2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2002 Mathieu Olivier
4 Copyright (C) 2003 Forest Hale
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #define QWMASTER_PORT 27000
27 #define DPMASTER_PORT 27950
29 // note this defaults on for dedicated servers, off for listen servers
30 cvar_t sv_public = {0, "sv_public", "0", "1: advertises this server on the master server (so that players can find it in the server browser); 0: allow direct queries only; -1: do not respond to direct queries; -2: do not allow anyone to connect"};
31 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
33 static cvar_t sv_masters [] =
35 {CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
36 {CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
37 {CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
38 {CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
39 {0, "sv_masterextra1", "ghdigital.com", "default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc
40 {0, "sv_masterextra2", "dpmaster.deathmask.net", "default master server 2 (admin: Willis)"}, // admin: Willis
41 {0, "sv_masterextra3", "excalibur.nvg.ntnu.no", "default master server 3 (admin: tChr)"}, // admin: tChr
45 static cvar_t sv_qwmasters [] =
47 {CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
48 {CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
49 {CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
50 {CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
51 {0, "sv_qwmasterextra1", "192.246.40.37:27000", "id Limbo (admin: id Software)"},
52 {0, "sv_qwmasterextra2", "192.246.40.37:27002", "id CTF (admin: id Software)"},
53 {0, "sv_qwmasterextra3", "192.246.40.37:27003", "id TeamFortress (admin: id Software)"},
54 {0, "sv_qwmasterextra4", "192.246.40.37:27004", "id Miscilaneous (admin: id Software)"},
55 {0, "sv_qwmasterextra5", "192.246.40.37:27006", "id Deathmatch Only (admin: id Software)"},
56 {0, "sv_qwmasterextra6", "150.254.66.120:27000", "Poland's master server. (admin: unknown)"},
57 {0, "sv_qwmasterextra7", "62.112.145.129:27000", "Ocrana master server. (admin: unknown)"},
58 {0, "sv_qwmasterextra8", "master.edome.net", "edome master server. (admin: unknown)"},
59 {0, "sv_qwmasterextra9", "qwmaster.barrysworld.com", "barrysworld master server. (admin: unknown)"},
60 {0, "sv_qwmasterextra10", "qwmaster.ocrana.de:27000", "Ocrana2 master server. (admin: unknown)"},
61 {0, "sv_qwmasterextra11", "213.221.174.165:27000", "unknown1 master server. (admin: unknown)"},
62 {0, "sv_qwmasterextra12", "195.74.0.8", "unknown2 master server. (admin: unknown)"},
63 {0, "sv_qwmasterextra13", "204.182.161.2", "unknown3 master server. (admin: unknown)"},
67 static double nextheartbeattime = 0;
69 sizebuf_t net_message;
70 static unsigned char net_message_buf[NET_MAXMESSAGE];
72 cvar_t net_messagetimeout = {0, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
73 cvar_t net_connecttimeout = {0, "net_connecttimeout","10", "after requesting a connection, the client must reply within this many seconds or be dropped (cuts down on connect floods)"};
74 cvar_t net_connectfloodblockingtimeout = {0, "net_connectfloodblockingtimeout", "5", "when a connection packet is received, it will block all future connect packets from that IP address for this many seconds (cuts down on connect floods)"};
75 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
76 cvar_t developer_networking = {0, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
78 cvar_t cl_netlocalping = {0, "cl_netlocalping","0", "lags local loopback connection by this much ping time (useful to play more fairly on your own server with people with higher pings)"};
79 static cvar_t cl_netpacketloss = {0, "cl_netpacketloss","0", "drops this percentage of packets (incoming and outgoing), useful for testing network protocol robustness (effects failing to start, sounds failing to play, etc)"};
80 static cvar_t net_slist_queriespersecond = {0, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
81 static cvar_t net_slist_queriesperframe = {0, "net_slist_queriesperframe", "4", "maximum number of server information requests to send each rendered frame (guards against low framerates causing problems)"};
82 static cvar_t net_slist_timeout = {0, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
83 static cvar_t net_slist_maxtries = {0, "net_slist_maxtries", "3", "how many times to ask the same server for information (more times gives better ping reports but takes longer)"};
85 static cvar_t gameversion = {0, "gameversion", "0", "version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible"};
87 /* statistic counters */
88 static int packetsSent = 0;
89 static int packetsReSent = 0;
90 static int packetsReceived = 0;
91 static int receivedDuplicateCount = 0;
92 static int droppedDatagrams = 0;
94 static int unreliableMessagesSent = 0;
95 static int unreliableMessagesReceived = 0;
96 static int reliableMessagesSent = 0;
97 static int reliableMessagesReceived = 0;
99 double masterquerytime = -1000;
100 int masterquerycount = 0;
101 int masterreplycount = 0;
102 int serverquerycount = 0;
103 int serverreplycount = 0;
105 // this is only false if there are still servers left to query
106 static qboolean serverlist_querysleep = true;
107 // this is pushed a second or two ahead of realtime whenever a master server
108 // reply is received, to avoid issuing queries while master replies are still
109 // flooding in (which would make a mess of the ping times)
110 static double serverlist_querywaittime = 0;
112 static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
113 static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
115 static int cl_numsockets;
116 static lhnetsocket_t *cl_sockets[16];
117 static int sv_numsockets;
118 static lhnetsocket_t *sv_sockets[16];
120 netconn_t *netconn_list = NULL;
121 mempool_t *netconn_mempool = NULL;
123 cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"};
124 cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"};
125 cvar_t net_address = {0, "net_address", "0.0.0.0", "network address to open ports on"};
126 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]", "network address to open ipv6 ports on"};
128 char net_extresponse[NET_EXTRESPONSE_MAX][1400];
129 int net_extresponse_count = 0;
130 int net_extresponse_last = 0;
132 // ServerList interface
133 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
134 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
136 serverlist_infofield_t serverlist_sortbyfield;
137 qboolean serverlist_sortdescending;
139 int serverlist_viewcount = 0;
140 serverlist_entry_t *serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
142 int serverlist_cachecount;
143 serverlist_entry_t serverlist_cache[SERVERLIST_TOTALSIZE];
145 qboolean serverlist_consoleoutput;
147 // helper function to insert a value into the viewset
148 // spare entries will be removed
149 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
152 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
153 i = serverlist_viewcount++;
155 i = SERVERLIST_VIEWLISTSIZE - 1;
158 for( ; i > index ; i-- )
159 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
161 serverlist_viewlist[index] = entry;
164 // we suppose serverlist_viewcount to be valid, ie > 0
165 static void _ServerList_ViewList_Helper_Remove( int index )
167 serverlist_viewcount--;
168 for( ; index < serverlist_viewcount ; index++ )
169 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
172 // returns true if A should be inserted before B
173 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
175 int result = 0; // > 0 if for numbers A > B and for text if A < B
177 switch( serverlist_sortbyfield ) {
179 result = A->info.ping - B->info.ping;
181 case SLIF_MAXPLAYERS:
182 result = A->info.maxplayers - B->info.maxplayers;
184 case SLIF_NUMPLAYERS:
185 result = A->info.numplayers - B->info.numplayers;
188 result = A->info.protocol - B->info.protocol;
191 result = strcmp( B->info.cname, A->info.cname );
194 result = strcmp( B->info.game, A->info.game );
197 result = strcmp( B->info.map, A->info.map );
200 result = strcmp( B->info.mod, A->info.mod );
203 result = strcmp( B->info.name, A->info.name );
206 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
210 if( serverlist_sortdescending )
214 // if the chosen sort key is identical, sort by index
215 // (makes this a stable sort, so that later replies from servers won't
216 // shuffle the servers around when they have the same ping)
220 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
222 // This should actually be done with some intermediate and end-of-function return
234 case SLMO_GREATEREQUAL:
236 case SLMO_NOTCONTAIN:
239 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
244 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
247 char bufferA[ 256 ], bufferB[ 256 ]; // should be more than enough
248 for (i = 0;i < (int)sizeof(bufferA)-1 && A[i];i++)
249 bufferA[i] = (A[i] >= 'A' && A[i] <= 'Z') ? (A[i] + 'a' - 'A') : A[i];
251 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
252 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
255 // Same here, also using an intermediate & final return would be more appropriate
259 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
260 case SLMO_NOTCONTAIN:
261 return !*bufferB || !strstr( bufferA, bufferB );
263 return strcmp( bufferA, bufferB ) < 0;
265 return strcmp( bufferA, bufferB ) <= 0;
267 return strcmp( bufferA, bufferB ) == 0;
269 return strcmp( bufferA, bufferB ) > 0;
271 return strcmp( bufferA, bufferB ) != 0;
272 case SLMO_GREATEREQUAL:
273 return strcmp( bufferA, bufferB ) >= 0;
275 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
280 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
282 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
284 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
286 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
288 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
290 if( *mask->info.cname
291 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
294 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
297 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
300 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
303 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
308 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
312 // reject incompatible servers
313 if (entry->info.gameversion != gameversion.integer)
316 // FIXME: change this to be more readable (...)
