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 )
210 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
211 for (i = 0;i < sizeof(bufferA)-1 && A[i];i++)
212 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
214 for (i = 0;i < sizeof(bufferB)-1 && B[i];i++)
215 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
218 // Same here, also using an intermediate & final return would be more appropriate
222 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
223 case SLMO_NOTCONTAIN:
224 return !*bufferB || !strstr( bufferA, bufferB );
226 return strcmp( bufferA, bufferB ) < 0;
228 return strcmp( bufferA, bufferB ) <= 0;
230 return strcmp( bufferA, bufferB ) == 0;
232 return strcmp( bufferA, bufferB ) > 0;
234 return strcmp( bufferA, bufferB ) != 0;
235 case SLMO_GREATEREQUAL:
236 return strcmp( bufferA, bufferB ) >= 0;
238 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
243 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
245 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
247 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
249 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
251 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
253 if( *mask->info.cname
254 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
257 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
260 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
263 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
266 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
271 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
275 // FIXME: change this to be more readable (...)
276 // now check whether it passes through the masks
277 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
278 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
281 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
282 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
284 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
287 if( !serverlist_viewcount ) {
288 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
291 // ok, insert it, we just need to find out where exactly:
294 // check whether to insert it as new first item
295 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
296 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
298 } // check whether to insert it as new last item
299 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
300 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
304 end = serverlist_viewcount - 1;
305 while( end > start + 1 )
307 mid = (start + end) / 2;
308 // test the item that lies in the middle between start and end
309 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
310 // the item has to be in the upper half
313 // the item has to be in the lower half
316 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
319 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
322 for( i = 0; i < serverlist_viewcount; i++ )
324 if (serverlist_viewlist[i] == entry)
326 _ServerList_ViewList_Helper_Remove(i);
332 void ServerList_RebuildViewList(void)
336 serverlist_viewcount = 0;
337 for( i = 0 ; i < serverlist_cachecount ; i++ )
338 if( serverlist_cache[i].query == SQS_QUERIED )
339 ServerList_ViewList_Insert( &serverlist_cache[i] );
342 void ServerList_ResetMasks(void)
344 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
345 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
349 static void _ServerList_Test(void)
352 for( i = 0 ; i < 1024 ; i++ ) {
353 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
354 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
355 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, 128, "Black's ServerList Test %i", i );
356 serverlist_cache[serverlist_cachecount].finished = true;
357 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
358 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
359 serverlist_cachecount++;
364 void ServerList_QueryList(void)
366 masterquerytime = realtime;
367 masterquerycount = 0;
368 masterreplycount = 0;
369 serverquerycount = 0;
370 serverreplycount = 0;
371 serverlist_cachecount = 0;
372 serverlist_viewcount = 0;
373 serverlist_consoleoutput = false;
375 //_ServerList_Test();
377 NetConn_QueryMasters();
382 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
384 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
388 if (cl_netpacketloss.integer)
389 for (i = 0;i < cl_numsockets;i++)
390 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
392 if (developer_networking.integer)
394 char addressstring[128], addressstring2[128];
395 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
398 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
399 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
400 Com_HexDumpToConsole(data, length);
403 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
408 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
412 if (cl_netpacketloss.integer)
413 for (i = 0;i < cl_numsockets;i++)
414 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
416 ret = LHNET_Write(mysocket, data, length, peeraddress);
417 if (developer_networking.integer)
419 char addressstring[128], addressstring2[128];
420 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
421 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
422 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
423 Com_HexDumpToConsole(data, length);
428 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
430 // note this does not include the trailing NULL because we add that in the parser
431 return NetConn_Write(mysocket, string, strlen(string), peeraddress);
434 int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data)
436 unsigned int packetLen;
437 unsigned int dataLen;
439 unsigned int *header;
442 if (data->cursize == 0)
444 Con_Printf ("Datagram_SendMessage: zero length message\n");
448 if (data->cursize > (int)sizeof(conn->sendMessage))
450 Con_Printf ("Datagram_SendMessage: message too big (%u > %u)\n", data->cursize, sizeof(conn->sendMessage));
454 if (conn->canSend == false)
456 Con_Printf ("SendMessage: called with canSend == false\n");
461 memcpy(conn->sendMessage, data->data, data->cursize);
462 conn->sendMessageLength = data->cursize;
464 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
466 dataLen = conn->sendMessageLength;
471 dataLen = MAX_PACKETFRAGMENT;
