src/network/psnet2.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 1999.  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
   6  * the source.
   7  */
   8
   9 /*
  10  * $Logfile: /Freespace2/code/Network/Psnet2.cpp $
  11  * $Revision$
  12  * $Date$
  13  * $Author$
  14  *
  15  * C file containing application level network-interface.
  16  *
  17  * $Log$
  18  * Revision 1.14  2005/10/02 09:30:10  taylor
  19  * sync up rest of big-endian network changes.  it should at least be as good as what's in FS2_Open now, only better :)
  20  *
  21  * Revision 1.13  2005/10/01 22:01:28  taylor
  22  * some cleanup of earlier big-endian changes
  23  *
  24  * Revision 1.12  2004/07/04 11:39:06  taylor
  25  * fix missing debrief text, crash on exit, path separator's, warning fixes, no GR_SOFT
  26  *
  27  * Revision 1.11  2004/06/11 01:52:15  tigital
  28  * byte-swapping changes for bigendian systems
  29  *
  30  * Revision 1.10  2003/08/03 16:10:30  taylor
  31  * cleanup; compile warning fixes
  32  *
  33  * Revision 1.9  2002/07/27 19:52:54  relnev
  34  * add missing structure packing
  35  *
  36  * Revision 1.8  2002/06/09 04:41:24  relnev
  37  * added copyright header
  38  *
  39  * Revision 1.7  2002/06/02 05:31:17  relnev
  40  * unstub
  41  *
  42  * Revision 1.6  2002/06/02 02:29:39  relnev
  43  * net fixes
  44  *
  45  * Revision 1.5  2002/05/27 04:04:43  relnev
  46  * 155 undefined references left
  47  *
  48  * Revision 1.4  2002/05/26 21:27:53  theoddone33
  49  * More progress (I hate psnet2)
  50  *
  51  * Revision 1.3  2002/05/26 20:49:54  theoddone33
  52  * More progress
  53  *
  54  * Revision 1.2  2002/05/07 03:16:48  theoddone33
  55  * The Great Newline Fix
  56  *
  57  * Revision 1.1.1.1  2002/05/03 03:28:10  root
  58  * Initial import.
  59  *
  60  *
  61  * 25    9/14/99 2:21p Dave
  62  * Fixed observer mode joining and ingame stuff.
  63  *
  64  * 24    9/10/99 9:44p Dave
  65  * Bumped version # up. Make server reliable connects not have such a huge
  66  * timeout.
  67  *
  68  * 23    9/07/99 4:01p Dave
  69  * Fixed up a string.tbl paroblem (self destruct message). Make sure IPX
  70  * does everything properly (setting up address when binding). Remove
  71  * black rectangle background from UI_INPUTBOX.
  72  *
  73  * 22    8/26/99 8:51p Dave
  74  * Gave multiplayer TvT messaging a heavy dose of sanity. Cheat codes.
  75  *
  76  * 21    8/16/99 4:06p Dave
  77  * Big honking checkin.
  78  *
  79  * 20    7/26/99 5:50p Dave
  80  * Revised ingame join. Better? We'll see....
  81  *
  82  * 19    7/20/99 1:49p Dave
  83  * Peter Drake build. Fixed some release build warnings.
  84  *
  85  * 18    7/15/99 9:20a Andsager
  86  * FS2_DEMO initial checkin
  87  *
  88  * 17    7/03/99 4:08p Dave
  89  * Fixed wss_slots size issues. Fixed potentially nasty bug in low level
  90  * reliable code.
  91  *
  92  * 16    6/25/99 5:02p Jasenw
  93  * Removed old debug code.
  94  *
  95  * 15    6/07/99 9:51p Dave
  96  * Consolidated all multiplayer ports into one.
  97  *
  98  * 14    4/30/99 12:18p Dave
  99  * Several minor bug fixes.
 100  *
 101  * 13    4/27/99 5:55p Dave
 102  * Fixed Ras_connected bug with VSDK code.
 103  *
 104  * 12    4/27/99 2:59p Dave
 105  * Potential fix for reliable socket connection problem.
 106  *
 107  * 11    4/23/99 11:07a Dave
 108  * Added lots of debug multi.log output to psnet2
 109  *
 110  * 10    4/12/99 10:07p Dave
 111  * Made network startup more forgiving. Added checkmarks to dogfight
 112  * screen for players who hit commit.
 113  *
 114  * 9     3/10/99 6:50p Dave
 115  * Changed the way we buffer packets for all clients. Optimized turret
 116  * fired packets. Did some weapon firing optimizations.
 117  *
 118  * 8     3/09/99 6:24p Dave
 119  * More work on object update revamping. Identified several sources of
 120  * unnecessary bandwidth.
 121  *
 122  * 7     3/08/99 7:03p Dave
 123  * First run of new object update system. Looks very promising.
 124  *
 125  * 6     1/24/99 11:37p Dave
 126  * First full rev of beam weapons. Very customizable. Removed some bogus
 127  * Int3()'s in low level net code.
 128  *
 129  * 5     1/06/99 2:24p Dave
 130  * Stubs and release build fixes.
 131  *
 132  * 4     11/20/98 11:16a Dave
 133  * Fixed up IPX support a bit. Making sure that switching modes and
 134  * loading/saving pilot files maintains proper state.
 135  *
 136  * 3     11/19/98 4:19p Dave
 137  * Put IPX sockets back in psnet. Consolidated all multiplayer config
 138  * files into one.
 139  *
 140  * 2     11/19/98 8:04a Dave
 141  * Full support for D3-style reliable sockets. Revamped packet lag/loss
 142  * system, made it receiver side and at the lowest possible level.
 143  *
 144  * $NoKeywords: $
 145  */
 146
 147 #ifndef PLAT_UNIX
 148 #include <windows.h>
 149 #include <windowsx.h>
 150 #include <winsock.h>
 151 #include <process.h>
 152 #include <ras.h>
 153 #include <raserror.h>
 154 #else
 155 #include <sys/types.h>
 156 #include <sys/socket.h>
 157 #include <netinet/in.h>
 158 #include <arpa/inet.h>
 159 #include <netdb.h>
 160 #include <errno.h>
 161 #endif
 162 #include <stdio.h>
 163 #include <limits.h>
 164
 165 #include "pstypes.h"
 166 #include "psnet.h"
 167 #include "multi.h"
 168 #include "multiutil.h"
 169 #include "multilag.h"
 170 #include "osregistry.h"
 171 #include "timer.h"
 172 #include "multi_log.h"
 173 #include "multi_rate.h"
 174 #include "cmdline.h"
 175
 176 #ifdef PSNET2
 177
 178 // -------------------------------------------------------------------------------------------------------
 179 // PSNET 2 DEFINES/VARS
 180 //
 181
 182 int             Psnet_my_addr_valid;
 183 net_addr_t Psnet_my_addr;
 184
 185 const ubyte Null_address[4] = { 0x00, 0x00, 0x00, 0x00 };
 186
 187 int Socket_type;
 188 int Can_broadcast;                      // can we do broadcasting on our socket?
 189 int Tcp_can_broadcast = 0;
 190
 191 int Tcp_active = 0;
 192
 193 int Network_status;
 194 int Tcp_failure_code = 0;
 195 int Ras_connected;
 196 int Psnet_connection;
 197
 198 ushort  Psnet_default_port;
 199
 200 // specified their internet connnection type
 201 #define NETWORK_CONNECTION_NONE                 1
 202 #define NETWORK_CONNECTION_DIALUP               2
 203 #define NETWORK_CONNECTION_LAN                  3
 204
 205 // defines and variables to indicate network connection status
 206 #define NETWORK_STATUS_NOT_INITIALIZED  1
 207 #define NETWORK_STATUS_NO_WINSOCK               2                       // winsock failed to initialize
 208 #define NETWORK_STATUS_NO_PROTOCOL              3                       // TCP/IP doesn't appear to be loaded
 209 #define NETWORK_STATUS_NO_RELIABLE              4
 210 #define NETWORK_STATUS_RUNNING                  5                       // everything should be running
 211
 212 // defintion of structures that actually leave this machine.  psnet_send give us only
 213 // the data that we want to send.  We will add a header onto this data (packet sequence
 214 // number, possibly a checksum).  We must include a 2 byte flags variable into both structure
 215 // since the receiving end of this packet must know whether or not to checksum the packet.
 216
 217 #define MAX_TOP_LAYER_PACKET_SIZE                       680
 218
 219 // use the pack pragma to pack these structures to 2 byte aligment.  Really only needed for
 220 // the naked packet.
 221 #define MAX_PACKET_BUFFERS              75
 222
 223 #ifndef PLAT_UNIX
 224 #pragma pack(push, 2)
 225 #endif
 226
 227 // definition for a non-checksum packet
 228 typedef struct network_packet
 229 {
 230         int             sequence_number;
 231         ushort  flags;
 232         ubyte           data[MAX_TOP_LAYER_PACKET_SIZE];
 233 } network_naked_packet;
 234
 235 // structure definition for our packet buffers
 236 typedef struct network_packet_buffer
 237 {
 238         int             sequence_number;
 239         int             len;
 240         net_addr_t      from_addr;
 241         ubyte           data[MAX_TOP_LAYER_PACKET_SIZE];
 242 } network_packet_buffer;
 243
 244 // struct for a bunch of network packet buffers
 245 typedef struct network_packet_buffer_list {
 246         network_packet_buffer psnet_buffers[MAX_PACKET_BUFFERS];
 247         int psnet_seq_number;
 248         int psnet_lowest_id;
 249         int psnet_highest_id;
 250 } network_packet_buffer_list;
 251
 252 #ifndef PLAT_UNIX
 253 #pragma pack(pop)
 254 #endif
 255
 256
 257 #define MAXHOSTNAME                     128
 258
 259 #define MAX_RECEIVE_BUFSIZE     4096    // 32 K, eh?
 260 #define MAX_SEND_RETRIES                20                      // number of retries when sending would block
 261 #define MAX_LINGER_TIME                 0                       // in seconds -- when lingering to close a socket
 262
 263 //Reliable UDP stuff
 264 //*******************************
 265 #define MAXNETBUFFERS                   150             // Maximum network buffers (For between network and upper level functions, which is
 266                                                                                                         // required in case of out of order packets
 267 #define NETRETRYTIME                            0.75f           // Time after sending before we resend
 268 #define MIN_NET_RETRYTIME               0.2f
 269 #define NETTIMEOUT                              30                      // Time after receiving the last packet before we drop that user
 270 #define NETHEARTBEATTIME                3                       // How often to send a heartbeat
 271 #define MAXRELIABLESOCKETS              40                      // Max reliable sockets to open at once...
 272 #define NETBUFFERSIZE                   600             // Max size of a network packet
 273
 274 #define RELIABLE_CONNECT_TIME           7               // how long we'll wait for a response when doing a reliable connect
 275
 276 int Nettimeout = NETTIMEOUT;
 277
 278 // Reliable packet stuff
 279 #define RNT_ACK                         1                               // ACK Packet
 280 #define RNT_DATA                                2                               // Data Packet
 281 #define RNT_DATA_COMP           3                               // Compressed Data Packet
 282 #define RNT_REQ_CONN                    4                               // Requesting a connection
 283 #define RNT_DISCONNECT          5                               // Disconnecting a connection
 284 #define RNT_HEARTBEAT           6                               // Heartbeat -- send every NETHEARTBEATTIME
 285 #define RNT_I_AM_HERE           7
 286
 287 #ifndef PLAT_UNIX
 288 #pragma pack(push,r_udp)
 289 #pragma pack(1)
 290 #define PACKED
 291 #else
 292 #define PACKED __attribute__((packed))
 293 #endif
 294
 295 typedef struct {
 296         ubyte                   type;                                   // packet type
 297         ubyte                   compressed;                     //
 298         ushort          seq;                                    // sequence packet 0-65535 used for ACKing also
 299         ushort          data_len;                       // length of data
 300         float                   send_time;                      // Time the packet was sent, if an ACK the time the packet being ACK'd was sent.