317 // now check whether it passes through the masks
318 for( start = 0 ; serverlist_andmasks[start].active && start < SERVERLIST_ANDMASKCOUNT ; start++ )
319 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
322 for( start = 0 ; serverlist_ormasks[start].active && start < SERVERLIST_ORMASKCOUNT ; start++ )
323 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
325 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
328 if( !serverlist_viewcount ) {
329 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
332 // ok, insert it, we just need to find out where exactly:
335 // check whether to insert it as new first item
336 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[0] ) ) {
337 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
339 } // check whether to insert it as new last item
340 else if( !_ServerList_Entry_Compare( entry, serverlist_viewlist[serverlist_viewcount - 1] ) ) {
341 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
345 end = serverlist_viewcount - 1;
346 while( end > start + 1 )
348 mid = (start + end) / 2;
349 // test the item that lies in the middle between start and end
350 if( _ServerList_Entry_Compare( entry, serverlist_viewlist[mid] ) )
351 // the item has to be in the upper half
354 // the item has to be in the lower half
357 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
360 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
363 for( i = 0; i < serverlist_viewcount; i++ )
365 if (serverlist_viewlist[i] == entry)
367 _ServerList_ViewList_Helper_Remove(i);
373 void ServerList_RebuildViewList(void)
377 serverlist_viewcount = 0;
378 for( i = 0 ; i < serverlist_cachecount ; i++ )
379 if( serverlist_cache[i].query == SQS_QUERIED )
380 ServerList_ViewList_Insert( &serverlist_cache[i] );
383 void ServerList_ResetMasks(void)
385 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
386 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
390 static void _ServerList_Test(void)
393 for( i = 0 ; i < 1024 ; i++ ) {
394 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
395 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
396 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
397 serverlist_cache[serverlist_cachecount].finished = true;
398 sprintf( serverlist_cache[serverlist_cachecount].line1, "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
399 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
400 serverlist_cachecount++;
405 void ServerList_QueryList(qboolean querydp, qboolean queryqw)
407 masterquerytime = realtime;
408 masterquerycount = 0;
409 masterreplycount = 0;
410 serverquerycount = 0;
411 serverreplycount = 0;
412 serverlist_cachecount = 0;
413 serverlist_viewcount = 0;
414 serverlist_consoleoutput = false;
416 //_ServerList_Test();
418 NetConn_QueryMasters(querydp, queryqw);
423 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
425 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
429 if (cl_netpacketloss.integer)
430 for (i = 0;i < cl_numsockets;i++)
431 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
433 if (developer_networking.integer)
435 char addressstring[128], addressstring2[128];
436 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
439 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
440 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
441 Com_HexDumpToConsole((unsigned char *)data, length);
444 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
449 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
453 if (cl_netpacketloss.integer)
454 for (i = 0;i < cl_numsockets;i++)
455 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss.integer)
457 ret = LHNET_Write(mysocket, data, length, peeraddress);
458 if (developer_networking.integer)
460 char addressstring[128], addressstring2[128];
461 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
462 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
463 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
464 Com_HexDumpToConsole((unsigned char *)data, length);
469 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
471 // note this does not include the trailing NULL because we add that in the parser
472 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
475 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol)
477 if (protocol == PROTOCOL_QUAKEWORLD)
480 qboolean sendreliable;
482 // note that it is ok to send empty messages to the qw server,
483 // otherwise it won't respond to us at all
485 sendreliable = false;
486 // if the remote side dropped the last reliable message, resend it
487 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
489 // if the reliable transmit buffer is empty, copy the current message out
490 if (!conn->sendMessageLength && conn->message.cursize)
492 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
493 conn->sendMessageLength = conn->message.cursize;
494 SZ_Clear(&conn->message); // clear the message buffer
495 conn->qw.reliable_sequence ^= 1;
498 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
499 *((int *)(sendbuffer + 0)) = LittleLong((unsigned int)conn->qw.outgoing_sequence | ((unsigned int)sendreliable<<31));
500 // last received unreliable packet number, and last received reliable packet number (0 or 1)
501 *((int *)(sendbuffer + 4)) = LittleLong((unsigned int)conn->qw.incoming_sequence | ((unsigned int)conn->qw.incoming_reliable_sequence<<31));
503 conn->qw.outgoing_sequence++;
504 // client sends qport in every packet
505 if (conn == cls.netcon)
507 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
509 // also update cls.qw_outgoing_sequence
510 cls.qw_outgoing_sequence = conn->qw.outgoing_sequence;
512 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
514 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
517 // add the reliable message if there is one
520 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
521 packetLen += conn->sendMessageLength;
522 conn->qw.last_reliable_sequence = conn->qw.outgoing_sequence;
524 // add the unreliable message if possible
525 if (packetLen + data->cursize <= 1400)
527 memcpy(sendbuffer + packetLen, data->data, data->cursize);
528 packetLen += data->cursize;
531 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
534 unreliableMessagesSent++;
536 // delay later packets to obey rate limit
537 conn->qw.cleartime = max(conn->qw.cleartime, realtime) + packetLen * conn->qw.rate;
543 unsigned int packetLen;
544 unsigned int dataLen;
546 unsigned int *header;
548 // if a reliable message fragment has been lost, send it again
549 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
551 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
553 dataLen = conn->sendMessageLength;
558 dataLen = MAX_PACKETFRAGMENT;
562 packetLen = NET_HEADERSIZE + dataLen;
564 header = (unsigned int *)sendbuffer;
565 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
566 header[1] = BigLong(conn->nq.sendSequence - 1);
567 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
569 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
571 conn->lastSendTime = realtime;
576 // if we have a new reliable message to send, do so
577 if (!conn->sendMessageLength && conn->message.cursize)
579 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
581 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
582 conn->message.overflowed = true;
586 if (developer_networking.integer && conn == cls.netcon)
588 Con_Print("client sending reliable message to server:\n");
589 SZ_HexDumpToConsole(&conn->message);
592 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
593 conn->sendMessageLength = conn->message.cursize;
594 SZ_Clear(&conn->message);
596 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
598 dataLen = conn->sendMessageLength;
603 dataLen = MAX_PACKETFRAGMENT;
607 packetLen = NET_HEADERSIZE + dataLen;
609 header = (unsigned int *)sendbuffer;
610 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
611 header[1] = BigLong(conn->nq.sendSequence);
612 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