475 packetLen = NET_HEADERSIZE + dataLen;
477 header = (void *)sendbuffer;
478 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
479 header[1] = BigLong(conn->sendSequence);
480 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
482 conn->sendSequence++;
483 conn->canSend = false;
485 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
488 conn->lastSendTime = realtime;
490 reliableMessagesSent++;
494 static void NetConn_SendMessageNext(netconn_t *conn)
496 unsigned int packetLen;
497 unsigned int dataLen;
499 unsigned int *header;
501 if (conn->sendMessageLength && !conn->canSend && conn->sendNext)
503 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
505 dataLen = conn->sendMessageLength;
510 dataLen = MAX_PACKETFRAGMENT;
514 packetLen = NET_HEADERSIZE + dataLen;
516 header = (void *)sendbuffer;
517 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
518 header[1] = BigLong(conn->sendSequence);
519 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
521 conn->sendSequence++;
522 conn->sendNext = false;
524 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
527 conn->lastSendTime = realtime;
532 static void NetConn_ReSendMessage(netconn_t *conn)
534 unsigned int packetLen;
535 unsigned int dataLen;
537 unsigned int *header;
539 if (conn->sendMessageLength && !conn->canSend && (realtime - conn->lastSendTime) > 1.0)
541 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
543 dataLen = conn->sendMessageLength;
548 dataLen = MAX_PACKETFRAGMENT;
552 packetLen = NET_HEADERSIZE + dataLen;
554 header = (void *)sendbuffer;
555 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
556 header[1] = BigLong(conn->sendSequence - 1);
557 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
559 conn->sendNext = false;
561 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
564 conn->lastSendTime = realtime;
569 qboolean NetConn_CanSendMessage(netconn_t *conn)
571 return conn->canSend;
574 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data)
579 packetLen = NET_HEADERSIZE + data->cursize;
582 if (data->cursize == 0)
584 Con_Printf ("Datagram_SendUnreliableMessage: zero length message\n");
588 if (packetLen > (int)sizeof(sendbuffer))
590 Con_Printf ("Datagram_SendUnreliableMessage: message too big %u\n", data->cursize);
595 header = (void *)sendbuffer;
596 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
597 header[1] = BigLong(conn->unreliableSendSequence);
598 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
600 conn->unreliableSendSequence++;
602 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
606 unreliableMessagesSent++;
610 void NetConn_CloseClientPorts(void)
612 for (;cl_numsockets > 0;cl_numsockets--)
613 if (cl_sockets[cl_numsockets - 1])
614 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
617 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
619 lhnetaddress_t address;
621 char addressstring2[1024];
622 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
624 if ((s = LHNET_OpenSocket_Connectionless(&address)))
626 cl_sockets[cl_numsockets++] = s;
627 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
628 Con_Printf("Client opened a socket on address %s\n", addressstring2);
632 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
633 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
637 Con_Printf("Client unable to parse address %s\n", addressstring);
640 void NetConn_OpenClientPorts(void)
643 NetConn_CloseClientPorts();
644 port = bound(0, cl_netport.integer, 65535);
645 if (cl_netport.integer != port)
646 Cvar_SetValueQuick(&cl_netport, port);
647 Con_Printf("Client using port %i\n", port);
648 NetConn_OpenClientPort("local:2", 0);
649 NetConn_OpenClientPort(net_address.string, port);
650 //NetConn_OpenClientPort(net_address_ipv6.string, port);
653 void NetConn_CloseServerPorts(void)
655 for (;sv_numsockets > 0;sv_numsockets--)
656 if (sv_sockets[sv_numsockets - 1])
657 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
660 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
662 lhnetaddress_t address;
664 char addressstring2[1024];
665 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
667 if ((s = LHNET_OpenSocket_Connectionless(&address)))
669 sv_sockets[sv_numsockets++] = s;
670 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
671 Con_Printf("Server listening on address %s\n", addressstring2);
675 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
676 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
680 Con_Printf("Server unable to parse address %s\n", addressstring);
683 void NetConn_OpenServerPorts(int opennetports)
686 NetConn_CloseServerPorts();
687 port = bound(0, sv_netport.integer, 65535);
690 Con_Printf("Server using port %i\n", port);
691 if (sv_netport.integer != port)
692 Cvar_SetValueQuick(&sv_netport, port);
693 if (cls.state != ca_dedicated)
694 NetConn_OpenServerPort("local:1", 0);
697 NetConn_OpenServerPort(net_address.string, port);
698 //NetConn_OpenServerPort(net_address_ipv6.string, port);
700 if (sv_numsockets == 0)
701 Host_Error("NetConn_OpenServerPorts: unable to open any ports!\n");
704 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
706 int i, a = LHNETADDRESS_GetAddressType(address);
707 for (i = 0;i < cl_numsockets;i++)
708 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
709 return cl_sockets[i];
713 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
715 int i, a = LHNETADDRESS_GetAddressType(address);
716 for (i = 0;i < sv_numsockets;i++)
717 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
718 return sv_sockets[i];
722 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
725 conn = Mem_Alloc(netconn_mempool, sizeof(*conn));
726 conn->mysocket = mysocket;
727 conn->peeraddress = *peeraddress;
728 conn->canSend = true;
729 conn->lastMessageTime = realtime;
730 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
731 // reduce effectiveness of connection request floods
732 conn->timeout = realtime + net_connecttimeout.value;
733 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
734 conn->next = netconn_list;
739 void NetConn_Close(netconn_t *conn)
742 // remove connection from list
743 if (conn == netconn_list)
744 netconn_list = conn->next;
747 for (c = netconn_list;c;c = c->next)
751 c->next = conn->next;
755 // not found in list, we'll avoid crashing here...
