src/network/gtrack.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 2005.  All rights reserved.
   3  *
   4  * All source code herein is the property of Volition, Inc. You may not sell
   5  * or otherwise commercially exploit the source or things you created based on the
   6  * source.
   7  *
   8 */
   9
  10
  11 //Game Tracker client code
  12 /*
  13
  14   InitGameTracker(int game_type); //D3 or Freespace
  15
  16   //Call periodically so we can send our update, and make sure it is received
  17   IdleGameTracker();
  18
  19   StartTrackerGame(void *buffer)  //Call with a freespace_net_game_data or d3_net_game_data structure
  20   //Call with a freespace_net_game_data or d3_net_game_data structure
  21   //Updates our memory so when it is time, we send the latest game data
  22   UpdateGameData(gamedata);
  23
  24
  25   //Call to signify end of game
  26
  27   RequestGameList();//Sends a GNT_GAMELIST_REQ packet to the server.
  28
  29   game_list * GetGameList();//returns a pointer to a game_list struct
  30
  31 */
  32
  33
  34 #ifdef PLAT_UNIX
  35 #include <arpa/inet.h>
  36 #include <netinet/in.h>
  37 #include <errno.h>
  38 #include <netdb.h>
  39 #endif
  40
  41 #include "pstypes.h"
  42 #include "timer.h"
  43 #include "multi.h"
  44 #include "multi_pxo.h"
  45 #include "gtrack.h"
  46 #include "ptrack.h"
  47
  48
  49 // check structs for size compatibility
  50 SDL_COMPILE_TIME_ASSERT(game_packet_header, sizeof(game_packet_header) == 529);
  51 SDL_COMPILE_TIME_ASSERT(freespace2_net_game_data, sizeof(freespace2_net_game_data) == 120);
  52 SDL_COMPILE_TIME_ASSERT(game_list, sizeof(game_list) == 384);
  53 SDL_COMPILE_TIME_ASSERT(filter_game_list_struct, sizeof(filter_game_list_struct) == 40);
  54
  55
  56
  57 //Variables
  58 // SOCKET gamesock;
  59 struct sockaddr_in      gtrackaddr;
  60
  61 game_list GameBuffer[MAX_GAME_BUFFERS];
  62 int GameType;//d3 or fs
  63
  64 unsigned int LastTrackerUpdate;
  65 unsigned int LastSentToTracker;
  66 unsigned int TrackerAckdUs;
  67 unsigned int TrackerGameIsRunning;
  68
  69 game_packet_header TrackerGameData;
  70 game_packet_header GameListReq;
  71 game_packet_header TrackAckPacket;
  72 game_packet_header GameOverPacket;
  73
  74 #ifdef MAKE_FS1
  75 freespace_net_game_data         *FreeSpaceTrackerGameData;
  76 #else
  77 freespace2_net_game_data        *FreeSpace2TrackerGameData;
  78 #endif
  79
  80 //Start New 7-9-98
  81 unsigned int LastGameOverPacket;
  82 unsigned int FirstGameOverPacket;
  83
  84 int SendingGameOver;
  85 //End New 7-9-98
  86
  87
  88 static int SerializeGamePacket(const game_packet_header *gph, ubyte *data)
  89 {
  90         int packet_size = 0;
  91
  92         PXO_ADD_UINT(gph->len);
  93         PXO_ADD_DATA(gph->game_type);
  94         PXO_ADD_DATA(gph->junk); // not used, basically just padding for compatibility
  95         PXO_ADD_INT(gph->type);
  96         PXO_ADD_UINT(gph->sig);
  97
  98         switch (gph->type) {
  99                 // these have no other data
 100                 case GNT_CLIENT_ACK:
 101                 case GNT_GAMEOVER:
 102                         break;
 103
 104                 // this one may or may not have extra data
 105                 case GNT_GAMELIST_REQ: {
 106                         if (gph->len > GAME_HEADER_ONLY_SIZE) {
 107                                 SDL_assert(gph->len == (GAME_HEADER_ONLY_SIZE+sizeof(filter_game_list_struct)));
 108
 109                                 filter_game_list_struct *filter = (filter_game_list_struct *)&gph->data;
 110
 111                                 PXO_ADD_INT(filter->rank);
 112                                 PXO_ADD_DATA(filter->channel);
 113                                 PXO_ADD_DATA(filter->pad);              // for sizing, so gph->len will match
 114                         }
 115
 116                         break;
 117                 }
 118
 119                 case GNT_GAMEUPDATE: {
 120                         freespace2_net_game_data *game_data = (freespace2_net_game_data *)&gph->data;
 121
 122                         PXO_ADD_DATA(game_data->game_name);
