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 cvar_t sv_public = {0, "sv_public", "0"};
29 static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "180"};
31 static cvar_t sv_masters [] =
33 {CVAR_SAVE, "sv_master1", ""},
34 {CVAR_SAVE, "sv_master2", ""},
35 {CVAR_SAVE, "sv_master3", ""},
36 {CVAR_SAVE, "sv_master4", ""},
37 {0, "sv_masterextra1", "69.59.212.88"},
38 {0, "sv_masterextra2", "66.28.32.64"},
42 static double nextheartbeattime = 0;
44 sizebuf_t net_message;
46 cvar_t net_messagetimeout = {0, "net_messagetimeout","300"};
47 cvar_t net_messagerejointimeout = {0, "net_messagerejointimeout","10"};
48 cvar_t net_connecttimeout = {0, "net_connecttimeout","10"};
49 cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED"};
50 cvar_t developer_networking = {0, "developer_networking", "0"};
52 cvar_t cl_fakelocalping_min = {0, "cl_fakelocalping_min","0"};
53 cvar_t cl_fakelocalping_max = {0, "cl_fakelocalping_max","0"};
54 static cvar_t cl_fakepacketloss_receive = {0, "cl_fakepacketloss_receive","0"};
55 static cvar_t cl_fakepacketloss_send = {0, "cl_fakepacketloss_send","0"};
56 static cvar_t sv_fakepacketloss_receive = {0, "sv_fakepacketloss_receive","0"};
57 static cvar_t sv_fakepacketloss_send = {0, "sv_fakepacketloss_send","0"};
60 /* statistic counters */
61 static int packetsSent = 0;
62 static int packetsReSent = 0;
63 static int packetsReceived = 0;
64 static int receivedDuplicateCount = 0;
65 static int droppedDatagrams = 0;
67 static int unreliableMessagesSent = 0;
68 static int unreliableMessagesReceived = 0;
69 static int reliableMessagesSent = 0;
70 static int reliableMessagesReceived = 0;
72 double masterquerytime = -1000;
73 int masterquerycount = 0;
74 int masterreplycount = 0;
75 int serverquerycount = 0;
76 int serverreplycount = 0;
78 int hostCacheCount = 0;
79 hostcache_t hostcache[HOSTCACHESIZE];
81 static qbyte sendbuffer[NET_MAXMESSAGE];
82 static qbyte readbuffer[NET_MAXMESSAGE];
85 lhnetsocket_t *cl_sockets[16];
87 lhnetsocket_t *sv_sockets[16];
89 netconn_t *netconn_list = NULL;
90 mempool_t *netconn_mempool = NULL;
92 cvar_t cl_netport = {0, "cl_port", "0"};
93 cvar_t sv_netport = {0, "port", "26000"};
94 cvar_t net_address = {0, "net_address", "0.0.0.0"};
95 //cvar_t net_netaddress_ipv6 = {0, "net_address_ipv6", "[0:0:0:0:0:0:0:0]"};
97 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
99 int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
101 if (cl_fakepacketloss_receive.integer)
102 for (i = 0;i < cl_numsockets;i++)
103 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_fakepacketloss_receive.integer)
105 if (sv_fakepacketloss_receive.integer)
106 for (i = 0;i < cl_numsockets;i++)
107 if (sv_sockets[i] == mysocket && (rand() % 100) < sv_fakepacketloss_receive.integer)
109 if (developer_networking.integer && length != 0)
111 char addressstring[128], addressstring2[128];
112 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
115 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
116 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
117 Com_HexDumpToConsole(data, length);
120 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
125 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
129 if (cl_fakepacketloss_send.integer)
130 for (i = 0;i < cl_numsockets;i++)
131 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_fakepacketloss_send.integer)
133 if (sv_fakepacketloss_send.integer)
134 for (i = 0;i < cl_numsockets;i++)
135 if (sv_sockets[i] == mysocket && (rand() % 100) < sv_fakepacketloss_send.integer)
137 ret = LHNET_Write(mysocket, data, length, peeraddress);
138 if (developer_networking.integer)
140 char addressstring[128], addressstring2[128];
141 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
142 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
143 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
144 Com_HexDumpToConsole(data, length);
149 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
151 // note this does not include the trailing NULL because we add that in the parser
152 return NetConn_Write(mysocket, string, strlen(string), peeraddress);
155 int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data)
157 unsigned int packetLen;
158 unsigned int dataLen;
160 unsigned int *header;
163 if (data->cursize == 0)
164 Sys_Error("Datagram_SendMessage: zero length message\n");
166 if (data->cursize > NET_MAXMESSAGE)
167 Sys_Error("Datagram_SendMessage: message too big %u\n", data->cursize);
169 if (conn->canSend == false)
170 Sys_Error("SendMessage: called with canSend == false\n");
173 memcpy(conn->sendMessage, data->data, data->cursize);
174 conn->sendMessageLength = data->cursize;
176 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
178 dataLen = conn->sendMessageLength;
183 dataLen = MAX_PACKETFRAGMENT;
187 packetLen = NET_HEADERSIZE + dataLen;
189 header = (void *)sendbuffer;
190 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
191 header[1] = BigLong(conn->sendSequence);
192 memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
194 conn->sendSequence++;
195 conn->canSend = false;
197 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
200 conn->lastSendTime = realtime;
202 reliableMessagesSent++;
206 static void NetConn_SendMessageNext(netconn_t *conn)
208 unsigned int packetLen;
209 unsigned int dataLen;
211 unsigned int *header;
213 if (conn->sendMessageLength && !conn->canSend && conn->sendNext)
215 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
217 dataLen = conn->sendMessageLength;
222 dataLen = MAX_PACKETFRAGMENT;
226 packetLen = NET_HEADERSIZE + dataLen;
228 header = (void *)sendbuffer;
