2 * $Logfile: /Freespace2/code/Network/Psnet2.cpp $
7 * C file containing application level network-interface.
10 * Revision 1.4 2002/05/26 21:27:53 theoddone33
11 * More progress (I hate psnet2)
13 * Revision 1.3 2002/05/26 20:49:54 theoddone33
16 * Revision 1.2 2002/05/07 03:16:48 theoddone33
17 * The Great Newline Fix
19 * Revision 1.1.1.1 2002/05/03 03:28:10 root
23 * 25 9/14/99 2:21p Dave
24 * Fixed observer mode joining and ingame stuff.
26 * 24 9/10/99 9:44p Dave
27 * Bumped version # up. Make server reliable connects not have such a huge
30 * 23 9/07/99 4:01p Dave
31 * Fixed up a string.tbl paroblem (self destruct message). Make sure IPX
32 * does everything properly (setting up address when binding). Remove
33 * black rectangle background from UI_INPUTBOX.
35 * 22 8/26/99 8:51p Dave
36 * Gave multiplayer TvT messaging a heavy dose of sanity. Cheat codes.
38 * 21 8/16/99 4:06p Dave
39 * Big honking checkin.
41 * 20 7/26/99 5:50p Dave
42 * Revised ingame join. Better? We'll see....
44 * 19 7/20/99 1:49p Dave
45 * Peter Drake build. Fixed some release build warnings.
47 * 18 7/15/99 9:20a Andsager
48 * FS2_DEMO initial checkin
50 * 17 7/03/99 4:08p Dave
51 * Fixed wss_slots size issues. Fixed potentially nasty bug in low level
54 * 16 6/25/99 5:02p Jasenw
55 * Removed old debug code.
57 * 15 6/07/99 9:51p Dave
58 * Consolidated all multiplayer ports into one.
60 * 14 4/30/99 12:18p Dave
61 * Several minor bug fixes.
63 * 13 4/27/99 5:55p Dave
64 * Fixed Ras_connected bug with VSDK code.
66 * 12 4/27/99 2:59p Dave
67 * Potential fix for reliable socket connection problem.
69 * 11 4/23/99 11:07a Dave
70 * Added lots of debug multi.log output to psnet2
72 * 10 4/12/99 10:07p Dave
73 * Made network startup more forgiving. Added checkmarks to dogfight
74 * screen for players who hit commit.
76 * 9 3/10/99 6:50p Dave
77 * Changed the way we buffer packets for all clients. Optimized turret
78 * fired packets. Did some weapon firing optimizations.
80 * 8 3/09/99 6:24p Dave
81 * More work on object update revamping. Identified several sources of
82 * unnecessary bandwidth.
84 * 7 3/08/99 7:03p Dave
85 * First run of new object update system. Looks very promising.
87 * 6 1/24/99 11:37p Dave
88 * First full rev of beam weapons. Very customizable. Removed some bogus
89 * Int3()'s in low level net code.
91 * 5 1/06/99 2:24p Dave
92 * Stubs and release build fixes.
94 * 4 11/20/98 11:16a Dave
95 * Fixed up IPX support a bit. Making sure that switching modes and
96 * loading/saving pilot files maintains proper state.
98 * 3 11/19/98 4:19p Dave
99 * Put IPX sockets back in psnet. Consolidated all multiplayer config
102 * 2 11/19/98 8:04a Dave
103 * Full support for D3-style reliable sockets. Revamped packet lag/loss
104 * system, made it receiver side and at the lowest possible level.
111 #include <windowsx.h>
116 #include <raserror.h>
118 #include <sys/types.h>
119 #include <sys/socket.h>
120 #include <netinet/in.h>
121 #include <arpa/inet.h>
131 #include "multiutil.h"
132 #include "multilag.h"
133 #include "osregistry.h"
135 #include "multi_log.h"
136 #include "multi_rate.h"
141 // -------------------------------------------------------------------------------------------------------
142 // PSNET 2 DEFINES/VARS
145 BOOL Psnet_my_addr_valid;
146 net_addr_t Psnet_my_addr;
148 ubyte Null_address[6];
151 int Can_broadcast; // can we do broadcasting on our socket?