 123                         PXO_ADD_INT(game_data->difficulty);
 124                         PXO_ADD_INT(game_data->type);
 125                         PXO_ADD_INT(game_data->state);
 126                         PXO_ADD_INT(game_data->max_players);
 127                         PXO_ADD_INT(game_data->current_num_players);
 128                         PXO_ADD_DATA(game_data->mission_name);
 129                         PXO_ADD_DATA(game_data->channel);
 130
 131                         break;
 132                 }
 133
 134                 case GNT_GAME_COUNT_REQ: {
 135                         SDL_assert(gph->len == (GAME_HEADER_ONLY_SIZE+sizeof(filter_game_list_struct)));
 136
 137                         filter_game_list_struct filter;
 138
 139                         SDL_zero(filter);
 140
 141                         memcpy(filter.channel, gph->data, sizeof(filter.channel));
 142
 143                         PXO_ADD_DATA(filter.channel);
 144
 145                         // add in junk data (ignored on server) to make packet size match
 146                         PXO_ADD_INT(filter.rank);
 147                         PXO_ADD_DATA(filter.pad);
 148
 149                         break;
 150                 }
 151
 152                 // we shouldn't be sending any other packet types
 153                 default:
 154                         Int3();
 155                         break;
 156         }
 157
 158         SDL_assert(packet_size >= (int)GAME_HEADER_ONLY_SIZE);
 159         SDL_assert(packet_size == (int)gph->len);
 160
 161         return packet_size;
 162 }
 163
 164 static void DeserializeGamePacket(const ubyte *data, const int data_size, game_packet_header *gph)
 165 {
 166         int offset = 0;
 167         int i;
 168
 169         memset(gph, 0, sizeof(game_packet_header));
 170
 171         // make sure we received a complete base packet
 172         if (data_size < (int)GAME_HEADER_ONLY_SIZE) {
 173                 gph->len = 0;
 174                 gph->type = 255;        // invalid = 0xff
 175
 176                 return;
 177         }
 178
 179         PXO_GET_UINT(gph->len);
 180         PXO_GET_DATA(gph->game_type);
 181         PXO_GET_DATA(gph->junk); // not used, basically just padding for compatibility
 182         PXO_GET_INT(gph->type);
 183         PXO_GET_UINT(gph->sig);
 184
 185         // sanity check data size to make sure we reveived all of the expected packet
 186         // (not exactly sure what -1 is for, but that's how it is later)
 187         if ((int)gph->len-1 > data_size) {
 188                 gph->len = 0;
 189                 gph->type = -1;
 190
 191                 return;
 192         }
 193
 194         switch (gph->type) {
 195                 case GNT_SERVER_ACK:
 196                         break;
 197
 198                 case GNT_GAMELIST_DATA: {
 199                         game_list *games = (game_list *)&gph->data;
 200
 201                         PXO_GET_DATA(games->game_type);
 202
 203                         for (i = 0; i < MAX_GAME_LISTS_PER_PACKET; i++) {
 204                                 PXO_GET_DATA(games->game_name[i]);
 205                         }
 206
 207                         PXO_GET_DATA(games->pad);       // padded bytes for alignment
 208
 209                         for (i = 0; i < MAX_GAME_LISTS_PER_PACKET; i++) {
 210                                 PXO_GET_UINT(games->game_server[i]);
 211                         }
 212
 213                         for (i = 0; i < MAX_GAME_LISTS_PER_PACKET; i++) {
 214                                 PXO_GET_USHORT(games->port[i]);
 215                         }
 216
 217                         break;
 218                 }
 219
 220                 case GNT_GAME_COUNT_DATA: {
 221                         int n_users = 0;
 222                         char channel[512];
 223
 224                         PXO_GET_INT(n_users);
 225
 226                         SDL_strlcpy(channel, (char *)(data+offset), SDL_arraysize(channel));
 227                         offset += (strlen(channel) + 1);
 228
 229                         memcpy(gph->data, &n_users, sizeof(int));
