net_dgrm.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // net_dgrm.c
  21
  22 // This is enables a simple IP banning mechanism
  23 #define BAN_TEST
  24
  25 #ifdef BAN_TEST
  26 #if defined(_WIN32)
  27 #include <windows.h>
  28 #elif defined (NeXT)
  29 #include <sys/socket.h>
  30 #include <arpa/inet.h>
  31 #else
  32 #define AF_INET                 2       /* internet */
  33 struct in_addr
  34 {
  35         union
  36         {
  37                 struct { unsigned char s_b1,s_b2,s_b3,s_b4; } S_un_b;
  38                 struct { unsigned short s_w1,s_w2; } S_un_w;
  39                 unsigned long S_addr;
  40         } S_un;
  41 };
  42 #define s_addr  S_un.S_addr     /* can be used for most tcp & ip code */
  43 struct sockaddr_in
  44 {
  45     short                       sin_family;
  46     unsigned short      sin_port;
  47         struct in_addr  sin_addr;
  48     char                        sin_zero[8];
  49 };
  50 char *inet_ntoa(struct in_addr in);
  51 unsigned long inet_addr(const char *cp);
  52 #endif
  53 #endif  // BAN_TEST
  54
  55 #include "quakedef.h"
  56 #include "net_dgrm.h"
  57
  58 // these two macros are to make the code more readable
  59 #define sfunc   net_landrivers[sock->landriver]
  60 #define dfunc   net_landrivers[net_landriverlevel]
  61
  62 static int net_landriverlevel;
  63
  64 /* statistic counters */
  65 int     packetsSent = 0;
  66 int     packetsReSent = 0;
  67 int packetsReceived = 0;
  68 int receivedDuplicateCount = 0;
  69 int shortPacketCount = 0;
  70 int droppedDatagrams;
  71
  72 static int myDriverLevel;
  73
  74 struct
  75 {
  76         unsigned int    length;
  77         unsigned int    sequence;
  78         byte                    data[MAX_DATAGRAM];
  79 } packetBuffer;
  80
  81
  82 //#ifdef DEBUG
  83 char *StrAddr (struct qsockaddr *addr)
  84 {
  85         static char buf[34];
  86         byte *p = (byte *)addr;
  87         int n;
  88
  89         for (n = 0; n < 16; n++)
  90                 sprintf (buf + n * 2, "%02x", *p++);
  91         return buf;
  92 }
  93 //#endif
  94
  95
  96 #ifdef BAN_TEST
  97 unsigned long banAddr = 0x00000000;
  98 unsigned long banMask = 0xffffffff;
  99
 100 void NET_Ban_f (void)
 101 {
 102         char    addrStr [32];
 103         char    maskStr [32];
 104         void    (*print) (char *fmt, ...);
 105
 106         if (cmd_source == src_command)
 107         {
 108                 if (!sv.active)
 109                 {
 110                         Cmd_ForwardToServer ();
 111                         return;
 112                 }
 113                 print = Con_Printf;
 114         }
 115         else
 116         {
 117                 if (pr_global_struct->deathmatch)
 118                         return;
 119                 print = SV_ClientPrintf;
 120         }
 121
 122         switch (Cmd_Argc ())
 123         {
 124                 case 1:
 125                         if (((struct in_addr *)&banAddr)->s_addr)
 126                         {
 127                                 strcpy(addrStr, inet_ntoa(*(struct in_addr *)&banAddr));
 128                                 strcpy(maskStr, inet_ntoa(*(struct in_addr *)&banMask));
 129                                 print("Banning %s [%s]\n", addrStr, maskStr);
 130                         }
 131                         else
 132                                 print("Banning not active\n");
 133                         break;
 134
 135                 case 2:
 136                         if (Q_strcasecmp(Cmd_Argv(1), "off") == 0)
 137                                 banAddr = 0x00000000;
 138                         else
 139                                 banAddr = inet_addr(Cmd_Argv(1));
 140                         banMask = 0xffffffff;
 141                         break;
 142
 143                 case 3:
 144                         banAddr = inet_addr(Cmd_Argv(1));
 145                         banMask = inet_addr(Cmd_Argv(2));
 146                         break;
 147
 148                 default:
 149                         print("BAN ip_address [mask]\n");
 150                         break;
 151         }
 152 }
 153 #endif
 154
 155
 156 int Datagram_SendMessage (qsocket_t *sock, sizebuf_t *data)
 157 {
 158         unsigned int    packetLen;
 159         unsigned int    dataLen;
 160         unsigned int    eom;
 161
 162 #ifdef DEBUG
 163         if (data->cursize == 0)
 164                 Sys_Error("Datagram_SendMessage: zero length message\n");
 165
 166         if (data->cursize > NET_MAXMESSAGE)
 167                 Sys_Error("Datagram_SendMessage: message too big %u\n", data->cursize);
 168
 169         if (sock->canSend == false)
 170                 Sys_Error("SendMessage: called with canSend == false\n");
 171 #endif
 172
 173         memcpy(sock->sendMessage, data->data, data->cursize);
 174         sock->sendMessageLength = data->cursize;
 175
 176         if (data->cursize <= MAX_DATAGRAM)
 177         {
 178                 dataLen = data->cursize;
 179                 eom = NETFLAG_EOM;
 180         }
 181         else
 182         {
 183                 dataLen = MAX_DATAGRAM;
 184                 eom = 0;
 185         }
 186         packetLen = NET_HEADERSIZE + dataLen;
 187
 188         packetBuffer.length = BigLong(packetLen | (NETFLAG_DATA | eom));
 189         packetBuffer.sequence = BigLong(sock->sendSequence++);
 190         memcpy (packetBuffer.data, sock->sendMessage, dataLen);
 191
 192         sock->canSend = false;
 193
 194         if (sfunc.Write (sock->socket, (byte *)&packetBuffer, packetLen, &sock->addr) == -1)
 195                 return -1;
 196
 197         sock->lastSendTime = net_time;
 198         packetsSent++;
 199         return 1;
 200 }
 201
 202
 203 int SendMessageNext (qsocket_t *sock)
 204 {
 205         unsigned int    packetLen;
 206         unsigned int    dataLen;
 207         unsigned int    eom;
 208
 209         if (sock->sendMessageLength <= MAX_DATAGRAM)
 210         {
 211                 dataLen = sock->sendMessageLength;
 212                 eom = NETFLAG_EOM;
 213         }
 214         else
 215         {
 216                 dataLen = MAX_DATAGRAM;
 217                 eom = 0;
 218         }
 219         packetLen = NET_HEADERSIZE + dataLen;
 220
 221         packetBuffer.length = BigLong(packetLen | (NETFLAG_DATA | eom));
 222         packetBuffer.sequence = BigLong(sock->sendSequence++);
 223         memcpy (packetBuffer.data, sock->sendMessage, dataLen);
 224
 225         sock->sendNext = false;
 226
 227         if (sfunc.Write (sock->socket, (byte *)&packetBuffer, packetLen, &sock->addr) == -1)
 228                 return -1;
 229
 230         sock->lastSendTime = net_time;
 231         packetsSent++;
 232         return 1;
 233 }
 234
 235