152 int Ipx_can_broadcast = 0;
153 int Tcp_can_broadcast = 0;
159 int Tcp_failure_code = 0;
160 int Ipx_failure_code = 0;
162 int Psnet_connection;
164 ushort Psnet_default_port;
166 // specified their internet connnection type
167 #define NETWORK_CONNECTION_NONE 1
168 #define NETWORK_CONNECTION_DIALUP 2
169 #define NETWORK_CONNECTION_LAN 3
171 // defines and variables to indicate network connection status
172 #define NETWORK_STATUS_NOT_INITIALIZED 1
173 #define NETWORK_STATUS_NO_WINSOCK 2 // winsock failed to initialize
174 #define NETWORK_STATUS_NO_PROTOCOL 3 // TCP/IP doesn't appear to be loaded
175 #define NETWORK_STATUS_NO_RELIABLE 4
176 #define NETWORK_STATUS_RUNNING 5 // everything should be running
178 // defintion of structures that actually leave this machine. psnet_send give us only
179 // the data that we want to send. We will add a header onto this data (packet sequence
180 // number, possibly a checksum). We must include a 2 byte flags variable into both structure
181 // since the receiving end of this packet must know whether or not to checksum the packet.
183 #define MAX_TOP_LAYER_PACKET_SIZE 680
185 // use the pack pragma to pack these structures to 2 byte aligment. Really only needed for
187 #define MAX_PACKET_BUFFERS 75
190 #pragma pack(push, 2)
193 // definition for a non-checksum packet
194 typedef struct network_packet
198 ubyte data[MAX_TOP_LAYER_PACKET_SIZE];
199 } network_naked_packet;
201 // structure definition for our packet buffers
202 typedef struct network_packet_buffer
206 net_addr_t from_addr;
207 ubyte data[MAX_TOP_LAYER_PACKET_SIZE];
208 } network_packet_buffer;
210 // struct for a bunch of network packet buffers
211 typedef struct network_packet_buffer_list {
212 network_packet_buffer psnet_buffers[MAX_PACKET_BUFFERS];
213 int psnet_seq_number;
215 int psnet_highest_id;
216 } network_packet_buffer_list;
223 #define MAXHOSTNAME 128
225 #define MAX_RECEIVE_BUFSIZE 4096 // 32 K, eh?
226 #define MAX_SEND_RETRIES 20 // number of retries when sending would block
227 #define MAX_LINGER_TIME 0 // in seconds -- when lingering to close a socket
230 //*******************************
231 #define MAXNETBUFFERS 150 // Maximum network buffers (For between network and upper level functions, which is
232 // required in case of out of order packets
233 #define NETRETRYTIME 0.75f // Time after sending before we resend
234 #define MIN_NET_RETRYTIME 0.2f
235 #define NETTIMEOUT 30 // Time after receiving the last packet before we drop that user
236 #define NETHEARTBEATTIME 3 // How often to send a heartbeat
237 #define MAXRELIABLESOCKETS 40 // Max reliable sockets to open at once...
238 #define NETBUFFERSIZE 600 // Max size of a network packet
240 #define RELIABLE_CONNECT_TIME 7 // how long we'll wait for a response when doing a reliable connect
242 int Nettimeout = NETTIMEOUT;
244 // Reliable packet stuff
245 #define RNT_ACK 1 // ACK Packet
246 #define RNT_DATA 2 // Data Packet
247 #define RNT_DATA_COMP 3 // Compressed Data Packet
248 #define RNT_REQ_CONN 4 // Requesting a connection
249 #define RNT_DISCONNECT 5 // Disconnecting a connection
250 #define RNT_HEARTBEAT 6 // Heartbeat -- send every NETHEARTBEATTIME
251 #define RNT_I_AM_HERE 7
254 #pragma pack(push,r_udp)
259 ubyte type; // packet type
261 ushort seq; // sequence packet 0-65535 used for ACKing also
262 ushort data_len; // length of data
263 float send_time; // Time the packet was sent, if an ACK the time the packet being ACK'd was sent.