 230                         memcpy(gph->data+sizeof(int), channel, strlen(channel)+1);
 231
 232                         break;
 233                 }
 234
 235                 default:
 236                         break;
 237         }
 238
 239         //SDL_assert(offset == data_size);
 240 }
 241
 242
 243 int InitGameTrackerClient(int gametype)
 244 {
 245         struct sockaddr_in sockaddr;
 246         in_addr_t iaddr;
 247
 248         GameType = gametype;
 249         LastTrackerUpdate = 0;
 250         switch(gametype)
 251         {
 252         case GT_FREESPACE:
 253 #ifndef MAKE_FS1
 254                 Int3();
 255                 return 0;
 256 #else
 257                 TrackerGameData.len = GAME_HEADER_ONLY_SIZE+sizeof(freespace_net_game_data);
 258 #endif
 259                 break;
 260
 261         case GT_FREESPACE2:
 262 #ifdef MAKE_FS1
 263                 Int3();
 264                 return 0;
 265 #else
 266                 TrackerGameData.len = GAME_HEADER_ONLY_SIZE+sizeof(freespace2_net_game_data);
 267 #endif
 268                 break;
 269
 270         default:
 271                 Int3();
 272                 return 0;
 273         }
 274         TrackerGameData.game_type = (unsigned char)gametype;    //1==freespace (GT_FREESPACE), 2==D3, 3==tuberacer, etc.
 275         TrackerGameData.type = GNT_GAMEUPDATE;  //Used to specify what to do ie. Add a new net game (GNT_GAMESTARTED), remove a net game (game over), etc.
 276
 277 #ifdef MAKE_FS1
 278         FreeSpaceTrackerGameData = (freespace_net_game_data *)&TrackerGameData.data;
 279 #else
 280         FreeSpace2TrackerGameData = (freespace2_net_game_data *)&TrackerGameData.data;
 281 #endif
 282
 283         GameListReq.game_type = (unsigned char)gametype;
 284         GameListReq.type = GNT_GAMELIST_REQ;
 285         GameListReq.len = GAME_HEADER_ONLY_SIZE;
 286
 287         TrackAckPacket.game_type = (unsigned char)gametype;
 288         TrackAckPacket.len = GAME_HEADER_ONLY_SIZE;
 289         TrackAckPacket.type = GNT_CLIENT_ACK;
 290
 291         GameOverPacket.game_type = (unsigned char)gametype;
 292         GameOverPacket.len = GAME_HEADER_ONLY_SIZE;
 293         GameOverPacket.type = GNT_GAMEOVER;
 294
 295         // gamesock = socket(AF_INET,SOCK_DGRAM,0);
 296
 297         /*
 298         if ( gamesock == INVALID_SOCKET )
 299         {
 300                 printf("Unable to open a socket.\n");
 301                 return 0;
 302         }
 303         */
 304
 305         memset( &sockaddr, 0, sizeof(struct sockaddr_in) );
 306         sockaddr.sin_family = AF_INET;
 307         sockaddr.sin_addr.s_addr = INADDR_ANY;
 308         sockaddr.sin_port = 0;//htons(GAMEPORT);
 309
 310         /*
 311         if (SOCKET_ERROR==bind(gamesock, (struct sockaddr*)&sockaddr, sizeof (sockaddr)))
 312         {
 313                 printf("Unable to bind a socket.\n");
 314                 printf("WSAGetLastError() returned %d.\n",WSAGetLastError());
 315                 return 0;
 316         }
 317         */
 318
 319         iaddr = inet_addr ( Multi_options_g.game_tracker_ip );
 320         if ( iaddr == INADDR_NONE ) {
 321                 // first try and resolve by name
 322                 struct hostent *he;
 323                 he = gethostbyname( Multi_options_g.game_tracker_ip );
 324                 if(!he)
 325                 {
 326                         return 0;
 327                         /*
 328                         // try and resolve by address
 329                         unsigned int n_order = inet_addr(Multi_game_tracker_ip_address);
 330                         he = gethostbyaddr((char*)&n_order,4,PF_INET);
 331
 332                         if(!he){
 333                                 return 0;
 334                         }
 335                         */
 336                 }
 337
 338                 iaddr = ((in_addr *)(he->h_addr))->s_addr;
 339         }
 340
 341         // This would be a good place to resolve the IP based on a domain name
 342         gtrackaddr.sin_addr.s_addr = iaddr;
 343         gtrackaddr.sin_family = AF_INET;
 344         gtrackaddr.sin_port = htons( GAMEPORT );
 345
