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1568 serverlist_entry_t *entry = &serverlist_cache[ index ];
1569 if( entry->query != SQS_QUERYING )
1574 serverlist_querysleep = false;
1575 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1580 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1582 lhnetaddress_t address;
1585 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1586 if (entry->protocol == PROTOCOL_QUAKEWORLD)
1588 for (socket = 0; socket < cl_numsockets ; socket++)
1589 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
1593 for (socket = 0; socket < cl_numsockets ; socket++)
1594 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1597 //entry->querytime = realtime;
1598 entry->querytime = Sys_DoubleTime();
1599 entry->querycounter++;
1601 // if not in the slist menu we should print the server to console
1602 if (serverlist_consoleoutput)
1603 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1609 entry->query = SQS_TIMEDOUT;
1614 void NetConn_ClientFrame(void)
1617 lhnetaddress_t peeraddress;
1618 NetConn_UpdateSockets();
1619 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1621 if (cls.connect_remainingtries == 0)
1622 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1623 cls.connect_nextsendtime = realtime + 1;
1624 cls.connect_remainingtries--;
1625 if (cls.connect_remainingtries <= -10)
1627 cls.connect_trying = false;
1628 M_Update_Return_Reason("Connect: Failed");
1631 // try challenge first (newer DP server or QW)
1632 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1633 // then try netquake as a fallback (old server, or netquake)
1634 SZ_Clear(&net_message);
1635 // save space for the header, filled in later
1636 MSG_WriteLong(&net_message, 0);
1637 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1638 MSG_WriteString(&net_message, "QUAKE");
1639 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1640 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1641 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1642 SZ_Clear(&net_message);
1644 for (i = 0;i < cl_numsockets;i++)
1645 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1646 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1647 NetConn_QueryQueueFrame();
1648 if (cls.netcon && realtime > cls.netcon->timeout)
1650 Con_Print("Connection timed out\n");
1652 Host_ShutdownServer ();
1656 #define MAX_CHALLENGES 128
1659 lhnetaddress_t address;
1663 challenge[MAX_CHALLENGES];
1665 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1669 for (i = 0;i < bufferlength - 1;i++)
1673 c = rand () % (127 - 33) + 33;
1674 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1680 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1682 unsigned int nb_clients = 0, i;
1685 // How many clients are there?
1686 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1687 if (svs.clients[i].active)
1690 // TODO: we should add more information for the full status string
1691 length = dpsnprintf(out_msg, out_size,
1692 "\377\377\377\377%s\x0A"
1693 "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
1694 "\\clients\\%d\\mapname\\%s\\hostname\\%s""\\protocol\\%d"
1697 fullstatus ? "statusResponse" : "infoResponse",
1698 gamename, com_modname, svs.maxclients,
1699 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1700 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1701 fullstatus ? "\n" : "");
1703 // Make sure it fits in the buffer
1712 ptr = out_msg + length;
1713 left = (int)out_size - length;
1715 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1717 client_t *cl = &svs.clients[i];
1720 int nameind, cleanind;
1722 char cleanname [sizeof(cl->name)];
1724 // Remove all characters '"' and '\' in the player name
1729 curchar = cl->name[nameind++];
1730 if (curchar != '"' && curchar != '\\')
1732 cleanname[cleanind++] = curchar;
1733 if (cleanind == sizeof(cleanname) - 1)
1736 } while (curchar != '\0');
1738 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1740 (int)(cl->ping * 1000.0f),
1753 extern void SV_SendServerinfo (client_t *client);
1754 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1756 int i, ret, clientnum, best;
1760 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1762 // see if we can identify the sender as a local player
1763 // (this is necessary for rcon to send a reliable reply if the client is
1764 // actually on the server, not sending remotely)
1765 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1766 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1768 if (i == svs.maxclients)
1773 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1775 // received a command string - strip off the packaging and put it
1776 // into our string buffer with NULL termination
1779 length = min(length, (int)sizeof(stringbuf) - 1);
1780 memcpy(stringbuf, data, length);
1781 stringbuf[length] = 0;
1784 if (developer.integer)
1786 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1787 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1788 Com_HexDumpToConsole(data, length);
1791 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1793 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1795 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1797 if (besttime > challenge[i].time)
1798 besttime = challenge[best = i].time;
1800 // if we did not find an exact match, choose the oldest and
1801 // update address and string
1802 if (i == MAX_CHALLENGES)
1805 challenge[i].address = *peeraddress;
1806 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1808 challenge[i].time = realtime;
1809 // send the challenge
1810 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1813 if (length > 8 && !memcmp(string, "connect\\", 8))
1817 if ((s = SearchInfostring(string, "challenge")))
1819 // validate the challenge
1820 for (i = 0;i < MAX_CHALLENGES;i++)
1821 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1823 if (i < MAX_CHALLENGES)