264 ubyte data[NETBUFFERSIZE]; // Packet data
267 #define RELIABLE_PACKET_HEADER_ONLY_SIZE (sizeof(reliable_header)-NETBUFFERSIZE)
268 #define MAX_PING_HISTORY 10
271 ubyte buffer[NETBUFFERSIZE];
273 } reliable_net_sendbuffer;
276 ubyte buffer[NETBUFFERSIZE];
277 } reliable_net_rcvbuffer;
280 reliable_net_sendbuffer *sbuffers[MAXNETBUFFERS]; // This is an array of pointers for quick sorting
281 unsigned short ssequence[MAXNETBUFFERS]; // This is the sequence number of the given packet
282 float timesent[MAXNETBUFFERS];
283 int send_len[MAXNETBUFFERS];
284 reliable_net_rcvbuffer *rbuffers[MAXNETBUFFERS];
285 int recv_len[MAXNETBUFFERS];
286 unsigned short rsequence[MAXNETBUFFERS]; // This is the sequence number of the given packet
287 float last_packet_received; // For a given connection, this is the last packet we received
288 float last_packet_sent;
289 SOCKADDR addr; // SOCKADDR of our peer
290 ushort status; // Status of this connection
291 unsigned short oursequence; // This is the next sequence number the application is expecting
292 unsigned short theirsequence; // This is the next sequence number the peer is expecting
293 net_addr_t net_addr; // A FS2 network address structure
294 ubyte connection_type; // IPX, IP, modem, etc.
295 float pings[MAX_PING_HISTORY];
297 unsigned int num_ping_samples;
301 reliable_socket Reliable_sockets[MAXRELIABLESOCKETS];
303 // sockets for IPX and TCP (unreliable)
307 // the sockets that the game will use when selecting network type
308 SOCKET Unreliable_socket = INVALID_SOCKET;
311 // SOCKET Reliable_UDP_socket = INVALID_SOCKET;
312 // SOCKET Reliable_IPX_socket = INVALID_SOCKET;
314 float First_sent_iamhere = 0;
315 float Last_sent_iamhere = 0;
317 #define CONNECTSEQ 0x142 // Magic number for starting a connection, just so it isn't 0
319 unsigned int Serverconn = 0xffffffff;
322 #pragma pack(pop,r_udp)
324 //*******************************
327 network_packet_buffer_list Psnet_top_buffers[PSNET_NUM_TYPES];
329 // -------------------------------------------------------------------------------------------------------
330 // PSNET 2 FORWARD DECLARATIONS
333 // if the string is a legally formatted ip string
334 int psnet_is_valid_numeric_ip(char *ip);
336 // functions to get the status of a RAS connection
337 unsigned int psnet_ras_status();
339 // set some options on a socket
340 void psnet_socket_options( SOCKET sock );
342 // initialize ipx socket
343 int psnet_init_ipx();
345 // initialize tcp socket
346 int psnet_init_tcp();
348 // get time in seconds
349 float psnet_get_time();
351 // returns the ip address of this machine. use for calling bind() with to associate with the proper
352 // IP address and network device.
355 // initialize reliable sockets
356 int psnet_init_rel_tcp(int port, int should_listen);
357 int psnet_init_rel_ipx(int port, int should_listen);
359 // shutdown reliable sockets
360 void psnet_rel_close();
362 // initialize the buffering system
363 void psnet_buffer_init(network_packet_buffer_list *l);
365 // buffer a packet (maintain order!)
366 void psnet_buffer_packet(network_packet_buffer_list *l, ubyte *data, int length, net_addr_t *from);
368 // get the index of the next packet in order!