 301         ubyte           data[NETBUFFERSIZE];    // Packet data
 302 } PACKED reliable_header;
 303
 304 #define RELIABLE_PACKET_HEADER_ONLY_SIZE (sizeof(reliable_header)-NETBUFFERSIZE)
 305 #define MAX_PING_HISTORY        10
 306
 307 typedef struct {
 308         ubyte buffer[NETBUFFERSIZE];
 309
 310 } PACKED reliable_net_sendbuffer;
 311
 312 typedef struct {
 313         ubyte buffer[NETBUFFERSIZE];
 314 } PACKED reliable_net_rcvbuffer;
 315
 316 typedef struct {
 317         reliable_net_sendbuffer *sbuffers[MAXNETBUFFERS];       // This is an array of pointers for quick sorting
 318         unsigned short ssequence[MAXNETBUFFERS];                                // This is the sequence number of the given packet
 319         float timesent[MAXNETBUFFERS];
 320         int send_len[MAXNETBUFFERS];
 321         reliable_net_rcvbuffer  *rbuffers[MAXNETBUFFERS];
 322         int recv_len[MAXNETBUFFERS];
 323         unsigned short rsequence[MAXNETBUFFERS];                                // This is the sequence number of the given packet
 324         float last_packet_received;                                                             // For a given connection, this is the last packet we received
 325         float last_packet_sent;
 326         struct sockaddr addr;                                                                                                   // struct sockaddr of our peer
 327         ushort status;                                                                                                  // Status of this connection
 328         unsigned short oursequence;                                                             // This is the next sequence number the application is expecting
 329         unsigned short theirsequence;                                                           // This is the next sequence number the peer is expecting
 330         net_addr_t      net_addr;                                                                                       // A FS2 network address structure
 331         ubyte connection_type;                                                                          // IP, modem, etc.
 332         float pings[MAX_PING_HISTORY];
 333         ubyte ping_pos;
 334         unsigned int num_ping_samples;
 335         float mean_ping;
 336 } reliable_socket;
 337
 338 reliable_socket Reliable_sockets[MAXRELIABLESOCKETS];
 339
 340 // socket TCP (unreliable)
 341 SOCKET TCP_socket;
 342
 343 // the sockets that the game will use when selecting network type
 344 SOCKET Unreliable_socket = INVALID_SOCKET;
 345
 346 // blah
 347 // SOCKET Reliable_UDP_socket = INVALID_SOCKET;
 348
 349 float First_sent_iamhere = 0;
 350 float Last_sent_iamhere = 0;
 351
 352 #define CONNECTSEQ 0x142                                                                                // Magic number for starting a connection, just so it isn't 0
 353
 354 unsigned int Serverconn = 0xffffffff;
 355
 356 #ifndef PLAT_UNIX
 357 #pragma pack(pop,r_udp)
 358 #endif
 359 #undef PACKED
 360
 361 //*******************************
 362
 363 // top layer buffers
 364 network_packet_buffer_list Psnet_top_buffers[PSNET_NUM_TYPES];
 365
 366 // -------------------------------------------------------------------------------------------------------
 367 // PSNET 2 FORWARD DECLARATIONS
 368 //
 369
 370 // if the string is a legally formatted ip string
 371 int psnet_is_valid_numeric_ip(char *ip);
 372
 373 // functions to get the status of a RAS connection
 374 unsigned int psnet_ras_status();
 375
 376 // set some options on a socket
 377 void psnet_socket_options( SOCKET sock );
 378
 379 // initialize tcp socket
 380 int psnet_init_tcp();
 381
 382 // get time in seconds
 383 float psnet_get_time();
 384
 385 // returns the ip address of this machine. use for calling bind() with to associate with the proper
 386 // IP address and network device.
 387 int psnet_get_ip();
 388
 389 // initialize reliable sockets
 390 int psnet_init_rel_tcp(int port, int should_listen);
 391
 392 // shutdown reliable sockets
 393 void psnet_rel_close();
 394
 395 // initialize the buffering system
 396 void psnet_buffer_init(network_packet_buffer_list *l);
 397
 398 // buffer a packet (maintain order!)
 399 void psnet_buffer_packet(network_packet_buffer_list *l, ubyte *data, int length, net_addr_t *from);
 400
 401 // get the index of the next packet in order!
 402 int psnet_buffer_get_next(network_packet_buffer_list *l, ubyte *data, int *length, net_addr_t *from);
 403
 404
 405 // -------------------------------------------------------------------------------------------------------
 406 // PSNET 2 TOP LAYER FUNCTIONS - these functions simply buffer and store packets based upon type (see PSNET_TYPE_* defines)
 407 //
 408
 409 // wrappers around select() and recvfrom() for lagging/losing data
 410 int RECVFROM(SOCKET s, char *buf, int len, int flags, sockaddr *from, int *fromlen, int psnet_type)
 411 {
 412         network_packet_buffer_list *l;
 413         net_addr_t addr;
 414         int ret;
 415         int ret_len;
 416
 417         // bad type
 418         SDL_assert((psnet_type >= 0) && (psnet_type < PSNET_NUM_TYPES));
 419         if((psnet_type < 0) || (psnet_type >= PSNET_NUM_TYPES)){
 420                 return -1;
 421         }
 422         l = &Psnet_top_buffers[psnet_type];
 423
 424         // if we have no buffer! The user should have made sure this wasn't the case by calling SELECT()
 425         ret = psnet_buffer_get_next(l, (ubyte*)buf, &ret_len, &addr);
 426         if(!ret){
 427                 Int3();
 428                 return -1;
 429         }
 430
 431         // otherwise, stuff the outgoing data
 432         ((struct sockaddr_in*)from)->sin_port = htons(addr.port);
 433         memcpy(&((struct sockaddr_in*)from)->sin_addr.s_addr, addr.addr, 4);
 434         ((struct sockaddr_in*)from)->sin_family = AF_INET;
 435         *fromlen = sizeof(struct sockaddr_in);
 436
 437         // return bytes read
 438         return ret_len;
 439 }
 440
 441 #ifdef PLAT_UNIX
 442 #define FAR
 443 #endif
 444 // wrappers around select() and recvfrom() for lagging/losing data
 445 int SELECT(int nfds, fd_set FAR * readfds, fd_set FAR * writefds, fd_set FAR * exceptfds, struct timeval FAR * timeout, int psnet_type)
 446 {
 447         network_packet_buffer_list *l;
 448
 449         // if this is a check for writability, just return the select
 450         if(writefds != NULL){
 451                 return select(nfds, readfds, writefds, exceptfds, timeout);
 452         }
 453
 454         // bad type
 455         SDL_assert((psnet_type >= 0) && (psnet_type < PSNET_NUM_TYPES));
 456         if((psnet_type < 0) || (psnet_type >= PSNET_NUM_TYPES)){
 457                 return -1;
 458         }
 459         l = &Psnet_top_buffers[psnet_type];
 460
 461         // do we have any buffers in here?
 462         if((l->psnet_lowest_id == -1) || (l->psnet_lowest_id > l->psnet_highest_id)){
 463                 return 0;
 464         }
 465
 466         // yo
 467         return 1;
 468 }
 469
 470 // wrappers around sendto to sorting through different packet types
 471 int SENDTO(SOCKET s, char * buf, int len, int flags, sockaddr *to, int tolen, int psnet_type)
 472 {
 473         char outbuf[MAX_TOP_LAYER_PACKET_SIZE + 150];
 474
 475         // stuff type
 476         outbuf[0] = (char)psnet_type;
 477         memcpy(&outbuf[1], buf, len);
 478
 479         // is the socket writeable?
 480
 481         // send it
 482         return sendto(s, outbuf, len + 1, flags, (struct sockaddr*)to, tolen);
 483 }
 484
 485 // call this once per frame to read everything off of our socket
 486 void PSNET_TOP_LAYER_PROCESS()
 487 {
 488         // read socket stuff
 489         struct sockaddr_in ip_addr;                             // UDP/TCP socket structure
 490         fd_set  rfds;
 491         timeval timeout;
 492         int read_len;
 493 #ifndef PLAT_UNIX
 494         int from_len;
 495 #else
 496         socklen_t from_len;
 497 #endif
 498         net_addr_t      from_addr;
 499         network_naked_packet packet_read;
 500
 501         // clear the addresses to remove compiler warnings
 502         memset(&ip_addr, 0, sizeof(struct sockaddr_in));
 503
 504         if ( Network_status != NETWORK_STATUS_RUNNING ) {
 505                 ml_printf("Network ==> socket not inited in PSNET_TOP_LAYER_PROCESS\n");
 506                 return;
 507         }
 508
 509         while ( 1 ) {
 510                 // check if there is any data on the socket to be read.  The amount of data that can be
 511                 // atomically read is stored in len.
 512
 513                 FD_ZERO(&rfds);
 514                 FD_SET( Unreliable_socket, &rfds );
 515                 timeout.tv_sec = 0;
 516                 timeout.tv_usec = 0;
 517
 518 #ifndef PLAT_UNIX
 519                 if ( select( -1, &rfds, NULL, NULL, &timeout) == SOCKET_ERROR ) {
 520 #else
 521                 if ( select( Unreliable_socket+1, &rfds, NULL, NULL, &timeout) == SOCKET_ERROR ) {
 522 #endif
 523                         ml_printf("Error %d doing a socket select on read\n", WSAGetLastError());
 524                         break;
 525                 }
 526
 527                 // if the read file descriptor is not set, then bail!