 236 int ReSendMessage (qsocket_t *sock)
 237 {
 238         unsigned int    packetLen;
 239         unsigned int    dataLen;
 240         unsigned int    eom;
 241
 242         if (sock->sendMessageLength <= MAX_DATAGRAM)
 243         {
 244                 dataLen = sock->sendMessageLength;
 245                 eom = NETFLAG_EOM;
 246         }
 247         else
 248         {
 249                 dataLen = MAX_DATAGRAM;
 250                 eom = 0;
 251         }
 252         packetLen = NET_HEADERSIZE + dataLen;
 253
 254         packetBuffer.length = BigLong(packetLen | (NETFLAG_DATA | eom));
 255         packetBuffer.sequence = BigLong(sock->sendSequence - 1);
 256         memcpy (packetBuffer.data, sock->sendMessage, dataLen);
 257
 258         sock->sendNext = false;
 259
 260         if (sfunc.Write (sock->socket, (byte *)&packetBuffer, packetLen, &sock->addr) == -1)
 261                 return -1;
 262
 263         sock->lastSendTime = net_time;
 264         packetsReSent++;
 265         return 1;
 266 }
 267
 268
 269 qboolean Datagram_CanSendMessage (qsocket_t *sock)
 270 {
 271         if (sock->sendNext)
 272                 SendMessageNext (sock);
 273
 274         return sock->canSend;
 275 }
 276
 277
 278 qboolean Datagram_CanSendUnreliableMessage (qsocket_t *sock)
 279 {
 280         return true;
 281 }
 282
 283
 284 int Datagram_SendUnreliableMessage (qsocket_t *sock, sizebuf_t *data)
 285 {
 286         int     packetLen;
 287
 288 #ifdef DEBUG
 289         if (data->cursize == 0)
 290                 Sys_Error("Datagram_SendUnreliableMessage: zero length message\n");
 291
 292         if (data->cursize > MAX_DATAGRAM)
 293                 Sys_Error("Datagram_SendUnreliableMessage: message too big %u\n", data->cursize);
 294 #endif
 295
 296         packetLen = NET_HEADERSIZE + data->cursize;
 297
 298         packetBuffer.length = BigLong(packetLen | NETFLAG_UNRELIABLE);
 299         packetBuffer.sequence = BigLong(sock->unreliableSendSequence++);
 300         memcpy (packetBuffer.data, data->data, data->cursize);
 301
 302         if (sfunc.Write (sock->socket, (byte *)&packetBuffer, packetLen, &sock->addr) == -1)
 303                 return -1;
 304
 305         packetsSent++;
 306         return 1;
 307 }
 308
 309
 310 int     Datagram_GetMessage (qsocket_t *sock)
 311 {
 312         unsigned int    length;
 313         unsigned int    flags;
 314         int                             ret = 0;
 315         struct qsockaddr readaddr;
 316         unsigned int    sequence;
 317         unsigned int    count;
 318
 319         if (!sock->canSend)
 320                 if ((net_time - sock->lastSendTime) > 1.0)
 321                         ReSendMessage (sock);
 322
 323         while(1)
 324         {
 325                 length = sfunc.Read (sock->socket, (byte *)&packetBuffer, NET_DATAGRAMSIZE, &readaddr);
 326
 327 //      if ((rand() & 255) > 220)
 328 //              continue;
 329
 330                 if (length == 0)
 331                         break;
 332
 333                 if (length == -1)
 334                 {
 335                         Con_Printf("Read error\n");
 336                         return -1;
 337                 }
 338
 339                 if (sfunc.AddrCompare(&readaddr, &sock->addr) != 0)
 340                 {
 341 #ifdef DEBUG
 342                         Con_DPrintf("Forged packet received\n");
 343                         Con_DPrintf("Expected: %s\n", StrAddr (&sock->addr));
 344                         Con_DPrintf("Received: %s\n", StrAddr (&readaddr));
 345 #endif
 346                         continue;
 347                 }
 348
 349                 if (length < NET_HEADERSIZE)
 350                 {
 351                         shortPacketCount++;
 352                         continue;
 353                 }
 354
 355                 length = BigLong(packetBuffer.length);
 356                 flags = length & (~NETFLAG_LENGTH_MASK);
 357                 length &= NETFLAG_LENGTH_MASK;
 358
 359                 if (flags & NETFLAG_CTL)
 360                         continue;
 361
 362                 sequence = BigLong(packetBuffer.sequence);
 363                 packetsReceived++;
 364
 365                 if (flags & NETFLAG_UNRELIABLE)
 366                 {
 367                         if (sequence < sock->unreliableReceiveSequence)
 368                         {
 369                                 Con_DPrintf("Got a stale datagram\n");
 370                                 ret = 0;
 371                                 break;
 372                         }
 373                         if (sequence != sock->unreliableReceiveSequence)
 374                         {
 375                                 count = sequence - sock->unreliableReceiveSequence;
 376                                 droppedDatagrams += count;
 377                                 Con_DPrintf("Dropped %u datagram(s)\n", count);
 378                         }
 379                         sock->unreliableReceiveSequence = sequence + 1;
 380
 381                         length -= NET_HEADERSIZE;
 382
 383                         SZ_Clear (&net_message);
 384                         SZ_Write (&net_message, packetBuffer.data, length);
 385
 386                         ret = 2;
 387                         break;
 388                 }
 389
 390                 if (flags & NETFLAG_ACK)
 391                 {
 392                         if (sequence != (sock->sendSequence - 1))
 393                         {
 394                                 Con_DPrintf("Stale ACK received\n");
 395                                 continue;
 396                         }
 397                         if (sequence == sock->ackSequence)
 398                         {
 399                                 sock->ackSequence++;
 400                                 if (sock->ackSequence != sock->sendSequence)
 401                                         Con_DPrintf("ack sequencing error\n");
 402                         }
 403                         else
 404                         {
 405                                 Con_DPrintf("Duplicate ACK received\n");
 406                                 continue;
 407                         }
 408                         sock->sendMessageLength -= MAX_DATAGRAM;
 409                         if (sock->sendMessageLength > 0)
 410                         {
 411                                 memcpy(sock->sendMessage, sock->sendMessage+MAX_DATAGRAM, sock->sendMessageLength);
 412                                 sock->sendNext = true;
 413                         }
 414                         else
 415                         {
 416                                 sock->sendMessageLength = 0;
 417                                 sock->canSend = true;
 418                         }