369 int psnet_buffer_get_next(network_packet_buffer_list *l, ubyte *data, int *length, net_addr_t *from);
372 // -------------------------------------------------------------------------------------------------------
373 // PSNET 2 TOP LAYER FUNCTIONS - these functions simply buffer and store packets based upon type (see PSNET_TYPE_* defines)
376 // wrappers around select() and recvfrom() for lagging/losing data
377 int RECVFROM(SOCKET s, char *buf, int len, int flags, sockaddr *from, int *fromlen, int psnet_type)
379 network_packet_buffer_list *l;
385 Assert((psnet_type >= 0) && (psnet_type < PSNET_NUM_TYPES));
386 if((psnet_type < 0) || (psnet_type >= PSNET_NUM_TYPES)){
389 l = &Psnet_top_buffers[psnet_type];
391 // if we have no buffer! The user should have made sure this wasn't the case by calling SELECT()
392 ret = psnet_buffer_get_next(l, (ubyte*)buf, &ret_len, &addr);
398 // otherwise, stuff the outgoing data
399 switch ( Socket_type ) {
404 ((SOCKADDR_IPX*)from)->sa_socket = htons(addr.port);
405 memcpy(((SOCKADDR_IPX*)from)->sa_nodenum, addr.addr, 6);
406 memcpy(((SOCKADDR_IPX*)from)->sa_netnum, addr.net_id, 4);
407 ((SOCKADDR_IPX*)from)->sa_family = AF_IPX;
408 *fromlen = sizeof(SOCKADDR_IPX);
413 ((SOCKADDR_IN*)from)->sin_port = htons(addr.port);
416 //memcpy(&((SOCKADDR_IN*)from)->sin_addr.S_un.S_addr, addr.addr, 4);
418 //memcpy(&((SOCKADDR_IN*)from)->sin_addr.S_un.S_addr, addr.addr, 4);
420 ((SOCKADDR_IN*)from)->sin_family = AF_INET;
421 *fromlen = sizeof(SOCKADDR_IN);
436 // wrappers around select() and recvfrom() for lagging/losing data
437 int SELECT(int nfds, fd_set FAR * readfds, fd_set FAR * writefds, fd_set FAR * exceptfds, struct timeval FAR * timeout, int psnet_type)
439 network_packet_buffer_list *l;
441 // if this is a check for writability, just return the select
442 if(writefds != NULL){
443 return select(nfds, readfds, writefds, exceptfds, timeout);
447 Assert((psnet_type >= 0) && (psnet_type < PSNET_NUM_TYPES));
448 if((psnet_type < 0) || (psnet_type >= PSNET_NUM_TYPES)){
451 l = &Psnet_top_buffers[psnet_type];
453 // do we have any buffers in here?
454 if((l->psnet_lowest_id == -1) || (l->psnet_lowest_id > l->psnet_highest_id)){
462 // wrappers around sendto to sorting through different packet types
463 int SENDTO(SOCKET s, char * buf, int len, int flags, sockaddr *to, int tolen, int psnet_type)
465 char outbuf[MAX_TOP_LAYER_PACKET_SIZE + 150];
468 outbuf[0] = (char)psnet_type;
469 memcpy(&outbuf[1], buf, len);
471 // is the socket writeable?
474 return sendto(s, outbuf, len + 1, flags, (SOCKADDR*)to, tolen);
477 // call this once per frame to read everything off of our socket
478 void PSNET_TOP_LAYER_PROCESS()
481 SOCKADDR_IN ip_addr; // UDP/TCP socket structure
483 SOCKADDR_IPX ipx_addr; // IPX socket structure
488 int read_len, from_len;
490 socklen_t read_len, from_len;
492 net_addr_t from_addr;
493 network_naked_packet packet_read;
495 // clear the addresses to remove compiler warnings
496 memset(&ip_addr, 0, sizeof(SOCKADDR_IN));
498 memset(&ipx_addr, 0, sizeof(SOCKADDR_IPX));
501 if ( Network_status != NETWORK_STATUS_RUNNING ) {
502 ml_printf("Network ==> socket not inited in PSNET_TOP_LAYER_PROCESS\n");
507 // check if there is any data on the socket to be read. The amount of data that can be
508 // atomically read is stored in len.