 528                 if ( !FD_ISSET(Unreliable_socket, &rfds) ){
 529                         return;
 530                 }
 531
 532                 // get data off the socket and process
 533                 from_len = sizeof(struct sockaddr_in);
 534                 read_len = recvfrom( Unreliable_socket, (char*)packet_read.data, MAX_TOP_LAYER_PACKET_SIZE, 0,  (struct sockaddr*)&ip_addr, &from_len);
 535
 536                 // set the from_addr for storage into the packet buffer structure
 537                 from_addr.type = Socket_type;
 538                 from_addr.port = ntohs( ip_addr.sin_port );
 539                 memcpy(from_addr.addr, &ip_addr.sin_addr.s_addr, 4);
 540
 541                 if ( read_len == SOCKET_ERROR ) {
 542                         // int x = WSAGetLastError();
 543                         ml_printf("Socket error on socket_get_data()");
 544                         break;
 545                 }
 546
 547                 // determine the packet type
 548                 int packet_type = packet_read.data[0];
 549                 // mprintf(("TOP LAYER PACKET  %d!\n", packet_type));
 550                 if((packet_type < 0) || (packet_type >= PSNET_NUM_TYPES)){
 551                         Int3();
 552                 } else {
 553                         // buffer the packet
 554                         psnet_buffer_packet(&Psnet_top_buffers[packet_type], packet_read.data + 1, read_len - 1, &from_addr);
 555                 }
 556         }
 557 }
 558
 559
 560 // -------------------------------------------------------------------------------------------------------
 561 // PSNET 2 FUNCTIONS
 562 //
 563
 564 // initialize psnet to use the specified port
 565 void psnet_init( int protocol, int port_num )
 566 {
 567         const char *internet_connection;
 568 #ifndef PLAT_UNIX
 569         WSADATA wsa_data;
 570 #endif
 571         int idx;
 572         Tcp_active = 0;
 573
 574 #if defined(DEMO) || defined(OEM_BUILD) // not for FS2_DEMO
 575         return;
 576 #endif
 577
 578         // GAME PORT INITIALIZATION STUFF
 579         if ( Network_status == NETWORK_STATUS_RUNNING ){
 580                 ml_string("Skipping psnet_init() because network already running");
 581                 return;
 582         }
 583
 584         // 'lan' should be a safe default in 2015
 585         internet_connection = os_config_read_string("Network", "NetworkConnection", "LAN");
 586
 587         if ( !SDL_strcasecmp(internet_connection, NOX("dialup")) ) {
 588                 ml_string("psnet_init() detected dialup connection");
 589
 590                 Psnet_connection = NETWORK_CONNECTION_DIALUP;
 591         } else if ( !SDL_strcasecmp(internet_connection, NOX("lan")) ) {
 592                 ml_string("psnet_init() detected lan connection");
 593
 594                 Psnet_connection = NETWORK_CONNECTION_LAN;
 595         } else {
 596                 ml_string("psnet_init() detected no connection");
 597
 598                 Psnet_connection = NETWORK_CONNECTION_NONE;
 599         }
 600
 601         Network_status = NETWORK_STATUS_NO_WINSOCK;
 602 #ifndef PLAT_UNIX
 603         if (WSAStartup(0x101, &wsa_data )){
 604                 return;
 605         }
 606 #endif
 607
 608         // get the port for running this game on.  Be careful that it cannot be out of bounds
 609         Psnet_default_port = DEFAULT_GAME_PORT;
 610         if ( (port_num > 1023) && (port_num < USHRT_MAX) ) {
 611                 Psnet_default_port = (ushort)port_num;
 612         }
 613
 614         // initialize TCP now
 615         Tcp_active = 1;
 616         if(!psnet_init_tcp()){
 617                 ml_printf("Error on TCP startup %d\n", Tcp_failure_code);
 618
 619                 Tcp_active = 0;
 620         } else {
 621                 if(!psnet_init_rel_tcp(Psnet_default_port + 1, 0)){
 622                         ml_printf("Network", "Error on TCP startup %d\n", Tcp_failure_code);
 623
 624                         Tcp_active = 0;
 625                 }
 626         }
 627
 628         // clear reliable sockets
 629         reliable_socket *rsocket;
 630         int j;
 631         for(j=0; j<MAXRELIABLESOCKETS; j++){
 632                 rsocket=&Reliable_sockets[j];
 633                 memset(rsocket,0,sizeof(reliable_socket));
 634         }
 635
 636         // determine if we've successfully initialized the protocol we want
 637         if ( !Tcp_active ) {
 638                 Network_status = NETWORK_STATUS_NO_PROTOCOL;
 639
 640                 ml_string("No protocol in psnet_init()!");
 641         }
 642
 643         // specified network timeout
 644         Nettimeout = NETTIMEOUT;
 645         if(Cmdline_timeout > 0){
 646                 Nettimeout = Cmdline_timeout;
 647         }
 648
 649         // set ras status
 650         psnet_ras_status();
 651
 652         if(Network_status != NETWORK_STATUS_NO_PROTOCOL){
 653                 // set network to be running
 654                 Network_status = NETWORK_STATUS_RUNNING;
 655
 656                 // determine if our socket can broadcast
 657                 Can_broadcast = Tcp_can_broadcast;
 658
 659                 // initialize all packet type buffers
 660                 for(idx=0; idx<PSNET_NUM_TYPES; idx++){
 661                         psnet_buffer_init(&Psnet_top_buffers[idx]);
 662                 }
 663         }
 664 }
 665
 666 // shutdown psnet
 667 void psnet_close()
 668 {
 669         if ( Network_status != NETWORK_STATUS_RUNNING ){
 670                 return;
 671         }
 672
 673 #ifndef PLAT_UNIX
 674         WSACancelBlockingCall();
 675 #endif
 676
 677         if ( TCP_socket != (int)INVALID_SOCKET ) {
 678                 shutdown( TCP_socket, 1 );
 679                 closesocket( TCP_socket );
 680         }
 681
 682 #ifndef PLAT_UNIX
 683         if (WSACleanup())       {
 684                 //Warning( LOCATION, "Error closing wsock!\n" );
 685         }
 686 #endif
 687
 688         // close down all reliable sockets - this forces them to
 689         // send a disconnect to any remote machines
 690         psnet_rel_close();
 691
 692         Network_status = NETWORK_STATUS_NOT_INITIALIZED;
 693 }
 694
 695 // set the protocol to use
 696 int psnet_use_protocol( int protocol )
 697 {
 698 #ifndef PLAT_UNIX
 699         int len;
 700 #else
 701         socklen_t len;
 702 #endif
 703         struct sockaddr_in              ip_addr;
 704
 705         // zero out my address
 706         Psnet_my_addr_valid = 0;
 707         memset( &Psnet_my_addr, 0, sizeof(Psnet_my_addr) );
 708
 709         // wait until we choose a protocol to determine if we can broadcast
 710         Can_broadcast = 0;
 711
 712         ml_string("In psnet_use_protocol()");
 713
 714         if (protocol != NET_TCP) {
 715                 Int3();
 716                 return 0;
 717         }
 718
 719
 720         if ( Network_status != NETWORK_STATUS_RUNNING ){
 721                 ml_string("Network_status != NETWORK_STATUS_RUNNING in NET_TCP in psnet_use_protocol()");
 722                 return 0;
 723         }
 724
 725         // assign the TCP_* sockets to the socket values used elsewhere
 726         Unreliable_socket = TCP_socket;
 727
 728         Can_broadcast = Tcp_can_broadcast;
 729         if(Can_broadcast){
 730                 ml_printf("Psnet : TCP broadcast\n");
 731         }
 732
 733         // get the socket name, and put it into My_addr
 734         len = sizeof(struct sockaddr_in);
 735         if ( getsockname(TCP_socket, (struct sockaddr *)&ip_addr, &len) == SOCKET_ERROR ) {
 736                 ml_printf("Unable to get sock name for TCP unreliable socket (%d)\n", WSAGetLastError() );
 737
 738                 return 0;
 739         }
 740
 741         memcpy(Psnet_my_addr.addr, &ip_addr.sin_addr, 4);
 742         Psnet_my_addr.port = Psnet_default_port;
 743
 744         ml_printf("Psnet using - NET_TCP\n");
 745
 746
 747         Psnet_my_addr.type = protocol;
 748         Socket_type = protocol;
 749
 750         return 1;
 751 }
 752
 753 // get the status of the network
 754 int psnet_get_network_status()
 755 {
 756         // first case is when "none" is selected
 757         if ( Psnet_connection == NETWORK_CONNECTION_NONE ) {
 758                 return NETWORK_ERROR_NO_TYPE;
 759         }
 760
 761         // first, check the connection status of the network
 762         if ( Network_status == NETWORK_STATUS_NO_WINSOCK )
 763                 return NETWORK_ERROR_NO_WINSOCK;
 764
 765         if ( Network_status == NETWORK_STATUS_NO_PROTOCOL ){
 766                 return NETWORK_ERROR_NO_PROTOCOL;
 767         }
 768
 769         // network is running -- be sure that the RAS people know to connect if they currently cannot.
 770
 771         if ( Psnet_connection == NETWORK_CONNECTION_DIALUP ) {
 772                 // if on a dialup connection, be sure that RAS is active.
 773                 if ( !Ras_connected ) {
 774                         return NETWORK_ERROR_CONNECT_TO_ISP;
 775                 }
 776         } else if ( Psnet_connection == NETWORK_CONNECTION_LAN ) {
 777                 // if on a LAN, and they have a dialup connection active, return error to indicate that they need
 778                 // to pick the right connection type
 779                 if ( Ras_connected ) {
 780                         return NETWORK_ERROR_LAN_AND_RAS;
 781                 }
 782         }
 783         return NETWORK_ERROR_NONE;
 784 }
 785
 786 // convert a net_addr to a string
 787 char* psnet_addr_to_string( char * text, const int max_textlen, net_addr_t * address )
 788 {
 789
 790         if ( Network_status != NETWORK_STATUS_RUNNING )         {
 791                 SDL_strlcpy( text, XSTR("[no networking]",910), max_textlen );
 792                 return text;
 793         }
 794
 795         in_addr temp_addr;
 796
 797         SDL_assert(address->type == NET_TCP);
 798
 799         memcpy(&temp_addr.s_addr, address->addr, 4);
 800         SDL_strlcpy( text, inet_ntoa(temp_addr), max_textlen );
 801
 802         return text;
 803 }
 804
 805 // convert a string to a net addr
 806 void psnet_string_to_addr( net_addr_t * address, char * text, const int max_textlen )
 807 {
 808         struct hostent *he;
 809         char str[255], *c, *port;
 810         in_addr addr;
 811
 812         if ( Network_status != NETWORK_STATUS_RUNNING ) {
 813                 SDL_strlcpy( text, XSTR("[no networking]",910), max_textlen );
 814                 return;
 815         }
 816
 817         // copy the text string to local storage to look for ports
 818         SDL_assert( strlen(text) < 255 );
 819         SDL_strlcpy(str, text, SDL_arraysize(str));
 820         c = strrchr(str, ':');
 821         port = NULL;
 822         if ( c ) {
 823                 *c = '\0';
 824                 port = c+1;
 825         }
 826
 827         SDL_assert(address->type == NET_TCP);
 828
 829
 830         addr.s_addr = inet_addr(str);
 831         // if we get INADDR_NONE returns, then we need to try and resolve the host
 832         // name
 833         if ( addr.s_addr == INADDR_NONE ) {
 834                 he = gethostbyname( str );
 835                 // returns a non-null pointer if successful, so get the address
 836                 if ( he ) {
 837                         addr.s_addr = ((in_addr *)(he->h_addr))->s_addr;                        // this is the address in network byte order
 838                 } else {
 839                         addr.s_addr = INADDR_NONE;
 840                 }
 841         }
 842
 843         memcpy(address->addr, &addr.s_addr, 4);
 844
 845         if ( port ){
 846                 address->port = (ushort)(atoi(port));
 847         }
 848 }
 849
 850 // compare 2 addresses
 851 int psnet_same( net_addr_t * a1, net_addr_t * a2 )
 852 {
 853         return !memcmp(a1->addr, a2->addr, 4);
 854 }
 855
 856 // send data unreliably
 857 int psnet_send( net_addr_t * who_to, void * data, int len, int np_index )
 858 {
 859         // send data unreliably
 860         SOCKET send_sock;
 861         struct sockaddr_in sockaddr;                            // UDP/TCP socket structure
 862         int ret, send_len;
 863         ubyte iaddr[4], *send_data;
 864         short port;
 865         fd_set  wfds;
 866         struct timeval timeout;
 867
 868         // always use the reliable socket
 869         send_sock = Unreliable_socket;
 870
 871         if ( Network_status != NETWORK_STATUS_RUNNING ) {
 872                 ml_printf("Network ==> Socket not inited in psnet_send\n");
 873                 return 0;
 874         }
 875
 876         if ( psnet_same( who_to, &Psnet_my_addr) ){
 877                 return 0;
 878         }
 879
 880         if (who_to->type != NET_TCP) {
 881                 Int3();
 882                 return 0;
 883         }
 884
 885         memcpy(iaddr, who_to->addr, 4);
 886
 887         if ( memcmp(iaddr, Null_address, 4) == 0) {
 888                 ml_printf("Network ==> send to address is 0 in psnet_send\n");
 889                 return 0;
 890         }
 891
 892         port = who_to->port;
 893
 894         if ( port == 0) {
 895                 ml_printf("Network ==> destination port %d invalid in psnet_send\n", port);
 896                 return 0;
 897         }
 898
 899         // stuff the data with the type
 900         send_data = (ubyte*)data;
 901         send_len = len;
 902
 903         FD_ZERO(&wfds);
 904         FD_SET( send_sock, &wfds );
 905         timeout.tv_sec = 0;
 906         timeout.tv_usec = 0;
 907
 908         if ( SELECT( send_sock+1, NULL, &wfds, NULL, &timeout, PSNET_TYPE_UNRELIABLE) == SOCKET_ERROR ) {
 909                 ml_printf("Error on blocking select for write %d\n", WSAGetLastError() );
 910                 return 0;
 911         }
 912
 913         // if the write file descriptor is not set, then bail!
 914         if ( !FD_ISSET(send_sock, &wfds ) ){
 915                 return 0;
 916         }
 917
 918         sockaddr.sin_family = AF_INET;
 919         memcpy(&sockaddr.sin_addr.s_addr, iaddr, 4);
 920         sockaddr.sin_port = htons(port);
 921
 922         multi_rate_add(np_index, "udp(h)", send_len + UDP_HEADER_SIZE);
 923         multi_rate_add(np_index, "udp", send_len);
 924         ret = SENDTO( send_sock, (char *)send_data, send_len, 0, (struct sockaddr*)&sockaddr, sizeof(sockaddr), PSNET_TYPE_UNRELIABLE );
 925
 926         if ( ret != SOCKET_ERROR )      {
 927                 return 1;
 928         }
 929         //Warning( LOCATION, "Couldn't send data (0x%x)!\n", WSAGetLastError() );
 930         return 0;
 931 }
 932
 933 // get data from the unreliable socket
 934 int psnet_get( void * data, net_addr_t * from_addr )
 935 {
 936         int buffer_size;
 937
 938         // try and get a free buffer and return its size
 939         if(psnet_buffer_get_next(&Psnet_top_buffers[PSNET_TYPE_UNRELIABLE], (ubyte*)data, &buffer_size, from_addr)){
 940                 return buffer_size;
 941         }
 942
 943         // return nothing
 944         return 0;
 945 }
 946
 947 // broadcast data on unreliable socket
 948 int psnet_broadcast( net_addr_t * who_to, void * data, int len )
 949 {
 950         if ( Network_status != NETWORK_STATUS_RUNNING ) {
 951                 ml_printf("Network ==> Socket not inited in psnet_broadcast\n");
 952                 return 0;
 953         }
 954
 955         if ( !Can_broadcast ) {
 956                 ml_printf("Cannot broadcast -- returning without doing anything\n");
 957                 return 0;
 958         }
 959
 960         ubyte broadcast[4] = { 0xff, 0xff, 0xff, 0xff };
 961
 962         // broadcasting works on a local subnet which is all we really want to do for now anyway.