1825 // check engine protocol
1826 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1828 if (developer.integer)
1829 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1830 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
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 && realtime - client->connecttime < net_messagerejointimeout.value)
1840 // client is still trying to connect,
1841 // so we send a duplicate reply
1842 if (developer.integer)
1843 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1844 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1847 else if (clientnum < svs.maxclients)
1849 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1851 // client crashed and is coming back, keep their stuff intact
1852 SV_SendServerinfo(client);
1853 //host_client = client;
1854 //SV_DropClient (true);
1861 // this is a new client, find a slot
1862 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1863 if (!client->active)
1865 if (clientnum < svs.maxclients)
1867 // prepare the client struct
1868 if ((conn = NetConn_Open(mysocket, peeraddress)))
1870 // allocated connection
1871 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1872 if (developer.integer)
1873 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1874 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1875 // now set up the client
1877 SV_ConnectClient(clientnum, conn);
1879 NetConn_Heartbeat(1);
1885 if (developer.integer)
1886 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1887 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1895 if (length >= 7 && !memcmp(string, "getinfo", 7))
1897 const char *challenge = NULL;
1899 // If there was a challenge in the getinfo message
1900 if (length > 8 && string[7] == ' ')
1901 challenge = string + 8;
1903 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1905 if (developer.integer)
1906 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1907 NetConn_WriteString(mysocket, response, peeraddress);
1911 if (length >= 9 && !memcmp(string, "getstatus", 9))
1913 const char *challenge = NULL;
1915 // If there was a challenge in the getinfo message
1916 if (length > 10 && string[9] == ' ')
1917 challenge = string + 10;
1919 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1921 if (developer.integer)
1922 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1923 NetConn_WriteString(mysocket, response, peeraddress);
1927 if (length >= 5 && !memcmp(string, "rcon ", 5))
1930 char *s = string + 5;
1932 for (i = 0;*s > ' ';s++)
1933 if (i < (int)sizeof(password) - 1)
1936 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
1938 // looks like a legitimate rcon command with the correct password
1939 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
1940 rcon_redirect = true;
1941 rcon_redirect_bufferpos = 0;
1942 Cmd_ExecuteString(s, src_command);
1943 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
1944 rcon_redirect = false;
1945 // print resulting text to client
1946 // if client is playing, send a reliable reply instead of
1950 // if the netconnection is loop, then this is the
1951 // local player on a listen mode server, and it would
1952 // result in duplicate printing to the console
1953 // (not that the local player should be using rcon
1954 // when they have the console)
1955 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
1956 SV_ClientPrintf("%s", rcon_redirect_buffer);
1961 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
1962 NetConn_WriteString(mysocket, response, peeraddress);
1968 if (!strncmp(string, "ping", 4))
1970 if (developer.integer)
1971 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1972 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1975 if (!strncmp(string, "ack", 3))
1978 // we may not have liked the packet, but it was a command packet, so
1979 // we're done processing this packet now
1982 // LordHavoc: disabled netquake control packet support in server
1986 // netquake control packets, supported for compatibility only
1987 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1992 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1996 //if (developer.integer)
1997 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
1998 if (length >= (int)strlen("QUAKE") + 1 + 1)
2000 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
2002 if (developer.integer)
2003 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
2004 SZ_Clear(&net_message);
2005 // save space for the header, filled in later
2006 MSG_WriteLong(&net_message, 0);
2007 MSG_WriteByte(&net_message, CCREP_REJECT);
2008 MSG_WriteString(&net_message, "Incompatible version.\n");
2009 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2010 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2011 SZ_Clear(&net_message);
2015 // see if this is a duplicate connection request
2016 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2017 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2019 if (clientnum < svs.maxclients)
2021 // duplicate connection request
2022 if (realtime - client->connecttime < 2.0)
2024 // client is still trying to connect,
2025 // so we send a duplicate reply
2026 if (developer.integer)
2027 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
2028 SZ_Clear(&net_message);
2029 // save space for the header, filled in later
2030 MSG_WriteLong(&net_message, 0);
2031 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2032 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
2033 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2034 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2035 SZ_Clear(&net_message);
2038 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
2040 SV_SendServerinfo(client);
2041 // the old client hasn't sent us anything
2042 // in quite a while, so kick off and let
2043 // the retry take care of it...