763 static int clientport = -1;
764 static int clientport2 = -1;
765 static int hostport = -1;
766 static void NetConn_UpdateServerStuff(void)
768 if (cls.state != ca_dedicated)
770 if (clientport2 != cl_netport.integer)
772 clientport2 = cl_netport.integer;
773 if (cls.state == ca_connected)
774 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
776 if (cls.state == ca_disconnected && clientport != clientport2)
778 clientport = clientport2;
779 NetConn_CloseClientPorts();
781 if (cl_numsockets == 0)
782 NetConn_OpenClientPorts();
785 if (hostport != sv_netport.integer)
787 hostport = sv_netport.integer;
789 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
793 int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length)
797 unsigned int sequence;
802 qlength = (unsigned int)BigLong(((int *)data)[0]);
803 flags = qlength & ~NETFLAG_LENGTH_MASK;
804 qlength &= NETFLAG_LENGTH_MASK;
805 // control packets were already handled
806 if (!(flags & NETFLAG_CTL) && qlength == length)
808 sequence = BigLong(((int *)data)[1]);
812 if (flags & NETFLAG_UNRELIABLE)
814 if (sequence >= conn->unreliableReceiveSequence)
816 if (sequence > conn->unreliableReceiveSequence)
818 count = sequence - conn->unreliableReceiveSequence;
819 droppedDatagrams += count;
820 Con_DPrintf("Dropped %u datagram(s)\n", count);
822 conn->unreliableReceiveSequence = sequence + 1;
823 conn->lastMessageTime = realtime;
824 conn->timeout = realtime + net_messagetimeout.value;
825 unreliableMessagesReceived++;
828 SZ_Clear(&net_message);
829 SZ_Write(&net_message, data, length);
835 Con_DPrint("Got a stale datagram\n");
838 else if (flags & NETFLAG_ACK)
840 if (sequence == (conn->sendSequence - 1))
842 if (sequence == conn->ackSequence)
845 if (conn->ackSequence != conn->sendSequence)
846 Con_DPrint("ack sequencing error\n");
847 conn->lastMessageTime = realtime;
848 conn->timeout = realtime + net_messagetimeout.value;
849 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
850 if (conn->sendMessageLength > 0)
852 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
853 conn->sendNext = true;
854 NetConn_SendMessageNext(conn);
858 conn->sendMessageLength = 0;
859 conn->canSend = true;
863 Con_DPrint("Duplicate ACK received\n");
866 Con_DPrint("Stale ACK received\n");
869 else if (flags & NETFLAG_DATA)
871 unsigned int temppacket[2];
872 temppacket[0] = BigLong(8 | NETFLAG_ACK);
873 temppacket[1] = BigLong(sequence);
874 NetConn_Write(conn->mysocket, (qbyte *)temppacket, 8, &conn->peeraddress);
875 if (sequence == conn->receiveSequence)
877 conn->lastMessageTime = realtime;
878 conn->timeout = realtime + net_messagetimeout.value;
879 conn->receiveSequence++;
880 if( conn->receiveMessageLength + length <= sizeof( conn->receiveMessage ) ) {
881 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
882 conn->receiveMessageLength += length;
884 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
885 "Dropping the message!\n", sequence );
886 conn->receiveMessageLength = 0;
889 if (flags & NETFLAG_EOM)
891 reliableMessagesReceived++;
892 length = conn->receiveMessageLength;
893 conn->receiveMessageLength = 0;
896 SZ_Clear(&net_message);
897 SZ_Write(&net_message, conn->receiveMessage, length);
904 receivedDuplicateCount++;
912 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
914 cls.connect_trying = false;
915 M_Update_Return_Reason("");
916 // the connection request succeeded, stop current connection and set up a new connection
918 // if we're connecting to a remote server, shut down any local server
919 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
920 Host_ShutdownServer (false);
921 // allocate a net connection to keep track of things
922 cls.netcon = NetConn_Open(mysocket, peeraddress);
923 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
926 cls.demonum = -1; // not in the demo loop now
927 cls.state = ca_connected;
928 cls.signon = 0; // need all the signon messages before playing
931 int NetConn_IsLocalGame(void)
933 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
938 int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
942 char *string, addressstring2[128], cname[128], ipstring[32];
943 char stringbuf[16384];
945 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
947 // received a command string - strip off the packaging and put it
948 // into our string buffer with NULL termination
951 length = min(length, (int)sizeof(stringbuf) - 1);
952 memcpy(stringbuf, data, length);
953 stringbuf[length] = 0;
956 if (developer.integer)
958 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
959 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
960 Com_HexDumpToConsole(data, length);
963 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
965 char protocolnames[1400];
966 Protocol_Names(protocolnames, sizeof(protocolnames));
967 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
968 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
969 M_Update_Return_Reason("Got challenge response");
970 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
973 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
975 M_Update_Return_Reason("Accepted");
976 NetConn_ConnectionEstablished(mysocket, peeraddress);
979 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
981 char rejectreason[32];
982 cls.connect_trying = false;
984 length = max(length - 7, (int)sizeof(rejectreason) - 1);
985 memcpy(rejectreason, string, length);
986 rejectreason[length] = 0;
987 M_Update_Return_Reason(rejectreason);
990 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
992 serverlist_info_t *info;
997 // serverlist only uses text addresses
998 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
999 // search the cache for this server and update it
1000 for( n = 0; n < serverlist_cachecount; n++ )
1001 if( !strcmp( cname, serverlist_cache[n].info.cname ) )
1003 if( n == serverlist_cachecount ) {
1004 // LAN search doesnt require an answer from the master server so we wont
1005 // know the ping nor will it be initialized already...