 963         // we might keep this in as an option for freespace later.
 964         memcpy(who_to->addr, broadcast, 4);
 965         psnet_send(who_to, data, len);
 966
 967         return 1;
 968 }
 969
 970 // flush all sockets
 971 void psnet_flush()
 972 {
 973         ubyte data[MAX_TOP_LAYER_PACKET_SIZE + 250];
 974         net_addr_t from_addr;
 975
 976         while ( psnet_get( data, &from_addr ) > 0 ) ;
 977 }
 978
 979 // if the passed string is a valid IP string
 980 int psnet_is_valid_ip_string( char *ip_string, int allow_port )
 981 {
 982         in_addr addr;
 983         struct hostent *host_ent;
 984         char str[255], *c;
 985
 986         // our addresses may have ports, so make local copy and remove port number
 987         SDL_assert( strlen(ip_string) < 255 );
 988         SDL_strlcpy(str, ip_string, SDL_arraysize(str));
 989         c = strrchr(str, ':');
 990         if ( c ){
 991                 *c = '\0';
 992         }
 993
 994         addr.s_addr = inet_addr(ip_string);
 995         if ( addr.s_addr != INADDR_NONE ){
 996                 // make sure the ip string is a valid format string
 997                 if(psnet_is_valid_numeric_ip(ip_string)){
 998                         return 1;
 999                 }
1000         }
1001
1002         // try name resolution
1003         host_ent = gethostbyname( ip_string );
1004         if ( !host_ent ){
1005                 return 0;
1006         }
1007
1008         // valid host entry so return 1;
1009         return 1;
1010 }
1011
1012
1013 // -------------------------------------------------------------------------------------------------------
1014 // PSNET 2 RELIABLE SOCKET FUNCTIONS
1015 //
1016
1017 // compare 2 pings
1018 int psnet_rel_ping_compare( const void *arg1, const void *arg2 )
1019 {
1020         float *ping1 = (float *)arg1;
1021         float *ping2 = (float *)arg2;
1022
1023         if(*ping1==*ping2) return 0;
1024         else if(*ping1>*ping2) return 1;
1025         else if(*ping1<*ping2) return -1;
1026
1027         return 0;
1028 }
1029
1030 void psnet_rel_send_ack(struct sockaddr *raddr, unsigned int sig, ubyte link_type, float time_sent)
1031 {
1032         int sig_tmp;
1033         reliable_header ack_header;
1034
1035         if (link_type != NET_TCP) {
1036                 Int3();
1037                 return;
1038         }
1039
1040         ack_header.type = RNT_ACK;
1041         ack_header.data_len = sizeof(unsigned int);
1042         ack_header.send_time = INTEL_FLOAT( time_sent );
1043         sig_tmp = INTEL_INT( sig );
1044         memcpy(&ack_header.data,&sig_tmp,sizeof(unsigned int));
1045
1046         if ( !Tcp_active ) {
1047                 ml_string("No TCP in rel_send_ack()");
1048                 return;
1049         }
1050
1051         SENDTO(Unreliable_socket, (char *)&ack_header, RELIABLE_PACKET_HEADER_ONLY_SIZE+sizeof(unsigned int), 0, raddr, sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1052 }
1053
1054 // function to shutdown and close the given socket.  It takes a couple of things into consideration
1055 // when closing, such as possibly reiniting reliable sockets if they are closed here.
1056 void psnet_rel_close_socket( PSNET_SOCKET_RELIABLE *sockp )
1057 {
1058         reliable_header diss_conn_header;
1059
1060         // if the socket is out of range
1061         if(*sockp>=MAXRELIABLESOCKETS)
1062         {
1063                 ml_printf("Invalid socket id passed to nw_NewCloseSocket() -- %d\n",*sockp);
1064                 return;
1065         }
1066         ml_printf("Closing socket %d\n",*sockp);
1067
1068         // go through every buffer and "free it up(tm)"
1069         int i;
1070         for(i=0;i<MAXNETBUFFERS;i++){
1071                 if(Reliable_sockets[*sockp].rbuffers[i]){
1072                         if(Reliable_sockets[*sockp].rbuffers[i] != NULL){
1073                                 free(Reliable_sockets[*sockp].rbuffers[i]);
1074                         }
1075                         Reliable_sockets[*sockp].rbuffers[i] = NULL;
1076                         Reliable_sockets[*sockp].rsequence[i] = 0;
1077                 }
1078                 if(Reliable_sockets[*sockp].sbuffers[i]){
1079                         if(Reliable_sockets[*sockp].sbuffers[i] != NULL){
1080                                 free(Reliable_sockets[*sockp].sbuffers[i]);
1081                         }
1082                         Reliable_sockets[*sockp].sbuffers[i] = NULL;
1083                         Reliable_sockets[*sockp].rsequence[i] = 0;
1084                 }
1085         }
1086
1087         // send a disconnect packet to the socket on the other end
1088         diss_conn_header.type = RNT_DISCONNECT;
1089         diss_conn_header.seq = CONNECTSEQ;
1090         diss_conn_header.data_len = 0;
1091         if(*sockp==Serverconn){
1092                 Serverconn = 0xffffffff;
1093         }
1094
1095         if (Reliable_sockets[*sockp].connection_type ==  NET_TCP) {
1096                 SDL_assert(Tcp_active);
1097                 SENDTO(Unreliable_socket, (char *)&diss_conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[*sockp].addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1098         } else {
1099                 ml_printf("Unknown protocol type in nw_CloseSocket()!\n");
1100                 // Int3();
1101         }
1102
1103         memset(&Reliable_sockets[*sockp],0,sizeof(reliable_socket));
1104         Reliable_sockets[*sockp].status = RNF_UNUSED;
1105 }
1106
1107 // function to check the status of the reliable socket and try to re-initialize it if necessary.
1108 // win95 seems to have trouble doing a reinit of the socket immediately after close, so this
1109 // function exists to check the status, and reinitialize if we need to
1110 int psnet_rel_check()
1111 {
1112         return 1;
1113 }
1114
1115 // send data reliably
1116 int psnet_rel_send(PSNET_SOCKET_RELIABLE socketid, ubyte *data, int length, int np_index)
1117 {
1118         int i;
1119         int bytesout = 0;
1120         reliable_socket *rsocket;
1121
1122         if(socketid >= MAXRELIABLESOCKETS){
1123                 ml_printf("Invalid socket id passed to psnet_rel_send() -- %d\n",socketid);
1124                 return -1;
1125         }
1126
1127         SDL_assert( length < (int)(sizeof(reliable_header)) );
1128         psnet_rel_work();
1129
1130         rsocket=&Reliable_sockets[socketid];
1131         if(rsocket->status!=RNF_CONNECTED) {
1132                 //We can't send because this isn't a connected reliable socket.
1133                 ml_printf("Can't send packet because of status %d in nw_SendReliable(). socket = %d\n",rsocket->status,socketid);
1134                 return -1;
1135         }
1136
1137         // Add the new packet to the sending list and send it.
1138         for(i=0;i<MAXNETBUFFERS;i++){
1139                 if(NULL==rsocket->sbuffers[i]){
1140                         reliable_header send_header;
1141                         int send_this_packet=1;
1142
1143                         rsocket->send_len[i] = length;
1144                         rsocket->sbuffers[i] = (reliable_net_sendbuffer *)malloc(sizeof(reliable_net_sendbuffer));
1145
1146                         memcpy(rsocket->sbuffers[i]->buffer,data,length);
1147
1148                         send_header.seq = INTEL_SHORT( rsocket->theirsequence );
1149                         rsocket->ssequence[i] = rsocket->theirsequence;
1150
1151                         memcpy(send_header.data,data,length);
1152                         send_header.data_len = INTEL_SHORT( (ushort)length );
1153                         send_header.type = RNT_DATA;
1154                         send_header.send_time = psnet_get_time();
1155                         send_header.send_time = INTEL_FLOAT( send_header.send_time );
1156                         // struct sockaddr_in * rsockaddr = (struct sockaddr_in *)&rsocket->addr;
1157
1158                         if (send_this_packet){
1159                                 if (rsocket->connection_type == NET_TCP) {
1160                                         SDL_assert(Tcp_active);
1161                                         multi_rate_add(np_index, "tcp(h)", RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i]);
1162                                         bytesout = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1163                                 } else {
1164                                         ml_printf("Unknown protocol type in nw_SendReliable()!\n");
1165                                         Int3();
1166                                 }
1167                         }
1168                         if((bytesout==SOCKET_ERROR)&&(WSAEWOULDBLOCK==WSAGetLastError())){
1169                                 //This will cause it to try to send again next frame. (or sooner)
1170                                 rsocket->timesent[i] = psnet_get_time()-(NETRETRYTIME*4);
1171                         } else {
1172                                 rsocket->timesent[i] = psnet_get_time();
1173                         }
1174
1175
1176                         rsocket->theirsequence++;
1177                         return bytesout;
1178                 }
1179         }
1180         ml_printf("PSNET RELIABLE SEND BUFFER OVERRUN. socket = %d\n",socketid);
1181         // Int3();
1182         return 0;
1183 }
1184
1185 // Return codes:
1186 // -1 socket not connected
1187 // 0 No packet ready to receive
1188 // >0 Buffer filled with the number of bytes recieved
1189 int psnet_rel_get(PSNET_SOCKET socketid, ubyte *buffer, int max_len)
1190 {
1191         int i;
1192
1193         reliable_socket *rsocket = NULL;
1194         psnet_rel_work();
1195         if(socketid >= MAXRELIABLESOCKETS){
1196                 ml_printf("Invalid socket id passed to nw_NewReceiveReliable() -- %d\n",socketid);
1197                 return -1;
1198         }
1199         rsocket = &Reliable_sockets[socketid];
1200         if( (RNF_CONNECTED!=rsocket->status) && (RNF_LIMBO!=rsocket->status) ){
1201                 ml_printf("Can't receive packet because it isn't connected in nw_ReceiveReliable(). socket = %d\n",socketid);
1202                 return 0;
1203         }
1204         //If the buffer position is the position we are waiting for, fill in
1205         //the buffer we received in the call to this function and return true
1206
1207         for(i=0; i<MAXNETBUFFERS; i++){
1208                 if((rsocket->rsequence[i] == rsocket->oursequence) && rsocket->rbuffers[i]){
1209                         memcpy(buffer,rsocket->rbuffers[i]->buffer, rsocket->recv_len[i]);
1210                         free(rsocket->rbuffers[i]);
1211                         rsocket->rbuffers[i] = NULL;
1212                         rsocket->rsequence[i] = 0;
1213                         rsocket->oursequence++;
1214                         return rsocket->recv_len[i];
1215                 }
1216         }
1217
1218         return 0;
1219 }
1220
1221 // process all active reliable sockets
1222 void psnet_rel_work()
1223 {
1224         int i,j;
1225         int rcode = -1;
1226         int max_len = NETBUFFERSIZE;
1227         fd_set read_fds;
1228         struct timeval timeout;
1229         static reliable_header rcv_buff;
1230         static struct sockaddr rcv_addr;
1231         int bytesin = 0;
1232         int addrlen = sizeof(struct sockaddr);
1233         timeout.tv_sec=0;
1234         timeout.tv_usec=0;
1235
1236         PSNET_TOP_LAYER_PROCESS();
1237
1238         // negotitate initial connection with the server
1239         reliable_socket *rsocket = NULL;
1240         if(Serverconn != 0xffffffff){
1241                 //Check to see if we need to send a packet out.
