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"};
30 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120"};
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", ""},
36 {CVAR_SAVE, "sv_master2", ""},
37 {CVAR_SAVE, "sv_master3", ""},
38 {CVAR_SAVE, "sv_master4", ""},
39 {0, "sv_masterextra1", "ghdigital.com"}, //69.59.212.88
40 {0, "sv_masterextra2", "dpmaster.deathmask.net"}, //209.164.24.243
41 {0, "sv_masterextra3", "12.166.196.192"}, //blaze.mindphukd.org (doesn't resolve currently but works as an ip)
45 static double nextheartbeattime = 0;
47 sizebuf_t net_message;
48 static qbyte net_message_buf[NET_MAXMESSAGE];
50 cvar_t net_messagetimeout = {0, "net_messagetimeout","300"};
51 cvar_t net_messagerejointimeout = {0, "net_messagerejointimeout","10"};
52 cvar_t net_connecttimeout = {0, "net_connecttimeout","10"};
53 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED"};
54 cvar_t developer_networking = {0, "developer_networking", "0"};
56 cvar_t cl_netlocalping = {0, "cl_netlocalping","0"};
57 static cvar_t cl_netpacketloss = {0, "cl_netpacketloss","0"};
58 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20"};
59 static cvar_t net_slist_queriesperframe = {0, "net_slist_queriesperframe", "4"};
60 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4"};
61 static cvar_t net_slist_maxtries = {0, "net_slist_maxtries", "3"};
63 /* statistic counters */
64 static int packetsSent = 0;
65 static int packetsReSent = 0;
66 static int packetsReceived = 0;
67 static int receivedDuplicateCount = 0;
68 static int droppedDatagrams = 0;
70 static int unreliableMessagesSent = 0;
71 static int unreliableMessagesReceived = 0;
72 static int reliableMessagesSent = 0;
73 static int reliableMessagesReceived = 0;
75 double masterquerytime = -1000;
76 int masterquerycount = 0;
77 int masterreplycount = 0;
78 int serverquerycount = 0;
79 int serverreplycount = 0;
81 // this is only false if there are still servers left to query
82 int serverlist_querysleep = true;
84 static qbyte sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
85 static qbyte readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
88 lhnetsocket_t *cl_sockets[16];
90 lhnetsocket_t *sv_sockets[16];
92 netconn_t *netconn_list = NULL;
93 mempool_t *netconn_mempool = NULL;
95 cvar_t cl_netport = {0, "cl_port", "0"};
96 cvar_t sv_netport = {0, "port", "26000"};
97 cvar_t net_address = {0, "net_address", "0.0.0.0"};
98 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]"};
100 // ServerList interface
101 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
102 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
104 serverlist_infofield_t serverlist_sortbyfield;
105 qboolean serverlist_sortdescending;
107 int serverlist_viewcount = 0;
108 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
110 int serverlist_cachecount;
111 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
113 qboolean serverlist_consoleoutput;
115 // helper function to insert a value into the viewset
116 // spare entries will be removed
117 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
120 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
121 i = serverlist_viewcount++;
123 i = SERVERLIST_VIEWLISTSIZE - 1;
126 for( ; i > index ; i-- )
127 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
129 serverlist_viewlist[index] = entry;
132 // we suppose serverlist_viewcount to be valid, ie > 0
133 static void _ServerList_ViewList_Helper_Remove( int index )
135 serverlist_viewcount--;
136 for( ; index < serverlist_viewcount ; index++ )
137 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
140 // returns true if A should be inserted before B
141 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
143 int result = 0; // > 0 if for numbers A > B and for text if A < B
145 switch( serverlist_sortbyfield ) {
147 result = A->info.ping - B->info.ping;
149 case SLIF_MAXPLAYERS:
150 result = A->info.maxplayers - B->info.maxplayers;
152 case SLIF_NUMPLAYERS:
153 result = A->info.numplayers - B->info.numplayers;
156 result = A->info.protocol - B->info.protocol;
159 result = strcmp( B->info.cname, A->info.cname );
162 result = strcmp( B->info.game, A->info.game );
165 result = strcmp( B->info.map, A->info.map );
168 result = strcmp( B->info.mod, A->info.mod );
171 result = strcmp( B->info.name, A->info.name );
174 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
178 if( serverlist_sortdescending )
183 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
185 // This should actually be done with some intermediate and end-of-function return
197 case SLMO_GREATEREQUAL:
199 case SLMO_NOTCONTAIN:
202 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
207 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
209 // Same here, also using an intermediate & final return would be more appropriate
213 return *B && !!strstr( A, B ); // we want a real bool
214 case SLMO_NOTCONTAIN:
215 return !*B || !strstr( A, B );
217 return strcmp( A, B ) < 0;
219 return strcmp( A, B ) <= 0;
221 return strcmp( A, B ) == 0;
223 return strcmp( A, B ) > 0;
225 return strcmp( A, B ) != 0;
226 case SLMO_GREATEREQUAL:
227 return strcmp( A, B ) >= 0;
229 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
234 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
236 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
238 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
240 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
242 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
244 if( *mask->info.cname
245 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
248 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
251 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
254 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
257 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
262 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
266 // FIXME: change this to be more readable (...)