 419                         continue;
 420                 }
 421
 422                 if (flags & NETFLAG_DATA)
 423                 {
 424                         packetBuffer.length = BigLong(NET_HEADERSIZE | NETFLAG_ACK);
 425                         packetBuffer.sequence = BigLong(sequence);
 426                         sfunc.Write (sock->socket, (byte *)&packetBuffer, NET_HEADERSIZE, &readaddr);
 427
 428                         if (sequence != sock->receiveSequence)
 429                         {
 430                                 receivedDuplicateCount++;
 431                                 continue;
 432                         }
 433                         sock->receiveSequence++;
 434
 435                         length -= NET_HEADERSIZE;
 436
 437                         if (flags & NETFLAG_EOM)
 438                         {
 439                                 SZ_Clear(&net_message);
 440                                 SZ_Write(&net_message, sock->receiveMessage, sock->receiveMessageLength);
 441                                 SZ_Write(&net_message, packetBuffer.data, length);
 442                                 sock->receiveMessageLength = 0;
 443
 444                                 ret = 1;
 445                                 break;
 446                         }
 447
 448                         memcpy(sock->receiveMessage + sock->receiveMessageLength, packetBuffer.data, length);
 449                         sock->receiveMessageLength += length;
 450                         continue;
 451                 }
 452         }
 453
 454         if (sock->sendNext)
 455                 SendMessageNext (sock);
 456
 457         return ret;
 458 }
 459
 460
 461 void PrintStats(qsocket_t *s)
 462 {
 463         Con_Printf("canSend = %4u   \n", s->canSend);
 464         Con_Printf("sendSeq = %4u   ", s->sendSequence);
 465         Con_Printf("recvSeq = %4u   \n", s->receiveSequence);
 466         Con_Printf("\n");
 467 }
 468
 469 void NET_Stats_f (void)
 470 {
 471         qsocket_t       *s;
 472
 473         if (Cmd_Argc () == 1)
 474         {
 475                 Con_Printf("unreliable messages sent   = %i\n", unreliableMessagesSent);
 476                 Con_Printf("unreliable messages recv   = %i\n", unreliableMessagesReceived);
 477                 Con_Printf("reliable messages sent     = %i\n", messagesSent);
 478                 Con_Printf("reliable messages received = %i\n", messagesReceived);
 479                 Con_Printf("packetsSent                = %i\n", packetsSent);
 480                 Con_Printf("packetsReSent              = %i\n", packetsReSent);
 481                 Con_Printf("packetsReceived            = %i\n", packetsReceived);
 482                 Con_Printf("receivedDuplicateCount     = %i\n", receivedDuplicateCount);
 483                 Con_Printf("shortPacketCount           = %i\n", shortPacketCount);
 484                 Con_Printf("droppedDatagrams           = %i\n", droppedDatagrams);
 485         }
 486         else if (strcmp(Cmd_Argv(1), "*") == 0)
 487         {
 488                 for (s = net_activeSockets; s; s = s->next)
 489                         PrintStats(s);
 490                 for (s = net_freeSockets; s; s = s->next)
 491                         PrintStats(s);
 492         }
 493         else
 494         {
 495                 for (s = net_activeSockets; s; s = s->next)
 496                         if (Q_strcasecmp(Cmd_Argv(1), s->address) == 0)
 497                                 break;
 498                 if (s == NULL)
 499                         for (s = net_freeSockets; s; s = s->next)
 500                                 if (Q_strcasecmp(Cmd_Argv(1), s->address) == 0)
 501                                         break;
 502                 if (s == NULL)
 503                         return;
 504                 PrintStats(s);
 505         }
 506 }
 507
 508
 509 static qboolean testInProgress = false;
 510 static int              testPollCount;
 511 static int              testDriver;
 512 static int              testSocket;
 513
 514 static void Test_Poll(void);
 515 PollProcedure   testPollProcedure = {NULL, 0.0, Test_Poll};
 516
 517 static void Test_Poll(void)
 518 {
 519         struct qsockaddr clientaddr;
 520         int             control;
 521         int             len;
 522         char    name[32];
 523         char    address[64];
 524         int             colors;
 525         int             frags;
 526         int             connectTime;
 527         byte    playerNumber;
 528
 529         net_landriverlevel = testDriver;
 530
 531         while (1)
 532         {
 533                 len = dfunc.Read (testSocket, net_message.data, net_message.maxsize, &clientaddr);
 534                 if (len < sizeof(int))
 535                         break;
 536
 537                 net_message.cursize = len;
 538
 539                 MSG_BeginReading ();
 540                 control = BigLong(*((int *)net_message.data));
 541                 MSG_ReadLong();
 542                 if (control == -1)
 543                         break;
 544                 if ((control & (~NETFLAG_LENGTH_MASK)) !=  NETFLAG_CTL)
 545                         break;
 546                 if ((control & NETFLAG_LENGTH_MASK) != len)
 547                         break;
 548
 549                 if (MSG_ReadByte() != CCREP_PLAYER_INFO)
 550                         Sys_Error("Unexpected repsonse to Player Info request\n");
 551
 552                 playerNumber = MSG_ReadByte();
 553                 strcpy(name, MSG_ReadString());
 554                 colors = MSG_ReadLong();
 555                 frags = MSG_ReadLong();
 556                 connectTime = MSG_ReadLong();
 557                 strcpy(address, MSG_ReadString());
 558
 559                 Con_Printf("%s\n  frags:%3i  colors:%u %u  time:%u\n  %s\n", name, frags, colors >> 4, colors & 0x0f, connectTime / 60, address);
 560         }
 561
 562         testPollCount--;
 563         if (testPollCount)
 564         {
 565                 SchedulePollProcedure(&testPollProcedure, 0.1);
 566         }
 567         else
 568         {
 569                 dfunc.CloseSocket(testSocket);
 570                 testInProgress = false;
 571         }
 572 }
 573
 574 static void Test_f (void)
 575 {
 576         char    *host;
 577         int             n;
 578         int             max = MAX_SCOREBOARD;
 579         struct qsockaddr sendaddr;
 580
 581         if (testInProgress)
 582                 return;
 583
 584         host = Cmd_Argv (1);
 585
 586         if (host && hostCacheCount)
 587         {
 588                 for (n = 0; n < hostCacheCount; n++)
 589                         if (Q_strcasecmp (host, hostcache[n].name) == 0)
 590                         {