1242                 if((Reliable_sockets[Serverconn].status==RNF_LIMBO) && ((Serverconn != 0xffffffff) && fl_abs((psnet_get_time() - Last_sent_iamhere))>NETRETRYTIME) ){
1243                         reliable_header conn_header;
1244                         //Now send I_AM_HERE packet
1245                         conn_header.type = RNT_I_AM_HERE;
1246                         conn_header.seq = (ushort)(~CONNECTSEQ);
1247                         conn_header.data_len = 0;
1248                         Last_sent_iamhere = psnet_get_time();
1249                         int ret = SOCKET_ERROR;
1250
1251                         if (Reliable_sockets[Serverconn].connection_type == NET_TCP) {
1252                                 SDL_assert(Tcp_active);
1253                                 ret = SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[Serverconn].addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1254                         }
1255
1256                         if((ret == SOCKET_ERROR) && (WSAEWOULDBLOCK == WSAGetLastError())){
1257                                 Reliable_sockets[Serverconn].last_packet_sent = psnet_get_time()-NETRETRYTIME;
1258                         } else {
1259                                 Reliable_sockets[Serverconn].last_packet_sent = psnet_get_time();
1260                         }
1261                 }
1262         }
1263
1264         ubyte link_type;
1265         net_addr_t d3_rcv_addr;
1266         struct sockaddr_in *rcvaddr;
1267         int udp_has_data = 0;
1268         do {
1269                 rsocket = NULL;
1270                 //Check UDP
1271                 FD_ZERO(&read_fds);
1272                 FD_SET(Unreliable_socket, &read_fds);
1273                 udp_has_data = SELECT(Unreliable_socket+1,&read_fds,NULL,NULL,&timeout, PSNET_TYPE_RELIABLE);
1274                 bytesin = 0;
1275                 addrlen = sizeof(struct sockaddr);
1276                 if(udp_has_data){
1277                         struct sockaddr_in *tcp_addr = (struct sockaddr_in *)&rcv_addr;
1278                         memset(&d3_rcv_addr,0,sizeof(net_addr_t));
1279                         memset(&rcv_addr,0,sizeof(struct sockaddr));
1280                         bytesin = RECVFROM(Unreliable_socket, (char *)&rcv_buff,sizeof(reliable_header), 0, (struct sockaddr *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1281                         rcv_buff.seq = INTEL_SHORT( rcv_buff.seq );
1282                         rcv_buff.data_len = INTEL_SHORT( rcv_buff.data_len );
1283                         rcv_buff.send_time = INTEL_FLOAT( rcv_buff.send_time );
1284                         memcpy(d3_rcv_addr.addr, &tcp_addr->sin_addr.s_addr, 4);
1285                         d3_rcv_addr.port = tcp_addr->sin_port;
1286                         d3_rcv_addr.type = NET_TCP;
1287                         link_type = NET_TCP;
1288                 } else {
1289                         //Neither socket had data waiting
1290                         break;
1291                 }
1292
1293                 if(bytesin==-1){
1294                         ml_printf("recvfrom returned an error! -- %d\n",WSAGetLastError());
1295                         //Int3();//See Kevin
1296                         return;
1297                 }
1298                 if(bytesin){
1299                         //Someone wants to connect, so find a slot
1300                         if(rcv_buff.type == RNT_REQ_CONN){
1301                                 for(i=1; i<MAXRELIABLESOCKETS; i++){
1302                                         if( (Reliable_sockets[i].status == RNF_CONNECTED) || (Reliable_sockets[i].status == RNF_LIMBO) ){
1303                                                 //if(memcmp(&rcv_addr,&reliable_sockets[i].addr,sizeof(struct sockaddr))==0)
1304                                                 if(memcmp(&d3_rcv_addr, &Reliable_sockets[i].net_addr, sizeof(net_addr_t)) == 0){
1305                                                         //We already have a reliable link to this user, so we will ignore it...
1306                                                         ml_printf("Received duplicate connection request. %d\n",i);
1307                                                         //reliable_sockets[i].last_packet_received = timer_GetTime();
1308                                                         psnet_rel_send_ack(&Reliable_sockets[i].addr, rcv_buff.seq, link_type, rcv_buff.send_time);
1309                                                         //We will change this as a hack to prevent later code from hooking us up
1310                                                         rcv_buff.type = 0xff;
1311                                                         continue;
1312                                                 }
1313                                         }
1314                                 }
1315                                 for(i=1; i<MAXRELIABLESOCKETS; i++){
1316                                         if(Reliable_sockets[i].status == RNF_UNUSED){
1317                                                 //Add the new connection here.
1318                                                 Reliable_sockets[i].connection_type=link_type;
1319                                                 memcpy(&Reliable_sockets[i].net_addr, &d3_rcv_addr, sizeof(net_addr_t));
1320                                                 memcpy(&Reliable_sockets[i].addr ,&rcv_addr, sizeof(struct sockaddr));
1321                                                 Reliable_sockets[i].ping_pos = 0;
1322                                                 Reliable_sockets[i].num_ping_samples = 0;
1323                                                 Reliable_sockets[i].status = RNF_LIMBO;
1324                                                 Reliable_sockets[i].last_packet_received = psnet_get_time();
1325                                                 rsocket = &Reliable_sockets[i];
1326                                                 rcvaddr = (struct sockaddr_in *)&rcv_addr;
1327                                                 ml_printf("Connect from %s:%d\n", inet_ntoa(rcvaddr->sin_addr), htons(rcvaddr->sin_port));
1328                                                 break;
1329                                         }
1330                                 }
1331                                 if(i==MAXRELIABLESOCKETS){
1332                                         //No more connections!
1333                                         ml_printf("Out of incoming reliable connection sockets\n");
1334                                         //Int3();//See Kevin
1335                                         continue;
1336                                 }
1337                                 psnet_rel_send_ack(&rsocket->addr, rcv_buff.seq, link_type, rcv_buff.send_time);
1338                         }
1339
1340                         //Find out if this is a packet from someone we were expecting a packet.
1341                         rcvaddr = (struct sockaddr_in *)&rcv_addr;
1342                         for(i=1; i<MAXRELIABLESOCKETS; i++){
1343                                 if(memcmp(&d3_rcv_addr,&Reliable_sockets[i].net_addr,sizeof(net_addr_t)) == 0){
1344                                         rsocket=&Reliable_sockets[i];
1345                                         break;
1346                                 }
1347                         }
1348                         if(rsocket == NULL){
1349                                 ml_printf("Received reliable data from unconnected client.\n");
1350                                 ml_printf("Received from %s:%d\n",inet_ntoa(rcvaddr->sin_addr),rcvaddr->sin_port);
1351                                 continue ;
1352                         }
1353                         rsocket->last_packet_received = psnet_get_time();
1354
1355                         if(rsocket->status != RNF_CONNECTED){
1356                                 //Get out of limbo
1357                                 if(rsocket->status == RNF_LIMBO){
1358                                         //this is our connection to the server
1359                                         if(Serverconn != 0xffffffff){
1360                                                 if(rcv_buff.type == RNT_ACK){
1361                                                         ushort *acknum = (ushort *)&rcv_buff.data;
1362                                                         if(*acknum == (~CONNECTSEQ & 0xffff)){
1363                                                                 rsocket->status = RNF_CONNECTED;
1364                                                                 ml_printf("Got ACK for IAMHERE!\n");
1365                                                         }
1366                                                         continue;
1367                                                 }
1368                                         } else if(rcv_buff.type == RNT_I_AM_HERE){
1369                                                 rsocket->status = RNF_CONNECTING;
1370                                                 psnet_rel_send_ack(&rsocket->addr, rcv_buff.seq, link_type, rcv_buff.send_time);
1371                                                 ml_printf("Got IAMHERE!\n");
1372                                                 continue;
1373                                         }
1374                                 }
1375                                 if((rcv_buff.type == RNT_DATA) && (Serverconn != 0xffffffff)){
1376                                         rsocket->status = RNF_CONNECTED;
1377                                 } else {
1378                                         rsocket->last_packet_received = psnet_get_time();
1379                                         continue;
1380                                 }
1381                         }
1382                         //Update the last recv variable so we don't need a heartbeat
1383                         rsocket->last_packet_received = psnet_get_time();
1384
1385                         if(rcv_buff.type == RNT_HEARTBEAT){
1386                                 continue;
1387                         }
1388                         if(rcv_buff.type == RNT_ACK){
1389                                 //Update ping time
1390                                 rsocket->num_ping_samples++;
1391
1392                                 rsocket->pings[rsocket->ping_pos] = rsocket->last_packet_received - rcv_buff.send_time;
1393                                 if(rsocket->num_ping_samples >= MAX_PING_HISTORY){
1394                                         float sort_ping[MAX_PING_HISTORY];
1395                                         for(int a=0;a<MAX_PING_HISTORY;a++){
1396                                                 sort_ping[a] = rsocket->pings[a];
1397                                         }
1398
1399                                         qsort(sort_ping ,MAX_PING_HISTORY, sizeof(float), psnet_rel_ping_compare);
1400                                         rsocket->mean_ping = ((sort_ping[MAX_PING_HISTORY/2]+sort_ping[(MAX_PING_HISTORY/2)+1]))/2;
1401                                 }
1402                                 rsocket->ping_pos++;
1403                                 if(rsocket->ping_pos >= MAX_PING_HISTORY){
1404                                         rsocket->ping_pos=0;
1405                                 }
1406
1407                                 // if this is an ack for a send buffer on the socket, kill the send buffer. its done
1408                                 for(i=0; i<MAXNETBUFFERS; i++){
1409                                         unsigned int *acksig = (unsigned int *)&rcv_buff.data;
1410                                         if(rsocket){
1411                                                 if(rsocket->sbuffers[i]){
1412                                                         if(rsocket->ssequence[i] == INTEL_INT(*acksig) ){
1413                                                                 SDL_assert(rsocket->sbuffers[i] != NULL);
1414                                                                 free(rsocket->sbuffers[i]);
1415                                                                 rsocket->sbuffers[i] = NULL;
1416                                                                 rsocket->ssequence[i] = 0;
1417                                                         }
1418                                                 }
1419                                         }
1420                                 }
1421                                 //remove that packet from the send buffer
1422                                 rsocket->last_packet_received = psnet_get_time();
1423                                 continue;
1424                         }
1425
1426                         if(rcv_buff.type == RNT_DATA_COMP){
1427                                 //More2Come
1428                                 //Decompress it. Put it back in the buffer. Process it as RNT_DATA
1429                                 rcv_buff.type = RNT_DATA;
1430                         }
1431                         if(rcv_buff.type == RNT_DATA){
1432                                 //If the data is out of order by >= MAXNETBUFFERS-1 ignore that packet for now
1433                                 int seqdelta;
1434                                 seqdelta = rcv_buff.seq - rsocket->oursequence;
1435                                 if(seqdelta<0) seqdelta = seqdelta*-1;
1436                                 if(seqdelta>=MAXNETBUFFERS - 1){
1437                                         ml_printf("Received reliable packet out of order!\n");
1438                                         //It's out of order, so we won't ack it, which will mean we will get it again soon.
1439                                         continue;
1440                                 }
1441                                 //else move data into the proper buffer position
1442                                 int savepacket=1;
1443
1444                                 if(rsocket->oursequence < (0xffff - (MAXNETBUFFERS-1))){
1445                                         if (rsocket->oursequence > rcv_buff.seq){
1446                                                 savepacket = 0;
1447                                         }
1448                                 } else {
1449                                         //Sequence is high, so prepare for wrap around
1450                                         if( ((unsigned short)(rcv_buff.seq + rsocket->oursequence)) > (MAXNETBUFFERS-1)){
1451                                                 savepacket = 0;
1452                                         }
1453                                 }
1454
1455                                 for(i=0; i<MAXNETBUFFERS; i++){
1456                                         if( (NULL != rsocket->rbuffers[i]) && (rsocket->rsequence[i] == rcv_buff.seq)){
1457                                                 //Received duplicate packet!
1458                                                 savepacket = 0;
1459                                         }
1460                                 }
1461                                 if(savepacket){
1462                                         for(i=0; i<MAXNETBUFFERS; i++){
1463                                                 if(NULL == rsocket->rbuffers[i]){
1464                                                         if(rcv_buff.data_len>max_len){
1465                                                                 rsocket->recv_len[i] = rcv_buff.data_len;
1466                                                         } else {
1467                                                                 rsocket->recv_len[i] = rcv_buff.data_len;
1468                                                         }
1469                                                         rsocket->rbuffers[i] = (reliable_net_rcvbuffer *)malloc(sizeof(reliable_net_rcvbuffer));
1470                                                         memcpy(rsocket->rbuffers[i]->buffer,rcv_buff.data,rsocket->recv_len[i]);
1471                                                         rsocket->rsequence[i] = rcv_buff.seq;
1472                                                         break;
1473                                                 }
1474                                         }
1475                                 }
1476                                 psnet_rel_send_ack(&rsocket->addr, rcv_buff.seq, link_type, rcv_buff.send_time);
1477                         }
1478
1479                 }
1480         } while (udp_has_data > 0);
1481
1482         // Go through each reliable socket that is connected and do any needed work.