2044 //host_client = client;
2045 //SV_DropClient (true);
2051 // this is a new client, find a slot
2052 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2053 if (!client->active)
2055 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
2057 // connect to the client
2058 // everything is allocated, just fill in the details
2059 strlcpy (conn->address, addressstring2, sizeof (conn->address));
2060 if (developer.integer)
2061 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
2062 // send back the info about the server connection
2063 SZ_Clear(&net_message);
2064 // save space for the header, filled in later
2065 MSG_WriteLong(&net_message, 0);
2066 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2067 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
2068 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2069 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2070 SZ_Clear(&net_message);
2071 // now set up the client struct
2073 SV_ConnectClient(clientnum, conn);
2075 NetConn_Heartbeat(1);
2079 //if (developer.integer)
2080 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
2081 // no room; try to let player know
2082 SZ_Clear(&net_message);
2083 // save space for the header, filled in later
2084 MSG_WriteLong(&net_message, 0);
2085 MSG_WriteByte(&net_message, CCREP_REJECT);
2086 MSG_WriteString(&net_message, "Server is full.\n");
2087 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2088 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2089 SZ_Clear(&net_message);
2096 case CCREQ_SERVER_INFO:
2097 if (developer.integer)
2098 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
2099 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
2101 if (developer.integer)
2102 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
2103 SZ_Clear(&net_message);
2104 // save space for the header, filled in later
2105 MSG_WriteLong(&net_message, 0);
2106 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
2107 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
2108 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
2109 MSG_WriteString(&net_message, hostname.string);
2110 MSG_WriteString(&net_message, sv.name);
2111 MSG_WriteByte(&net_message, net_activeconnections);
2112 MSG_WriteByte(&net_message, svs.maxclients);
2113 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2114 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2115 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2116 SZ_Clear(&net_message);
2119 case CCREQ_PLAYER_INFO:
2120 if (developer.integer)
2121 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
2124 int playerNumber, activeNumber, clientNumber;
2127 playerNumber = MSG_ReadByte();
2129 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
2130 if (client->active && ++activeNumber == playerNumber)
2132 if (clientNumber != svs.maxclients)
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_PLAYER_INFO);
2138 MSG_WriteByte(&net_message, playerNumber);
2139 MSG_WriteString(&net_message, client->name);
2140 MSG_WriteLong(&net_message, client->colors);
2141 MSG_WriteLong(&net_message, (int)client->edict->fields.server->frags);
2142 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
2143 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
2144 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2145 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2146 SZ_Clear(&net_message);
2150 case CCREQ_RULE_INFO:
2151 if (developer.integer)
2152 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
2158 // find the search start location
2159 prevCvarName = MSG_ReadString();
2160 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
2162 // send the response
2163 SZ_Clear(&net_message);
2164 // save space for the header, filled in later
2165 MSG_WriteLong(&net_message, 0);
2166 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
2169 MSG_WriteString(&net_message, var->name);
2170 MSG_WriteString(&net_message, var->string);
2172 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2173 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2174 SZ_Clear(&net_message);
2181 // we may not have liked the packet, but it was a valid control
2182 // packet, so we're done processing this packet now
2189 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol)) == 2)
2192 SV_ReadClientMessage();
2201 void NetConn_ServerFrame(void)
2204 lhnetaddress_t peeraddress;
2205 NetConn_UpdateSockets();
2206 for (i = 0;i < sv_numsockets;i++)
2207 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2208 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2209 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2211 // never timeout loopback connections
2212 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2214 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2215 SV_DropClient(false);
2220 void NetConn_QueryMasters(void)
2224 lhnetaddress_t masteraddress;
2225 lhnetaddress_t broadcastaddress;
2228 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2231 // 26000 is the default quake server port, servers on other ports will not
2233 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2234 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2236 for (i = 0;i < cl_numsockets;i++)
2240 // search LAN for Quake servers
2241 SZ_Clear(&net_message);
2242 // save space for the header, filled in later
2243 MSG_WriteLong(&net_message, 0);
2244 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2245 MSG_WriteString(&net_message, "QUAKE");
2246 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2247 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2248 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2249 SZ_Clear(&net_message);
2251 // search LAN for DarkPlaces servers
2252 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2254 // build the getservers message to send to the dpmaster master servers