 591                                 if (hostcache[n].driver != myDriverLevel)
 592                                         continue;
 593                                 net_landriverlevel = hostcache[n].ldriver;
 594                                 max = hostcache[n].maxusers;
 595                                 memcpy(&sendaddr, &hostcache[n].addr, sizeof(struct qsockaddr));
 596                                 break;
 597                         }
 598                 if (n < hostCacheCount)
 599                         goto JustDoIt;
 600         }
 601
 602         for (net_landriverlevel = 0; net_landriverlevel < net_numlandrivers; net_landriverlevel++)
 603         {
 604                 if (!net_landrivers[net_landriverlevel].initialized)
 605                         continue;
 606
 607                 // see if we can resolve the host name
 608                 if (dfunc.GetAddrFromName(host, &sendaddr) != -1)
 609                         break;
 610         }
 611         if (net_landriverlevel == net_numlandrivers)
 612                 return;
 613
 614 JustDoIt:
 615         testSocket = dfunc.OpenSocket(0);
 616         if (testSocket == -1)
 617                 return;
 618
 619         testInProgress = true;
 620         testPollCount = 20;
 621         testDriver = net_landriverlevel;
 622
 623         for (n = 0; n < max; n++)
 624         {
 625                 SZ_Clear(&net_message);
 626                 // save space for the header, filled in later
 627                 MSG_WriteLong(&net_message, 0);
 628                 MSG_WriteByte(&net_message, CCREQ_PLAYER_INFO);
 629                 MSG_WriteByte(&net_message, n);
 630                 *((int *)net_message.data) = BigLong(NETFLAG_CTL |      (net_message.cursize & NETFLAG_LENGTH_MASK));
 631                 dfunc.Write (testSocket, net_message.data, net_message.cursize, &sendaddr);
 632         }
 633         SZ_Clear(&net_message);
 634         SchedulePollProcedure(&testPollProcedure, 0.1);
 635 }
 636
 637
 638 static qboolean test2InProgress = false;
 639 static int              test2Driver;
 640 static int              test2Socket;
 641
 642 static void Test2_Poll(void);
 643 PollProcedure   test2PollProcedure = {NULL, 0.0, Test2_Poll};
 644
 645 static void Test2_Poll(void)
 646 {
 647         struct qsockaddr clientaddr;
 648         int             control;
 649         int             len;
 650         char    name[256];
 651         char    value[256];
 652
 653         net_landriverlevel = test2Driver;
 654         name[0] = 0;
 655
 656         len = dfunc.Read (test2Socket, net_message.data, net_message.maxsize, &clientaddr);
 657         if (len < sizeof(int))
 658                 goto Reschedule;
 659
 660         net_message.cursize = len;
 661
 662         MSG_BeginReading ();
 663         control = BigLong(*((int *)net_message.data));
 664         MSG_ReadLong();
 665         if (control == -1)
 666                 goto Error;
 667         if ((control & (~NETFLAG_LENGTH_MASK)) !=  NETFLAG_CTL)
 668                 goto Error;
 669         if ((control & NETFLAG_LENGTH_MASK) != len)
 670                 goto Error;
 671
 672         if (MSG_ReadByte() != CCREP_RULE_INFO)
 673                 goto Error;
 674
 675         strcpy(name, MSG_ReadString());
 676         if (name[0] == 0)
 677                 goto Done;
 678         strcpy(value, MSG_ReadString());
 679
 680         Con_Printf("%-16.16s  %-16.16s\n", name, value);
 681
 682         SZ_Clear(&net_message);
 683         // save space for the header, filled in later
 684         MSG_WriteLong(&net_message, 0);
 685         MSG_WriteByte(&net_message, CCREQ_RULE_INFO);
 686         MSG_WriteString(&net_message, name);
 687         *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 688         dfunc.Write (test2Socket, net_message.data, net_message.cursize, &clientaddr);
 689         SZ_Clear(&net_message);
 690
 691 Reschedule:
 692         SchedulePollProcedure(&test2PollProcedure, 0.05);
 693         return;
 694
 695 Error:
 696         Con_Printf("Unexpected repsonse to Rule Info request\n");
 697 Done:
 698         dfunc.CloseSocket(test2Socket);
 699         test2InProgress = false;
 700         return;
 701 }
 702
 703 static void Test2_f (void)
 704 {
 705         char    *host;
 706         int             n;
 707         struct qsockaddr sendaddr;
 708
 709         if (test2InProgress)
 710                 return;
 711
 712         host = Cmd_Argv (1);
 713
 714         if (host && hostCacheCount)
 715         {
 716                 for (n = 0; n < hostCacheCount; n++)
 717                         if (Q_strcasecmp (host, hostcache[n].name) == 0)
 718                         {
 719                                 if (hostcache[n].driver != myDriverLevel)
 720                                         continue;
 721                                 net_landriverlevel = hostcache[n].ldriver;
 722                                 memcpy(&sendaddr, &hostcache[n].addr, sizeof(struct qsockaddr));
 723                                 break;
 724                         }
 725                 if (n < hostCacheCount)
 726                         goto JustDoIt;
 727         }
 728
 729         for (net_landriverlevel = 0; net_landriverlevel < net_numlandrivers; net_landriverlevel++)
 730         {
 731                 if (!net_landrivers[net_landriverlevel].initialized)
 732                         continue;
 733
 734                 // see if we can resolve the host name
 735                 if (dfunc.GetAddrFromName(host, &sendaddr) != -1)
 736                         break;
 737         }
 738         if (net_landriverlevel == net_numlandrivers)
 739                 return;
 740
 741 JustDoIt:
 742         test2Socket = dfunc.OpenSocket(0);
 743         if (test2Socket == -1)
 744                 return;
 745
 746         test2InProgress = true;
 747         test2Driver = net_landriverlevel;
 748
 749         SZ_Clear(&net_message);
 750         // save space for the header, filled in later
 751         MSG_WriteLong(&net_message, 0);
 752         MSG_WriteByte(&net_message, CCREQ_RULE_INFO);
 753         MSG_WriteString(&net_message, "");
 754         *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 755         dfunc.Write (test2Socket, net_message.data, net_message.cursize, &sendaddr);
 756         SZ_Clear(&net_message);
 757         SchedulePollProcedure(&test2PollProcedure, 0.05);
 758 }
 759
 760
 761 int Datagram_Init (void)
 762 {
 763         int i;
 764         int csock;
 765
 766         myDriverLevel = net_driverlevel;
 767         Cmd_AddCommand ("net_stats", NET_Stats_f);
 768
 769         if (COM_CheckParm("-nolan"))
 770                 return -1;
 771
 772         for (i = 0; i < net_numlandrivers; i++)
 773                 {
 774                 csock = net_landrivers[i].Init ();