267 // now check whether it passes through the masks
268 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
269 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
272 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
273 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
275 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
278 if( !serverlist_viewcount ) {
279 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
282 // ok, insert it, we just need to find out where exactly:
285 // check whether to insert it as new first item
286 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
287 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
289 } // check whether to insert it as new last item
290 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
291 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
295 end = serverlist_viewcount - 1;
296 while( end > start + 1 )
298 mid = (start + end) / 2;
299 // test the item that lies in the middle between start and end
300 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
301 // the item has to be in the upper half
304 // the item has to be in the lower half
307 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
310 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
313 for( i = 0; i < serverlist_viewcount; i++ )
315 if (serverlist_viewlist[i] == entry)
317 _ServerList_ViewList_Helper_Remove(i);
323 void ServerList_RebuildViewList(void)
327 serverlist_viewcount = 0;
328 for( i = 0 ; i < serverlist_cachecount ; i++ )
329 if( serverlist_cache[i].query == SQS_QUERIED )
330 ServerList_ViewList_Insert( &serverlist_cache[i] );
333 void ServerList_ResetMasks(void)
335 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
336 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
340 static void _ServerList_Test(void)
343 for( i = 0 ; i < 1024 ; i++ ) {
344 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
345 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
346 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, 128, "Black's ServerList Test %i", i );
347 serverlist_cache[serverlist_cachecount].finished = true;
348 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
349 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
350 serverlist_cachecount++;
355 void ServerList_QueryList(void)
357 masterquerytime = realtime;
358 masterquerycount = 0;
359 masterreplycount = 0;
360 serverquerycount = 0;
361 serverreplycount = 0;
362 serverlist_cachecount = 0;
363 serverlist_viewcount = 0;
364 serverlist_consoleoutput = false;
366 //_ServerList_Test();
368 NetConn_QueryMasters();
373 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
375 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
379 if (cl_netpacketloss.integer)
380 for (i = 0;i < cl_numsockets;i++)
381 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
383 if (developer_networking.integer)
385 char addressstring[128], addressstring2[128];
386 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
389 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
390 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
391 Com_HexDumpToConsole(data, length);
394 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
399 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
403 if (cl_netpacketloss.integer)
404 for (i = 0;i < cl_numsockets;i++)
405 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
407 ret = LHNET_Write(mysocket, data, length, peeraddress);
408 if (developer_networking.integer)
410 char addressstring[128], addressstring2[128];
411 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
412 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
413 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
414 Com_HexDumpToConsole(data, length);
419 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
421 // note this does not include the trailing NULL because we add that in the parser
422 return NetConn_Write(mysocket, string, strlen(string), peeraddress);
425 int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data)
427 unsigned int packetLen;
428 unsigned int dataLen;
430 unsigned int *header;
433 if (data->cursize == 0)
434 Sys_Error("Datagram_SendMessage: zero length message\n");
436 if (data->cursize > (int)sizeof(conn->sendMessage))
437 Sys_Error("Datagram_SendMessage: message too big (%u > %u)\n", data->cursize, sizeof(conn->sendMessage));
439 if (conn->canSend == false)
440 Sys_Error("SendMessage: called with canSend == false\n");
443 memcpy(conn->sendMessage, data->data, data->cursize);
444 conn->sendMessageLength = data->cursize;
446 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
448 dataLen = conn->sendMessageLength;
453 dataLen = MAX_PACKETFRAGMENT;
457 packetLen = NET_HEADERSIZE + dataLen;
459 header = (void *)sendbuffer;
460 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
461 header[1] = BigLong(conn->sendSequence);
462 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
464 conn->sendSequence++;
465 conn->canSend = false;
467 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
470 conn->lastSendTime = realtime;
472 reliableMessagesSent++;
476 static void NetConn_SendMessageNext(netconn_t *conn)
478 unsigned int packetLen;
479 unsigned int dataLen;
481 unsigned int *header;
483 if (conn->sendMessageLength && !conn->canSend && conn->sendNext)
485 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
487 dataLen = conn->sendMessageLength;
492 dataLen = MAX_PACKETFRAGMENT;
496 packetLen = NET_HEADERSIZE + dataLen;
498 header = (void *)sendbuffer;
499 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
500 header[1] = BigLong(conn->sendSequence);
501 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
503 conn->sendSequence++;
504 conn->sendNext = false;
506 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
509 conn->lastSendTime = realtime;
514 static void NetConn_ReSendMessage(netconn_t *conn)
516 unsigned int packetLen;
517 unsigned int dataLen;
519 unsigned int *header;
521 if (conn->sendMessageLength && !conn->canSend && (realtime - conn->lastSendTime) > 1.0)
523 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
525 dataLen = conn->sendMessageLength;
530 dataLen = MAX_PACKETFRAGMENT;
534 packetLen = NET_HEADERSIZE + dataLen;
536 header = (void *)sendbuffer;
537 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
538 header[1] = BigLong(conn->sendSequence - 1);
539 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
541 conn->sendNext = false;
543 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
546 conn->lastSendTime = realtime;
551 qboolean NetConn_CanSendMessage(netconn_t *conn)
553 return conn->canSend;
556 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data)