1008 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1011 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1012 // store the data the engine cares about (address and ping)
1013 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, cname, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1014 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1015 serverlist_cache[serverlist_cachecount].querytime = realtime;
1016 // if not in the slist menu we should print the server to console
1017 if (serverlist_consoleoutput) {
1018 Con_Printf("querying %s\n", ipstring);
1021 ++serverlist_cachecount;
1024 info = &serverlist_cache[n].info;
1025 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1026 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1027 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1028 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1029 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1030 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1031 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1033 if (info->ping == 100000)
1036 pingtime = (int)((realtime - serverlist_cache[n].querytime) * 1000.0);
1037 pingtime = bound(0, pingtime, 9999);
1039 info->ping = pingtime;
1041 // legacy/old stuff move it to the menu ASAP
1043 // build description strings for the things users care about
1044 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);
1045 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);
1046 // if ping is especially high, display it as such
1047 if (pingtime >= 300)
1049 // orange numbers (lower block)
1050 for (i = 0;i < 5;i++)
1051 if (serverlist_cache[n].line1[i] != ' ')
1052 serverlist_cache[n].line1[i] += 128;
1054 else if (pingtime >= 200)
1056 // yellow numbers (in upper block)
1057 for (i = 0;i < 5;i++)
1058 if (serverlist_cache[n].line1[i] != ' ')
1059 serverlist_cache[n].line1[i] -= 30;
1061 if( serverlist_cache[n].query == SQS_QUERIED ) {
1062 ServerList_ViewList_Remove( &serverlist_cache[n] );
1064 // if not in the slist menu we should print the server to console (if wanted)
1065 else if( serverlist_consoleoutput )
1066 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1067 // and finally, update the view set
1068 ServerList_ViewList_Insert( &serverlist_cache[n] );
1069 serverlist_cache[n].query = SQS_QUERIED;
1073 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1075 // Extract the IP addresses
1079 if (serverlist_consoleoutput)
1080 Con_Print("received server list...\n");
1081 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1085 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], (data[5] << 8) | data[6]);
1086 if (developer.integer)
1087 Con_Printf("Requesting info from server %s\n", ipstring);
1088 // ignore the rest of the message if the serverlist is full
1089 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1091 // also ignore it if we have already queried it (other master server response)
1092 for( n = 0 ; n < serverlist_cachecount ; n++ )
1093 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1095 if( n >= serverlist_cachecount )
1099 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1100 // store the data the engine cares about (address and ping)
1101 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1102 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1103 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1105 ++serverlist_cachecount;
1108 // move on to next address in packet
1112 // begin or resume serverlist queries
1113 serverlist_querysleep = false;
1117 if (!strncmp(string, "ping", 4))
1119 if (developer.integer)
1120 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1121 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1124 if (!strncmp(string, "ack", 3))
1127 // we may not have liked the packet, but it was a command packet, so
1128 // we're done processing this packet now
1131 // netquake control packets, supported for compatibility only
1132 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1137 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1141 if (developer.integer)
1142 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1143 if (cls.connect_trying)
1145 lhnetaddress_t clientportaddress;
1146 clientportaddress = *peeraddress;
1149 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
1152 LHNETADDRESS_SetPort(&clientportaddress, port);
1154 M_Update_Return_Reason("Accepted");
1155 NetConn_ConnectionEstablished(mysocket, &clientportaddress);
1159 if (developer.integer)
1160 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1161 cls.connect_trying = false;
1162 M_Update_Return_Reason(data);
1165 case CCREP_SERVER_INFO:
1166 if (developer.integer)
1167 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1168 if (cls.state != ca_dedicated)
1170 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
1171 // string we just ignore it and keep the real address
1173 // serverlist only uses text addresses
1174 cname = UDP_AddrToString(readaddr);
1175 // search the cache for this server
1176 for (n = 0; n < hostCacheCount; n++)
1177 if (!strcmp(cname, serverlist[n].cname))
1180 if (n == hostCacheCount && hostCacheCount < SERVERLISTSIZE)
1183 memset(&serverlist[n], 0, sizeof(serverlist[n]));
1184 strlcpy (serverlist[n].name, MSG_ReadString(), sizeof (serverlist[n].name));
1185 strlcpy (serverlist[n].map, MSG_ReadString(), sizeof (serverlist[n].map));
1186 serverlist[n].users = MSG_ReadByte();
1187 serverlist[n].maxusers = MSG_ReadByte();
1189 if (c != NET_PROTOCOL_VERSION)
1191 strlcpy (serverlist[n].cname, serverlist[n].name, sizeof (serverlist[n].cname));
1192 strcpy(serverlist[n].name, "*");
1193 strlcat (serverlist[n].name, serverlist[n].cname, sizeof(serverlist[n].name));
1195 strlcpy (serverlist[n].cname, cname, sizeof (serverlist[n].cname));
1199 case CCREP_PLAYER_INFO:
1200 // we got a CCREP_PLAYER_INFO??