614 conn->nq.sendSequence++;
616 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
618 conn->lastSendTime = realtime;
620 reliableMessagesSent++;
623 // if we have an unreliable message to send, do so
626 packetLen = NET_HEADERSIZE + data->cursize;
628 if (packetLen > (int)sizeof(sendbuffer))
630 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
634 header = (unsigned int *)sendbuffer;
635 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
636 header[1] = BigLong(conn->nq.unreliableSendSequence);
637 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
639 conn->nq.unreliableSendSequence++;
641 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
644 unreliableMessagesSent++;
650 void NetConn_CloseClientPorts(void)
652 for (;cl_numsockets > 0;cl_numsockets--)
653 if (cl_sockets[cl_numsockets - 1])
654 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
657 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
659 lhnetaddress_t address;
661 char addressstring2[1024];
662 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
664 if ((s = LHNET_OpenSocket_Connectionless(&address)))
666 cl_sockets[cl_numsockets++] = s;
667 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
668 Con_Printf("Client opened a socket on address %s\n", addressstring2);
672 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
673 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
677 Con_Printf("Client unable to parse address %s\n", addressstring);
680 void NetConn_OpenClientPorts(void)
683 NetConn_CloseClientPorts();
684 port = bound(0, cl_netport.integer, 65535);
685 if (cl_netport.integer != port)
686 Cvar_SetValueQuick(&cl_netport, port);
687 Con_Printf("Client using port %i\n", port);
688 NetConn_OpenClientPort("local:2", 0);
689 NetConn_OpenClientPort(net_address.string, port);
690 //NetConn_OpenClientPort(net_address_ipv6.string, port);
693 void NetConn_CloseServerPorts(void)
695 for (;sv_numsockets > 0;sv_numsockets--)
696 if (sv_sockets[sv_numsockets - 1])
697 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
700 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
702 lhnetaddress_t address;
705 char addressstring2[1024];
707 for (port = defaultport; port <= defaultport + 100; port++)
709 if (LHNETADDRESS_FromString(&address, addressstring, port))
711 if ((s = LHNET_OpenSocket_Connectionless(&address)))
713 sv_sockets[sv_numsockets++] = s;
714 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
715 Con_Printf("Server listening on address %s\n", addressstring2);
720 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
721 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
726 Con_Printf("Server unable to parse address %s\n", addressstring);
727 // if it cant parse one address, it wont be able to parse another for sure
733 void NetConn_OpenServerPorts(int opennetports)
736 NetConn_CloseServerPorts();
737 NetConn_UpdateSockets();
738 port = bound(0, sv_netport.integer, 65535);
741 Con_Printf("Server using port %i\n", port);
742 if (sv_netport.integer != port)
743 Cvar_SetValueQuick(&sv_netport, port);
744 if (cls.state != ca_dedicated)
745 NetConn_OpenServerPort("local:1", 0);
748 NetConn_OpenServerPort(net_address.string, port);
749 //NetConn_OpenServerPort(net_address_ipv6.string, port);
751 if (sv_numsockets == 0)
752 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
755 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
757 int i, a = LHNETADDRESS_GetAddressType(address);
758 for (i = 0;i < cl_numsockets;i++)
759 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
760 return cl_sockets[i];
764 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
766 int i, a = LHNETADDRESS_GetAddressType(address);
767 for (i = 0;i < sv_numsockets;i++)
768 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
769 return sv_sockets[i];
773 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
776 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
777 conn->mysocket = mysocket;
778 conn->peeraddress = *peeraddress;
779 conn->lastMessageTime = realtime;
780 conn->message.data = conn->messagedata;
781 conn->message.maxsize = sizeof(conn->messagedata);
782 conn->message.cursize = 0;
783 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
784 // reduce effectiveness of connection request floods
785 conn->timeout = realtime + net_connecttimeout.value;
786 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
787 conn->next = netconn_list;
792 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress);
793 void NetConn_Close(netconn_t *conn)
796 // remove connection from list
798 // allow the client to reconnect immediately
799 NetConn_ClearConnectFlood(&(conn->peeraddress));
801 if (conn == netconn_list)
802 netconn_list = conn->next;
805 for (c = netconn_list;c;c = c->next)
809 c->next = conn->next;
813 // not found in list, we'll avoid crashing here...
821 static int clientport = -1;
822 static int clientport2 = -1;
823 static int hostport = -1;
824 void NetConn_UpdateSockets(void)
826 if (cls.state != ca_dedicated)
828 if (clientport2 != cl_netport.integer)
830 clientport2 = cl_netport.integer;
831 if (cls.state == ca_connected)
832 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
834 if (cls.state == ca_disconnected && clientport != clientport2)
836 clientport = clientport2;
837 NetConn_CloseClientPorts();
839 if (cl_numsockets == 0)
840 NetConn_OpenClientPorts();
843 if (hostport != sv_netport.integer)
845 hostport = sv_netport.integer;
847 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
851 static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol, double newtimeout)
856 // TODO: add netgraph stuff rather than just packetloss counting...
858 if (protocol == PROTOCOL_QUAKEWORLD)
860 int sequence, sequence_ack;
861 int reliable_ack, reliable_message;
865 sequence = LittleLong(*((int *)(data + 0)));
866 sequence_ack = LittleLong(*((int *)(data + 4)));
870 if (conn != cls.netcon)
875 // TODO: use qport to identify that this client really is who they say they are? (and elsewhere in the code to identify the connection without a port match?)
876 qport = LittleShort(*((int *)(data + 8)));
882 reliable_message = (sequence >> 31) & 1;
883 reliable_ack = (sequence_ack >> 31) & 1;
884 sequence &= ~(1<<31);
885 sequence_ack &= ~(1<<31);
886 if (sequence <= conn->qw.incoming_sequence)
888 //Con_DPrint("Got a stale datagram\n");
891 count = sequence - (conn->qw.incoming_sequence + 1);
894 droppedDatagrams += count;
895 //Con_DPrintf("Dropped %u datagram(s)\n", count);
898 conn->packetlost[conn->packetlostcounter] = true;
899 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
902 conn->packetlost[conn->packetlostcounter] = false;
903 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
904 if (reliable_ack == conn->qw.reliable_sequence)
906 // received, now we will be able to send another reliable message
907 conn->sendMessageLength = 0;
908 reliableMessagesReceived++;
910 conn->qw.incoming_sequence = sequence;
911 if (conn == cls.netcon)
912 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
913 conn->qw.incoming_acknowledged = sequence_ack;
914 conn->qw.incoming_reliable_acknowledged = reliable_ack;
915 if (reliable_message)
916 conn->qw.incoming_reliable_sequence ^= 1;
917 conn->lastMessageTime = realtime;
918 conn->timeout = realtime + newtimeout;
919 unreliableMessagesReceived++;
920 SZ_Clear(&net_message);
921 SZ_Write(&net_message, data, length);
929 unsigned int sequence;
932 qlength = (unsigned int)BigLong(((int *)data)[0]);
933 flags = qlength & ~NETFLAG_LENGTH_MASK;
934 qlength &= NETFLAG_LENGTH_MASK;
935 // control packets were already handled
936 if (!(flags & NETFLAG_CTL) && qlength == length)
938 sequence = BigLong(((int *)data)[1]);
942 if (flags & NETFLAG_UNRELIABLE)
944 if (sequence >= conn->nq.unreliableReceiveSequence)
946 if (sequence > conn->nq.unreliableReceiveSequence)
948 count = sequence - conn->nq.unreliableReceiveSequence;
949 droppedDatagrams += count;