229 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
230 header[1] = BigLong(conn->sendSequence);
231 memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
233 conn->sendSequence++;
234 conn->sendNext = false;
236 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
239 conn->lastSendTime = realtime;
244 static void NetConn_ReSendMessage(netconn_t *conn)
246 unsigned int packetLen;
247 unsigned int dataLen;
249 unsigned int *header;
251 if (conn->sendMessageLength && !conn->canSend && (realtime - conn->lastSendTime) > 1.0)
253 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
255 dataLen = conn->sendMessageLength;
260 dataLen = MAX_PACKETFRAGMENT;
264 packetLen = NET_HEADERSIZE + dataLen;
266 header = (void *)sendbuffer;
267 header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
268 header[1] = BigLong(conn->sendSequence - 1);
269 memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
271 conn->sendNext = false;
273 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
276 conn->lastSendTime = realtime;
281 qboolean NetConn_CanSendMessage(netconn_t *conn)
283 return conn->canSend;
286 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data)
292 if (data->cursize == 0)
293 Sys_Error("Datagram_SendUnreliableMessage: zero length message\n");
295 if (data->cursize > MAX_DATAGRAM)
296 Sys_Error("Datagram_SendUnreliableMessage: message too big %u\n", data->cursize);
299 packetLen = NET_HEADERSIZE + data->cursize;
301 header = (void *)sendbuffer;
302 header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
303 header[1] = BigLong(conn->unreliableSendSequence);
304 memcpy(sendbuffer + 8, data->data, data->cursize);
306 conn->unreliableSendSequence++;
308 if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
312 unreliableMessagesSent++;
316 void NetConn_CloseClientPorts(void)
318 for (;cl_numsockets > 0;cl_numsockets--)
319 if (cl_sockets[cl_numsockets - 1])
320 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
323 void NetConn_OpenClientPort(const char *addressstring, int defaultport)
325 lhnetaddress_t address;
327 char addressstring2[1024];
328 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
330 if ((s = LHNET_OpenSocket_Connectionless(&address)))
332 cl_sockets[cl_numsockets++] = s;
333 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
334 Con_Printf("Client opened a socket on address %s\n", addressstring2);
338 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
339 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
343 Con_Printf("Client unable to parse address %s\n", addressstring);
346 void NetConn_OpenClientPorts(void)
349 NetConn_CloseClientPorts();
350 port = bound(0, cl_netport.integer, 65535);
351 if (cl_netport.integer != port)
352 Cvar_SetValueQuick(&cl_netport, port);
353 Con_Printf("Client using port %i\n", port);
354 NetConn_OpenClientPort("local:2", 0);
355 NetConn_OpenClientPort(net_address.string, port);
356 //NetConn_OpenClientPort(net_address_ipv6.string, port);
359 void NetConn_CloseServerPorts(void)
361 for (;sv_numsockets > 0;sv_numsockets--)
362 if (sv_sockets[sv_numsockets - 1])
363 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
366 void NetConn_OpenServerPort(const char *addressstring, int defaultport)
368 lhnetaddress_t address;
370 char addressstring2[1024];
371 if (LHNETADDRESS_FromString(&address, addressstring, defaultport))
373 if ((s = LHNET_OpenSocket_Connectionless(&address)))
375 sv_sockets[sv_numsockets++] = s;
376 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
377 Con_Printf("Server listening on address %s\n", addressstring2);
381 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
382 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
386 Con_Printf("Server unable to parse address %s\n", addressstring);
389 void NetConn_OpenServerPorts(int opennetports)
392 NetConn_CloseServerPorts();
393 port = bound(0, sv_netport.integer, 65535);
396 Con_Printf("Server using port %i\n", port);
397 if (sv_netport.integer != port)
398 Cvar_SetValueQuick(&sv_netport, port);
399 if (cls.state != ca_dedicated)
400 NetConn_OpenServerPort("local:1", 0);
403 NetConn_OpenServerPort(net_address.string, port);
404 //NetConn_OpenServerPort(net_address_ipv6.string, port);
406 if (sv_numsockets == 0)
407 Host_Error("NetConn_OpenServerPorts: unable to open any ports!\n");
410 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
412 int i, a = LHNETADDRESS_GetAddressType(address);
413 for (i = 0;i < cl_numsockets;i++)
414 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
415 return cl_sockets[i];
419 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
421 int i, a = LHNETADDRESS_GetAddressType(address);
422 for (i = 0;i < sv_numsockets;i++)
423 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
424 return sv_sockets[i];
428 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
431 conn = Mem_Alloc(netconn_mempool, sizeof(*conn));
432 conn->mysocket = mysocket;
433 conn->peeraddress = *peeraddress;
434 conn->canSend = true;
435 conn->connecttime = realtime;
436 conn->lastMessageTime = realtime;
437 // LordHavoc: (inspired by ProQuake) use a short connect timeout to
438 // reduce effectiveness of connection request floods
439 conn->timeout = realtime + net_connecttimeout.value;
440 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
441 conn->next = netconn_list;
446 void NetConn_Close(netconn_t *conn)
449 // remove connection from list
450 if (conn == netconn_list)
451 netconn_list = conn->next;
454 for (c = netconn_list;c;c = c->next)
458 c->next = conn->next;
462 // not found in list, we'll avoid crashing here...