 346         //Start New 7-9-98
 347         SendingGameOver = 0;
 348         //End New 7-9-98
 349
 350         return 1;
 351 }
 352
 353 void IdleGameTracker()
 354 {
 355         fd_set read_fds;
 356         struct timeval timeout;
 357         ubyte packet_data[sizeof(game_packet_header)];
 358         int packet_length = 0;
 359
 360         PSNET_TOP_LAYER_PROCESS();
 361
 362         timeout.tv_sec=0;
 363         timeout.tv_usec=0;
 364         if((TrackerGameIsRunning) && ((timer_get_seconds()-LastTrackerUpdate)>TRACKER_UPDATE_INTERVAL) && !SendingGameOver)
 365         {
 366                 //Time to update the tracker again
 367                 packet_length = SerializeGamePacket(&TrackerGameData, packet_data);
 368                 SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 369                 TrackerAckdUs = 0;
 370                 LastTrackerUpdate = timer_get_seconds();
 371         }
 372         else if((TrackerGameIsRunning)&&(!TrackerAckdUs)&&((timer_get_milliseconds()-LastSentToTracker)>TRACKER_RESEND_TIME))
 373         {
 374                 //We still haven't been acked by the last packet and it's time to resend.
 375                 packet_length = SerializeGamePacket(&TrackerGameData, packet_data);
 376                 SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 377                 TrackerAckdUs = 0;
 378                 LastTrackerUpdate = timer_get_seconds();
 379                 LastSentToTracker = timer_get_milliseconds();
 380         }
 381
 382         //Start New 7-9-98
 383         if(SendingGameOver){
 384                 if((timer_get_milliseconds()-LastGameOverPacket)>TRACKER_RESEND_TIME){
 385                         //resend
 386                         packet_length = SerializeGamePacket(&GameOverPacket, packet_data);
 387                         LastGameOverPacket = timer_get_milliseconds();
 388                         SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 389                 }
 390                 /*
 391                 else if((timer_get_milliseconds()-FirstGameOverPacket)>NET_ACK_TIMEOUT) {
 392                         //Giving up, it timed out.
 393                         SendingGameOver = 2;
 394                 }
 395                 */
 396         }
 397         //End New 7-9-98
 398
 399         //Check for incoming
 400
 401         FD_ZERO(&read_fds);
 402         FD_SET(Unreliable_socket, &read_fds);
 403
 404         if(SELECT(Unreliable_socket+1,&read_fds,NULL,NULL,&timeout, PSNET_TYPE_GAME_TRACKER))
 405         {
 406                 unsigned int bytesin;
 407                 int addrsize;
 408                 struct sockaddr_in fromaddr;
 409
 410                 game_packet_header inpacket;
 411                 addrsize = sizeof(struct sockaddr_in);
 412
 413                 bytesin = RECVFROM(Unreliable_socket, (char *)&packet_data, sizeof(game_packet_header), 0, (struct sockaddr *)&fromaddr, &addrsize, PSNET_TYPE_GAME_TRACKER);
 414                 DeserializeGamePacket(packet_data, bytesin, &inpacket);
 415                 if((int)bytesin==-1)
 416                 {
 417                         int wserr=WSAGetLastError();
 418                         mprintf(("RECVFROM() failure. WSAGetLastError() returned %d\n",wserr));
 419
 420                 }
 421
 422                 // subtract one from the header
 423                 inpacket.len--;
 424
 425                 //Check to make sure the packets ok
 426                 if(bytesin==inpacket.len)
 427                 {
 428                         switch(inpacket.type)
 429                         {
 430                         case GNT_SERVER_ACK:
 431                                 //The server got our packet so we can stop sending now
 432                                 TrackerAckdUs = 1;
 433
 434                                 // 7/13/98 -- because of the FreeSpace iterative frame process -- set this value to 0, instead
 435                                 // of to 2 (as it originally was) since we call SendGameOver() only once.  Once we get the ack
 436                                 // from the server, we can assume that we are done.