950 //Con_DPrintf("Dropped %u datagram(s)\n", count);
953 conn->packetlost[conn->packetlostcounter] = true;
954 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
957 conn->packetlost[conn->packetlostcounter] = false;
958 conn->packetlostcounter = (conn->packetlostcounter + 1) % 100;
959 conn->nq.unreliableReceiveSequence = sequence + 1;
960 conn->lastMessageTime = realtime;
961 conn->timeout = realtime + newtimeout;
962 unreliableMessagesReceived++;
965 SZ_Clear(&net_message);
966 SZ_Write(&net_message, data, length);
972 // Con_DPrint("Got a stale datagram\n");
975 else if (flags & NETFLAG_ACK)
977 if (sequence == (conn->nq.sendSequence - 1))
979 if (sequence == conn->nq.ackSequence)
981 conn->nq.ackSequence++;
982 if (conn->nq.ackSequence != conn->nq.sendSequence)
983 Con_DPrint("ack sequencing error\n");
984 conn->lastMessageTime = realtime;
985 conn->timeout = realtime + newtimeout;
986 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
988 unsigned int packetLen;
989 unsigned int dataLen;
991 unsigned int *header;
993 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
994 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
996 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
998 dataLen = conn->sendMessageLength;
1003 dataLen = MAX_PACKETFRAGMENT;
1007 packetLen = NET_HEADERSIZE + dataLen;
1009 header = (unsigned int *)sendbuffer;
1010 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
1011 header[1] = BigLong(conn->nq.sendSequence);
1012 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1014 conn->nq.sendSequence++;
1016 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen)
1018 conn->lastSendTime = realtime;
1023 conn->sendMessageLength = 0;
1026 // Con_DPrint("Duplicate ACK received\n");
1029 // Con_DPrint("Stale ACK received\n");
1032 else if (flags & NETFLAG_DATA)
1034 unsigned int temppacket[2];
1035 temppacket[0] = BigLong(8 | NETFLAG_ACK);
1036 temppacket[1] = BigLong(sequence);
1037 NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress);
1038 if (sequence == conn->nq.receiveSequence)
1040 conn->lastMessageTime = realtime;
1041 conn->timeout = realtime + newtimeout;
1042 conn->nq.receiveSequence++;
1043 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1044 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1045 conn->receiveMessageLength += length;
1047 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1048 "Dropping the message!\n", sequence );
1049 conn->receiveMessageLength = 0;
1052 if (flags & NETFLAG_EOM)
1054 reliableMessagesReceived++;
1055 length = conn->receiveMessageLength;
1056 conn->receiveMessageLength = 0;
1059 SZ_Clear(&net_message);
1060 SZ_Write(&net_message, conn->receiveMessage, length);
1067 receivedDuplicateCount++;
1075 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1077 cls.connect_trying = false;
1078 M_Update_Return_Reason("");
1079 // the connection request succeeded, stop current connection and set up a new connection
1081 // if we're connecting to a remote server, shut down any local server
1082 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1083 Host_ShutdownServer ();
1084 // allocate a net connection to keep track of things
1085 cls.netcon = NetConn_Open(mysocket, peeraddress);
1086 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1087 key_dest = key_game;
1089 cls.demonum = -1; // not in the demo loop now
1090 cls.state = ca_connected;
1091 cls.signon = 0; // need all the signon messages before playing
1092 cls.protocol = initialprotocol;
1093 // reset move sequence numbering on this new connection
1094 cls.movesequence = 0;
1095 cls.servermovesequence = 0;
1096 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1097 Cmd_ForwardStringToServer("new");
1098 if (cls.protocol == PROTOCOL_QUAKE)
1100 // write a keepalive (clc_nop) as it seems to greatly improve the
1101 // chances of connecting to a netquake server
1103 unsigned char buf[4];
1104 memset(&msg, 0, sizeof(msg));
1106 msg.maxsize = sizeof(buf);
1107 MSG_WriteChar(&msg, clc_nop);
1108 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol);
1112 int NetConn_IsLocalGame(void)
1114 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1119 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1123 // search the cache for this server and update it
1124 for (n = 0;n < serverlist_cachecount;n++)
1125 if (!strcmp(addressstring, serverlist_cache[n].info.cname))
1127 if (n == serverlist_cachecount)
1129 // LAN search doesnt require an answer from the master server so we wont
1130 // know the ping nor will it be initialized already...
1133 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1136 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1137 // store the data the engine cares about (address and ping)
1138 strlcpy(serverlist_cache[serverlist_cachecount].info.cname, addressstring, sizeof(serverlist_cache[serverlist_cachecount].info.cname));
1139 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1140 serverlist_cache[serverlist_cachecount].querytime = realtime;
1141 // if not in the slist menu we should print the server to console
1142 if (serverlist_consoleoutput)
1143 Con_Printf("querying %s\n", addressstring);
1144 ++serverlist_cachecount;
1146 // if this is the first reply from this server, count it as having replied
1147 if (serverlist_cache[n].info.ping == 100000)
1149 pingtime = (int)((realtime - serverlist_cache[n].querytime) * 1000.0 + 0.5);
1150 pingtime = bound(0, pingtime, 9999);
1152 serverlist_cache[n].info.ping = min(serverlist_cache[n].info.ping, pingtime);
1153 // other server info is updated by the caller
1157 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1159 serverlist_info_t *info = &serverlist_cache[n].info;
1160 // update description strings for engine menu and console output
1161 dpsnprintf(serverlist_cache[n].line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", info->ping >= 300 ? '1' : (info->ping >= 200 ? '3' : '7'), (int)info->ping, ((info->numplayers > 0 && info->numplayers < info->maxplayers) ? (info->numplayers >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1162 dpsnprintf(serverlist_cache[n].line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game, (info->gameversion != gameversion.integer) ? '1' : '4', info->mod, info->map);
1163 if (serverlist_cache[n].query == SQS_QUERIED)
1164 ServerList_ViewList_Remove(&serverlist_cache[n]);
1165 // if not in the slist menu we should print the server to console (if wanted)
1166 else if( serverlist_consoleoutput )
1167 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1168 // and finally, update the view set
1169 ServerList_ViewList_Insert( &serverlist_cache[n] );
1170 serverlist_cache[n].query = SQS_QUERIED;
1173 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1175 qboolean fromserver;
1176 int ret, c, control;
1178 char *string, addressstring2[128], ipstring[32];
1179 char stringbuf[16384];
1181 // quakeworld ingame packet
1182 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1184 // convert the address to a string incase we need it
1185 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1187 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1189 // received a command string - strip off the packaging and put it
1190 // into our string buffer with NULL termination
1193 length = min(length, (int)sizeof(stringbuf) - 1);
1194 memcpy(stringbuf, data, length);
1195 stringbuf[length] = 0;
1198 if (developer_networking.integer)
1200 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1201 Com_HexDumpToConsole(data, length);
1204 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1206 // darkplaces or quake3
1207 char protocolnames[1400];
1208 Protocol_Names(protocolnames, sizeof(protocolnames));
1209 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1210 M_Update_Return_Reason("Got challenge response");
1211 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1212 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1213 // TODO: add userinfo stuff here instead of using NQ commands?