1201 //if (developer.integer)
1202 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1204 case CCREP_RULE_INFO:
1205 // we got a CCREP_RULE_INFO??
1206 //if (developer.integer)
1207 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1213 // we may not have liked the packet, but it was a valid control
1214 // packet, so we're done processing this packet now
1218 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)
1219 CL_ParseServerMessage();
1223 void NetConn_QueryQueueFrame(void)
1229 static double querycounter = 0;
1231 if (serverlist_querysleep)
1234 // each time querycounter reaches 1.0 issue a query
1235 querycounter += host_realframetime * net_slist_queriespersecond.value;
1236 maxqueries = (int)querycounter;
1237 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1238 querycounter -= maxqueries;
1240 if( maxqueries == 0 ) {
1244 // scan serverlist and issue queries as needed
1245 serverlist_querysleep = true;
1247 timeouttime = realtime - net_slist_timeout.value;
1248 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1250 serverlist_entry_t *entry = &serverlist_cache[ index ];
1251 if( entry->query != SQS_QUERYING )
1256 serverlist_querysleep = false;
1257 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1262 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1264 lhnetaddress_t address;
1267 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1268 for (socket = 0; socket < cl_numsockets ; socket++) {
1269 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1272 entry->querytime = realtime;
1273 entry->querycounter++;
1275 // if not in the slist menu we should print the server to console
1276 if (serverlist_consoleoutput)
1277 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1283 entry->query = SQS_TIMEDOUT;
1288 void NetConn_ClientFrame(void)
1291 lhnetaddress_t peeraddress;
1293 NetConn_UpdateServerStuff();
1294 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1296 if (cls.connect_remainingtries == 0)
1297 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1298 cls.connect_nextsendtime = realtime + 1;
1299 cls.connect_remainingtries--;
1300 if (cls.connect_remainingtries <= -10)
1302 cls.connect_trying = false;
1303 M_Update_Return_Reason("Connect: Failed");
1306 // try challenge first (newer server)
1307 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1308 // then try netquake as a fallback (old server, or netquake)
1309 SZ_Clear(&net_message);
1310 // save space for the header, filled in later
1311 MSG_WriteLong(&net_message, 0);
1312 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1313 MSG_WriteString(&net_message, "QUAKE");
1314 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1315 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1316 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1317 SZ_Clear(&net_message);
1319 for (i = 0;i < cl_numsockets;i++) {
1320 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0) {
1321 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1324 NetConn_QueryQueueFrame();
1325 if (cls.netcon && realtime > cls.netcon->timeout)
1327 Con_Print("Connection timed out\n");
1329 Host_ShutdownServer (false);
1331 for (conn = netconn_list;conn;conn = conn->next)
1332 NetConn_ReSendMessage(conn);
1335 #define MAX_CHALLENGES 128
1338 lhnetaddress_t address;
1342 challenge[MAX_CHALLENGES];
1344 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1348 for (i = 0;i < bufferlength - 1;i++)
1352 c = rand () % (127 - 33) + 33;
1353 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1359 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1361 unsigned int nb_clients = 0, i;
1364 // How many clients are there?