 437                                 // need to mark this as 0
 438                                 SendingGameOver = 0;
 439                                 break;
 440                         case GNT_GAMELIST_DATA:
 441                                 int i;
 442                                 //Woohoo! Game data! put it in the buffer (if one's free)
 443                                 for(i=0;i<MAX_GAME_BUFFERS;i++)
 444                                 {
 445                                         if(GameBuffer[i].game_type==GT_UNUSED)
 446                                         {
 447                                                 memcpy(&GameBuffer[i],&inpacket.data,sizeof(game_list));
 448                                                 i=MAX_GAME_BUFFERS+1;
 449                                         }
 450                                 }
 451                                 break;
 452
 453                         case GNT_GAME_COUNT_DATA:
 454                                 //Here, inpacket.data contains the following structure
 455                                 //struct {
 456                                 //      int numusers;
 457                                 //      char channel[];//Null terminated
 458                                 //      }
 459                                 //You can add whatever code, or callback, etc. you need to deal with this data
 460
 461                                 // let the PXO screen know about this data
 462                                 int num_servers;
 463                                 char channel[512];
 464
 465                                 // get the user count
 466                                 memcpy(&num_servers,inpacket.data,sizeof(int));
 467
 468                                 // copy the channel name
 469                                 SDL_strlcpy(channel, inpacket.data+sizeof(int), SDL_arraysize(channel));
 470
 471                                 // send it to the PXO screen
 472                                 multi_pxo_channel_count_update(channel,num_servers);
 473                                 break;
 474                         }
 475                         AckPacket(inpacket.sig);
 476                 }
 477         }
 478 }
 479
 480 void UpdateGameData(void *buffer)
 481 {
 482         SendingGameOver = 0;
 483
 484         switch(GameType){
 485         case GT_FREESPACE:
 486 #ifndef MAKE_FS1
 487                 Int3();
 488 #else
 489                 memcpy(FreeSpaceTrackerGameData,buffer,sizeof(freespace_net_game_data));
 490 #endif
 491                 break;
 492
 493         case GT_FREESPACE2:
 494 #ifdef MAKE_FS1
 495                 Int3();
 496 #else
 497                 memcpy(FreeSpace2TrackerGameData,buffer,sizeof(freespace2_net_game_data));
 498 #endif
 499                 break;
 500
 501         default:
 502                 Int3();
 503                 break;
 504         }
 505 }
 506
 507 game_list * GetGameList()
 508 {
 509         static game_list gl;
 510         for(int i=0;i<MAX_GAME_BUFFERS;i++)
 511         {
 512                 if(GameBuffer[i].game_type!=GT_UNUSED)
 513                 {
 514                         memcpy(&gl,&GameBuffer[i],sizeof(game_list));
 515                         GameBuffer[i].game_type = GT_UNUSED;
 516                         return &gl;
 517                 }
 518         }
 519         return NULL;
 520 }
 521
 522 void RequestGameList()
 523 {
 524         ubyte packet_data[sizeof(game_packet_header)];
 525         int packet_length = 0;
 526
 527         GameListReq.len = GAME_HEADER_ONLY_SIZE;
 528
 529         packet_length = SerializeGamePacket(&GameListReq, packet_data);
 530         SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 531 }
 532
 533 void RequestGameListWithFilter(void *filter)
 534 {
 535         ubyte packet_data[sizeof(game_packet_header)];
 536         int packet_length = 0;
 537
 538         memcpy(&GameListReq.data,filter,sizeof(filter_game_list_struct));
 539         GameListReq.len = GAME_HEADER_ONLY_SIZE+sizeof(filter_game_list_struct);
 540
 541         packet_length = SerializeGamePacket(&GameListReq, packet_data);
 542         SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 543 }
 544
 545
 546 /* REPLACED BELOW
 547 void SendGameOver()
 548 {
 549         TrackerGameIsRunning = 0;
 550         sendto(gamesock,(const char *)&GameOverPacket,GameOverPacket.len,0,(struct sockaddr *)&gtrackaddr,sizeof(struct sockaddr_in));
 551 }
 552 */
 553
 554 //Start New 7-9-98
 555 int SendGameOver()
 556 {
 557         ubyte packet_data[sizeof(game_packet_header)];
 558         int packet_length = 0;
 559
 560         if(SendingGameOver==2)
 561         {
 562                 SendingGameOver = 0;
 563                 return 1;
 564         }
 565         if(SendingGameOver==1)
 566         {
 567                 //Wait until it's sent.