1214 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\protocols\\%s\\challenge\\%s", protocolnames, string + 10), peeraddress);
1217 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1219 // darkplaces or quake3
1220 M_Update_Return_Reason("Accepted");
1221 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1224 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1226 char rejectreason[32];
1227 cls.connect_trying = false;
1229 length = max(length - 7, (int)sizeof(rejectreason) - 1);
1230 memcpy(rejectreason, string, length);
1231 rejectreason[length] = 0;
1232 M_Update_Return_Reason(rejectreason);
1235 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
1237 serverlist_info_t *info;
1241 // search the cache for this server and update it
1242 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1246 info = &serverlist_cache[n].info;
1247 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(info->game, s, sizeof (info->game));else info->game[0] = 0;
1248 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1249 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1250 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1251 if ((s = SearchInfostring(string, "protocol" )) != NULL) info->protocol = atoi(s);else info->protocol = -1;
1252 if ((s = SearchInfostring(string, "clients" )) != NULL) info->numplayers = atoi(s);else info->numplayers = 0;
1253 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1254 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1256 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1260 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1262 // Extract the IP addresses
1266 if (serverlist_consoleoutput)
1267 Con_Print("received DarkPlaces server list...\n");
1268 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
1272 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], data[5] * 256 + data[6]);
1273 if (serverlist_consoleoutput && developer_networking.integer)
1274 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1275 // ignore the rest of the message if the serverlist is full
1276 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1278 // also ignore it if we have already queried it (other master server response)
1279 for( n = 0 ; n < serverlist_cachecount ; n++ )
1280 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1282 if( n >= serverlist_cachecount )
1286 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1287 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_DARKPLACES7;
1288 // store the data the engine cares about (address and ping)
1289 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1290 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1291 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1293 ++serverlist_cachecount;
1296 // move on to next address in packet
1300 // begin or resume serverlist queries
1301 serverlist_querysleep = false;
1302 serverlist_querywaittime = realtime + 3;
1305 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
1307 // Extract the IP addresses
1311 if (serverlist_consoleoutput)
1312 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
1313 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
1317 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
1318 if (serverlist_consoleoutput && developer_networking.integer)
1319 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
1320 // ignore the rest of the message if the serverlist is full
1321 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1323 // also ignore it if we have already queried it (other master server response)
1324 for( n = 0 ; n < serverlist_cachecount ; n++ )
1325 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1327 if( n >= serverlist_cachecount )
1331 memset(&serverlist_cache[serverlist_cachecount], 0, sizeof(serverlist_cache[serverlist_cachecount]));
1332 serverlist_cache[serverlist_cachecount].protocol = PROTOCOL_QUAKEWORLD;
1333 // store the data the engine cares about (address and ping)
1334 strlcpy (serverlist_cache[serverlist_cachecount].info.cname, ipstring, sizeof (serverlist_cache[serverlist_cachecount].info.cname));
1335 serverlist_cache[serverlist_cachecount].info.ping = 100000;
1336 serverlist_cache[serverlist_cachecount].query = SQS_QUERYING;
1338 ++serverlist_cachecount;
1341 // move on to next address in packet
1345 // begin or resume serverlist queries
1346 serverlist_querysleep = false;
1347 serverlist_querywaittime = realtime + 3;
1350 if (!strncmp(string, "extResponse ", 12))
1352 ++net_extresponse_count;
1353 if(net_extresponse_count > NET_EXTRESPONSE_MAX)
1354 net_extresponse_count = NET_EXTRESPONSE_MAX;
1355 net_extresponse_last = (net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
1356 dpsnprintf(net_extresponse[net_extresponse_last], sizeof(net_extresponse[net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
1359 if (!strncmp(string, "ping", 4))
1361 if (developer.integer >= 10)
1362 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
1363 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1366 if (!strncmp(string, "ack", 3))
1368 // QuakeWorld compatibility
1369 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
1371 // challenge message
1372 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
1373 M_Update_Return_Reason("Got QuakeWorld challenge response");
1374 cls.qw_qport = qport.integer;
1375 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1376 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1377 NetConn_WriteString(mysocket, va("\377\377\377\377connect %i %i %i \"%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo), peeraddress);
1380 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
1383 M_Update_Return_Reason("QuakeWorld Accepted");
1384 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
1387 if (length > 2 && !memcmp(string, "n\\", 2))
1389 serverlist_info_t *info;
1393 if (serverlist_consoleoutput && developer_networking.integer >= 2)
1394 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
1397 // search the cache for this server and update it
1398 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1402 info = &serverlist_cache[n].info;
1403 strlcpy(info->game, "QuakeWorld", sizeof(info->game));;
1404 if ((s = SearchInfostring(string, "*gamedir" )) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
1405 if ((s = SearchInfostring(string, "map" )) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
1406 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
1408 info->numplayers = 0; // updated below
1409 if ((s = SearchInfostring(string, "maxclients" )) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
1410 if ((s = SearchInfostring(string, "gameversion" )) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
1412 // count active players on server
1413 // (we could gather more info, but we're just after the number)
1414 s = strchr(string, '\n');
1418 while (s < string + length)
1420 for (;s < string + length && *s != '\n';s++)
1422 if (s >= string + length)
1429 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1433 if (string[0] == 'n')
1436 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
1438 // we may not have liked the packet, but it was a command packet, so
1439 // we're done processing this packet now
1442 // quakeworld ingame packet
1443 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
1446 CL_ParseServerMessage();
1449 // netquake control packets, supported for compatibility only
1450 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1453 serverlist_info_t *info;
1457 SZ_Clear(&net_message);
1458 SZ_Write(&net_message, data, length);
1464 if (developer.integer >= 10)
1465 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
1466 if (cls.connect_trying)
1468 lhnetaddress_t clientportaddress;
1469 clientportaddress = *peeraddress;
1470 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong());
1471 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1472 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1473 M_Update_Return_Reason("Accepted");
1474 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
1478 if (developer.integer >= 10)
1479 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
1480 cls.connect_trying = false;
1481 M_Update_Return_Reason((char *)MSG_ReadString());
1483 case CCREP_SERVER_INFO:
1484 if (developer.integer >= 10)
1485 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
1486 // LordHavoc: because the quake server may report weird addresses
1487 // we just ignore it and keep the real address
1489 // search the cache for this server and update it
1490 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1494 info = &serverlist_cache[n].info;
1495 strlcpy(info->game, "Quake", sizeof(info->game));
1496 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
1497 strlcpy(info->name, MSG_ReadString(), sizeof(info->name));
1498 strlcpy(info->map , MSG_ReadString(), sizeof(info->map));
1499 info->numplayers = MSG_ReadByte();
1500 info->maxplayers = MSG_ReadByte();
1501 info->protocol = MSG_ReadByte();
1503 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
1506 case CCREP_PLAYER_INFO:
1507 // we got a CCREP_PLAYER_INFO??
1508 //if (developer.integer >= 10)
1509 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
1511 case CCREP_RULE_INFO:
1512 // we got a CCREP_RULE_INFO??