561 packetLen = NET_HEADERSIZE + data->cursize;
564 if (data->cursize == 0)
565 Sys_Error("Datagram_SendUnreliableMessage: zero length message\n");
567 if (packetLen > (int)sizeof(sendbuffer))
568 Sys_Error("Datagram_SendUnreliableMessage: message too big %u\n", data->cursize);
571 header = (void *)sendbuffer;
572 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
573 header[1] = BigLong(conn->unreliableSendSequence);
574 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
576 conn->unreliableSendSequence++;
578 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
582 unreliableMessagesSent++;
586 void NetConn_CloseClientPorts(void)
588 for (;cl_numsockets > 0;cl_numsockets--)
589 if (cl_sockets[cl_numsockets - 1])
590 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
593 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
595 lhnetaddress_t address;
597 char addressstring2[1024];
598 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
600 if ((s = LHNET_OpenSocket_Connectionless(&address)))
602 cl_sockets[cl_numsockets++] = s;
603 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
604 Con_Printf("Client opened a socket on address %s\n", addressstring2);
608 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
609 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
613 Con_Printf("Client unable to parse address %s\n", addressstring);
616 void NetConn_OpenClientPorts(void)
619 NetConn_CloseClientPorts();
620 port = bound(0, cl_netport.integer, 65535);
621 if (cl_netport.integer != port)
622 Cvar_SetValueQuick(&cl_netport, port);
623 Con_Printf("Client using port %i\n", port);
624 NetConn_OpenClientPort("local:2", 0);
625 NetConn_OpenClientPort(net_address.string, port);
626 //NetConn_OpenClientPort(net_address_ipv6.string, port);
629 void NetConn_CloseServerPorts(void)
631 for (;sv_numsockets > 0;sv_numsockets--)
632 if (sv_sockets[sv_numsockets - 1])
633 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
636 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
638 lhnetaddress_t address;
640 char addressstring2[1024];
641 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
643 if ((s = LHNET_OpenSocket_Connectionless(&address)))
645 sv_sockets[sv_numsockets++] = s;
646 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
647 Con_Printf("Server listening on address %s\n", addressstring2);
651 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
652 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
656 Con_Printf("Server unable to parse address %s\n", addressstring);
659 void NetConn_OpenServerPorts(int opennetports)
662 NetConn_CloseServerPorts();
663 port = bound(0, sv_netport.integer, 65535);
666 Con_Printf("Server using port %i\n", port);
667 if (sv_netport.integer != port)
668 Cvar_SetValueQuick(&sv_netport, port);
669 if (cls.state != ca_dedicated)
670 NetConn_OpenServerPort("local:1", 0);
673 NetConn_OpenServerPort(net_address.string, port);
674 //NetConn_OpenServerPort(net_address_ipv6.string, port);
676 if (sv_numsockets == 0)
677 Host_Error("NetConn_OpenServerPorts: unable to open any ports!\n");
680 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
682 int i, a = LHNETADDRESS_GetAddressType(address);
683 for (i = 0;i < cl_numsockets;i++)
684 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
685 return cl_sockets[i];
689 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
691 int i, a = LHNETADDRESS_GetAddressType(address);
692 for (i = 0;i < sv_numsockets;i++)
693 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
694 return sv_sockets[i];
698 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
701 conn = Mem_Alloc(netconn_mempool, sizeof(*conn));
702 conn->mysocket = mysocket;
703 conn->peeraddress = *peeraddress;
704 conn->canSend = true;
705 conn->lastMessageTime = realtime;
706 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
707 // reduce effectiveness of connection request floods
708 conn->timeout = realtime + net_connecttimeout.value;
709 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
710 conn->next = netconn_list;
715 void NetConn_Close(netconn_t *conn)
718 // remove connection from list
719 if (conn == netconn_list)
720 netconn_list = conn->next;
723 for (c = netconn_list;c;c = c->next)
727 c->next = conn->next;
731 // not found in list, we'll avoid crashing here...
739 static int clientport = -1;
740 static int clientport2 = -1;
741 static int hostport = -1;
742 static void NetConn_UpdateServerStuff(void)
744 if (cls.state != ca_dedicated)
746 if (clientport2 != cl_netport.integer)
748 clientport2 = cl_netport.integer;
749 if (cls.state == ca_connected)
750 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
752 if (cls.state == ca_disconnected && clientport != clientport2)
754 clientport = clientport2;
755 NetConn_CloseClientPorts();
757 if (cl_numsockets == 0)
758 NetConn_OpenClientPorts();
761 if (hostport != sv_netport.integer)
763 hostport = sv_netport.integer;
765 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
769 int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length)
773 unsigned int sequence;
778 qlength = (unsigned int)BigLong(((int *)data)[0]);
779 flags = qlength & ~NETFLAG_LENGTH_MASK;
780 qlength &= NETFLAG_LENGTH_MASK;
781 // control packets were already handled
782 if (!(flags & NETFLAG_CTL) && qlength == length)
784 sequence = BigLong(((int *)data)[1]);
788 if (flags & NETFLAG_UNRELIABLE)
790 if (sequence >= conn->unreliableReceiveSequence)
792 if (sequence > conn->unreliableReceiveSequence)
794 count = sequence - conn->unreliableReceiveSequence;
795 droppedDatagrams += count;
796 Con_DPrintf("Dropped %u datagram(s)\n", count);
798 conn->unreliableReceiveSequence = sequence + 1;
799 conn->lastMessageTime = realtime;
800 conn->timeout = realtime + net_messagetimeout.value;
801 unreliableMessagesReceived++;
804 SZ_Clear(&net_message);
805 SZ_Write(&net_message, data, length);
811 Con_DPrint("Got a stale datagram\n");
814 else if (flags & NETFLAG_ACK)
816 if (sequence == (conn->sendSequence - 1))
818 if (sequence == conn->ackSequence)
821 if (conn->ackSequence != conn->sendSequence)
822 Con_DPrint("ack sequencing error\n");
823 conn->lastMessageTime = realtime;
824 conn->timeout = realtime + net_messagetimeout.value;
825 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
826 if (conn->sendMessageLength > 0)
828 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
829 conn->sendNext = true;
830 NetConn_SendMessageNext(conn);
834 conn->sendMessageLength = 0;
835 conn->canSend = true;
839 Con_DPrint("Duplicate ACK received\n");
842 Con_DPrint("Stale ACK received\n");
845 else if (flags & NETFLAG_DATA)
847 unsigned int temppacket[2];