1365 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1366 if (svs.clients[i].active)
1369 // TODO: we should add more information for the full status string
1370 length = dpsnprintf(out_msg, out_size,
1371 "\377\377\377\377%s\x0A"
1372 "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
1373 "\\clients\\%d\\mapname\\%s\\hostname\\%s""\\protocol\\%d"
1376 fullstatus ? "statusResponse" : "infoResponse",
1377 gamename, com_modname, svs.maxclients,
1378 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1379 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1380 fullstatus ? "\n" : "");
1382 // Make sure it fits in the buffer
1391 ptr = out_msg + length;
1392 left = out_size - length;
1394 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1396 client_t *cl = &svs.clients[i];
1399 int nameind, cleanind;
1401 char cleanname [sizeof(cl->name)];
1403 // Remove all characters '"' and '\' in the player name
1408 curchar = cl->name[nameind++];
1409 if (curchar != '"' && curchar != '\\')
1411 cleanname[cleanind++] = curchar;
1412 if (cleanind == sizeof(cleanname) - 1)
1415 } while (curchar != '\0');
1417 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1419 (int)(cl->ping * 1000.0f),
1432 extern void SV_SendServerinfo (client_t *client);
1433 int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
1435 int i, ret, clientnum, best;
1439 char *s, *string, response[512], addressstring2[128], stringbuf[16384];
1443 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1445 // received a command string - strip off the packaging and put it
1446 // into our string buffer with NULL termination
1449 length = min(length, (int)sizeof(stringbuf) - 1);
1450 memcpy(stringbuf, data, length);
1451 stringbuf[length] = 0;
1454 if (developer.integer)
1456 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1457 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1458 Com_HexDumpToConsole(data, length);
1461 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1463 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1465 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1467 if (besttime > challenge[i].time)
1468 besttime = challenge[best = i].time;
1470 // if we did not find an exact match, choose the oldest and
1471 // update address and string
1472 if (i == MAX_CHALLENGES)
1475 challenge[i].address = *peeraddress;
1476 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1478 challenge[i].time = realtime;
1479 // send the challenge
1480 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1483 if (length > 8 && !memcmp(string, "connect\\", 8))
1487 if ((s = SearchInfostring(string, "challenge")))
1489 // validate the challenge
1490 for (i = 0;i < MAX_CHALLENGES;i++)
1491 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1493 if (i < MAX_CHALLENGES)
1495 // check engine protocol
1496 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1498 if (developer.integer)
1499 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1500 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1504 // see if this is a duplicate connection request
1505 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1506 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1508 if (clientnum < svs.maxclients && realtime - client->connecttime < net_messagerejointimeout.value)
1510 // client is still trying to connect,
1511 // so we send a duplicate reply
1512 if (developer.integer)
1513 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1514 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1517 else if (clientnum < svs.maxclients)
1519 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1521 // client crashed and is coming back, keep their stuff intact
1522 SV_SendServerinfo(client);
1523 //host_client = client;
1524 //SV_DropClient (true);
1531 // this is a new client, find a slot
1532 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1533 if (!client->active)
1535 if (clientnum < svs.maxclients)
1537 // prepare the client struct
1538 if ((conn = NetConn_Open(mysocket, peeraddress)))
1540 // allocated connection
1541 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1542 if (developer.integer)
1543 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1544 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1545 // now set up the client
1546 SV_ConnectClient(clientnum, conn);
1547 NetConn_Heartbeat(1);
1553 if (developer.integer)
1554 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1555 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1563 if (length >= 7 && !memcmp(string, "getinfo", 7))
1565 const char *challenge = NULL;
1567 // If there was a challenge in the getinfo message
1568 if (length > 8 && string[7] == ' ')
1569 challenge = string + 8;
1571 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1573 if (developer.integer)
1574 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1575 NetConn_WriteString(mysocket, response, peeraddress);
1579 if (length >= 9 && !memcmp(string, "getstatus", 9))
1581 const char *challenge = NULL;
1583 // If there was a challenge in the getinfo message
1584 if (length > 10 && string[9] == ' ')
1585 challenge = string + 10;
1587 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1589 if (developer.integer)
1590 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1591 NetConn_WriteString(mysocket, response, peeraddress);
1596 if (!strncmp(string, "ping", 4))
1598 if (developer.integer)
1599 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1600 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1603 if (!strncmp(string, "ack", 3))
1606 // we may not have liked the packet, but it was a command packet, so
1607 // we're done processing this packet now
1610 // LordHavoc: disabled netquake control packet support in server
1614 // netquake control packets, supported for compatibility only
1615 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1620 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1624 //if (developer.integer)
1625 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
1626 if (length >= (int)strlen("QUAKE") + 1 + 1)
1628 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
1630 if (developer.integer)
1631 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" 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_REJECT);
1636 MSG_WriteString(&net_message, "Incompatible version.\n");
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);
1643 // see if this is a duplicate connection request
1644 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1645 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1647 if (clientnum < svs.maxclients)
1649 // duplicate connection request
1650 if (realtime - client->connecttime < 2.0)
1652 // client is still trying to connect,
1653 // so we send a duplicate reply
1654 if (developer.integer)
1655 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
1656 SZ_Clear(&net_message);
1657 // save space for the header, filled in later
1658 MSG_WriteLong(&net_message, 0);
1659 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1660 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
1661 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1662 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1663 SZ_Clear(&net_message);
1666 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1668 SV_SendServerinfo(client);
1669 // the old client hasn't sent us anything
1670 // in quite a while, so kick off and let
1671 // the retry take care of it...