1483         for(j=0; j<MAXRELIABLESOCKETS; j++){
1484                 rsocket=&Reliable_sockets[j];
1485
1486                 if(Serverconn == 0xffffffff){
1487                         if(rsocket->status==RNF_LIMBO){
1488                                 if(fl_abs((psnet_get_time() - rsocket->last_packet_received))>Nettimeout){
1489                                         ml_printf("Reliable (but in limbo) socket (%d) timed out in nw_WorkReliable().\n",j);
1490                                         memset(rsocket,0,sizeof(reliable_socket));
1491                                         rsocket->status = RNF_UNUSED;//Won't work if this is an outgoing connection.
1492                                 }
1493                         }
1494                 } else {
1495                         if((rsocket->status == RNF_LIMBO) && (fl_abs((psnet_get_time() - First_sent_iamhere)) > Nettimeout)){
1496                                 rsocket->status = RNF_BROKEN;
1497                                 ml_printf("Reliable socket (%d) timed out in nw_WorkReliable().\n",j);
1498                         }
1499                 }
1500
1501                 if(rsocket->status == RNF_CONNECTED){
1502                         float retry_packet_time;
1503                         if((rsocket->mean_ping==0) || (rsocket->mean_ping > (NETRETRYTIME*4))){
1504                                 retry_packet_time = NETRETRYTIME;
1505                         } else {
1506                                 if(rsocket->mean_ping<MIN_NET_RETRYTIME) {
1507                                         retry_packet_time = (float)MIN_NET_RETRYTIME;
1508                                 } else {
1509                                         retry_packet_time = ((float)(float)rsocket->mean_ping * (float)1.25);
1510                                 }
1511                         }
1512                         //Iterate through send buffers.
1513                         for(i=0;i<MAXNETBUFFERS;i++){
1514                                 // send again
1515                                 if((rsocket->sbuffers[i]) && (fl_abs((psnet_get_time() - rsocket->timesent[i])) >= retry_packet_time)) {
1516                                         reliable_header send_header;
1517                                         send_header.send_time = psnet_get_time();
1518                                         send_header.send_time = INTEL_FLOAT( send_header.send_time );
1519                                         send_header.seq = INTEL_SHORT( rsocket->ssequence[i] );
1520                                         memcpy(send_header.data,rsocket->sbuffers[i]->buffer,rsocket->send_len[i]);
1521                                         send_header.data_len = INTEL_SHORT( (ushort)rsocket->send_len[i] );
1522                                         send_header.type = RNT_DATA;
1523                                         if(rsocket->connection_type == NET_TCP){
1524                                                 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1525                                         }
1526                                         if((rcode == SOCKET_ERROR) && (WSAEWOULDBLOCK == WSAGetLastError())){
1527                                                 //The packet didn't get sent, flag it to try again next frame
1528                                                 rsocket->timesent[i] = psnet_get_time()-(NETRETRYTIME*4);
1529                                         } else {
1530                                                 rsocket->last_packet_sent = psnet_get_time();
1531                                                 rsocket->timesent[i] = psnet_get_time();
1532                                         }
1533
1534                                 }//getcwd
1535                         }
1536
1537                         if((rsocket->status == RNF_CONNECTED) && (fl_abs((psnet_get_time() - rsocket->last_packet_sent)) > NETHEARTBEATTIME)) {
1538                                 reliable_header send_header;
1539                                 send_header.send_time = psnet_get_time();
1540                                 send_header.send_time = INTEL_FLOAT( send_header.send_time );
1541                                 send_header.seq = 0;
1542                                 send_header.data_len = 0;
1543                                 send_header.type = RNT_HEARTBEAT;
1544
1545                                 rcode = -1;
1546                                 if(rsocket->connection_type == NET_TCP){
1547                                         rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&rsocket->addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1548                                 }
1549                                 if((rcode != SOCKET_ERROR) && (WSAEWOULDBLOCK != WSAGetLastError())){
1550                                         //It must have been sent
1551                                         rsocket->last_packet_sent = psnet_get_time();
1552                                 }
1553                         }
1554
1555                         if((rsocket->status == RNF_CONNECTED) && (fl_abs((psnet_get_time() - rsocket->last_packet_received))>Nettimeout)){
1556                                 //This socket is hosed.....inform someone?
1557                                 ml_printf("Reliable Socket (%d) timed out in nw_WorkReliable().\n",j);
1558                                 rsocket->status = RNF_BROKEN;
1559                         }
1560                 }
1561         }
1562 }
1563
1564 // get the status of a reliable socket, see RNF_* defines above
1565 int psnet_rel_get_status(PSNET_SOCKET_RELIABLE socketid)
1566 {
1567         if(socketid >= MAXRELIABLESOCKETS){
1568                 return -1;
1569         }
1570
1571         return Reliable_sockets[socketid].status;
1572 }
1573
1574 // function which checks the Listen_socket for possibly incoming requests to be connected.
1575 // returns 0 on error or nothing waiting.  1 if we should try to accept
1576 int psnet_rel_check_for_listen(net_addr_t *from_addr)
1577 {
1578         struct sockaddr_in *ip_addr;                            // UDP/TCP socket structure
1579
1580         psnet_rel_work();
1581         int i;
1582         for(i=1; i<MAXRELIABLESOCKETS; i++){
1583                 if(Reliable_sockets[i].status == RNF_CONNECTING){
1584                         Reliable_sockets[i].status = RNF_CONNECTED;
1585                         //memcpy(from_addr,&reliable_sockets[i].addr,sizeof(struct sockaddr));
1586                         ml_printf("New reliable connection in nw_CheckListenSocket().\n");
1587
1588                         if (Reliable_sockets[i].connection_type != NET_TCP) {
1589                                 continue;
1590                         }
1591
1592                         ip_addr = (struct sockaddr_in *)&Reliable_sockets[i].addr;
1593                         memset(from_addr, 0x00, sizeof(net_addr_t));
1594                         from_addr->port = ntohs( ip_addr->sin_port );
1595                         from_addr->type = NET_TCP;
1596                         memcpy(from_addr->addr, &ip_addr->sin_addr.s_addr, 4);
1597
1598                         /*
1599                         char dbg_output[50];
1600                         nw_GetNumbersFromHostAddress(from_addr,dbg_output);
1601                         mprintf((0,"Got address from: %s\n",dbg_output));
1602                         */
1603                         return i;
1604                 }
1605         }
1606         return INVALID_SOCKET;
1607 }
1608
1609 // attacmpt to connect() to the server's tcp socket.  socket parameter is simply assigned to the
1610 // Reliable_socket socket created in psnet_init
1611 void psnet_rel_connect_to_server(PSNET_SOCKET *socket, net_addr_t *server_addr)
1612 {
1613         //Send out a RNT_REQ_CONN packet, and wait for it to be acked.
1614         struct sockaddr_in sockaddr;                            // UDP/TCP socket structure
1615         struct sockaddr *addr = NULL;                                           // pointer to struct sockaddr to make coding easier
1616         struct sockaddr rcv_addr;
1617         int addrlen;
1618         ubyte iaddr[4];
1619         ushort port;
1620 //      float time_sent_req = 0;
1621         float first_sent_req = 0;
1622         static reliable_header conn_header;
1623         static reliable_header ack_header;
1624         int bytesin;
1625         struct timeval timeout;
1626         fd_set read_fds;
1627         int i;
1628         *socket = INVALID_SOCKET;
1629
1630         memcpy(iaddr, &server_addr->addr, 4);
1631         port = (ushort)(server_addr->port);     // Talk to the server listen port
1632
1633         conn_header.type = RNT_REQ_CONN;
1634         conn_header.seq = CONNECTSEQ;
1635         conn_header.data_len = 0;
1636
1637         timeout.tv_sec=0;
1638         timeout.tv_usec=0;
1639
1640         if (server_addr->type != NET_TCP) {
1641                 return;
1642         }
1643
1644         SDL_assert(Tcp_active);
1645
1646         //Flush out any left overs
1647         FD_ZERO(&read_fds);
1648         FD_SET(Unreliable_socket, &read_fds);
1649         while(SELECT(Unreliable_socket+1, &read_fds, NULL, NULL, &timeout, PSNET_TYPE_RELIABLE)){
1650                 addrlen = sizeof(struct sockaddr);
1651                 bytesin = RECVFROM(Unreliable_socket, (char *)&ack_header,sizeof(reliable_header),0,(struct sockaddr *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1652                 if(bytesin==-1){
1653                         //Int3();//See Kevin
1654                         ml_printf("UDP recvfrom returned an error! -- %d\n",WSAGetLastError());
1655                         break;
1656                         //return;
1657                 }
1658                 FD_ZERO(&read_fds);
1659                 FD_SET(Unreliable_socket, &read_fds);
1660         }
1661
1662         memset(&ack_header,0,sizeof(reliable_header));
1663         bytesin = 0;
1664         SOCKET typeless_sock = 0;
1665         net_addr_t d3_rcv_addr;
1666         memset(&d3_rcv_addr,0,sizeof(net_addr_t));
1667
1668
1669         sockaddr.sin_family = AF_INET;
1670         memcpy(&sockaddr.sin_addr.s_addr, iaddr, 4);
1671         sockaddr.sin_port = htons(port);
1672         addr = (struct sockaddr *)&sockaddr;
1673         if( SOCKET_ERROR == SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE) ){
1674                 ml_printf("Unable to send UDP packet in nw_ConnectToServer()! -- %d\n",WSAGetLastError());
1675                 return;
1676         }
1677         memcpy(d3_rcv_addr.addr, &sockaddr.sin_addr.s_addr, 4);
1678         d3_rcv_addr.port = sockaddr.sin_port;
1679         d3_rcv_addr.type = NET_TCP;
1680         typeless_sock = Unreliable_socket;
1681
1682
1683         first_sent_req = psnet_get_time();
1684 //      time_sent_req = psnet_get_time();
1685
1686         //Wait until we get a response from the server or we timeout
1687
1688         do {
1689                 PSNET_TOP_LAYER_PROCESS();
1690
1691                 FD_ZERO(&read_fds);
1692                 FD_SET(typeless_sock, &read_fds);
1693                 if(SELECT(typeless_sock+1, &read_fds, NULL,NULL,&timeout, PSNET_TYPE_RELIABLE)){
1694                         ml_string("selected() in psnet_rel_connect_to_server()");
1695
1696                         addrlen = sizeof(struct sockaddr);
1697                         bytesin = RECVFROM(typeless_sock,(char *)&ack_header,sizeof(reliable_header),0,(struct sockaddr *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1698                         if(bytesin==-1){
1699                                 ml_printf("recvfrom returned an error! -- %d\n",WSAGetLastError());
1700                                 Int3();//See Kevin
1701                                 return;
1702                         }
1703
1704                         ml_string("received data after select in psnet_rel_connect_to_server()");
1705                         if(bytesin){
1706                                 ml_string("about to check ack_header.type");
1707                                 if(ack_header.type == RNT_ACK){
1708                                         short *acknum = (short *)&ack_header.data;
1709                                         if(*acknum == CONNECTSEQ){
1710                                                 for(i=1; i<MAXRELIABLESOCKETS; i++){
1711                                                         if(Reliable_sockets[i].status==RNF_UNUSED){
1712                                                                 //Add the new connection here.