 568                 IdleGameTracker();
 569                 return 0;
 570         }
 571         if(SendingGameOver==0)
 572         {
 573                 LastGameOverPacket = timer_get_milliseconds();
 574                 FirstGameOverPacket = timer_get_milliseconds();
 575                 SendingGameOver = 1;
 576                 TrackerGameIsRunning = 0;
 577
 578                 packet_length = SerializeGamePacket(&GameOverPacket, packet_data);
 579                 SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 580
 581                 return 0;
 582         }
 583         return 0;
 584 }
 585 //End New 7-9-98
 586
 587 void AckPacket(int sig)
 588 {
 589         ubyte packet_data[sizeof(game_packet_header)];
 590         int packet_length = 0;
 591
 592         TrackAckPacket.sig = sig;
 593
 594         packet_length = SerializeGamePacket(&TrackAckPacket, packet_data);
 595         SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 596 }
 597
 598 void StartTrackerGame(void *buffer)
 599 {
 600         SendingGameOver = 0;
 601
 602         switch(GameType){
 603         case GT_FREESPACE:
 604 #ifndef MAKE_FS1
 605                 Int3();
 606 #else
 607                 memcpy(FreeSpaceTrackerGameData,buffer,sizeof(freespace_net_game_data));
 608 #endif
 609                 break;
 610
 611         case GT_FREESPACE2:
 612 #ifdef MAKE_FS1
 613                 Int3();
 614 #else
 615                 memcpy(FreeSpace2TrackerGameData,buffer,sizeof(freespace2_net_game_data));
 616 #endif
 617                 break;
 618
 619         default:
 620                 Int3();
 621                 break;
 622         }
 623         TrackerGameIsRunning = 1;
 624         LastTrackerUpdate = 0;
 625 }
 626
 627 //A new function
 628 void RequestGameCountWithFilter(void *filter)
 629 {
 630         game_packet_header GameCountReq;
 631         ubyte packet_data[sizeof(game_packet_header)];
 632         int packet_length = 0;
 633
 634 #ifdef MAKE_FS1
 635         GameCountReq.game_type = GT_FREESPACE;
 636 #else
 637         GameCountReq.game_type = GT_FREESPACE2;
 638 #endif
 639         GameCountReq.type = GNT_GAME_COUNT_REQ;
 640         GameCountReq.len = GAME_HEADER_ONLY_SIZE+sizeof(filter_game_list_struct);
 641         memcpy(&GameCountReq.data, ((filter_game_list_struct*)filter)->channel, CHANNEL_LEN);
 642
 643         packet_length = SerializeGamePacket(&GameCountReq, packet_data);
 644         SENDTO(Unreliable_socket, (char *)&packet_data, packet_length, 0, (struct sockaddr *)&gtrackaddr, sizeof(struct sockaddr_in), PSNET_TYPE_GAME_TRACKER);
 645 }