 775                 if (csock == -1)
 776                         continue;
 777                 net_landrivers[i].initialized = true;
 778                 net_landrivers[i].controlSock = csock;
 779                 }
 780
 781 #ifdef BAN_TEST
 782         Cmd_AddCommand ("ban", NET_Ban_f);
 783 #endif
 784         Cmd_AddCommand ("test", Test_f);
 785         Cmd_AddCommand ("test2", Test2_f);
 786
 787         return 0;
 788 }
 789
 790
 791 void Datagram_Shutdown (void)
 792 {
 793         int i;
 794
 795 //
 796 // shutdown the lan drivers
 797 //
 798         for (i = 0; i < net_numlandrivers; i++)
 799         {
 800                 if (net_landrivers[i].initialized)
 801                 {
 802                         net_landrivers[i].Shutdown ();
 803                         net_landrivers[i].initialized = false;
 804                 }
 805         }
 806 }
 807
 808
 809 void Datagram_Close (qsocket_t *sock)
 810 {
 811         sfunc.CloseSocket(sock->socket);
 812 }
 813
 814
 815 void Datagram_Listen (qboolean state)
 816 {
 817         int i;
 818
 819         for (i = 0; i < net_numlandrivers; i++)
 820                 if (net_landrivers[i].initialized)
 821                         net_landrivers[i].Listen (state);
 822 }
 823
 824
 825 static qsocket_t *_Datagram_CheckNewConnections (void)
 826 {
 827         struct qsockaddr clientaddr;
 828         struct qsockaddr newaddr;
 829         int                     newsock;
 830         int                     acceptsock;
 831         qsocket_t       *sock;
 832         qsocket_t       *s;
 833         int                     len;
 834         int                     command;
 835         int                     control;
 836         int                     ret;
 837
 838         acceptsock = dfunc.CheckNewConnections();
 839         if (acceptsock == -1)
 840                 return NULL;
 841
 842         SZ_Clear(&net_message);
 843
 844         len = dfunc.Read (acceptsock, net_message.data, net_message.maxsize, &clientaddr);
 845         if (len < sizeof(int))
 846                 return NULL;
 847         net_message.cursize = len;
 848
 849         MSG_BeginReading ();
 850         control = BigLong(*((int *)net_message.data));
 851         MSG_ReadLong();
 852         if (control == -1)
 853                 return NULL;
 854         if ((control & (~NETFLAG_LENGTH_MASK)) !=  NETFLAG_CTL)
 855                 return NULL;
 856         if ((control & NETFLAG_LENGTH_MASK) != len)
 857                 return NULL;
 858
 859         command = MSG_ReadByte();
 860         if (command == CCREQ_SERVER_INFO)
 861         {
 862                 if (strcmp(MSG_ReadString(), "QUAKE") != 0)
 863                         return NULL;
 864
 865                 SZ_Clear(&net_message);
 866                 // save space for the header, filled in later
 867                 MSG_WriteLong(&net_message, 0);
 868                 MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
 869                 dfunc.GetSocketAddr(acceptsock, &newaddr);
 870                 MSG_WriteString(&net_message, dfunc.AddrToString(&newaddr));
 871                 MSG_WriteString(&net_message, hostname.string);
 872                 MSG_WriteString(&net_message, sv.name);
 873                 MSG_WriteByte(&net_message, net_activeconnections);
 874                 MSG_WriteByte(&net_message, svs.maxclients);
 875                 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
 876                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 877                 dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
 878                 SZ_Clear(&net_message);
 879                 return NULL;
 880         }
 881
 882         if (command == CCREQ_PLAYER_INFO)
 883         {
 884                 int                     playerNumber;
 885                 int                     activeNumber;
 886                 int                     clientNumber;
 887                 client_t        *client;
 888
 889                 playerNumber = MSG_ReadByte();
 890                 activeNumber = -1;
 891                 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
 892                 {
 893                         if (client->active)
 894                         {
 895                                 activeNumber++;
 896                                 if (activeNumber == playerNumber)
 897                                         break;
 898                         }
 899                 }
 900                 if (clientNumber == svs.maxclients)
 901                         return NULL;
 902
 903                 SZ_Clear(&net_message);
 904                 // save space for the header, filled in later
 905                 MSG_WriteLong(&net_message, 0);
 906                 MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
 907                 MSG_WriteByte(&net_message, playerNumber);
 908                 MSG_WriteString(&net_message, client->name);
 909                 MSG_WriteLong(&net_message, client->colors);
 910                 MSG_WriteLong(&net_message, (int)client->edict->v.frags);
 911                 MSG_WriteLong(&net_message, (int)(net_time - client->netconnection->connecttime));
 912                 MSG_WriteString(&net_message, client->netconnection->address);
 913                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 914                 dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
 915                 SZ_Clear(&net_message);
 916
 917                 return NULL;
 918         }
 919
 920         if (command == CCREQ_RULE_INFO)
 921         {
 922                 char    *prevCvarName;
 923                 cvar_t  *var;
 924
 925                 // find the search start location
 926                 prevCvarName = MSG_ReadString();
 927                 if (*prevCvarName)
 928                 {
 929                         var = Cvar_FindVar (prevCvarName);
 930                         if (!var)
 931                                 return NULL;
 932                         var = var->next;
 933                 }
 934                 else
 935                         var = cvar_vars;
 936
 937                 // search for the next server cvar
 938                 while (var)
 939                 {
 940                         if (var->flags & CVAR_NOTIFY)
 941                                 break;
 942                         var = var->next;
 943                 }
 944
 945                 // send the response
 946
 947                 SZ_Clear(&net_message);
 948                 // save space for the header, filled in later
 949                 MSG_WriteLong(&net_message, 0);
 950                 MSG_WriteByte(&net_message, CCREP_RULE_INFO);
 951                 if (var)
 952                 {
 953                         MSG_WriteString(&net_message, var->name);