2255 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2258 for (masternum = 0;sv_masters[masternum].name;masternum++)
2260 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2263 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2267 // only query QuakeWorld servers when in GAME_NORMAL mode as that
2268 // is all QuakeWorld is designed for, we don't want QuakeWorld
2269 // servers showing up when running another game (not even the
2270 // mission packs, as if a QuakeWorld server was using their data
2271 // you could still play with -game hipnotic rather than -hipnotic)
2272 if (gamemode == GAME_NORMAL)
2274 // build the getservers message to send to the qwmaster master servers
2275 // note this has no -1 prefix, and the trailing nul byte is sent
2276 dpsnprintf(request, sizeof(request), "c\n");
2279 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
2281 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2284 NetConn_Write(cl_sockets[i], request, 7, &masteraddress);
2290 if (!masterquerycount)
2292 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2293 M_Update_Return_Reason("No network");
2297 void NetConn_Heartbeat(int priority)
2299 lhnetaddress_t masteraddress;
2301 lhnetsocket_t *mysocket;
2303 // if it's a state change (client connected), limit next heartbeat to no
2304 // more than 30 sec in the future
2305 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2306 nextheartbeattime = realtime + 30.0;
2308 // limit heartbeatperiod to 30 to 270 second range,
2309 // lower limit is to avoid abusing master servers with excess traffic,
2310 // upper limit is to avoid timing out on the master server (which uses
2312 if (sv_heartbeatperiod.value < 30)
2313 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2314 if (sv_heartbeatperiod.value > 270)
2315 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2317 // make advertising optional and don't advertise singleplayer games, and
2318 // only send a heartbeat as often as the admin wants
2319 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2321 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2322 for (masternum = 0;sv_masters[masternum].name;masternum++)
2323 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2324 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2328 static void Net_Heartbeat_f(void)
2331 NetConn_Heartbeat(2);
2333 Con_Print("No server running, can not heartbeat to master server.\n");
2336 void PrintStats(netconn_t *conn)
2338 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2339 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2341 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2344 void Net_Stats_f(void)
2347 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2348 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2349 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2350 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2351 Con_Printf("packetsSent = %i\n", packetsSent);
2352 Con_Printf("packetsReSent = %i\n", packetsReSent);
2353 Con_Printf("packetsReceived = %i\n", packetsReceived);
2354 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2355 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2356 Con_Print("connections =\n");
2357 for (conn = netconn_list;conn;conn = conn->next)
2361 void Net_Slist_f(void)
2363 ServerList_ResetMasks();
2364 serverlist_sortbyfield = SLIF_PING;
2365 serverlist_sortdescending = false;
2366 if (m_state != m_slist) {
2367 Con_Print("Sending requests to master servers\n");
2368 ServerList_QueryList();
2369 serverlist_consoleoutput = true;
2370 Con_Print("Listening for replies...\n");
2372 ServerList_QueryList();
2375 void NetConn_Init(void)
2378 lhnetaddress_t tempaddress;
2379 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2380 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2381 Cmd_AddCommand("net_slist", Net_Slist_f, "query master series and print all server information");
2382 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2383 Cvar_RegisterVariable(&net_slist_queriespersecond);
2384 Cvar_RegisterVariable(&net_slist_queriesperframe);
2385 Cvar_RegisterVariable(&net_slist_timeout);
2386 Cvar_RegisterVariable(&net_slist_maxtries);
2387 Cvar_RegisterVariable(&net_messagetimeout);
2388 Cvar_RegisterVariable(&net_messagerejointimeout);
2389 Cvar_RegisterVariable(&net_connecttimeout);
2390 Cvar_RegisterVariable(&cl_netlocalping);
2391 Cvar_RegisterVariable(&cl_netpacketloss);
2392 Cvar_RegisterVariable(&hostname);
2393 Cvar_RegisterVariable(&developer_networking);
2394 Cvar_RegisterVariable(&cl_netport);
2395 Cvar_RegisterVariable(&sv_netport);
2396 Cvar_RegisterVariable(&net_address);
2397 //Cvar_RegisterVariable(&net_address_ipv6);
2398 Cvar_RegisterVariable(&sv_public);
2399 Cvar_RegisterVariable(&sv_heartbeatperiod);
2400 for (i = 0;sv_masters[i].name;i++)
2401 Cvar_RegisterVariable(&sv_masters[i]);
2402 // 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.
2403 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2405 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2407 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
2408 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2411 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2413 // 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
2414 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2416 i = atoi(com_argv[i + 1]);
2417 if (i >= 0 && i < 65536)
2419 Con_Printf("-port option used, setting port cvar to %i\n", i);
2420 Cvar_SetValueQuick(&sv_netport, i);
2423 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2427 net_message.data = net_message_buf;
2428 net_message.maxsize = sizeof(net_message_buf);
2429 net_message.cursize = 0;
2433 void NetConn_Shutdown(void)
2435 NetConn_CloseClientPorts();
2436 NetConn_CloseServerPorts();