511 FD_SET( Unreliable_socket, &rfds );
515 if ( select( -1, &rfds, NULL, NULL, &timeout) == SOCKET_ERROR ) {
516 ml_printf("Error %d doing a socket select on read\n", WSAGetLastError());
520 // if the read file descriptor is not set, then bail!
521 if ( !FD_ISSET(Unreliable_socket, &rfds) ){
525 // get data off the socket and process
526 read_len = SOCKET_ERROR;
527 switch ( Socket_type ) {
530 from_len = sizeof(SOCKADDR_IPX);
531 read_len = recvfrom( Unreliable_socket, (char*)packet_read.data, MAX_TOP_LAYER_PACKET_SIZE, 0, (SOCKADDR*)&ipx_addr, &from_len);
536 from_len = sizeof(SOCKADDR_IN);
537 read_len = recvfrom( Unreliable_socket, (char*)packet_read.data, MAX_TOP_LAYER_PACKET_SIZE, 0, (SOCKADDR*)&ip_addr, &from_len);
545 // set the from_addr for storage into the packet buffer structure
546 from_addr.type = Socket_type;
548 switch ( Socket_type ) {
551 from_addr.port = ntohs( ipx_addr.sa_socket );
552 memcpy(from_addr.addr, ipx_addr.sa_nodenum, 6 );
553 memcpy(from_addr.net_id, ipx_addr.sa_netnum, 4 );
558 from_addr.port = ntohs( ip_addr.sin_port );
559 memset(from_addr.addr, 0x00, 6);
561 memcpy(from_addr.addr, &ip_addr.sin_addr.S_un.S_addr, 4);
564 //memcpy(from_addr.addr, &ip_addr.sin_addr.S_un.S_addr, 4);
574 if ( read_len == SOCKET_ERROR ) {
575 // int x = WSAGetLastError();
576 ml_printf("Socket error on socket_get_data()");
580 // determine the packet type
581 int packet_type = packet_read.data[0];
582 // mprintf(("TOP LAYER PACKET %d!\n", packet_type));
583 if((packet_type < 0) || (packet_type >= PSNET_NUM_TYPES)){
587 psnet_buffer_packet(&Psnet_top_buffers[packet_type], packet_read.data + 1, read_len - 1, &from_addr);
593 // -------------------------------------------------------------------------------------------------------
597 // initialize psnet to use the specified port
598 void psnet_init( int protocol, int port_num )
600 char *internet_connection;
608 #if defined(DEMO) || defined(OEM_BUILD) // not for FS2_DEMO
612 // GAME PORT INITIALIZATION STUFF
613 if ( Network_status == NETWORK_STATUS_RUNNING ){
614 ml_string("Skipping psnet_init() because network already running");
618 internet_connection = os_config_read_string(NULL, "NetworkConnection", "none");
619 if ( !stricmp(internet_connection, NOX("dialup")) ) {
620 ml_string("psnet_init() detected dialup connection");
622 Psnet_connection = NETWORK_CONNECTION_DIALUP;
623 } else if ( !stricmp(internet_connection, NOX("lan")) ) {
624 ml_string("psnet_init() detected lan connection");
626 Psnet_connection = NETWORK_CONNECTION_LAN;
628 ml_string("psnet_init() detected no connection");
630 Psnet_connection = NETWORK_CONNECTION_NONE;
633 Network_status = NETWORK_STATUS_NO_WINSOCK;
635 if (WSAStartup(0x101, &wsa_data )){
640 // get the port for running this game on. Be careful that it cannot be out of bounds
641 Psnet_default_port = DEFAULT_GAME_PORT;
642 if ( (port_num > 1023) && (port_num < USHRT_MAX) ) {
643 Psnet_default_port = (ushort)port_num;
646 // initialize TCP now
648 if(!psnet_init_tcp()){