470 static int clientport = -1;
471 static int clientport2 = -1;
472 static int hostport = -1;
473 static void NetConn_UpdateServerStuff(void)
475 if (cls.state != ca_dedicated)
477 if (clientport2 != cl_netport.integer)
479 clientport2 = cl_netport.integer;
480 if (cls.state == ca_connected)
481 Con_Printf("Changing \"cl_port\" will not take effect until you reconnect.\n");
483 if (cls.state == ca_disconnected && clientport != clientport2)
485 clientport = clientport2;
486 NetConn_CloseClientPorts();
488 if (cl_numsockets == 0)
489 NetConn_OpenClientPorts();
492 if (hostport != sv_netport.integer)
494 hostport = sv_netport.integer;
496 Con_Printf("Changing \"port\" will not take effect until \"map\" command is executed.\n");
500 int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length)
504 unsigned int sequence;
508 length = BigLong(((int *)data)[0]);
509 flags = length & ~NETFLAG_LENGTH_MASK;
510 length &= NETFLAG_LENGTH_MASK;
511 // control packets were already handled
512 if (!(flags & NETFLAG_CTL))
514 sequence = BigLong(((int *)data)[1]);
518 if (flags & NETFLAG_UNRELIABLE)
520 if (sequence >= conn->unreliableReceiveSequence)
522 if (sequence > conn->unreliableReceiveSequence)
524 count = sequence - conn->unreliableReceiveSequence;
525 droppedDatagrams += count;
526 Con_DPrintf("Dropped %u datagram(s)\n", count);
528 conn->unreliableReceiveSequence = sequence + 1;
529 conn->lastMessageTime = realtime;
530 conn->timeout = realtime + net_messagetimeout.value;
531 unreliableMessagesReceived++;
534 SZ_Clear(&net_message);
535 SZ_Write(&net_message, data, length);
541 Con_DPrintf("Got a stale datagram\n");
544 else if (flags & NETFLAG_ACK)
546 if (sequence == (conn->sendSequence - 1))
548 if (sequence == conn->ackSequence)
551 if (conn->ackSequence != conn->sendSequence)
552 Con_DPrintf("ack sequencing error\n");
553 conn->lastMessageTime = realtime;
554 conn->timeout = realtime + net_messagetimeout.value;
555 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
556 if (conn->sendMessageLength > 0)
558 memcpy(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
559 conn->sendNext = true;
560 NetConn_SendMessageNext(conn);
564 conn->sendMessageLength = 0;
565 conn->canSend = true;
569 Con_DPrintf("Duplicate ACK received\n");
572 Con_DPrintf("Stale ACK received\n");
575 else if (flags & NETFLAG_DATA)
577 unsigned int temppacket[2];
578 temppacket[0] = BigLong(8 | NETFLAG_ACK);
579 temppacket[1] = BigLong(sequence);
580 NetConn_Write(conn->mysocket, (qbyte *)temppacket, 8, &conn->peeraddress);
581 if (sequence == conn->receiveSequence)
583 conn->lastMessageTime = realtime;
584 conn->timeout = realtime + net_messagetimeout.value;
585 conn->receiveSequence++;
586 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
587 conn->receiveMessageLength += length;
588 if (flags & NETFLAG_EOM)
590 reliableMessagesReceived++;
591 length = conn->receiveMessageLength;
592 conn->receiveMessageLength = 0;
595 SZ_Clear(&net_message);
596 SZ_Write(&net_message, conn->receiveMessage, length);
603 receivedDuplicateCount++;
611 void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
613 cls.netcon = NetConn_Open(mysocket, peeraddress);
614 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
617 cls.connect_trying = false;
618 cls.demonum = -1; // not in the demo loop now
619 cls.state = ca_connected;
620 cls.signon = 0; // need all the signon messages before playing
625 int NetConn_IsLocalGame(void)
627 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
635 lhnetaddress_t peeraddress;
637 pingcache[HOSTCACHESIZE];
639 int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
642 lhnetaddress_t svaddress;
644 char *string, addressstring2[128], cname[128], ipstring[32];
645 char stringbuf[16384];
647 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
649 // received a command string - strip off the packaging and put it
650 // into our string buffer with NULL termination
653 length = min(length, (int)sizeof(stringbuf) - 1);
654 memcpy(stringbuf, data, length);
655 stringbuf[length] = 0;
658 if (developer.integer)
660 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
661 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
662 Com_HexDumpToConsole(data, length);
665 if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
667 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
668 Con_Printf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
669 NetConn_WriteString(mysocket, va("\377\377\377\377connect\\protocol\\darkplaces 3\\challenge\\%s", string + 10), peeraddress);
672 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
674 NetConn_ConnectionEstablished(mysocket, peeraddress);
677 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
679 cls.connect_trying = false;
681 length = max(length - 7, (int)sizeof(m_return_reason) - 1);
682 memcpy(m_return_reason, string, length);
683 m_return_reason[length] = 0;
684 Con_Printf("%s\n", m_return_reason);
687 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
689 int i, j, c, n, users, maxusers;
690 char game[32], mod[32], map[32], name[128];
694 // hostcache only uses text addresses
695 LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
696 if ((s = SearchInfostring(string, "gamename" )) != NULL) strlcpy(game, s, sizeof (game));else game[0] = 0;