1713                                                                 memset(&Reliable_sockets[i],0,sizeof(reliable_socket));
1714                                                                 Reliable_sockets[i].connection_type = (ubyte)server_addr->type;
1715                                                                 memcpy(&Reliable_sockets[i].net_addr,&d3_rcv_addr,sizeof(net_addr_t));
1716                                                                 Reliable_sockets[i].last_packet_received = psnet_get_time();
1717                                                                 memcpy(&Reliable_sockets[i].addr,&rcv_addr,sizeof(struct sockaddr));
1718                                                                 Reliable_sockets[i].status = RNF_LIMBO;
1719                                                                 *socket = i;
1720                                                                 ml_printf("Succesfully connected to server in nw_ConnectToServer().\n");
1721                                                                 //Now send I_AM_HERE packet
1722                                                                 conn_header.type = RNT_I_AM_HERE;
1723                                                                 conn_header.seq = (ushort)(~CONNECTSEQ);
1724                                                                 conn_header.data_len = 0;
1725                                                                 Serverconn = i;
1726                                                                 First_sent_iamhere = psnet_get_time();
1727                                                                 Last_sent_iamhere = psnet_get_time();
1728                                                                 int rcode = SENDTO(typeless_sock,(char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1729                                                                 if(rcode == SOCKET_ERROR){
1730                                                                         *socket = INVALID_SOCKET;
1731                                                                         Reliable_sockets[i].status = RNF_UNUSED;
1732                                                                         memset(&Reliable_sockets[i],0,sizeof(reliable_socket));
1733                                                                         ml_printf("Unable to send packet in nw_ConnectToServer()\n");
1734                                                                         return;
1735                                                                 }
1736                                                                 Reliable_sockets[i].last_packet_sent = psnet_get_time();
1737                                                                 float f;
1738                                                                 f = psnet_get_time();
1739                                                                 while((fl_abs((psnet_get_time() - f))<2) && (Reliable_sockets[i].status != RNF_CONNECTING)){
1740                                                                         psnet_rel_work();
1741                                                                 }
1742
1743                                                                 return;
1744                                                         }
1745                                                 }
1746                                                 ml_printf("Out of reliable socket space in nw_ConnectToServer().\n");
1747                                                 return;
1748                                         } else ml_printf("Received out of sequence ACK in nw_ConnectToServer().\n");
1749                                 } else ml_printf("Received something that isn't an ACK in nw_ConnectToServer().\n");
1750                         } else ml_printf("Received 0 bytes from recvfrom() in nw_ConnectToServer().\n");
1751                 }
1752                 /*
1753                 if((psnet_get_time()-time_sent_req)>2)
1754                 {
1755                         ml_printf("Resending connect request.\n");
1756                         int ret = SENDTO(typeless_sock,(char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(struct sockaddr), PSNET_TYPE_RELIABLE);
1757                         if(ret != SOCKET_ERROR){
1758                                 time_sent_req = psnet_get_time();
1759                         } else {
1760                                 ml_printf("Error sending connection request! -- %d\n",WSAGetLastError() );
1761                         }
1762                 }
1763                 */
1764
1765         } while(fl_abs((psnet_get_time() - first_sent_req)) < RELIABLE_CONNECT_TIME);
1766 }
1767
1768 // returns the ip address of this computer
1769 /*
1770 int psnet_rel_get_ip()
1771 {
1772         char local[255];
1773         LPHOSTENT hostent;
1774         struct sockaddr_in local_address;
1775         int ret;
1776
1777         // Get the local host name
1778         memset(&local_address, 0, sizeof(local_address));
1779         ret = gethostname(local, 255 );
1780         if (ret != SOCKET_ERROR ){
1781                 // Resolve host name for local address
1782                 hostent = gethostbyname((char *)local);
1783                 if ( hostent ){
1784                         local_address.sin_addr.s_addr = *((u_long FAR *)(hostent->h_addr));
1785                 }
1786         } else {
1787                 ml_string("SOCKET_ERROR in psnet_rel_get_ip()!");
1788         }
1789         ml_printf(%s:%d\n", inet_ntoa(rcvaddr->sin_addr), htons(rcvaddr->sin_port)
1790         return local_address.sin_addr.s_addr;
1791 }
1792 */
1793
1794 // returns the ip address of this computer
1795 int psnet_get_ip()
1796 {
1797         struct sockaddr_in local_address;
1798
1799         if(Psnet_connection == NETWORK_CONNECTION_DIALUP){
1800                 local_address.sin_addr.s_addr = psnet_ras_status();
1801                 if(local_address.sin_addr.s_addr == INADDR_NONE){
1802                         local_address.sin_addr.s_addr = INADDR_ANY;
1803                 }
1804         } else {
1805                 // Init local address to zero
1806                 local_address.sin_addr.s_addr = INADDR_ANY;
1807         }
1808
1809         // NOTE: for memeory checkers, do NOT try to free this
1810         ml_printf("psnet_get_ip() reports IP : %s\n", inet_ntoa(local_address.sin_addr));
1811
1812         return local_address.sin_addr.s_addr;
1813 }
1814
1815 // initialize reliable sockets
1816 int psnet_init_rel_tcp(int port, int should_listen)
1817 {
1818         /*
1819         struct sockaddr_in sockaddr;
1820
1821         sockaddr.sin_port = htons((ushort)port);
1822         sockaddr.sin_family = AF_INET;
1823         unsigned int my_ip;
1824         ml_printf("Setting up reliable sockets.\n");
1825
1826         my_ip = psnet_get_ip();
1827
1828         memcpy(&sockaddr.sin_addr.s_addr, &my_ip, sizeof(uint));
1829
1830         Reliable_UDP_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP );
1831         if(INVALID_SOCKET == Reliable_UDP_socket){
1832                 ml_printf("Unable to create reliable UDP socket -- %d\n", WSAGetLastError() );
1833
1834                 return 0;
1835         } else if(bind(Reliable_UDP_socket,(struct sockaddr *)&sockaddr,sizeof(struct sockaddr))!=0){
1836                 ml_printf("Unable to bind reliable socket -- %d\n", WSAGetLastError() );
1837
1838                 return 0;
1839         }
1840
1841         // make any reliable sockets which we create that aren't listening non-blocking sockets
1842         int error;
1843         unsigned long arg;
1844
1845         arg = TRUE;
1846         error = ioctlsocket( Reliable_UDP_socket, FIONBIO, &arg );
1847         if ( error == SOCKET_ERROR ) {
1848                 ml_printf("Unable to make reliable UDP socket non-blocking -- %d\n", WSAGetLastError() );
1849
1850                 return 0;
1851         }
1852         */
1853
1854         // success
1855         return 1;
1856 }
1857
1858 void psnet_rel_close()
1859 {
1860         int idx;
1861         PSNET_SOCKET_RELIABLE sock;
1862
1863         // kill all sockets
1864         for(idx=0; idx<MAXRELIABLESOCKETS; idx++){
1865                 if(Reliable_sockets[idx].status != RNF_UNUSED){
1866                         sock = idx;
1867                         psnet_rel_close_socket(&sock);
1868                 }
1869         }
1870 }
1871
1872 // ------------------------------------------------------------------------------------------------------
1873 // PACKET BUFFERING FUNCTIONS
1874 //
1875
1876 // initialize the buffering system
1877 void psnet_buffer_init(network_packet_buffer_list *l)
1878 {
1879         int idx;
1880
1881         // blast the buffer clean
1882         memset(l->psnet_buffers, 0, sizeof(network_packet_buffer) * MAX_PACKET_BUFFERS);
1883
1884         // set all buffer sequence #'s to -1
1885         for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
1886                 l->psnet_buffers[idx].sequence_number = -1;
1887         }
1888
1889         // initialize the sequence #
1890         l->psnet_seq_number = 0;
1891         l->psnet_lowest_id = -1;
1892         l->psnet_highest_id = -1;
1893 }
1894
1895 // buffer a packet (maintain order!)
1896 void psnet_buffer_packet(network_packet_buffer_list *l, ubyte *data, int length, net_addr_t *from)
1897 {
1898         int idx;
1899         int found_buf = 0;
1900
1901         // find the first empty packet
1902         for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
1903                 if(l->psnet_buffers[idx].sequence_number == -1){
1904                         found_buf = 1;
1905                         break;
1906                 }
1907         }
1908
1909         // if we didn't find the buffer, report an overrun
1910         if(!found_buf){
1911                 ml_printf("WARNING - Buffer overrun in psnet\n");
1912         } else {
1913                 // copy in the data
1914                 memcpy(l->psnet_buffers[idx].data, data, length);
1915                 l->psnet_buffers[idx].len = length;
1916                 memcpy(&l->psnet_buffers[idx].from_addr, from, sizeof(net_addr_t));
1917                 l->psnet_buffers[idx].sequence_number = l->psnet_seq_number;
1918
1919                 // keep track of the highest id#
1920                 l->psnet_highest_id = l->psnet_seq_number++;
1921
1922                 // set the lowest id# for the first time
1923                 if(l->psnet_lowest_id == -1){
1924                         l->psnet_lowest_id = l->psnet_highest_id;
1925                 }
1926         }
1927 }
1928
1929 // get the index of the next packet in order!