848 temppacket[0] = BigLong(8 | NETFLAG_ACK);
849 temppacket[1] = BigLong(sequence);
850 NetConn_Write(conn->mysocket, (qbyte *)temppacket, 8, &conn->peeraddress);
851 if (sequence == conn->receiveSequence)
853 conn->lastMessageTime = realtime;
854 conn->timeout = realtime + net_messagetimeout.value;
855 conn->receiveSequence++;
856 if( conn->receiveMessageLength + length <= sizeof( conn->receiveMessage ) ) {
857 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
858 conn->receiveMessageLength += length;
860 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
861 "Dropping the message!\n", sequence );
862 conn->receiveMessageLength = 0;
865 if (flags & NETFLAG_EOM)
867 reliableMessagesReceived++;
868 length = conn->receiveMessageLength;
869 conn->receiveMessageLength = 0;
872 SZ_Clear(&net_message);
873 SZ_Write(&net_message, conn->receiveMessage, length);
880 receivedDuplicateCount++;
888 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
890 cls.connect_trying = false;
891 M_Update_Return_Reason("");
892 // the connection request succeeded, stop current connection and set up a new connection
894 // if we're connecting to a remote server, shut down any local server
895 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
896 Host_ShutdownServer (false);
897 // allocate a net connection to keep track of things
898 cls.netcon = NetConn_Open(mysocket, peeraddress);
899 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
902 cls.demonum = -1; // not in the demo loop now
903 cls.state = ca_connected;
904 cls.signon = 0; // need all the signon messages before playing
907 int NetConn_IsLocalGame(void)
909 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
914 int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
918 char *string, addressstring2[128], cname[128], ipstring[32];
919 char stringbuf[16384];
921 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
923 // received a command string - strip off the packaging and put it
924 // into our string buffer with NULL termination
927 length = min(length, (int)sizeof(stringbuf) - 1);
928 memcpy(stringbuf, data, length);
929 stringbuf[length] = 0;
932 if (developer.integer)
934 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
935 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
936 Com_HexDumpToConsole(data, length);
939 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
941 char protocolnames[1400];
942 Protocol_Names(protocolnames, sizeof(protocolnames));
943 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
944 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
945 M_Update_Return_Reason("Got challenge response");
946 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
949 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
951 M_Update_Return_Reason("Accepted");
952 NetConn_ConnectionEstablished(mysocket, peeraddress);
955 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
957 char rejectreason[32];
958 cls.connect_trying = false;
960 length = max(length - 7, (int)sizeof(rejectreason) - 1);
961 memcpy(rejectreason, string, length);
962 rejectreason[length] = 0;
963 M_Update_Return_Reason(rejectreason);
966 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
968 serverlist_info_t *info;
973 // serverlist only uses text addresses
974 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
975 // search the cache for this server and update it
976 for( n = 0; n < serverlist_cachecount; n++ )
977 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
979 if( n == serverlist_cachecount ) {
980 // LAN search doesnt require an answer from the master server so we wont
981 // know the ping nor will it be initialized already...
984 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
987 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
988 // store the data the engine cares about (address and ping)
989 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
990 serverlist_cache[serverlist_cachecount].info.ping = 100000;
991 serverlist_cache[serverlist_cachecount].querytime = realtime;
992 // if not in the slist menu we should print the server to console
993 if (serverlist_consoleoutput) {
994 Con_Printf("querying %s\n", ipstring);
997 ++serverlist_cachecount;
1000 info = &serverlist_cache[n].info;
1001 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1002 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1003 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1004 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1005 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1006 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1007 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1009 if (info->ping == 100000)
1012 pingtime = (int)((realtime - serverlist_cache[n].querytime) * 1000.0);
1013 pingtime = bound(0, pingtime, 9999);
1015 info->ping = pingtime;
1017 // legacy/old stuff move it to the menu ASAP
1019 // build description strings for the things users care about
1020 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "%5d%c%3u/%3u %-65.65s", (int)pingtime, info->protocol != NET_PROTOCOL_VERSION ? '*' : ' ', info->numplayers, info->maxplayers, info->name);
1021 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);
1022 // if ping is especially high, display it as such
1023 if (pingtime >= 300)
1025 // orange numbers (lower block)
1026 for (i = 0;i < 5;i++)
1027 if (serverlist_cache[n].line1[i] != ' ')
1028 serverlist_cache[n].line1[i] += 128;
1030 else if (pingtime >= 200)
1032 // yellow numbers (in upper block)
1033 for (i = 0;i < 5;i++)
1034 if (serverlist_cache[n].line1[i] != ' ')
1035 serverlist_cache[n].line1[i] -= 30;
1037 if( serverlist_cache[n].query == SQS_QUERIED ) {
1038 ServerList_ViewList_Remove( &serverlist_cache[n] );
1040 // if not in the slist menu we should print the server to console (if wanted)
1041 else if( serverlist_consoleoutput )
1042 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1043 // and finally, update the view set
1044 ServerList_ViewList_Insert( &serverlist_cache[n] );
1045 serverlist_cache[n].query = SQS_QUERIED;
1049 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1051 // Extract the IP addresses
1055 if (serverlist_consoleoutput)
1056 Con_Print("received server list...\n");
1057 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1061 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], (data[5] << 8) | data[6]);
1062 if (developer.integer)
1063 Con_Printf("Requesting info from server %s\n", ipstring);
1064 // ignore the rest of the message if the serverlist is full
1065 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1067 // also ignore it if we have already queried it (other master server response)