697 if ((s = SearchInfostring(string, "modname" )) != NULL) strlcpy(mod , s, sizeof (mod ));else mod[0] = 0;
698 if ((s = SearchInfostring(string, "mapname" )) != NULL) strlcpy(map , s, sizeof (map ));else map[0] = 0;
699 if ((s = SearchInfostring(string, "hostname" )) != NULL) strlcpy(name, s, sizeof (name));else name[0] = 0;
700 if ((s = SearchInfostring(string, "protocol" )) != NULL) c = atoi(s);else c = -1;
701 if ((s = SearchInfostring(string, "clients" )) != NULL) users = atoi(s);else users = 0;
702 if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) maxusers = atoi(s);else maxusers = 0;
703 // search the cache for this server and update it
704 for (n = 0; n < hostCacheCount; n++)
706 if (!strcmp(cname, hostcache[n].cname))
708 if (hostcache[n].ping == 100000)
710 pingtime = (int)((realtime - hostcache[n].querytime) * 1000.0);
711 pingtime = bound(0, pingtime, 9999);
713 hostcache[n].ping = pingtime;
714 // build description strings for the things users care about
715 snprintf(hostcache[n].line1, sizeof(hostcache[n].line1), "%5d%c%3u/%3u %-65.65s", (int)pingtime, c != NET_PROTOCOL_VERSION ? '*' : ' ', users, maxusers, name);
716 snprintf(hostcache[n].line2, sizeof(hostcache[n].line2), "%-21.21s %-19.19s %-17.17s %-20.20s", cname, game, mod, map);
717 // if ping is especially high, display it as such
720 // orange numbers (lower block)
721 for (i = 0;i < 5;i++)
722 if (hostcache[n].line1[i] != ' ')
723 hostcache[n].line1[i] += 128;
725 else if (pingtime >= 200)
727 // yellow numbers (in upper block)
728 for (i = 0;i < 5;i++)
729 if (hostcache[n].line1[i] != ' ')
730 hostcache[n].line1[i] -= 30;
732 // if not in the slist menu we should print the server to console
733 if (m_state != m_slist)
734 Con_Printf("%s\n%s\n", hostcache[n].line1, hostcache[n].line2);
735 // and finally, re-sort the list
736 for (i = 0;i < hostCacheCount;i++)
738 for (j = i + 1;j < hostCacheCount;j++)
740 //if (strcmp(hostcache[j].name, hostcache[i].name) < 0)
741 if (hostcache[i].ping > hostcache[j].ping)
743 memcpy(&temp, &hostcache[j], sizeof(hostcache_t));
744 memcpy(&hostcache[j], &hostcache[i], sizeof(hostcache_t));
745 memcpy(&hostcache[i], &temp, sizeof(hostcache_t));
754 if (!strncmp(string, "getserversResponse\\", 19) && hostCacheCount < HOSTCACHESIZE)
758 // Extract the IP addresses
762 if (m_state != m_slist)
763 Con_Printf("received server list...\n");
764 while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
766 snprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], (data[5] << 8) | data[6]);
767 if (developer.integer)
768 Con_Printf("Requesting info from server %s\n", ipstring);
769 LHNETADDRESS_FromString(&svaddress, ipstring, 0);
770 NetConn_WriteString(mysocket, "\377\377\377\377getinfo", &svaddress);
773 // add to slist (hostCache)
774 // search the cache for this server
775 for (n = 0; n < hostCacheCount; n++)
776 if (!strcmp(ipstring, hostcache[n].cname))
778 // add it or update it
779 if (n == hostCacheCount)
781 // if cache is full replace highest ping server (the list is
782 // kept sorted so this is always the last, and if this server
783 // is good it will be sorted into an early part of the list)
784 if (hostCacheCount >= HOSTCACHESIZE)
785 n = hostCacheCount - 1;
792 memset(&hostcache[n], 0, sizeof(hostcache[n]));
793 // store the data the engine cares about (address and ping)
794 strlcpy (hostcache[n].cname, ipstring, sizeof (hostcache[n].cname));
795 hostcache[n].ping = 100000;
796 hostcache[n].querytime = realtime;
797 // build description strings for the things users care about
798 snprintf(hostcache[n].line1, sizeof(hostcache[n].line1), "?");
799 snprintf(hostcache[n].line2, sizeof(hostcache[n].line2), "%s", ipstring);
800 // if not in the slist menu we should print the server to console
801 if (m_state != m_slist)
802 Con_Printf("querying %s\n", ipstring);
803 // and finally, re-sort the list
804 for (i = 0;i < hostCacheCount;i++)
806 for (j = i + 1;j < hostCacheCount;j++)
808 //if (strcmp(hostcache[j].name, hostcache[i].name) < 0)
809 if (hostcache[i].ping > hostcache[j].ping)
811 memcpy(&temp, &hostcache[j], sizeof(hostcache_t));
812 memcpy(&hostcache[j], &hostcache[i], sizeof(hostcache_t));
813 memcpy(&hostcache[i], &temp, sizeof(hostcache_t));
819 // move on to next address in packet
826 if (!strncmp(string, "ping", 4))
828 if (developer.integer)
829 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
830 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
833 if (!strncmp(string, "ack", 3))
836 // we may not have liked the packet, but it was a command packet, so
837 // we're done processing this packet now
840 // netquake control packets, supported for compatibility only
841 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
846 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
850 if (developer.integer)
851 Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
852 if (cls.connect_trying)
854 lhnetaddress_t clientportaddress;
855 clientportaddress = *peeraddress;
858 unsigned int port = (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
861 LHNETADDRESS_SetPort(&clientportaddress, port);
863 NetConn_ConnectionEstablished(mysocket, &clientportaddress);