649 ml_printf("Error on TCP startup %d\n", Tcp_failure_code);
653 if(!psnet_init_rel_tcp(Psnet_default_port + 1, 0)){
654 ml_printf("Network", "Error on TCP startup %d\n", Tcp_failure_code);
660 // clear reliable sockets
661 reliable_socket *rsocket;
663 for(j=0; j<MAXRELIABLESOCKETS; j++){
664 rsocket=&Reliable_sockets[j];
665 memset(rsocket,0,sizeof(reliable_socket));
668 // initialize IPX not
671 if(!psnet_init_ipx()){
672 ml_printf("Network", "Error on IPX startup %d\n", Ipx_failure_code);
676 if(!psnet_init_rel_ipx(Psnet_default_port + 1, 0)){
677 ml_printf("Network", "Error on IPX startup %d\n", Ipx_failure_code);
686 // determine if we've successfully initialized the protocol we want
687 if(!Tcp_active && !Ipx_active){
688 Network_status = NETWORK_STATUS_NO_PROTOCOL;
690 ml_string("No protocol in psnet_init()!");
693 // specified network timeout
694 Nettimeout = NETTIMEOUT;
695 if(Cmdline_timeout > 0){
696 Nettimeout = Cmdline_timeout;
702 if(Network_status != NETWORK_STATUS_NO_PROTOCOL){
703 // set network to be running
704 Network_status = NETWORK_STATUS_RUNNING;
706 // determine if our socket can broadcast
707 Can_broadcast = Tcp_can_broadcast || Ipx_can_broadcast;
709 // initialize all packet type buffers
710 for(idx=0; idx<PSNET_NUM_TYPES; idx++){
711 psnet_buffer_init(&Psnet_top_buffers[idx]);
719 if ( Network_status != NETWORK_STATUS_RUNNING ){
724 WSACancelBlockingCall();
727 if ( TCP_socket != INVALID_SOCKET ) {
728 shutdown( TCP_socket, 1 );
729 closesocket( TCP_socket );
732 if ( IPX_socket != INVALID_SOCKET ) {
733 shutdown( IPX_socket, 1 );
734 closesocket( IPX_socket );
739 //Warning( LOCATION, "Error closing wsock!\n" );
743 // close down all reliable sockets - this forces them to
744 // send a disconnect to any remote machines
747 Network_status = NETWORK_STATUS_NOT_INITIALIZED;
750 // set the protocol to use
751 int psnet_use_protocol( int protocol )
755 SOCKADDR_IPX ipx_addr;
761 // zero out my address
762 Psnet_my_addr_valid = 0;
763 memset( &Psnet_my_addr, 0, sizeof(Psnet_my_addr) );
765 // wait until we choose a protocol to determine if we can broadcast
768 ml_string("In psnet_use_protocol()");
770 switch ( protocol ) {
773 ml_string("psnet_use_protocol() selecting IPX");
775 // assign the IPX_* sockets to the socket values used elsewhere
776 Unreliable_socket = IPX_socket;
778 Can_broadcast = Ipx_can_broadcast;
780 ml_printf("Psnet : IPX broadcast\n");
783 // get the socket name for the IPX_socket, and put it into My_addr
784 len = sizeof(SOCKADDR_IPX);
785 if ( getsockname(IPX_socket, (SOCKADDR *)&ipx_addr, &len) == SOCKET_ERROR ) {
786 ml_printf("Unable to get sock name for IPX unreliable socket (%d)\n", WSAGetLastError() );
790 memcpy(Psnet_my_addr.net_id, ipx_addr.sa_netnum, 4);
791 memcpy(Psnet_my_addr.addr, ipx_addr.sa_nodenum, 6);
792 Psnet_my_addr.port = Psnet_default_port;
794 ml_printf("Psnet using - NET_IPX\n");
799 if ( Network_status != NETWORK_STATUS_RUNNING ){
800 ml_string("Network_status != NETWORK_STATUS_RUNNING in NET_TCP in psnet_use_protocol()");