1068 for( n = 0 ; n < serverlist_cachecount ; n++ )
1069 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1071 if( n >= serverlist_cachecount )
1075 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1076 // store the data the engine cares about (address and ping)
1077 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1078 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1079 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1081 ++serverlist_cachecount;
1084 // move on to next address in packet
1088 // begin or resume serverlist queries
1089 serverlist_querysleep = false;
1093 if (!strncmp(string, "ping", 4))
1095 if (developer.integer)
1096 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1097 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1100 if (!strncmp(string, "ack", 3))
1103 // we may not have liked the packet, but it was a command packet, so
1104 // we're done processing this packet now
1107 // netquake control packets, supported for compatibility only
1108 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1113 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1117 if (developer.integer)
1118 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1119 if (cls.connect_trying)
1121 lhnetaddress_t clientportaddress;
1122 clientportaddress = *peeraddress;
1125 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
1128 LHNETADDRESS_SetPort(&clientportaddress, port);
1130 M_Update_Return_Reason("Accepted");
1131 NetConn_ConnectionEstablished(mysocket, &clientportaddress);
1135 if (developer.integer)
1136 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1137 cls.connect_trying = false;
1138 M_Update_Return_Reason(data);
1141 case CCREP_SERVER_INFO:
1142 if (developer.integer)
1143 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1144 if (cls.state != ca_dedicated)
1146 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
1147 // string we just ignore it and keep the real address
1149 // serverlist only uses text addresses
1150 cname = UDP_AddrToString(readaddr);
1151 // search the cache for this server
1152 for (n = 0; n < hostCacheCount; n++)
1153 if (!strcmp(cname, serverlist[n].cname))
1156 if (n == hostCacheCount && hostCacheCount < SERVERLISTSIZE)
1159 memset(&serverlist[n], 0, sizeof(serverlist[n]));
1160 strlcpy (serverlist[n].name, MSG_ReadString(), sizeof (serverlist[n].name));
1161 strlcpy (serverlist[n].map, MSG_ReadString(), sizeof (serverlist[n].map));
1162 serverlist[n].users = MSG_ReadByte();
1163 serverlist[n].maxusers = MSG_ReadByte();
1165 if (c != NET_PROTOCOL_VERSION)
1167 strlcpy (serverlist[n].cname, serverlist[n].name, sizeof (serverlist[n].cname));
1168 strcpy(serverlist[n].name, "*");
1169 strlcat (serverlist[n].name, serverlist[n].cname, sizeof(serverlist[n].name));
1171 strlcpy (serverlist[n].cname, cname, sizeof (serverlist[n].cname));
1175 case CCREP_PLAYER_INFO:
1176 // we got a CCREP_PLAYER_INFO??
1177 //if (developer.integer)
1178 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1180 case CCREP_RULE_INFO:
1181 // we got a CCREP_RULE_INFO??
1182 //if (developer.integer)
1183 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1189 // we may not have liked the packet, but it was a valid control
1190 // packet, so we're done processing this packet now
1194 if (length >= (int)NET_HEADERSIZE && cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress) && (ret = NetConn_ReceivedMessage(cls.netcon, data, length)) == 2)
1195 CL_ParseServerMessage();
1199 void NetConn_QueryQueueFrame(void)
1205 static double querycounter = 0;
1207 if (serverlist_querysleep)
1210 // each time querycounter reaches 1.0 issue a query
1211 querycounter += host_realframetime * net_slist_queriespersecond.value;
1212 maxqueries = (int)querycounter;
1213 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1214 querycounter -= maxqueries;
1216 if( maxqueries == 0 ) {
1220 // scan serverlist and issue queries as needed
1221 serverlist_querysleep = true;
1223 timeouttime = realtime - net_slist_timeout.value;
1224 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1226 serverlist_entry_t *entry = &serverlist_cache[ index ];
1227 if( entry->query != SQS_QUERYING )
1232 serverlist_querysleep = false;
1233 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1238 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1240 lhnetaddress_t address;
1243 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1244 for (socket = 0; socket < cl_numsockets ; socket++) {
1245 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1248 entry->querytime = realtime;
1249 entry->querycounter++;
1251 // if not in the slist menu we should print the server to console
1252 if (serverlist_consoleoutput)
1253 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1259 entry->query = SQS_TIMEDOUT;
1264 void NetConn_ClientFrame(void)
1267 lhnetaddress_t peeraddress;
1269 NetConn_UpdateServerStuff();
1270 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1272 if (cls.connect_remainingtries == 0)
1273 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1274 cls.connect_nextsendtime = realtime + 1;
1275 cls.connect_remainingtries--;
1276 if (cls.connect_remainingtries <= -10)
1278 cls.connect_trying = false;
1279 M_Update_Return_Reason("Connect: Failed");
1282 // try challenge first (newer server)
1283 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1284 // then try netquake as a fallback (old server, or netquake)
1285 SZ_Clear(&net_message);
1286 // save space for the header, filled in later
1287 MSG_WriteLong(&net_message, 0);
1288 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1289 MSG_WriteString(&net_message, "QUAKE");
1290 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1291 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1292 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1293 SZ_Clear(&net_message);
1295 for (i = 0;i < cl_numsockets;i++) {
1296 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0) {
1297 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1300 NetConn_QueryQueueFrame();
1301 if (cls.netcon && realtime > cls.netcon->timeout)
1303 Con_Print("Connection timed out\n");
1305 Host_ShutdownServer (false);
1307 for (conn = netconn_list;conn;conn = conn->next)
1308 NetConn_ReSendMessage(conn);
1311 #define MAX_CHALLENGES 128
1314 lhnetaddress_t address;
1318 challenge[MAX_CHALLENGES];
1320 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1324 for (i = 0;i < bufferlength - 1;i++)
1328 c = rand () % (127 - 33) + 33;
1329 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1335 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1337 unsigned int nb_clients = 0, i;
1340 // How many clients are there?