867 if (developer.integer)
868 Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
869 Con_Printf("%s\n", data);
870 strlcpy (m_return_reason, data, sizeof (m_return_reason));
873 case CCREP_SERVER_INFO:
874 if (developer.integer)
875 Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
876 if (cls.state != ca_dedicated)
878 // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
879 // string we just ignore it and keep the real address
881 // hostcache only uses text addresses
882 cname = UDP_AddrToString(readaddr);
883 // search the cache for this server
884 for (n = 0; n < hostCacheCount; n++)
885 if (!strcmp(cname, hostcache[n].cname))
888 if (n == hostCacheCount && hostCacheCount < HOSTCACHESIZE)
891 memset(&hostcache[n], 0, sizeof(hostcache[n]));
892 strlcpy (hostcache[n].name, MSG_ReadString(), sizeof (hostcache[n].name));
893 strlcpy (hostcache[n].map, MSG_ReadString(), sizeof (hostcache[n].map));
894 hostcache[n].users = MSG_ReadByte();
895 hostcache[n].maxusers = MSG_ReadByte();
897 if (c != NET_PROTOCOL_VERSION)
899 strlcpy (hostcache[n].cname, hostcache[n].name, sizeof (hostcache[n].cname));
900 strcpy(hostcache[n].name, "*");
901 strlcat (hostcache[n].name, hostcache[n].cname, sizeof(hostcache[n].name));
903 strlcpy (hostcache[n].cname, cname, sizeof (hostcache[n].cname));
907 case CCREP_PLAYER_INFO:
908 // we got a CCREP_PLAYER_INFO??
909 //if (developer.integer)
910 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
912 case CCREP_RULE_INFO:
913 // we got a CCREP_RULE_INFO??
914 //if (developer.integer)
915 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
921 // we may not have liked the packet, but it was a valid control
922 // packet, so we're done processing this packet now
926 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)
927 CL_ParseServerMessage();
931 void NetConn_ClientFrame(void)
934 lhnetaddress_t peeraddress;
936 NetConn_UpdateServerStuff();
937 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
939 if (cls.connect_remainingtries == 0)
941 cls.connect_trying = false;
942 if (m_state == m_slist)
943 strcpy (m_return_reason, "Connect: Failed");
945 Con_Printf("Connect failed\n");
948 if (cls.connect_nextsendtime)
950 if (m_state == m_slist)
951 strcpy (m_return_reason, "Connect: Still trying");
953 Con_Printf("Still trying...\n");
957 if (m_state == m_slist)
958 strcpy (m_return_reason, "Connect: Trying");
960 Con_Printf("Trying...\n");
962 cls.connect_nextsendtime = realtime + 1;
963 cls.connect_remainingtries--;
964 // try challenge first (newer server)
965 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
966 // then try netquake as a fallback (old server, or netquake)
967 SZ_Clear(&net_message);
968 // save space for the header, filled in later
969 MSG_WriteLong(&net_message, 0);
970 MSG_WriteByte(&net_message, CCREQ_CONNECT);
971 MSG_WriteString(&net_message, "QUAKE");
972 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
973 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
974 NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
975 SZ_Clear(&net_message);
977 for (i = 0;i < cl_numsockets;i++)
978 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
979 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
980 if (cls.netcon && realtime > cls.netcon->timeout)
982 Con_Printf("Connection timed out\n");
985 for (conn = netconn_list;conn;conn = conn->next)
986 NetConn_ReSendMessage(conn);
989 #define MAX_CHALLENGES 128
992 lhnetaddress_t address;
996 challenge[MAX_CHALLENGES];
998 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
1002 for (i = 0;i < bufferlength - 1;i++)
1006 c = rand () % (127 - 33) + 33;
1007 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
1013 extern void SV_ConnectClient(int clientnum, netconn_t *netconnection);
1014 int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
1016 int i, n, ret, clientnum, responselength, best;
1020 char *s, *string, response[512], addressstring2[128], stringbuf[16384];
1024 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1026 // received a command string - strip off the packaging and put it
1027 // into our string buffer with NULL termination
1030 length = min(length, (int)sizeof(stringbuf) - 1);
1031 memcpy(stringbuf, data, length);
1032 stringbuf[length] = 0;
1035 if (developer.integer)
1037 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1038 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
1039 Com_HexDumpToConsole(data, length);
1042 if (length >= 12 && !memcmp(string, "getchallenge", 12))
1044 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
1046 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address))
1048 if (besttime > challenge[i].time)
1049 besttime = challenge[best = i].time;
1051 // if we did not find an exact match, choose the oldest and
1052 // update address and string
1053 if (i == MAX_CHALLENGES)
1056 challenge[i].address = *peeraddress;
1057 NetConn_BuildChallengeString(challenge[i].string, sizeof(challenge[i].string));
1059 challenge[i].time = realtime;
1060 // send the challenge
1061 NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress);
1064 if (length > 8 && !memcmp(string, "connect\\", 8))
1068 if ((s = SearchInfostring(string, "challenge")))
1070 // validate the challenge