 954                         MSG_WriteString(&net_message, var->string);
 955                 }
 956                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 957                 dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
 958                 SZ_Clear(&net_message);
 959
 960                 return NULL;
 961         }
 962
 963         if (command != CCREQ_CONNECT)
 964                 return NULL;
 965
 966         if (strcmp(MSG_ReadString(), "QUAKE") != 0)
 967                 return NULL;
 968
 969         if (MSG_ReadByte() != NET_PROTOCOL_VERSION)
 970         {
 971                 SZ_Clear(&net_message);
 972                 // save space for the header, filled in later
 973                 MSG_WriteLong(&net_message, 0);
 974                 MSG_WriteByte(&net_message, CCREP_REJECT);
 975                 MSG_WriteString(&net_message, "Incompatible version.\n");
 976                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 977                 dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
 978                 SZ_Clear(&net_message);
 979                 return NULL;
 980         }
 981
 982 #ifdef BAN_TEST
 983         // check for a ban
 984         if (clientaddr.sa_family == AF_INET)
 985         {
 986                 unsigned long testAddr;
 987                 testAddr = ((struct sockaddr_in *)&clientaddr)->sin_addr.s_addr;
 988                 if ((testAddr & banMask) == banAddr)
 989                 {
 990                         SZ_Clear(&net_message);
 991                         // save space for the header, filled in later
 992                         MSG_WriteLong(&net_message, 0);
 993                         MSG_WriteByte(&net_message, CCREP_REJECT);
 994                         MSG_WriteString(&net_message, "You have been banned.\n");
 995                         *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
 996                         dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
 997                         SZ_Clear(&net_message);
 998                         return NULL;
 999                 }
1000         }
1001 #endif
1002
1003         // see if this guy is already connected
1004         for (s = net_activeSockets; s; s = s->next)
1005         {
1006                 if (s->driver != net_driverlevel)
1007                         continue;
1008                 ret = dfunc.AddrCompare(&clientaddr, &s->addr);
1009                 if (ret >= 0)
1010                 {
1011                         // is this a duplicate connection reqeust?
1012                         if (ret == 0 && net_time - s->connecttime < 2.0)
1013                         {
1014                                 // yes, so send a duplicate reply
1015                                 SZ_Clear(&net_message);
1016                                 // save space for the header, filled in later
1017                                 MSG_WriteLong(&net_message, 0);
1018                                 MSG_WriteByte(&net_message, CCREP_ACCEPT);
1019                                 dfunc.GetSocketAddr(s->socket, &newaddr);
1020                                 MSG_WriteLong(&net_message, dfunc.GetSocketPort(&newaddr));
1021                                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1022                                 dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
1023                                 SZ_Clear(&net_message);
1024                                 return NULL;
1025                         }
1026                         // it's somebody coming back in from a crash/disconnect
1027                         // so close the old qsocket and let their retry get them back in
1028                         NET_Close(s);
1029                         return NULL;
1030                 }
1031         }
1032
1033         // allocate a QSocket
1034         sock = NET_NewQSocket ();
1035         if (sock == NULL)
1036         {
1037                 // no room; try to let him know
1038                 SZ_Clear(&net_message);
1039                 // save space for the header, filled in later
1040                 MSG_WriteLong(&net_message, 0);
1041                 MSG_WriteByte(&net_message, CCREP_REJECT);
1042                 MSG_WriteString(&net_message, "Server is full.\n");
1043                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1044                 dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
1045                 SZ_Clear(&net_message);
1046                 return NULL;
1047         }
1048
1049         // allocate a network socket
1050         newsock = dfunc.OpenSocket(0);
1051         if (newsock == -1)
1052         {
1053                 NET_FreeQSocket(sock);
1054                 return NULL;
1055         }
1056
1057         // connect to the client
1058         if (dfunc.Connect (newsock, &clientaddr) == -1)
1059         {
1060                 dfunc.CloseSocket(newsock);
1061                 NET_FreeQSocket(sock);
1062                 return NULL;
1063         }
1064
1065         // everything is allocated, just fill in the details
1066         sock->socket = newsock;
1067         sock->landriver = net_landriverlevel;
1068         sock->addr = clientaddr;
1069         strcpy(sock->address, dfunc.AddrToString(&clientaddr));
1070
1071         // send him back the info about the server connection he has been allocated
1072         SZ_Clear(&net_message);
1073         // save space for the header, filled in later
1074         MSG_WriteLong(&net_message, 0);
1075         MSG_WriteByte(&net_message, CCREP_ACCEPT);
1076         dfunc.GetSocketAddr(newsock, &newaddr);
1077         MSG_WriteLong(&net_message, dfunc.GetSocketPort(&newaddr));
1078 //      MSG_WriteString(&net_message, dfunc.AddrToString(&newaddr));
1079         *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1080         dfunc.Write (acceptsock, net_message.data, net_message.cursize, &clientaddr);
1081         SZ_Clear(&net_message);
1082
1083         return sock;
1084 }
1085
1086 qsocket_t *Datagram_CheckNewConnections (void)
1087 {
1088         qsocket_t *ret = NULL;
1089
1090         for (net_landriverlevel = 0; net_landriverlevel < net_numlandrivers; net_landriverlevel++)
1091                 if (net_landrivers[net_landriverlevel].initialized)
1092                         if ((ret = _Datagram_CheckNewConnections ()) != NULL)
1093                                 break;
1094         return ret;
1095 }
1096
1097
1098 static void _Datagram_SearchForHosts (qboolean xmit)
1099 {
1100         int             ret;
1101         int             n;
1102         int             i;
1103         struct qsockaddr readaddr;
1104         struct qsockaddr myaddr;
1105         int             control;
1106
1107         dfunc.GetSocketAddr (dfunc.controlSock, &myaddr);