1672 //host_client = client;
1673 //SV_DropClient (true);
1679 // this is a new client, find a slot
1680 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1681 if (!client->active)
1683 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
1685 // connect to the client
1686 // everything is allocated, just fill in the details
1687 strlcpy (conn->address, addressstring2, sizeof (conn->address));
1688 if (developer.integer)
1689 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
1690 // send back the info about the server connection
1691 SZ_Clear(&net_message);
1692 // save space for the header, filled in later
1693 MSG_WriteLong(&net_message, 0);
1694 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1695 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
1696 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1697 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1698 SZ_Clear(&net_message);
1699 // now set up the client struct
1700 SV_ConnectClient(clientnum, conn);
1701 NetConn_Heartbeat(1);
1705 //if (developer.integer)
1706 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
1707 // no room; try to let player know
1708 SZ_Clear(&net_message);
1709 // save space for the header, filled in later
1710 MSG_WriteLong(&net_message, 0);
1711 MSG_WriteByte(&net_message, CCREP_REJECT);
1712 MSG_WriteString(&net_message, "Server is full.\n");
1713 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1714 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1715 SZ_Clear(&net_message);
1722 case CCREQ_SERVER_INFO:
1723 if (developer.integer)
1724 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
1725 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
1727 if (developer.integer)
1728 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
1729 SZ_Clear(&net_message);
1730 // save space for the header, filled in later
1731 MSG_WriteLong(&net_message, 0);
1732 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
1733 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
1734 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
1735 MSG_WriteString(&net_message, hostname.string);
1736 MSG_WriteString(&net_message, sv.name);
1737 MSG_WriteByte(&net_message, net_activeconnections);
1738 MSG_WriteByte(&net_message, svs.maxclients);
1739 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1740 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1741 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1742 SZ_Clear(&net_message);
1745 case CCREQ_PLAYER_INFO:
1746 if (developer.integer)
1747 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
1750 int playerNumber, activeNumber, clientNumber;
1753 playerNumber = MSG_ReadByte();
1755 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
1756 if (client->active && ++activeNumber == playerNumber)
1758 if (clientNumber != svs.maxclients)
1760 SZ_Clear(&net_message);
1761 // save space for the header, filled in later
1762 MSG_WriteLong(&net_message, 0);
1763 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
1764 MSG_WriteByte(&net_message, playerNumber);
1765 MSG_WriteString(&net_message, client->name);
1766 MSG_WriteLong(&net_message, client->colors);
1767 MSG_WriteLong(&net_message, (int)client->edict->fields.server->frags);
1768 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
1769 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
1770 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1771 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1772 SZ_Clear(&net_message);
1776 case CCREQ_RULE_INFO:
1777 if (developer.integer)
1778 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
1784 // find the search start location
1785 prevCvarName = MSG_ReadString();
1786 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
1788 // send the response
1789 SZ_Clear(&net_message);
1790 // save space for the header, filled in later
1791 MSG_WriteLong(&net_message, 0);
1792 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
1795 MSG_WriteString(&net_message, var->name);
1796 MSG_WriteString(&net_message, var->string);
1798 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1799 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1800 SZ_Clear(&net_message);
1807 // we may not have liked the packet, but it was a valid control
1808 // packet, so we're done processing this packet now
1813 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1815 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1817 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length)) == 2)
1818 SV_ReadClientMessage();
1826 void NetConn_ServerFrame(void)
1829 lhnetaddress_t peeraddress;
1831 NetConn_UpdateServerStuff();
1832 for (i = 0;i < sv_numsockets;i++)
1833 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1834 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
1835 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1837 // never timeout loopback connections
1838 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
1840 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
1841 SV_DropClient(false);
1844 for (conn = netconn_list;conn;conn = conn->next)
1845 NetConn_ReSendMessage(conn);
1848 void NetConn_QueryMasters(void)
1852 lhnetaddress_t masteraddress;
1853 lhnetaddress_t broadcastaddress;
1856 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
1859 // 26000 is the default quake server port, servers on other ports will not
1861 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
1862 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
1864 for (i = 0;i < cl_numsockets;i++)
1868 // search LAN for Quake servers
1869 SZ_Clear(&net_message);
1870 // save space for the header, filled in later
1871 MSG_WriteLong(&net_message, 0);
1872 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
1873 MSG_WriteString(&net_message, "QUAKE");
1874 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1875 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1876 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