1071 for (i = 0;i < MAX_CHALLENGES;i++)
1072 if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s))
1074 if (i < MAX_CHALLENGES)
1076 // check engine protocol
1077 if (strcmp(SearchInfostring(string, "protocol"), "darkplaces 3"))
1079 if (developer.integer)
1080 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
1081 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
1085 // see if this is a duplicate connection request
1086 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1087 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1089 if (clientnum < svs.maxclients)
1091 // duplicate connection request
1092 if (realtime - client->netconnection->connecttime < 2.0)
1094 // client is still trying to connect,
1095 // so we send a duplicate reply
1096 if (developer.integer)
1097 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
1098 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1100 // only kick if old connection seems dead
1101 if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1103 // kick off connection and await retry
1104 client->deadsocket = true;
1109 // this is a new client, find a slot
1110 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1111 if (!client->active)
1113 if (clientnum < svs.maxclients)
1115 // prepare the client struct
1116 if ((client->entitydatabase4 = EntityFrame4_AllocDatabase(sv_clients_mempool)))
1118 if ((conn = NetConn_Open(mysocket, peeraddress)))
1120 // allocated connection
1121 LHNETADDRESS_ToString(peeraddress, conn->address, sizeof(conn->address), true);
1122 if (developer.integer)
1123 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
1124 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
1125 // now set up the client
1126 SV_ConnectClient(clientnum, conn);
1127 NetConn_Heartbeat(1);
1130 EntityFrame4_FreeDatabase(client->entitydatabase4);
1136 if (developer.integer)
1137 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
1138 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
1146 if (length >= 7 && !memcmp(string, "getinfo", 7))
1148 const char *challenge = NULL;
1149 // If there was a challenge in the getinfo message
1150 if (length > 8 && string[7] == ' ')
1151 challenge = string + 8;
1152 for (i = 0, n = 0;i < svs.maxclients;i++)
1153 if (svs.clients[i].active)
1155 responselength = snprintf(response, sizeof(response), "\377\377\377\377infoResponse\x0A"
1156 "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
1157 "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d%s%s",
1158 gamename, com_modname, svs.maxclients, n,
1159 sv.name, hostname.string, NET_PROTOCOL_VERSION, challenge ? "\\challenge\\" : "", challenge ? challenge : "");
1160 // does it fit in the buffer?
1161 if (responselength < (int)sizeof(response))
1163 if (developer.integer)
1164 Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
1165 NetConn_WriteString(mysocket, response, peeraddress);
1170 if (!strncmp(string, "ping", 4))
1172 if (developer.integer)
1173 Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
1174 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
1177 if (!strncmp(string, "ack", 3))
1180 // we may not have liked the packet, but it was a command packet, so
1181 // we're done processing this packet now
1184 // LordHavoc: disabled netquake control packet support in server
1188 // netquake control packets, supported for compatibility only
1189 if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
1194 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1198 //if (developer.integer)
1199 Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
1200 if (length >= (int)strlen("QUAKE") + 1 + 1)
1202 if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
1204 if (developer.integer)
1205 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
1206 SZ_Clear(&net_message);
1207 // save space for the header, filled in later
1208 MSG_WriteLong(&net_message, 0);
1209 MSG_WriteByte(&net_message, CCREP_REJECT);
1210 MSG_WriteString(&net_message, "Incompatible version.\n");
1211 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1212 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1213 SZ_Clear(&net_message);
1217 // see if this is a duplicate connection request
1218 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1219 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
1221 if (clientnum < svs.maxclients)
1223 // duplicate connection request
1224 if (realtime - client->netconnection->connecttime < 2.0)
1226 // client is still trying to connect,
1227 // so we send a duplicate reply
1228 if (developer.integer)
1229 Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
1230 SZ_Clear(&net_message);
1231 // save space for the header, filled in later
1232 MSG_WriteLong(&net_message, 0);
1233 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1234 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
1235 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1236 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1237 SZ_Clear(&net_message);
1239 else if (realtime - client->netconnection->lastMessageTime >= net_messagerejointimeout.value)
1241 // the old client hasn't sent us anything
1242 // in quite a while, so kick off and let
1243 // the retry take care of it...