1341 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1342 if (svs.clients[i].active)
1345 // TODO: we should add more information for the full status string
1346 length = dpsnprintf(out_msg, out_size,
1347 "\377\377\377\377%s\x0A"
1348 "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
1349 "\\clients\\%d\\mapname\\%s\\hostname\\%s""\\protocol\\%d"
1352 fullstatus ? "statusResponse" : "infoResponse",
1353 gamename, com_modname, svs.maxclients,
1354 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1355 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1356 fullstatus ? "\n" : "");
1358 // Make sure it fits in the buffer
1367 ptr = out_msg + length;
1368 left = out_size - length;
1370 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1372 client_t *cl = &svs.clients[i];
1375 int nameind, cleanind;
1377 char cleanname [sizeof(cl->name)];
1379 // Remove all characters '"' and '\' in the player name
1384 curchar = cl->name[nameind++];
1385 if (curchar != '"' && curchar != '\\')
1387 cleanname[cleanind++] = curchar;
1388 if (cleanind == sizeof(cleanname) - 1)
1391 } while (curchar != '\0');
1393 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1395 (int)(cl->ping * 1000.0f),
1408 extern void SV_SendServerinfo (client_t *client);
1409 int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
1411 int i, ret, clientnum, best;
1415 char *s, *string, response[512], addressstring2[128], stringbuf[16384];
1419 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1421 // received a command string - strip off the packaging and put it
1422 // into our string buffer with NULL termination
1425 length = min(length, (int)sizeof(stringbuf) - 1);
1426 memcpy(stringbuf, data, length);
1427 stringbuf[length] = 0;
1430 if (developer.integer)
1432 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1433 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1434 Com_HexDumpToConsole(data, length);
1437 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1439 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1441 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1443 if (besttime > challenge[i].time)
1444 besttime = challenge[best = i].time;
1446 // if we did not find an exact match, choose the oldest and
1447 // update address and string
1448 if (i == MAX_CHALLENGES)
1451 challenge[i].address = *peeraddress;
1452 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1454 challenge[i].time = realtime;
1455 // send the challenge
1456 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1459 if (length > 8 && !memcmp(string, "connect\\", 8))
1463 if ((s = SearchInfostring(string, "challenge")))
1465 // validate the challenge
1466 for (i = 0;i < MAX_CHALLENGES;i++)
1467 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1469 if (i < MAX_CHALLENGES)
1471 // check engine protocol
1472 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1474 if (developer.integer)
1475 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1476 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1480 // see if this is a duplicate connection request
1481 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1482 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1484 if (clientnum < svs.maxclients && realtime - client->connecttime < net_messagerejointimeout.value)
1486 // client is still trying to connect,
1487 // so we send a duplicate reply
1488 if (developer.integer)
1489 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1490 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1493 else if (clientnum < svs.maxclients)
1495 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1497 // client crashed and is coming back, keep their stuff intact
1498 SV_SendServerinfo(client);
1499 //host_client = client;
1500 //SV_DropClient (true);
1507 // this is a new client, find a slot
1508 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1509 if (!client->active)
1511 if (clientnum < svs.maxclients)
1513 // prepare the client struct
1514 if ((conn = NetConn_Open(mysocket, peeraddress)))
1516 // allocated connection
1517 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1518 if (developer.integer)
1519 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1520 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1521 // now set up the client
1522 SV_ConnectClient(clientnum, conn);
1523 NetConn_Heartbeat(1);
1529 if (developer.integer)
1530 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1531 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1539 if (length >= 7 && !memcmp(string, "getinfo", 7))
1541 const char *challenge = NULL;
1543 // If there was a challenge in the getinfo message
1544 if (length > 8 && string[7] == ' ')
1545 challenge = string + 8;
1547 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1549 if (developer.integer)
1550 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1551 NetConn_WriteString(mysocket, response, peeraddress);
1555 if (length >= 9 && !memcmp(string, "getstatus", 9))
1557 const char *challenge = NULL;
1559 // If there was a challenge in the getinfo message
1560 if (length > 10 && string[9] == ' ')
1561 challenge = string + 10;
1563 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1565 if (developer.integer)
1566 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1567 NetConn_WriteString(mysocket, response, peeraddress);
1572 if (!strncmp(string, "ping", 4))
1574 if (developer.integer)
1575 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1576 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1579 if (!strncmp(string, "ack", 3))
1582 // we may not have liked the packet, but it was a command packet, so
1583 // we're done processing this packet now
1586 // LordHavoc: disabled netquake control packet support in server
1590 // netquake control packets, supported for compatibility only
1591 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1596 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1600 //if (developer.integer)
1601 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
1602 if (length >= (int)strlen("QUAKE") + 1 + 1)
1604 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
1606 if (developer.integer)
1607 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
1608 SZ_Clear(&net_message);
1609 // save space for the header, filled in later
1610 MSG_WriteLong(&net_message, 0);
1611 MSG_WriteByte(&net_message, CCREP_REJECT);
1612 MSG_WriteString(&net_message, "Incompatible version.\n");
1613 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1614 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1615 SZ_Clear(&net_message);
1619 // see if this is a duplicate connection request
1620 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1621 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1623 if (clientnum < svs.maxclients)
1625 // duplicate connection request
1626 if (realtime - client->connecttime < 2.0)
1628 // client is still trying to connect,
1629 // so we send a duplicate reply
1630 if (developer.integer)
1631 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
1632 SZ_Clear(&net_message);
1633 // save space for the header, filled in later
1634 MSG_WriteLong(&net_message, 0);
1635 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1636 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
1637 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1638 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1639 SZ_Clear(&net_message);
1642 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1644 SV_SendServerinfo(client);
1645 // the old client hasn't sent us anything
1646 // in quite a while, so kick off and let
1647 // the retry take care of it...