804 // assign the TCP_* sockets to the socket values used elsewhere
805 Unreliable_socket = TCP_socket;
807 Can_broadcast = Tcp_can_broadcast;
809 ml_printf("Psnet : TCP broadcast\n");
812 // get the socket name for the IPX_socket, and put it into My_addr
813 len = sizeof(SOCKADDR_IN);
814 if ( getsockname(TCP_socket, (SOCKADDR *)&ip_addr, &len) == SOCKET_ERROR ) {
815 ml_printf("Unable to get sock name for TCP unreliable socket (%d)\n", WSAGetLastError() );
820 memset(Psnet_my_addr.net_id, 0, 4);
821 memcpy(Psnet_my_addr.addr, &ip_addr.sin_addr, 6);
822 Psnet_my_addr.port = Psnet_default_port;
824 ml_printf("Psnet using - NET_TCP\n");
832 Psnet_my_addr.type = protocol;
833 Socket_type = protocol;
838 // get the status of the network
839 int psnet_get_network_status()
841 // first case is when "none" is selected
842 if ( Psnet_connection == NETWORK_CONNECTION_NONE ) {
843 return NETWORK_ERROR_NO_TYPE;
846 // first, check the connection status of the network
847 if ( Network_status == NETWORK_STATUS_NO_WINSOCK )
848 return NETWORK_ERROR_NO_WINSOCK;
850 if ( Network_status == NETWORK_STATUS_NO_PROTOCOL ){
851 return NETWORK_ERROR_NO_PROTOCOL;
854 // network is running -- be sure that the RAS people know to connect if they currently cannot.
856 if ( Psnet_connection == NETWORK_CONNECTION_DIALUP ) {
857 // if on a dialup connection, be sure that RAS is active.
858 if ( !Ras_connected ) {
859 return NETWORK_ERROR_CONNECT_TO_ISP;
861 } else if ( Psnet_connection == NETWORK_CONNECTION_LAN ) {
862 // if on a LAN, and they have a dialup connection active, return error to indicate that they need
863 // to pick the right connection type
864 if ( Ras_connected ) {
865 return NETWORK_ERROR_LAN_AND_RAS;
868 return NETWORK_ERROR_NONE;
871 // convert a net_addr to a string
872 char* psnet_addr_to_string( char * text, net_addr_t * address )
875 if ( Network_status != NETWORK_STATUS_RUNNING ) {
876 strcpy( text, XSTR("[no networking]",910) );
882 switch ( address->type ) {
884 sprintf(text, "%x %x %x %x: %x %x %x %x %x %x", address->net_id[0],
897 memcpy(&temp_addr.s_addr, address->addr, 4);
898 strcpy( text, inet_ntoa(temp_addr) );
910 // convert a string to a net addr
911 void psnet_string_to_addr( net_addr_t * address, char * text )
914 char str[255], *c, *port;
917 if ( Network_status != NETWORK_STATUS_RUNNING ) {
918 strcpy( text, XSTR("[no networking]",910) );
922 // copy the text string to local storage to look for ports
923 Assert( strlen(text) < 255 );
925 c = strrchr(str, ':');
932 switch ( address->type ) {
934 Int3(); // no support for this yet
938 addr.s_addr = inet_addr(str);
939 // if we get INADDR_NONE returns, then we need to try and resolve the host
941 if ( addr.s_addr == INADDR_NONE ) {
942 he = gethostbyname( str );
943 // returns a non-null pointer if successful, so get the address
945 addr.s_addr = ((in_addr *)(he->h_addr))->s_addr; // this is the address in network byte order
947 addr.s_addr = INADDR_NONE;
951 memset(address->addr, 0x00, 6);