1108         if (xmit)
1109         {
1110                 SZ_Clear(&net_message);
1111                 // save space for the header, filled in later
1112                 MSG_WriteLong(&net_message, 0);
1113                 MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
1114                 MSG_WriteString(&net_message, "QUAKE");
1115                 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1116                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1117                 dfunc.Broadcast(dfunc.controlSock, net_message.data, net_message.cursize);
1118                 SZ_Clear(&net_message);
1119         }
1120
1121         while ((ret = dfunc.Read (dfunc.controlSock, net_message.data, net_message.maxsize, &readaddr)) > 0)
1122         {
1123                 if (ret < sizeof(int))
1124                         continue;
1125                 net_message.cursize = ret;
1126
1127                 // don't answer our own query
1128                 if (dfunc.AddrCompare(&readaddr, &myaddr) >= 0)
1129                         continue;
1130
1131                 // is the cache full?
1132                 if (hostCacheCount == HOSTCACHESIZE)
1133                         continue;
1134
1135                 MSG_BeginReading ();
1136                 control = BigLong(*((int *)net_message.data));
1137                 MSG_ReadLong();
1138                 if (control == -1)
1139                         continue;
1140                 if ((control & (~NETFLAG_LENGTH_MASK)) !=  NETFLAG_CTL)
1141                         continue;
1142                 if ((control & NETFLAG_LENGTH_MASK) != ret)
1143                         continue;
1144
1145                 if (MSG_ReadByte() != CCREP_SERVER_INFO)
1146                         continue;
1147
1148                 dfunc.GetAddrFromName(MSG_ReadString(), &readaddr);
1149                 // search the cache for this server
1150                 for (n = 0; n < hostCacheCount; n++)
1151                         if (dfunc.AddrCompare(&readaddr, &hostcache[n].addr) == 0)
1152                                 break;
1153
1154                 // is it already there?
1155                 if (n < hostCacheCount)
1156                         continue;
1157
1158                 // add it
1159                 hostCacheCount++;
1160                 strcpy(hostcache[n].name, MSG_ReadString());
1161                 strcpy(hostcache[n].map, MSG_ReadString());
1162                 hostcache[n].users = MSG_ReadByte();
1163                 hostcache[n].maxusers = MSG_ReadByte();
1164                 if (MSG_ReadByte() != NET_PROTOCOL_VERSION)
1165                 {
1166                         strcpy(hostcache[n].cname, hostcache[n].name);
1167                         hostcache[n].cname[14] = 0;
1168                         strcpy(hostcache[n].name, "*");
1169                         strcat(hostcache[n].name, hostcache[n].cname);
1170                 }
1171                 memcpy(&hostcache[n].addr, &readaddr, sizeof(struct qsockaddr));
1172                 hostcache[n].driver = net_driverlevel;
1173                 hostcache[n].ldriver = net_landriverlevel;
1174                 strcpy(hostcache[n].cname, dfunc.AddrToString(&readaddr));
1175
1176                 // check for a name conflict
1177                 for (i = 0; i < hostCacheCount; i++)
1178                 {
1179                         if (i == n)
1180                                 continue;
1181                         if (Q_strcasecmp (hostcache[n].name, hostcache[i].name) == 0)
1182                         {
1183                                 i = strlen(hostcache[n].name);
1184                                 if (i < 15 && hostcache[n].name[i-1] > '8')
1185                                 {
1186                                         hostcache[n].name[i] = '0';
1187                                         hostcache[n].name[i+1] = 0;
1188                                 }
1189                                 else
1190                                         hostcache[n].name[i-1]++;
1191                                 i = -1;
1192                         }
1193                 }
1194         }
1195 }
1196
1197 void Datagram_SearchForHosts (qboolean xmit)
1198 {
1199         for (net_landriverlevel = 0; net_landriverlevel < net_numlandrivers; net_landriverlevel++)
1200         {
1201                 if (hostCacheCount == HOSTCACHESIZE)
1202                         break;
1203                 if (net_landrivers[net_landriverlevel].initialized)
1204                         _Datagram_SearchForHosts (xmit);
1205         }
1206 }
1207
1208
1209 static qsocket_t *_Datagram_Connect (char *host)
1210 {
1211         struct qsockaddr sendaddr;
1212         struct qsockaddr readaddr;
1213         qsocket_t       *sock;
1214         int                     newsock;
1215         int                     ret;
1216         int                     reps;
1217         double          start_time;
1218         int                     control;
1219         char            *reason;
1220
1221         // see if we can resolve the host name
1222         if (dfunc.GetAddrFromName(host, &sendaddr) == -1)
1223                 return NULL;
1224
1225         newsock = dfunc.OpenSocket (0);
1226         if (newsock == -1)
1227                 return NULL;
1228
1229         sock = NET_NewQSocket ();
1230         if (sock == NULL)
1231                 goto ErrorReturn2;
1232         sock->socket = newsock;
1233         sock->landriver = net_landriverlevel;
1234
1235         // connect to the host
1236         if (dfunc.Connect (newsock, &sendaddr) == -1)
1237                 goto ErrorReturn;
1238
1239         // send the connection request
1240         Con_Printf("trying...\n"); SCR_UpdateScreen ();
1241         start_time = net_time;
1242
1243         for (reps = 0; reps < 3; reps++)
1244         {
1245                 SZ_Clear(&net_message);
1246                 // save space for the header, filled in later
1247                 MSG_WriteLong(&net_message, 0);
1248                 MSG_WriteByte(&net_message, CCREQ_CONNECT);
1249                 MSG_WriteString(&net_message, "QUAKE");
1250                 MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
1251                 *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
1252                 dfunc.Write (newsock, net_message.data, net_message.cursize, &sendaddr);
1253                 SZ_Clear(&net_message);
1254                 do
1255                 {
1256                         ret = dfunc.Read (newsock, net_message.data, net_message.maxsize, &readaddr);
1257                         // if we got something, validate it
1258                         if (ret > 0)
1259                         {
1260                                 // is it from the right place?