1244 client->deadsocket = true;
1249 // this is a new client, find a slot
1250 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
1251 if (!client->active)
1253 if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
1255 // connect to the client
1256 // everything is allocated, just fill in the details
1257 strlcpy (conn->address, addressstring2, sizeof (conn->address));
1258 if (developer.integer)
1259 Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
1260 // send back the info about the server connection
1261 SZ_Clear(&net_message);
1262 // save space for the header, filled in later
1263 MSG_WriteLong(&net_message, 0);
1264 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1265 MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
1266 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1267 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1268 SZ_Clear(&net_message);
1269 // now set up the client struct
1270 SV_ConnectClient(clientnum, conn);
1271 NetConn_Heartbeat(1);
1275 //if (developer.integer)
1276 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
1277 // no room; try to let player know
1278 SZ_Clear(&net_message);
1279 // save space for the header, filled in later
1280 MSG_WriteLong(&net_message, 0);
1281 MSG_WriteByte(&net_message, CCREP_REJECT);
1282 MSG_WriteString(&net_message, "Server is full.\n");
1283 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1284 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1285 SZ_Clear(&net_message);
1292 case CCREQ_SERVER_INFO:
1293 if (developer.integer)
1294 Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
1295 if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
1297 if (developer.integer)
1298 Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
1299 SZ_Clear(&net_message);
1300 // save space for the header, filled in later
1301 MSG_WriteLong(&net_message, 0);
1302 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
1303 UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
1304 MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
1305 MSG_WriteString(&net_message, hostname.string);
1306 MSG_WriteString(&net_message, sv.name);
1307 MSG_WriteByte(&net_message, net_activeconnections);
1308 MSG_WriteByte(&net_message, svs.maxclients);
1309 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1310 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1311 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1312 SZ_Clear(&net_message);
1315 case CCREQ_PLAYER_INFO:
1316 if (developer.integer)
1317 Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
1320 int playerNumber, activeNumber, clientNumber;
1323 playerNumber = MSG_ReadByte();
1325 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
1326 if (client->active && ++activeNumber == playerNumber)
1328 if (clientNumber != svs.maxclients)
1330 SZ_Clear(&net_message);
1331 // save space for the header, filled in later
1332 MSG_WriteLong(&net_message, 0);
1333 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
1334 MSG_WriteByte(&net_message, playerNumber);
1335 MSG_WriteString(&net_message, client->name);
1336 MSG_WriteLong(&net_message, client->colors);
1337 MSG_WriteLong(&net_message, (int)client->edict->v->frags);
1338 MSG_WriteLong(&net_message, (int)(realtime - client->netconnection->connecttime));
1339 MSG_WriteString(&net_message, client->netconnection->address);
1340 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1341 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1342 SZ_Clear(&net_message);
1346 case CCREQ_RULE_INFO:
1347 if (developer.integer)
1348 Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
1354 // find the search start location
1355 prevCvarName = MSG_ReadString();
1356 var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
1358 // send the response
1359 SZ_Clear(&net_message);
1360 // save space for the header, filled in later
1361 MSG_WriteLong(&net_message, 0);
1362 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
1365 MSG_WriteString(&net_message, var->name);
1366 MSG_WriteString(&net_message, var->string);
1368 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1369 NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
1370 SZ_Clear(&net_message);
1377 // we may not have liked the packet, but it was a valid control
1378 // packet, so we're done processing this packet now
1383 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1385 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
1387 sv_player = host_client->edict;
1388 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length)) == 2)
1389 SV_ReadClientMessage();
1397 void NetConn_ServerFrame(void)
1400 lhnetaddress_t peeraddress;
1402 NetConn_UpdateServerStuff();
1403 for (i = 0;i < sv_numsockets;i++)
1404 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
1405 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
1406 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1408 // never timeout loopback connections
1409 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(host_client->netconnection->mysocket)) != LHNETADDRESSTYPE_LOOP)
1411 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
1412 sv_player = host_client->edict;
1413 SV_DropClient(false);
1416 for (conn = netconn_list;conn;conn = conn->next)
1417 NetConn_ReSendMessage(conn);
1420 void NetConn_QueryMasters(void)
1424 lhnetaddress_t masteraddress;
1427 if (hostCacheCount >= HOSTCACHESIZE)
1430 for (i = 0;i < cl_numsockets;i++)
1437 UDP_Broadcast(UDP_controlSock, "\377\377\377\377getinfo", 11);
1439 SZ_Clear(&net_message);
1440 // save space for the header, filled in later
1441 MSG_WriteLong(&net_message, 0);
1442 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
1443 MSG_WriteString(&net_message, "QUAKE");
1444 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1445 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1446 UDP_Broadcast(UDP_controlSock, net_message.data, net_message.cursize);