1513 //if (developer.integer >= 10)
1514 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
1519 SZ_Clear(&net_message);
1520 // we may not have liked the packet, but it was a valid control
1521 // packet, so we're done processing this packet now
1525 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
1526 CL_ParseServerMessage();
1530 void NetConn_QueryQueueFrame(void)
1536 static double querycounter = 0;
1538 if (serverlist_querysleep)
1541 // apply a cool down time after master server replies,
1542 // to avoid messing up the ping times on the servers
1543 if (serverlist_querywaittime > realtime)
1546 // each time querycounter reaches 1.0 issue a query
1547 querycounter += cl.realframetime * net_slist_queriespersecond.value;
1548 maxqueries = (int)querycounter;
1549 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
1550 querycounter -= maxqueries;
1552 if( maxqueries == 0 ) {
1556 // scan serverlist and issue queries as needed
1557 serverlist_querysleep = true;
1559 timeouttime = realtime - net_slist_timeout.value;
1560 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
1562 serverlist_entry_t *entry = &serverlist_cache[ index ];
1563 if( entry->query != SQS_QUERYING )
1568 serverlist_querysleep = false;
1569 if( entry->querycounter != 0 && entry->querytime > timeouttime )
1574 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
1576 lhnetaddress_t address;
1579 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
1580 if (entry->protocol == PROTOCOL_QUAKEWORLD)
1582 for (socket = 0; socket < cl_numsockets ; socket++)
1583 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
1587 for (socket = 0; socket < cl_numsockets ; socket++)
1588 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getinfo", &address);
1591 entry->querytime = realtime;
1592 entry->querycounter++;
1594 // if not in the slist menu we should print the server to console
1595 if (serverlist_consoleoutput)
1596 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
1602 entry->query = SQS_TIMEDOUT;
1607 void NetConn_ClientFrame(void)
1610 lhnetaddress_t peeraddress;
1611 NetConn_UpdateSockets();
1612 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
1614 if (cls.connect_remainingtries == 0)
1615 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
1616 cls.connect_nextsendtime = realtime + 1;
1617 cls.connect_remainingtries--;
1618 if (cls.connect_remainingtries <= -10)
1620 cls.connect_trying = false;
1621 M_Update_Return_Reason("Connect: Failed");
1624 // try challenge first (newer DP server or QW)
1625 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
1626 // then try netquake as a fallback (old server, or netquake)
1627 SZ_Clear(&net_message);
1628 // save space for the header, filled in later
1629 MSG_WriteLong(&net_message, 0);
1630 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1631 MSG_WriteString(&net_message, "QUAKE");
1632 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1633 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1634 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
1635 SZ_Clear(&net_message);
1637 for (i = 0;i < cl_numsockets;i++)
1638 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1639 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
1640 NetConn_QueryQueueFrame();
1641 if (cls.netcon && realtime > cls.netcon->timeout)
1643 Con_Print("Connection timed out\n");
1645 Host_ShutdownServer ();
1649 #define MAX_CHALLENGES 128
1652 lhnetaddress_t address;
1656 challenge[MAX_CHALLENGES];
1658 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1662 for (i = 0;i < bufferlength - 1;i++)
1666 c = rand () % (127 - 33) + 33;
1667 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1673 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
1675 unsigned int nb_clients = 0, i;
1678 // How many clients are there?
1679 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1680 if (svs.clients[i].active)
1683 // TODO: we should add more information for the full status string
1684 length = dpsnprintf(out_msg, out_size,
1685 "\377\377\377\377%s\x0A"
1686 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
1687 "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
1690 fullstatus ? "statusResponse" : "infoResponse",
1691 gamename, com_modname, gameversion.integer, svs.maxclients,
1692 nb_clients, sv.name, hostname.string, NET_PROTOCOL_VERSION,
1693 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
1694 fullstatus ? "\n" : "");
1696 // Make sure it fits in the buffer
1705 ptr = out_msg + length;
1706 left = (int)out_size - length;
1708 for (i = 0;i < (unsigned int)svs.maxclients;i++)
1710 client_t *cl = &svs.clients[i];
1713 int nameind, cleanind, pingvalue;
1715 char cleanname [sizeof(cl->name)];
1717 // Remove all characters '"' and '\' in the player name
1722 curchar = cl->name[nameind++];
1723 if (curchar != '"' && curchar != '\\')
1725 cleanname[cleanind++] = curchar;
1726 if (cleanind == sizeof(cleanname) - 1)
1729 } while (curchar != '\0');
1731 pingvalue = (int)(cl->ping * 1000.0f);
1732 if(cl->netconnection)
1733 pingvalue = bound(1, pingvalue, 9999);
1736 length = dpsnprintf(ptr, left, "%d %d \"%s\"\n",
1751 static qboolean NetConn_PreventConnectFlood(lhnetaddress_t *peeraddress)
1753 int floodslotnum, bestfloodslotnum;
1754 double bestfloodtime;
1755 lhnetaddress_t noportpeeraddress;
1756 // see if this is a connect flood
1757 noportpeeraddress = *peeraddress;
1758 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
1759 bestfloodslotnum = 0;
1760 bestfloodtime = sv.connectfloodaddresses[bestfloodslotnum].lasttime;
1761 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
1763 if (bestfloodtime >= sv.connectfloodaddresses[floodslotnum].lasttime)
1765 bestfloodtime = sv.connectfloodaddresses[floodslotnum].lasttime;
1766 bestfloodslotnum = floodslotnum;
1768 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
1770 // this address matches an ongoing flood address
1771 if (realtime < sv.connectfloodaddresses[floodslotnum].lasttime + net_connectfloodblockingtimeout.value)
1773 // renew the ban on this address so it does not expire
1774 // until the flood has subsided
1775 sv.connectfloodaddresses[floodslotnum].lasttime = realtime;
1776 //Con_Printf("Flood detected!\n");
1779 // the flood appears to have subsided, so allow this
1780 bestfloodslotnum = floodslotnum; // reuse the same slot
1784 // begin a new timeout on this address
1785 sv.connectfloodaddresses[bestfloodslotnum].address = noportpeeraddress;
1786 sv.connectfloodaddresses[bestfloodslotnum].lasttime = realtime;
1787 //Con_Printf("Flood detection initiated!\n");
1791 void NetConn_ClearConnectFlood(lhnetaddress_t *peeraddress)
1794 lhnetaddress_t noportpeeraddress;
1795 // see if this is a connect flood
1796 noportpeeraddress = *peeraddress;
1797 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
1798 for (floodslotnum = 0;floodslotnum < MAX_CONNECTFLOODADDRESSES;floodslotnum++)
1800 if (sv.connectfloodaddresses[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &sv.connectfloodaddresses[floodslotnum].address) == 0)
1802 // this address matches an ongoing flood address
1804 sv.connectfloodaddresses[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
1805 sv.connectfloodaddresses[floodslotnum].lasttime = 0;
1806 //Con_Printf("Flood cleared!\n");
1811 extern void SV_SendServerinfo (client_t *client);
1812 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1814 int i, ret, clientnum, best;
1817 char *s, *string, response[1400], addressstring2[128], stringbuf[16384];
1822 // convert the address to a string incase we need it
1823 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1825 // see if we can identify the sender as a local player
1826 // (this is necessary for rcon to send a reliable reply if the client is
1827 // actually on the server, not sending remotely)
1828 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1829 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1831 if (i == svs.maxclients)
1834 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1836 // received a command string - strip off the packaging and put it
1837 // into our string buffer with NULL termination
1840 length = min(length, (int)sizeof(stringbuf) - 1);
1841 memcpy(stringbuf, data, length);
1842 stringbuf[length] = 0;
1845 if (developer.integer >= 10)
1847 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1848 Com_HexDumpToConsole(data, length);
1851 if (length >= 12 && !memcmp(string, "getchallenge", 12) && sv_public.integer > -2)
1853 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1855 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1857 if (besttime > challenge[i].time)
1858 besttime = challenge[best = i].time;
1860 // if we did not find an exact match, choose the oldest and
1861 // update address and string
1862 if (i == MAX_CHALLENGES)
1865 challenge[i].address = *peeraddress;
1866 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1868 challenge[i].time = realtime;
1869 // send the challenge
1870 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1873 if (length > 8 && !memcmp(string, "connect\\", 8) && sv_public.integer > -2)
1878 if (!(s = SearchInfostring(string, "challenge")))
1880 // validate the challenge
1881 for (i = 0;i < MAX_CHALLENGES;i++)
1882 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1884 // if the challenge is not recognized, drop the packet
1885 if (i == MAX_CHALLENGES)
1888 // check engine protocol
1889 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1891 if (developer.integer >= 10)
1892 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1893 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1897 // see if this is a duplicate connection request or a disconnected
1898 // client who is rejoining to the same client slot
1899 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1901 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1903 // this is a known client...