1877 SZ_Clear(&net_message);
1879 // search LAN for DarkPlaces servers
1880 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
1882 // build the getservers message to send to the master servers
1883 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
1886 for (masternum = 0;sv_masters[masternum].name;masternum++)
1888 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
1891 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
1896 if (!masterquerycount)
1898 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
1899 M_Update_Return_Reason("No network");
1903 void NetConn_Heartbeat(int priority)
1905 lhnetaddress_t masteraddress;
1907 lhnetsocket_t *mysocket;
1909 // if it's a state change (client connected), limit next heartbeat to no
1910 // more than 30 sec in the future
1911 if (priority == 1 && nextheartbeattime > realtime + 30.0)
1912 nextheartbeattime = realtime + 30.0;
1914 // limit heartbeatperiod to 30 to 270 second range,
1915 // lower limit is to avoid abusing master servers with excess traffic,
1916 // upper limit is to avoid timing out on the master server (which uses
1918 if (sv_heartbeatperiod.value < 30)
1919 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
1920 if (sv_heartbeatperiod.value > 270)
1921 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
1923 // make advertising optional and don't advertise singleplayer games, and
1924 // only send a heartbeat as often as the admin wants
1925 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
1927 nextheartbeattime = realtime + sv_heartbeatperiod.value;
1928 for (masternum = 0;sv_masters[masternum].name;masternum++)
1929 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
1930 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
1934 int NetConn_SendToAll(sizebuf_t *data, double blocktime)
1937 qbyte sent[MAX_SCOREBOARD];
1939 memset(sent, 0, sizeof(sent));
1941 // simultaneously wait for the first CanSendMessage and send the message,
1942 // then wait for a second CanSendMessage (verifying it was received), or
1943 // the client drops and is no longer counted
1944 // the loop aborts when either it runs out of clients to send to, or a
1946 blocktime += Sys_DoubleTime();
1950 NetConn_ClientFrame();
1951 NetConn_ServerFrame();
1952 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1954 if (host_client->netconnection)
1956 if (NetConn_CanSendMessage(host_client->netconnection))
1959 NetConn_SendReliableMessage(host_client->netconnection, data);
1962 if (!NetConn_CanSendMessage(host_client->netconnection))
1967 while (count && Sys_DoubleTime() < blocktime);
1971 static void Net_Heartbeat_f(void)
1974 NetConn_Heartbeat(2);
1976 Con_Print("No server running, can not heartbeat to master server.\n");
1979 void PrintStats(netconn_t *conn)
1981 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, conn->canSend, conn->sendSequence, conn->receiveSequence);
1984 void Net_Stats_f(void)
1987 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
1988 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
1989 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
1990 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
1991 Con_Printf("packetsSent = %i\n", packetsSent);
1992 Con_Printf("packetsReSent = %i\n", packetsReSent);
1993 Con_Printf("packetsReceived = %i\n", packetsReceived);
1994 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
1995 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
1996 Con_Print("connections =\n");
1997 for (conn = netconn_list;conn;conn = conn->next)
2001 void Net_Slist_f(void)
2003 ServerList_ResetMasks();
2004 serverlist_sortbyfield = SLIF_PING;
2005 serverlist_sortdescending = false;
2006 if (m_state != m_slist) {
2007 Con_Print("Sending requests to master servers\n");
2008 ServerList_QueryList();
2009 serverlist_consoleoutput = true;
2010 Con_Print("Listening for replies...\n");
2012 ServerList_QueryList();
2015 void NetConn_Init(void)
2018 lhnetaddress_t tempaddress;
2019 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2020 Cmd_AddCommand("net_stats", Net_Stats_f);
2021 Cmd_AddCommand("net_slist", Net_Slist_f);
2022 Cmd_AddCommand("heartbeat", Net_Heartbeat_f);
2023 Cvar_RegisterVariable(&net_slist_queriespersecond);
2024 Cvar_RegisterVariable(&net_slist_queriesperframe);
2025 Cvar_RegisterVariable(&net_slist_timeout);
2026 Cvar_RegisterVariable(&net_slist_maxtries);
2027 Cvar_RegisterVariable(&net_messagetimeout);
2028 Cvar_RegisterVariable(&net_messagerejointimeout);
2029 Cvar_RegisterVariable(&net_connecttimeout);
2030 Cvar_RegisterVariable(&cl_netlocalping);
2031 Cvar_RegisterVariable(&cl_netpacketloss);
2032 Cvar_RegisterVariable(&hostname);
2033 Cvar_RegisterVariable(&developer_networking);
2034 Cvar_RegisterVariable(&cl_netport);
2035 Cvar_RegisterVariable(&sv_netport);
2036 Cvar_RegisterVariable(&net_address);
2037 //Cvar_RegisterVariable(&net_address_ipv6);
2038 Cvar_RegisterVariable(&sv_public);
2039 Cvar_RegisterVariable(&sv_heartbeatperiod);
2040 for (i = 0;sv_masters[i].name;i++)
2041 Cvar_RegisterVariable(&sv_masters[i]);
2042 // 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.
2043 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2045 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2047 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
2048 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2051 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2053 // 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
2054 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2056 i = atoi(com_argv[i + 1]);
2057 if (i >= 0 && i < 65536)
2059 Con_Printf("-port option used, setting port cvar to %i\n", i);
2060 Cvar_SetValueQuick(&sv_netport, i);
2063 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2067 net_message.data = net_message_buf;
2068 net_message.maxsize = sizeof(net_message_buf);
2069 net_message.cursize = 0;
2073 void NetConn_Shutdown(void)
2075 NetConn_CloseClientPorts();
2076 NetConn_CloseServerPorts();