1648 //host_client = client;
1649 //SV_DropClient (true);
1655 // this is a new client, find a slot
1656 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1657 if (!client->active)
1659 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
1661 // connect to the client
1662 // everything is allocated, just fill in the details
1663 strlcpy (conn->address, addressstring2, sizeof (conn->address));
1664 if (developer.integer)
1665 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
1666 // send back the info about the server connection
1667 SZ_Clear(&net_message);
1668 // save space for the header, filled in later
1669 MSG_WriteLong(&net_message, 0);
1670 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1671 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
1672 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1673 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1674 SZ_Clear(&net_message);
1675 // now set up the client struct
1676 SV_ConnectClient(clientnum, conn);
1677 NetConn_Heartbeat(1);
1681 //if (developer.integer)
1682 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
1683 // no room; try to let player know
1684 SZ_Clear(&net_message);
1685 // save space for the header, filled in later
1686 MSG_WriteLong(&net_message, 0);
1687 MSG_WriteByte(&net_message, CCREP_REJECT);
1688 MSG_WriteString(&net_message, "Server is full.\n");
1689 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1690 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1691 SZ_Clear(&net_message);
1698 case CCREQ_SERVER_INFO:
1699 if (developer.integer)
1700 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
1701 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
1703 if (developer.integer)
1704 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
1705 SZ_Clear(&net_message);
1706 // save space for the header, filled in later
1707 MSG_WriteLong(&net_message, 0);
1708 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
1709 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
1710 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
1711 MSG_WriteString(&net_message, hostname.string);
1712 MSG_WriteString(&net_message, sv.name);
1713 MSG_WriteByte(&net_message, net_activeconnections);
1714 MSG_WriteByte(&net_message, svs.maxclients);
1715 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1716 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1717 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1718 SZ_Clear(&net_message);
1721 case CCREQ_PLAYER_INFO:
1722 if (developer.integer)
1723 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
1726 int playerNumber, activeNumber, clientNumber;
1729 playerNumber = MSG_ReadByte();
1731 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
1732 if (client->active && ++activeNumber == playerNumber)
1734 if (clientNumber != svs.maxclients)
1736 SZ_Clear(&net_message);
1737 // save space for the header, filled in later
1738 MSG_WriteLong(&net_message, 0);
1739 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
1740 MSG_WriteByte(&net_message, playerNumber);
1741 MSG_WriteString(&net_message, client->name);
1742 MSG_WriteLong(&net_message, client->colors);
1743 MSG_WriteLong(&net_message, (int)client->edict->fields.server->frags);
1744 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
1745 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
1746 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1747 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1748 SZ_Clear(&net_message);
1752 case CCREQ_RULE_INFO:
1753 if (developer.integer)
1754 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
1760 // find the search start location
1761 prevCvarName = MSG_ReadString();
1762 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
1764 // send the response
1765 SZ_Clear(&net_message);
1766 // save space for the header, filled in later
1767 MSG_WriteLong(&net_message, 0);
1768 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
1771 MSG_WriteString(&net_message, var->name);
1772 MSG_WriteString(&net_message, var->string);
1774 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1775 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1776 SZ_Clear(&net_message);
1783 // we may not have liked the packet, but it was a valid control
1784 // packet, so we're done processing this packet now
1789 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1791 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1793 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length)) == 2)
1794 SV_ReadClientMessage();
1802 void NetConn_ServerFrame(void)
1805 lhnetaddress_t peeraddress;
1807 NetConn_UpdateServerStuff();
1808 for (i = 0;i < sv_numsockets;i++)
1809 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1810 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
1811 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1813 // never timeout loopback connections
1814 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
1816 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
1817 SV_DropClient(false);
1820 for (conn = netconn_list;conn;conn = conn->next)
1821 NetConn_ReSendMessage(conn);
1824 void NetConn_QueryMasters(void)
1828 lhnetaddress_t masteraddress;
1829 lhnetaddress_t broadcastaddress;
1832 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
1835 // 26000 is the default quake server port, servers on other ports will not
1837 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
1838 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
1840 for (i = 0;i < cl_numsockets;i++)
1844 // search LAN for Quake servers
1845 SZ_Clear(&net_message);
1846 // save space for the header, filled in later
1847 MSG_WriteLong(&net_message, 0);
1848 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
1849 MSG_WriteString(&net_message, "QUAKE");
1850 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1851 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1852 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