1447 SZ_Clear(&net_message);
1451 // build the getservers
1452 snprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
1455 for (masternum = 0;sv_masters[masternum].name;masternum++)
1457 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
1460 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
1465 if (!masterquerycount)
1467 Con_Printf("Unable to query master servers, no suitable network sockets active.\n");
1468 strcpy(m_return_reason, "No network");
1472 void NetConn_Heartbeat(int priority)
1474 lhnetaddress_t masteraddress;
1476 lhnetsocket_t *mysocket;
1478 // if it's a state change (client connected), limit next heartbeat to no
1479 // more than 30 sec in the future
1480 if (priority == 1 && nextheartbeattime > realtime + 30.0)
1481 nextheartbeattime = realtime + 30.0;
1483 // limit heartbeatperiod to 30 to 270 second range,
1484 // lower limit is to avoid abusing master servers with excess traffic,
1485 // upper limit is to avoid timing out on the master server (which uses
1487 if (sv_heartbeatperiod.value < 30)
1488 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
1489 if (sv_heartbeatperiod.value > 270)
1490 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
1492 // make advertising optional and don't advertise singleplayer games, and
1493 // only send a heartbeat as often as the admin wants
1494 if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
1496 nextheartbeattime = realtime + sv_heartbeatperiod.value;
1497 for (masternum = 0;sv_masters[masternum].name;masternum++)
1498 if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
1499 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
1503 int NetConn_SendToAll(sizebuf_t *data, double blocktime)
1506 qbyte sent[MAX_SCOREBOARD];
1508 memset(sent, 0, sizeof(sent));
1510 // simultaneously wait for the first CanSendMessage and send the message,
1511 // then wait for a second CanSendMessage (verifying it was received), or
1512 // the client drops and is no longer counted
1513 // the loop aborts when either it runs out of clients to send to, or a
1515 blocktime += Sys_DoubleTime();
1519 NetConn_ClientFrame();
1520 NetConn_ServerFrame();
1521 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
1523 if (host_client->netconnection)
1525 if (NetConn_CanSendMessage(host_client->netconnection))
1528 NetConn_SendReliableMessage(host_client->netconnection, data);
1531 if (!NetConn_CanSendMessage(host_client->netconnection))
1536 while (count && Sys_DoubleTime() < blocktime);
1540 static void Net_Heartbeat_f(void)
1543 NetConn_Heartbeat(2);
1545 Con_Printf("No server running, can not heartbeat to master server.\n");
1548 void PrintStats(netconn_t *conn)
1550 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, conn->canSend, conn->sendSequence, conn->receiveSequence);
1553 void Net_Stats_f(void)
1556 Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
1557 Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
1558 Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
1559 Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
1560 Con_Printf("packetsSent = %i\n", packetsSent);
1561 Con_Printf("packetsReSent = %i\n", packetsReSent);
1562 Con_Printf("packetsReceived = %i\n", packetsReceived);
1563 Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
1564 Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
1565 Con_Printf("connections =\n");
1566 for (conn = netconn_list;conn;conn = conn->next)
1570 void Net_Slist_f(void)
1572 masterquerytime = realtime;
1573 masterquerycount = 0;
1574 masterreplycount = 0;
1575 serverquerycount = 0;
1576 serverreplycount = 0;
1578 memset(&pingcache, 0, sizeof(pingcache));
1579 if (m_state != m_slist)
1580 Con_Printf("Sending requests to master servers\n");
1581 NetConn_QueryMasters();
1582 if (m_state != m_slist)
1583 Con_Printf("Listening for replies...\n");
1586 void NetConn_Init(void)
1589 lhnetaddress_t tempaddress;
1590 netconn_mempool = Mem_AllocPool("Networking");
1591 Cmd_AddCommand("net_stats", Net_Stats_f);
1592 Cmd_AddCommand("net_slist", Net_Slist_f);
1593 Cmd_AddCommand("heartbeat", Net_Heartbeat_f);
1594 Cvar_RegisterVariable(&net_messagetimeout);
1595 Cvar_RegisterVariable(&net_messagerejointimeout);
1596 Cvar_RegisterVariable(&net_connecttimeout);
1597 Cvar_RegisterVariable(&cl_fakelocalping_min);
1598 Cvar_RegisterVariable(&cl_fakelocalping_max);
1599 Cvar_RegisterVariable(&cl_fakepacketloss_receive);
1600 Cvar_RegisterVariable(&cl_fakepacketloss_send);
1601 Cvar_RegisterVariable(&sv_fakepacketloss_receive);
1602 Cvar_RegisterVariable(&sv_fakepacketloss_send);
1603 Cvar_RegisterVariable(&hostname);
1604 Cvar_RegisterVariable(&developer_networking);
1605 Cvar_RegisterVariable(&cl_netport);
1606 Cvar_RegisterVariable(&sv_netport);
1607 Cvar_RegisterVariable(&net_address);
1608 //Cvar_RegisterVariable(&net_address_ipv6);
1609 Cvar_RegisterVariable(&sv_public);
1610 Cvar_RegisterVariable(&sv_heartbeatperiod);
1611 for (i = 0;sv_masters[i].name;i++)
1612 Cvar_RegisterVariable(&sv_masters[i]);
1613 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
1615 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
1617 Con_Printf("-ip option used, setting net_address to \"%s\"\n");
1618 Cvar_SetQuick(&net_address, com_argv[i + 1]);
1621 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
1623 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
1625 i = atoi(com_argv[i + 1]);
1626 if (i >= 0 && i < 65536)
1628 Con_Printf("-port option used, setting port cvar to %i\n", i);
1629 Cvar_SetValueQuick(&sv_netport, i);
1632 Con_Printf("-port option used, but %i is not a valid port number\n", i);
1636 memset(&pingcache, 0, sizeof(pingcache));
1637 SZ_Alloc(&net_message, NET_MAXMESSAGE, "net_message");
1641 void NetConn_Shutdown(void)
1643 NetConn_CloseClientPorts();
1644 NetConn_CloseServerPorts();