1930 int psnet_buffer_get_next(network_packet_buffer_list *l, ubyte *data, int *length, net_addr_t *from)
1931 {
1932         int idx;
1933         int found_buf = 0;
1934
1935         // if there are no buffers, do nothing
1936         if((l->psnet_lowest_id == -1) || (l->psnet_lowest_id > l->psnet_highest_id)){
1937                 return 0;
1938         }
1939
1940         // search until we find the lowest packet index id#
1941         for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
1942                 // if we found the buffer
1943                 if(l->psnet_buffers[idx].sequence_number == l->psnet_lowest_id){
1944                         found_buf = 1;
1945                         break;
1946                 }
1947         }
1948
1949         // at this point, we should _always_ have found the buffer
1950         SDL_assert(found_buf);
1951
1952         // copy out the buffer data
1953         memcpy(data, l->psnet_buffers[idx].data, l->psnet_buffers[idx].len);
1954         *length = l->psnet_buffers[idx].len;
1955         memcpy(from, &l->psnet_buffers[idx].from_addr, sizeof(net_addr_t));
1956
1957         // now we need to cleanup the packet list
1958
1959         // mark the buffer as free
1960         l->psnet_buffers[idx].sequence_number = -1;
1961         l->psnet_lowest_id++;
1962
1963         return 1;
1964 }
1965
1966 // -------------------------------------------------------------------------------------------------------
1967 // PSNET 2 FORWARD DEFINITIONS
1968 //
1969
1970 // if the string is a legally formatted ip string
1971 int psnet_is_valid_numeric_ip(char *ip)
1972 {
1973         char *token;
1974         char copy[100];
1975         int val1,val2,val3,val4;
1976
1977         // get the first ip value
1978         SDL_strlcpy(copy, ip, SDL_arraysize(copy));
1979         token = strtok(copy,".");
1980         if(token == NULL){
1981                 return 0;
1982         } else {
1983                 // get the value of the token
1984                 val1 = atoi(token);
1985                 if((val1 < 0) || (val1 > 255)){
1986                         return 0;
1987                 }
1988         }
1989
1990         // second ip value
1991         token = strtok(NULL,".");
1992         if(token == NULL){
1993                 return 0;
1994         } else {
1995                 // get the value of the token
1996                 val2 = atoi(token);
1997                 if((val2 < 0) || (val2 > 255)){
1998                         return 0;
1999                 }
2000         }
2001
2002         // third ip value
2003         token = strtok(NULL,".");
2004         if(token == NULL){
2005                 return 0;
2006         } else {
2007                 // get the value of the token
2008                 val3 = atoi(token);
2009                 if((val3 < 0) || (val3 > 255)){
2010                         return 0;
2011                 }
2012         }
2013
2014         // third ip value
2015         token = strtok(NULL,"");
2016         if(token == NULL){
2017                 return 0;
2018         } else {
2019                 // get the value of the token
2020                 val4 = atoi(token);
2021                 if((val4 < 0) || (val4 > 255)){
2022                         return 0;
2023                 }
2024         }
2025
2026         // make sure he hasn't entered all 0's
2027         if((val1 == 0) && (val2 == 0) && (val3 == 0) && (val4 == 0)){
2028                 return 0;
2029         }
2030
2031         // valid
2032         return 1;
2033 }
2034
2035 // function called from high level FreeSpace code to determine the status of the networking
2036 // code returns one of a handful of macros
2037 #ifndef PLAT_UNIX
2038 DWORD (__stdcall *pRasEnumConnections)(LPRASCONN lprasconn, LPDWORD lpcb, LPDWORD lpcConnections) = NULL;
2039 DWORD (__stdcall *pRasGetConnectStatus)(HRASCONN hrasconn, LPRASCONNSTATUS lprasconnstatus ) = NULL;
2040 DWORD (__stdcall *pRasGetProjectionInfo)(HRASCONN hrasconn, RASPROJECTION rasprojection, LPVOID lpprojection, LPDWORD lpcb ) = NULL;
2041
2042 // functions to get the status of a RAS connection
2043 unsigned int psnet_ras_status()
2044 {
2045         int rval;
2046         unsigned long size, num_connections, i;
2047         RASCONN rasbuffer[25];
2048         HINSTANCE ras_handle;
2049         unsigned long rasip=0;
2050         RASPPPIP projection;
2051         // int Ras_connected;
2052
2053         Ras_connected = 0;
2054
2055         // first, call a LoadLibrary to load the RAS api
2056         ras_handle = LoadLibrary( (LPCWSTR)"rasapi32.dll" );
2057         if ( ras_handle == NULL ) {
2058                 return INADDR_ANY;
2059         }
2060
2061         pRasEnumConnections = (DWORD (__stdcall *)(LPRASCONN, LPDWORD, LPDWORD))GetProcAddress(ras_handle, "RasEnumConnectionsA");
2062         if (!pRasEnumConnections)       {
2063                 FreeLibrary( ras_handle );
2064                 return INADDR_ANY;
2065         }
2066         pRasGetConnectStatus = (DWORD (__stdcall *)(HRASCONN, LPRASCONNSTATUS))GetProcAddress(ras_handle, "RasGetConnectStatusA");
2067         if (!pRasGetConnectStatus)      {
2068                 FreeLibrary( ras_handle );
2069                 return INADDR_ANY;
2070         }
2071         pRasGetProjectionInfo = (DWORD (__stdcall *)(HRASCONN, RASPROJECTION, LPVOID, LPDWORD))GetProcAddress(ras_handle, "RasGetProjectionInfoA");
2072         if (!pRasGetProjectionInfo)     {
2073                 FreeLibrary( ras_handle );
2074                 return INADDR_ANY;
2075         }
2076
2077         size = sizeof(rasbuffer);
2078         rasbuffer[0].dwSize = sizeof(RASCONN);
2079
2080         rval = pRasEnumConnections( rasbuffer, &size, &num_connections );
2081         if ( rval ) {
2082                 FreeLibrary( ras_handle );
2083                 return INADDR_ANY;
2084         }
2085
2086         // JAS: My computer gets to this point, but I have no RAS connections,
2087         // so just exit
2088         if ( num_connections < 1 )      {
2089                 ml_string("Found no RAS connections");
2090                 FreeLibrary( ras_handle );
2091                 return INADDR_ANY;
2092         }
2093
2094         ml_printf("Found %d connections", num_connections);
2095
2096         for (i = 0; i < num_connections; i++ ) {
2097                 RASCONNSTATUS status;
2098                 unsigned long size;
2099
2100                 ml_printf("Connection %d:", i);
2101                 ml_printf("Entry Name: %s", rasbuffer[i].szEntryName);
2102                 ml_printf("Device Type: %s", rasbuffer[i].szDeviceType);
2103                 ml_printf("Device Name: %s", rasbuffer[i].szDeviceName);
2104
2105                 // get the connection status
2106                 status.dwSize = sizeof(RASCONNSTATUS);
2107                 rval = pRasGetConnectStatus(rasbuffer[i].hrasconn, &status);
2108                 if ( rval != 0 ) {
2109                         FreeLibrary( ras_handle );
2110                         return INADDR_ANY;
2111                 }
2112
2113                 // get the projection informatiom
2114                 size = sizeof(projection);
2115                 projection.dwSize = size;
2116                 rval = pRasGetProjectionInfo(rasbuffer[i].hrasconn, RASP_PppIp, &projection, &size );
2117                 if ( rval != 0 ) {
2118                         FreeLibrary( ras_handle );
2119                         return INADDR_ANY;
2120                 }
2121
2122                 ml_printf("IP Address: %s", projection.szIpAddress);
2123         }
2124
2125         Ras_connected = 1;
2126
2127         FreeLibrary( ras_handle );
2128         rasip = inet_addr((const char *)projection.szIpAddress);
2129         if(rasip==INADDR_NONE){
2130                 return INADDR_ANY;
2131         }
2132
2133         //The ip of the RAS connection
2134         return rasip;
2135 }
2136 #else
2137 unsigned int psnet_ras_status()
2138 {
2139         STUB_FUNCTION;
2140
2141         return INADDR_ANY;
2142 }
2143 #endif
2144
2145 // functions to get the status of a RAS connection
2146 /*
2147 void psnet_ras_status()
2148 {
2149         int rval;
2150         unsigned long size, num_connections, i;
2151         RASCONN rasbuffer[25];
2152         HINSTANCE ras_handle;
2153
2154         Ras_connected = 0;
2155
2156         // first, call a LoadLibrary to load the RAS api
2157         ras_handle = LoadLibrary( NOX("rasapi32.dll") );
2158         if ( ras_handle == NULL ) {
2159                 return;
2160         }
2161
2162         pRasEnumConnections = (DWORD (__stdcall *)(LPRASCONN, LPDWORD, LPDWORD))GetProcAddress(ras_handle, NOX("RasEnumConnectionsA"));
2163         if (!pRasEnumConnections)       {
2164                 FreeLibrary( ras_handle );
2165                 return;
2166         }
2167         pRasGetConnectStatus = (DWORD (__stdcall *)(HRASCONN, LPRASCONNSTATUS))GetProcAddress(ras_handle, NOX("RasGetConnectStatusA"));
2168         if (!pRasGetConnectStatus)      {
2169                 FreeLibrary( ras_handle );
2170                 return;
2171         }
2172         pRasGetProjectionInfo = (DWORD (__stdcall *)(HRASCONN, RASPROJECTION, LPVOID, LPDWORD))GetProcAddress(ras_handle, NOX("RasGetProjectionInfoA"));
2173         if (!pRasGetProjectionInfo)     {
2174                 FreeLibrary( ras_handle );
2175                 return;
2176         }
2177
2178         size = sizeof(rasbuffer);
2179         rasbuffer[0].dwSize = sizeof(RASCONN);
2180
2181         rval = pRasEnumConnections( rasbuffer, &size, &num_connections );
2182         if ( rval ) {
2183                 FreeLibrary( ras_handle );
2184                 return;
2185         }
2186
2187         // JAS: My computer gets to this point, but I have no RAS connections,
2188         // so just exit
2189         if ( num_connections < 1 )      {
2190                 ml_printf("Found no connections\n" );
2191                 FreeLibrary( ras_handle );
2192                 return;
2193         }
2194
2195         ml_printf("Found %d connections\n", num_connections);
2196
2197         for (i = 0; i < num_connections; i++ ) {
2198                 RASCONNSTATUS status;
2199                 RASPPPIP projection;
2200                 unsigned long size;
2201
2202                 ml_printf("Connection %d:\n", i);
2203                 ml_printf("Entry Name: %s\n", rasbuffer[i].szEntryName);
2204                 ml_printf("Device Type: %s\n", rasbuffer[i].szDeviceType);
2205                 ml_printf("Device Name: %s\n", rasbuffer[i].szDeviceName);
2206
2207                 // get the connection status
2208                 status.dwSize = sizeof(RASCONNSTATUS);
2209                 rval = pRasGetConnectStatus(rasbuffer[i].hrasconn, &status);
2210                 if ( rval != 0 ) {
2211                         FreeLibrary( ras_handle );
2212                         return;
2213                 }
2214
2215                 ml_printf("\tStatus: %s\n", (status.rasconnstate==RASCS_Connected)?"Connected":"Not Connected");
2216
2217                 // get the projection informatiom
2218                 size = sizeof(projection);
2219                 projection.dwSize = size;
2220                 rval = pRasGetProjectionInfo(rasbuffer[i].hrasconn, RASP_PppIp, &projection, &size );
2221                 if ( rval != 0 ) {
2222                         FreeLibrary( ras_handle );
2223                         return;
2224                 }
2225
2226                 ml_printf("IP Address: %s", projection.szIpAddress));
2227         }
2228
2229         Ras_connected = 1;
2230
2231         FreeLibrary( ras_handle );
2232 }
2233 */
2234
2235 // set some options on a socket
2236 void psnet_socket_options( SOCKET sock )
2237 {
2238         int broadcast;//, ret;
2239 #ifndef PLAT_UNIX
2240         int cursize, cursizesize, bufsize;
2241 #else
2242         socklen_t cursize, cursizesize, bufsize;
2243 #endif
2244
2245         // Set the mode of the socket to allow broadcasting
2246         broadcast = 1;
2247         if(setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char *)&broadcast, sizeof(broadcast) )){
2248                 Can_broadcast = 0;
2249         } else {
2250                 Can_broadcast = 1;
2251         }
2252
2253         // reuseaddr
2254         // setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&broadcast, sizeof(broadcast) );
2255
2256         // try and increase the size of my receive buffer
2257         bufsize = MAX_RECEIVE_BUFSIZE;
2258
2259         // set the current size of the receive buffer
2260         cursizesize = sizeof(int);
2261         getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&cursize, &cursizesize);
2262         // for ( trysize = bufsize; trysize >= cursize; trysize >>= 1 ) {
2263         /*ret =*/ setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&bufsize, sizeof(bufsize));
2264         /*if ( ret == SOCKET_ERROR ) {
2265                 int wserr;
2266
2267                 wserr = WSAGetLastError();
2268                 // if ( (wserr == WSAENOPROTOOPT) || (wserr == WSAEINVAL) )
2269                         // break;
2270         }*/
2271         // }
2272         getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&cursize, &cursizesize);
2273         ml_printf("Receive buffer set to %d\n", cursize);
2274
2275         // set the current size of the send buffer
2276         cursizesize = sizeof(int);
2277         getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&cursize, &cursizesize);
2278         // for ( trysize = bufsize; trysize >= cursize; trysize >>= 1 ) {
2279         /*ret =*/ setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&bufsize, sizeof(bufsize));
2280         /*if ( ret == SOCKET_ERROR ) {
2281                 int wserr;
2282
2283                 wserr = WSAGetLastError();
2284                 // if ( (wserr == WSAENOPROTOOPT) || (wserr == WSAEINVAL) ){
2285                         // break;
2286                 // }
2287         }*/
2288         getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char *)&cursize, &cursizesize);
2289         ml_printf("Send buffer set to %d\n", cursize);
2290 }
2291
2292 // initialize tcp socket
2293 int psnet_init_tcp()
2294 {
2295         struct sockaddr_in sockaddr;
2296
2297         TCP_socket = INVALID_SOCKET;
2298
2299         TCP_socket = socket( AF_INET, SOCK_DGRAM, 0 );
2300         if ( TCP_socket == (int)INVALID_SOCKET ) {
2301                 Tcp_failure_code = WSAGetLastError();
2302                 ml_printf("Error on TCP startup %d\n", Tcp_failure_code);
2303                 return 0;
2304         }
2305
2306         // bind the socket
2307         memset(&sockaddr,0,sizeof(struct sockaddr_in));
2308         sockaddr.sin_family = AF_INET;
2309         sockaddr.sin_addr.s_addr = psnet_get_ip();
2310         sockaddr.sin_port = htons( Psnet_default_port );
2311         if ( bind(TCP_socket, (struct sockaddr*)&sockaddr, sizeof (sockaddr)) == SOCKET_ERROR) {
2312                 Tcp_failure_code = WSAGetLastError();
2313                 ml_printf("Couldn't bind TCP socket (%d)! Invalidating TCP\n", Tcp_failure_code );
2314                 return 0;
2315         }
2316
2317         // set socket options
2318         psnet_socket_options( TCP_socket );
2319         Tcp_can_broadcast = Can_broadcast;
2320
2321         // success
2322         return 1;
2323 }
2324
2325 // get time in seconds
2326 float psnet_get_time()
2327 {
2328         return (float)timer_get_milliseconds() / 1000.0f;
2329 }
2330
2331 // mark a socket as having received data
2332 void psnet_mark_received(PSNET_SOCKET_RELIABLE socket)
2333 {
2334         // valid socket?
2335         if((socket == 0xffffffff) || (socket >= MAXRELIABLESOCKETS)){
2336                 return;
2337         }
2338
2339         // mark it
2340         Reliable_sockets[socket].last_packet_received = psnet_get_time();
2341 }
2342
2343 #endif  //  if PSNET2
2344