1904 if (client->spawned)
1906 // client crashed and is coming back,
1907 // keep their stuff intact
1908 if (developer.integer >= 10)
1909 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
1910 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1912 SV_SendServerinfo(client);
1917 // client is still trying to connect,
1918 // so we send a duplicate reply
1919 if (developer.integer >= 10)
1920 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1921 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1927 if (NetConn_PreventConnectFlood(peeraddress))
1930 // find an empty client slot for this new client
1931 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1934 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
1936 // allocated connection
1937 if (developer.integer >= 10)
1938 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1939 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1940 // now set up the client
1942 SV_ConnectClient(clientnum, conn);
1944 NetConn_Heartbeat(1);
1949 // no empty slots found - server is full
1950 if (developer.integer >= 10)
1951 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1952 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1956 if (length >= 7 && !memcmp(string, "getinfo", 7) && sv_public.integer > -1)
1958 const char *challenge = NULL;
1960 // If there was a challenge in the getinfo message
1961 if (length > 8 && string[7] == ' ')
1962 challenge = string + 8;
1964 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
1966 if (developer.integer >= 10)
1967 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1968 NetConn_WriteString(mysocket, response, peeraddress);
1972 if (length >= 9 && !memcmp(string, "getstatus", 9) && sv_public.integer > -1)
1974 const char *challenge = NULL;
1976 // If there was a challenge in the getinfo message
1977 if (length > 10 && string[9] == ' ')
1978 challenge = string + 10;
1980 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
1982 if (developer.integer >= 10)
1983 Con_Printf("Sending reply to client %s - %s\n", addressstring2, response);
1984 NetConn_WriteString(mysocket, response, peeraddress);
1988 if (length >= 5 && !memcmp(string, "rcon ", 5))
1991 char *s = string + 5;
1993 for (i = 0;*s > ' ';s++)
1994 if (i < (int)sizeof(password) - 1)
1997 if (password[0] > ' ' && !strcmp(rcon_password.string, password))
1999 // looks like a legitimate rcon command with the correct password
2000 Con_Printf("server received rcon command from %s:\n%s\n", host_client ? host_client->name : addressstring2, s);
2001 rcon_redirect = true;
2002 rcon_redirect_bufferpos = 0;
2003 Cmd_ExecuteString(s, src_command);
2004 rcon_redirect_buffer[rcon_redirect_bufferpos] = 0;
2005 rcon_redirect = false;
2006 // print resulting text to client
2007 // if client is playing, send a reliable reply instead of
2011 // if the netconnection is loop, then this is the
2012 // local player on a listen mode server, and it would
2013 // result in duplicate printing to the console
2014 // (not that the local player should be using rcon
2015 // when they have the console)
2016 if (host_client->netconnection && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2017 SV_ClientPrintf("%s", rcon_redirect_buffer);
2022 dpsnprintf(response, sizeof(response), "\377\377\377\377n%s", rcon_redirect_buffer);
2023 NetConn_WriteString(mysocket, response, peeraddress);
2028 if (!strncmp(string, "ping", 4))
2030 if (developer.integer >= 10)
2031 Con_Printf("Received ping from %s, sending ack\n", addressstring2);
2032 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
2035 if (!strncmp(string, "ack", 3))
2037 // we may not have liked the packet, but it was a command packet, so
2038 // we're done processing this packet now
2041 // netquake control packets, supported for compatibility only, and only
2042 // when running game protocols that are normally served via this connection
2044 // (this protects more modern protocols against being used for
2045 // Quake packet flood Denial Of Service attacks)
2046 if (length >= 5 && (i = BigLong(*((int *)data))) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3))
2050 const char *protocolname;
2053 SZ_Clear(&net_message);
2054 SZ_Write(&net_message, data, length);
2060 if (developer.integer >= 10)
2061 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
2062 if(sv_public.integer <= -2)
2065 protocolname = MSG_ReadString();
2066 protocolnumber = MSG_ReadByte();
2067 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
2069 if (developer.integer >= 10)
2070 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
2071 SZ_Clear(&net_message);
2072 // save space for the header, filled in later
2073 MSG_WriteLong(&net_message, 0);
2074 MSG_WriteByte(&net_message, CCREP_REJECT);
2075 MSG_WriteString(&net_message, "Incompatible version.\n");
2076 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2077 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2078 SZ_Clear(&net_message);
2082 // see if this connect request comes from a known client
2083 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2085 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
2087 // this is either a duplicate connection request
2088 // or coming back from a timeout
2089 // (if so, keep their stuff intact)
2092 if (developer.integer >= 10)
2093 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
2094 SZ_Clear(&net_message);
2095 // save space for the header, filled in later
2096 MSG_WriteLong(&net_message, 0);
2097 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2098 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
2099 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2100 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2101 SZ_Clear(&net_message);
2103 // if client is already spawned, re-send the
2104 // serverinfo message as they'll need it to play
2105 if (client->spawned)
2108 SV_SendServerinfo(client);
2115 // this is a new client, check for connection flood
2116 if (NetConn_PreventConnectFlood(peeraddress))
2119 // find a slot for the new client
2120 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
2123 if (!client->active && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
2125 // connect to the client
2126 // everything is allocated, just fill in the details
2127 strlcpy (conn->address, addressstring2, sizeof (conn->address));
2128 if (developer.integer >= 10)
2129 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
2130 // send back the info about the server connection
2131 SZ_Clear(&net_message);
2132 // save space for the header, filled in later
2133 MSG_WriteLong(&net_message, 0);
2134 MSG_WriteByte(&net_message, CCREP_ACCEPT);
2135 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
2136 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2137 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2138 SZ_Clear(&net_message);
2139 // now set up the client struct
2141 SV_ConnectClient(clientnum, conn);
2143 NetConn_Heartbeat(1);
2148 if (developer.integer >= 10)
2149 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
2150 // no room; try to let player know
2151 SZ_Clear(&net_message);
2152 // save space for the header, filled in later
2153 MSG_WriteLong(&net_message, 0);
2154 MSG_WriteByte(&net_message, CCREP_REJECT);
2155 MSG_WriteString(&net_message, "Server is full.\n");
2156 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2157 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2158 SZ_Clear(&net_message);
2160 case CCREQ_SERVER_INFO:
2161 if (developer.integer >= 10)
2162 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
2163 if(sv_public.integer <= -1)
2165 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
2168 char myaddressstring[128];
2169 if (developer.integer >= 10)
2170 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
2171 SZ_Clear(&net_message);
2172 // save space for the header, filled in later
2173 MSG_WriteLong(&net_message, 0);
2174 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
2175 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
2176 MSG_WriteString(&net_message, myaddressstring);
2177 MSG_WriteString(&net_message, hostname.string);
2178 MSG_WriteString(&net_message, sv.name);
2179 // How many clients are there?