1853 SZ_Clear(&net_message);
1855 // search LAN for DarkPlaces servers
1856 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
1858 // build the getservers message to send to the master servers
1859 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
1862 for (masternum = 0;sv_masters[masternum].name;masternum++)
1864 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
1867 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
1872 if (!masterquerycount)
1874 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
1875 M_Update_Return_Reason("No network");
1879 void NetConn_Heartbeat(int priority)
1881 lhnetaddress_t masteraddress;
1883 lhnetsocket_t *mysocket;
1885 // if it's a state change (client connected), limit next heartbeat to no
1886 // more than 30 sec in the future
1887 if (priority == 1 && nextheartbeattime > realtime + 30.0)
1888 nextheartbeattime = realtime + 30.0;
1890 // limit heartbeatperiod to 30 to 270 second range,
1891 // lower limit is to avoid abusing master servers with excess traffic,
1892 // upper limit is to avoid timing out on the master server (which uses
1894 if (sv_heartbeatperiod.value < 30)
1895 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
1896 if (sv_heartbeatperiod.value > 270)
1897 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
1899 // make advertising optional and don't advertise singleplayer games, and
1900 // only send a heartbeat as often as the admin wants
1901 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
1903 nextheartbeattime = realtime + sv_heartbeatperiod.value;
1904 for (masternum = 0;sv_masters[masternum].name;masternum++)
1905 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
1906 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
1910 int NetConn_SendToAll(sizebuf_t *data, double blocktime)
1913 qbyte sent[MAX_SCOREBOARD];
1915 memset(sent, 0, sizeof(sent));
1917 // simultaneously wait for the first CanSendMessage and send the message,
1918 // then wait for a second CanSendMessage (verifying it was received), or
1919 // the client drops and is no longer counted
1920 // the loop aborts when either it runs out of clients to send to, or a
1922 blocktime += Sys_DoubleTime();
1926 NetConn_ClientFrame();
1927 NetConn_ServerFrame();
1928 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1930 if (host_client->netconnection)
1932 if (NetConn_CanSendMessage(host_client->netconnection))
1935 NetConn_SendReliableMessage(host_client->netconnection, data);
1938 if (!NetConn_CanSendMessage(host_client->netconnection))
1943 while (count && Sys_DoubleTime() < blocktime);
1947 static void Net_Heartbeat_f(void)
1950 NetConn_Heartbeat(2);
1952 Con_Print("No server running, can not heartbeat to master server.\n");
1955 void PrintStats(netconn_t *conn)
1957 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, conn->canSend, conn->sendSequence, conn->receiveSequence);
1960 void Net_Stats_f(void)
1963 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
1964 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
1965 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
1966 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
1967 Con_Printf("packetsSent = %i\n", packetsSent);
1968 Con_Printf("packetsReSent = %i\n", packetsReSent);
1969 Con_Printf("packetsReceived = %i\n", packetsReceived);
1970 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
1971 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
1972 Con_Print("connections =\n");
1973 for (conn = netconn_list;conn;conn = conn->next)
1977 void Net_Slist_f(void)
1979 ServerList_ResetMasks();
1980 serverlist_sortbyfield = SLIF_PING;
1981 serverlist_sortdescending = false;
1982 if (m_state != m_slist) {
1983 Con_Print("Sending requests to master servers\n");
1984 ServerList_QueryList();
1985 serverlist_consoleoutput = true;
1986 Con_Print("Listening for replies...\n");
1988 ServerList_QueryList();
1991 void NetConn_Init(void)
1994 lhnetaddress_t tempaddress;
1995 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
1996 Cmd_AddCommand("net_stats", Net_Stats_f);
1997 Cmd_AddCommand("net_slist", Net_Slist_f);
1998 Cmd_AddCommand("heartbeat", Net_Heartbeat_f);
1999 Cvar_RegisterVariable(&net_slist_queriespersecond);
2000 Cvar_RegisterVariable(&net_slist_queriesperframe);
2001 Cvar_RegisterVariable(&net_slist_timeout);
2002 Cvar_RegisterVariable(&net_slist_maxtries);
2003 Cvar_RegisterVariable(&net_messagetimeout);
2004 Cvar_RegisterVariable(&net_messagerejointimeout);
2005 Cvar_RegisterVariable(&net_connecttimeout);
2006 Cvar_RegisterVariable(&cl_netlocalping);
2007 Cvar_RegisterVariable(&cl_netpacketloss);
2008 Cvar_RegisterVariable(&hostname);
2009 Cvar_RegisterVariable(&developer_networking);
2010 Cvar_RegisterVariable(&cl_netport);
2011 Cvar_RegisterVariable(&sv_netport);
2012 Cvar_RegisterVariable(&net_address);
2013 //Cvar_RegisterVariable(&net_address_ipv6);
2014 Cvar_RegisterVariable(&sv_public);
2015 Cvar_RegisterVariable(&sv_heartbeatperiod);
2016 for (i = 0;sv_masters[i].name;i++)
2017 Cvar_RegisterVariable(&sv_masters[i]);
2018 // 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.
2019 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2021 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2023 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
2024 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2027 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2029 // 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
2030 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2032 i = atoi(com_argv[i + 1]);
2033 if (i >= 0 && i < 65536)
2035 Con_Printf("-port option used, setting port cvar to %i\n", i);
2036 Cvar_SetValueQuick(&sv_netport, i);
2039 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2043 net_message.data = net_message_buf;
2044 net_message.maxsize = sizeof(net_message_buf);
2045 net_message.cursize = 0;
2049 void NetConn_Shutdown(void)
2051 NetConn_CloseClientPorts();
2052 NetConn_CloseServerPorts();