1261                                 if (sfunc.AddrCompare(&readaddr, &sendaddr) != 0)
1262                                 {
1263 //#ifdef DEBUG
1264                                         Con_DPrintf("wrong reply address\n");
1265                                         Con_DPrintf("Expected: %s\n", StrAddr (&sendaddr));
1266                                         Con_DPrintf("Received: %s\n", StrAddr (&readaddr));
1267                                         SCR_UpdateScreen ();
1268 //#endif
1269                                         ret = 0;
1270                                         continue;
1271                                 }
1272
1273                                 if (ret < sizeof(int))
1274                                 {
1275                                         ret = 0;
1276                                         continue;
1277                                 }
1278
1279                                 net_message.cursize = ret;
1280                                 MSG_BeginReading ();
1281
1282                                 control = BigLong(*((int *)net_message.data));
1283                                 MSG_ReadLong();
1284                                 if (control == -1)
1285                                 {
1286                                         ret = 0;
1287                                         continue;
1288                                 }
1289                                 if ((control & (~NETFLAG_LENGTH_MASK)) !=  NETFLAG_CTL)
1290                                 {
1291                                         ret = 0;
1292                                         continue;
1293                                 }
1294                                 if ((control & NETFLAG_LENGTH_MASK) != ret)
1295                                 {
1296                                         ret = 0;
1297                                         continue;
1298                                 }
1299                         }
1300                 }
1301                 while (ret == 0 && (SetNetTime() - start_time) < 2.5);
1302                 if (ret)
1303                         break;
1304                 Con_Printf("still trying...\n"); SCR_UpdateScreen ();
1305                 start_time = SetNetTime();
1306         }
1307
1308         if (ret == 0)
1309         {
1310                 reason = "No Response";
1311                 Con_Printf("%s\n", reason);
1312                 strcpy(m_return_reason, reason);
1313                 goto ErrorReturn;
1314         }
1315
1316         if (ret == -1)
1317         {
1318                 reason = "Network Error";
1319                 Con_Printf("%s\n", reason);
1320                 strcpy(m_return_reason, reason);
1321                 goto ErrorReturn;
1322         }
1323
1324         ret = MSG_ReadByte();
1325         if (ret == CCREP_REJECT)
1326         {
1327                 reason = MSG_ReadString();
1328                 Con_Printf("%s", reason);
1329                 strncpy(m_return_reason, reason, 31);
1330                 goto ErrorReturn;
1331         }
1332
1333         if (ret == CCREP_ACCEPT)
1334         {
1335                 memcpy(&sock->addr, &sendaddr, sizeof(struct qsockaddr));
1336                 dfunc.SetSocketPort (&sock->addr, MSG_ReadLong());
1337         }
1338         else
1339         {
1340                 reason = "Bad Response";
1341                 Con_Printf("%s\n", reason);
1342                 strcpy(m_return_reason, reason);
1343                 goto ErrorReturn;
1344         }
1345
1346         dfunc.GetNameFromAddr (&sendaddr, sock->address);
1347
1348         Con_Printf ("Connection accepted\n");
1349         sock->lastMessageTime = SetNetTime();
1350
1351         // switch the connection to the specified address
1352         if (dfunc.Connect (newsock, &sock->addr) == -1)
1353         {
1354                 reason = "Connect to Game failed";
1355                 Con_Printf("%s\n", reason);
1356                 strcpy(m_return_reason, reason);
1357                 goto ErrorReturn;
1358         }
1359
1360         m_return_onerror = false;
1361         return sock;
1362
1363 ErrorReturn:
1364         NET_FreeQSocket(sock);
1365 ErrorReturn2:
1366         dfunc.CloseSocket(newsock);
1367         if (m_return_onerror)
1368         {
1369                 key_dest = key_menu;
1370                 m_state = m_return_state;
1371                 m_return_onerror = false;
1372         }
1373         return NULL;
1374 }
1375
1376 qsocket_t *Datagram_Connect (char *host)
1377 {
1378         qsocket_t *ret = NULL;
1379
1380         for (net_landriverlevel = 0; net_landriverlevel < net_numlandrivers; net_landriverlevel++)
1381                 if (net_landrivers[net_landriverlevel].initialized)
1382                         if ((ret = _Datagram_Connect (host)) != NULL)
1383                                 break;
1384         return ret;
1385 }