2180 for (i = 0, numclients = 0;i < svs.maxclients;i++)
2181 if (svs.clients[i].active)
2183 MSG_WriteByte(&net_message, numclients);
2184 MSG_WriteByte(&net_message, svs.maxclients);
2185 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2186 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2187 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2188 SZ_Clear(&net_message);
2191 case CCREQ_PLAYER_INFO:
2192 if (developer.integer >= 10)
2193 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
2194 if(sv_public.integer <= -1)
2198 int playerNumber, activeNumber, clientNumber;
2201 playerNumber = MSG_ReadByte();
2203 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
2204 if (client->active && ++activeNumber == playerNumber)
2206 if (clientNumber != svs.maxclients)
2208 SZ_Clear(&net_message);
2209 // save space for the header, filled in later
2210 MSG_WriteLong(&net_message, 0);
2211 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
2212 MSG_WriteByte(&net_message, playerNumber);
2213 MSG_WriteString(&net_message, client->name);
2214 MSG_WriteLong(&net_message, client->colors);
2215 MSG_WriteLong(&net_message, client->frags);
2216 MSG_WriteLong(&net_message, (int)(realtime - client->connecttime));
2217 MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient");
2218 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2219 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2220 SZ_Clear(&net_message);
2224 case CCREQ_RULE_INFO:
2225 if (developer.integer >= 10)
2226 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
2227 if(sv_public.integer <= -1)
2234 // find the search start location
2235 prevCvarName = MSG_ReadString();
2236 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
2238 // send the response
2239 SZ_Clear(&net_message);
2240 // save space for the header, filled in later
2241 MSG_WriteLong(&net_message, 0);
2242 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
2245 MSG_WriteString(&net_message, var->name);
2246 MSG_WriteString(&net_message, var->string);
2248 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2249 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
2250 SZ_Clear(&net_message);
2256 SZ_Clear(&net_message);
2257 // we may not have liked the packet, but it was a valid control
2258 // packet, so we're done processing this packet now
2263 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->spawned ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
2266 SV_ReadClientMessage();
2274 void NetConn_ServerFrame(void)
2277 lhnetaddress_t peeraddress;
2278 for (i = 0;i < sv_numsockets;i++)
2279 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2280 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
2281 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2283 // never timeout loopback connections
2284 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2286 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
2288 SV_DropClient(false);
2294 void NetConn_SleepMicroseconds(int microseconds)
2296 LHNET_SleepUntilPacket_Microseconds(microseconds);
2299 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
2303 lhnetaddress_t masteraddress;
2304 lhnetaddress_t broadcastaddress;
2307 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
2310 // 26000 is the default quake server port, servers on other ports will not
2312 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
2313 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
2317 for (i = 0;i < cl_numsockets;i++)
2321 // search LAN for Quake servers
2322 SZ_Clear(&net_message);
2323 // save space for the header, filled in later
2324 MSG_WriteLong(&net_message, 0);
2325 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
2326 MSG_WriteString(&net_message, "QUAKE");
2327 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
2328 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
2329 NetConn_Write(cl_sockets[i], net_message.data, net_message.cursize, &broadcastaddress);
2330 SZ_Clear(&net_message);
2332 // search LAN for DarkPlaces servers
2333 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getinfo", &broadcastaddress);
2335 // build the getservers message to send to the dpmaster master servers
2336 dpsnprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
2339 for (masternum = 0;sv_masters[masternum].name;masternum++)
2341 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2344 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
2351 // only query QuakeWorld servers when the user wants to
2354 for (i = 0;i < cl_numsockets;i++)
2358 // search LAN for QuakeWorld servers
2359 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
2361 // build the getservers message to send to the qwmaster master servers
2362 // note this has no -1 prefix, and the trailing nul byte is sent
2363 dpsnprintf(request, sizeof(request), "c\n");
2366 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
2368 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
2370 if (m_state != m_slist)
2372 char lookupstring[128];
2373 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
2374 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
2377 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
2383 if (!masterquerycount)
2385 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
2386 M_Update_Return_Reason("No network");
2390 void NetConn_Heartbeat(int priority)
2392 lhnetaddress_t masteraddress;
2394 lhnetsocket_t *mysocket;
2396 // if it's a state change (client connected), limit next heartbeat to no
2397 // more than 30 sec in the future
2398 if (priority == 1 && nextheartbeattime > realtime + 30.0)
2399 nextheartbeattime = realtime + 30.0;
2401 // limit heartbeatperiod to 30 to 270 second range,
2402 // lower limit is to avoid abusing master servers with excess traffic,
2403 // upper limit is to avoid timing out on the master server (which uses
2405 if (sv_heartbeatperiod.value < 30)
2406 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
2407 if (sv_heartbeatperiod.value > 270)
2408 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
2410 // make advertising optional and don't advertise singleplayer games, and
2411 // only send a heartbeat as often as the admin wants
2412 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
2414 nextheartbeattime = realtime + sv_heartbeatperiod.value;
2415 for (masternum = 0;sv_masters[masternum].name;masternum++)
2416 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
2417 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
2421 static void Net_Heartbeat_f(void)
2424 NetConn_Heartbeat(2);
2426 Con_Print("No server running, can not heartbeat to master server.\n");
2429 void PrintStats(netconn_t *conn)
2431 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
2432 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->qw.outgoing_sequence, conn->qw.incoming_sequence);
2434 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
2437 void Net_Stats_f(void)
2440 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
2441 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
2442 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
2443 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
2444 Con_Printf("packetsSent = %i\n", packetsSent);
2445 Con_Printf("packetsReSent = %i\n", packetsReSent);
2446 Con_Printf("packetsReceived = %i\n", packetsReceived);
2447 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
2448 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
2449 Con_Print("connections =\n");
2450 for (conn = netconn_list;conn;conn = conn->next)
2454 void Net_Slist_f(void)
2456 ServerList_ResetMasks();
2457 serverlist_sortbyfield = SLIF_PING;
2458 serverlist_sortdescending = false;
2459 if (m_state != m_slist) {
2460 Con_Print("Sending requests to master servers\n");
2461 ServerList_QueryList(true, false);
2462 serverlist_consoleoutput = true;
2463 Con_Print("Listening for replies...\n");
2465 ServerList_QueryList(true, false);
2468 void Net_SlistQW_f(void)
2470 ServerList_ResetMasks();
2471 serverlist_sortbyfield = SLIF_PING;
2472 serverlist_sortdescending = false;
2473 if (m_state != m_slist) {
2474 Con_Print("Sending requests to master servers\n");
2475 ServerList_QueryList(false, true);
2476 serverlist_consoleoutput = true;
2477 Con_Print("Listening for replies...\n");
2479 ServerList_QueryList(false, true);
2482 void NetConn_Init(void)
2485 lhnetaddress_t tempaddress;
2486 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
2487 Cmd_AddCommand("net_stats", Net_Stats_f, "print network statistics");
2488 Cmd_AddCommand("net_slist", Net_Slist_f, "query dp master servers and print all server information");
2489 Cmd_AddCommand("net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
2490 Cmd_AddCommand("heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
2491 Cvar_RegisterVariable(&net_slist_queriespersecond);
2492 Cvar_RegisterVariable(&net_slist_queriesperframe);
2493 Cvar_RegisterVariable(&net_slist_timeout);
2494 Cvar_RegisterVariable(&net_slist_maxtries);
2495 Cvar_RegisterVariable(&net_messagetimeout);
2496 Cvar_RegisterVariable(&net_connecttimeout);
2497 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
2498 Cvar_RegisterVariable(&cl_netlocalping);
2499 Cvar_RegisterVariable(&cl_netpacketloss);
2500 Cvar_RegisterVariable(&hostname);
2501 Cvar_RegisterVariable(&developer_networking);
2502 Cvar_RegisterVariable(&cl_netport);
2503 Cvar_RegisterVariable(&sv_netport);
2504 Cvar_RegisterVariable(&net_address);
2505 //Cvar_RegisterVariable(&net_address_ipv6);
2506 Cvar_RegisterVariable(&sv_public);
2507 Cvar_RegisterVariable(&sv_heartbeatperiod);
2508 for (i = 0;sv_masters[i].name;i++)
2509 Cvar_RegisterVariable(&sv_masters[i]);
2510 Cvar_RegisterVariable(&gameversion);
2511 // 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.
2512 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
2514 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
2516 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
2517 Cvar_SetQuick(&net_address, com_argv[i + 1]);
2520 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
2522 // 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
2523 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
2525 i = atoi(com_argv[i + 1]);
2526 if (i >= 0 && i < 65536)
2528 Con_Printf("-port option used, setting port cvar to %i\n", i);
2529 Cvar_SetValueQuick(&sv_netport, i);
2532 Con_Printf("-port option used, but %i is not a valid port number\n", i);
2536 net_message.data = net_message_buf;
2537 net_message.maxsize = sizeof(net_message_buf);
2538 net_message.cursize = 0;
2542 void NetConn_Shutdown(void)
2544 NetConn_CloseClientPorts();
2545 NetConn_CloseServerPorts();