952 memcpy(address->addr, &addr.s_addr, 4);
954 address->port = (ushort)(atoi(port));
965 // compare 2 addresses
966 int psnet_same( net_addr_t * a1, net_addr_t * a2 )
968 return !memcmp(a1->addr, a2->addr, 6);
971 // send data unreliably
972 int psnet_send( net_addr_t * who_to, void * data, int len, int np_index )
974 // send data unreliably
976 SOCKADDR_IN sockaddr; // UDP/TCP socket structure
978 SOCKADDR_IPX ipx_addr; // IPX socket structure
981 ubyte iaddr[6], *send_data;
984 struct timeval timeout;
986 // always use the reliable socket
987 send_sock = Unreliable_socket;
989 if ( Network_status != NETWORK_STATUS_RUNNING ) {
990 ml_printf("Network ==> Socket not inited in psnet_send\n");
994 if ( psnet_same( who_to, &Psnet_my_addr) ){
998 memset(iaddr, 0x00, 6);
999 memcpy(iaddr, who_to->addr, 6);
1001 if ( memcmp(iaddr, Null_address, 6) == 0) {
1002 ml_printf("Network ==> send to address is 0 in psnet_send\n");
1006 port = who_to->port;
1009 ml_printf("Network ==> destination port %d invalid in psnet_send\n", port);
1013 // stuff the data with the type
1014 send_data = (ubyte*)data;
1018 FD_SET( send_sock, &wfds );
1020 timeout.tv_usec = 0;
1022 if ( SELECT( -1, NULL, &wfds, NULL, &timeout, PSNET_TYPE_UNRELIABLE) == SOCKET_ERROR ) {
1023 ml_printf("Error on blocking select for write %d\n", WSAGetLastError() );
1027 // if the write file descriptor is not set, then bail!
1028 if ( !FD_ISSET(send_sock, &wfds ) ){
1033 switch ( who_to->type ) {
1036 ipx_addr.sa_socket = htons(port);
1037 ipx_addr.sa_family = AF_IPX;
1038 memcpy(ipx_addr.sa_nodenum, iaddr, 6);
1039 memcpy(ipx_addr.sa_netnum, who_to->net_id, 4);
1041 ret = SENDTO(send_sock, (char *)send_data, send_len, 0, (SOCKADDR*)&ipx_addr, sizeof(ipx_addr), PSNET_TYPE_UNRELIABLE);
1043 multi_rate_add(np_index, "ipx", send_len);
1044 if ( (ret != SOCKET_ERROR) && (ret != send_len) ){
1045 // ml_printf("requested to send %d bytes -- sent %d instead!!!\n", send_len, ret);
1051 sockaddr.sin_family = AF_INET;
1052 memcpy(&sockaddr.sin_addr.s_addr, iaddr, 4);
1053 sockaddr.sin_port = htons(port);
1055 multi_rate_add(np_index, "udp(h)", send_len + UDP_HEADER_SIZE);
1056 multi_rate_add(np_index, "udp", send_len);
1057 ret = SENDTO( send_sock, (char *)send_data, send_len, 0, (SOCKADDR*)&sockaddr, sizeof(sockaddr), PSNET_TYPE_UNRELIABLE );
1061 Assert(0); // unknown protocol
1066 if ( ret != SOCKET_ERROR ) {
1069 //Warning( LOCATION, "Couldn't send data (0x%x)!\n", WSAGetLastError() );
1073 // get data from the unreliable socket
1074 int psnet_get( void * data, net_addr_t * from_addr )
1078 // try and get a free buffer and return its size
1079 if(psnet_buffer_get_next(&Psnet_top_buffers[PSNET_TYPE_UNRELIABLE], (ubyte*)data, &buffer_size, from_addr)){
1087 // broadcast data on unreliable socket
1088 int psnet_broadcast( net_addr_t * who_to, void * data, int len )
1090 if ( Network_status != NETWORK_STATUS_RUNNING ) {
1091 ml_printf("Network ==> Socket not inited in psnet_broadcast\n");
1095 if ( !Can_broadcast ) {
1096 ml_printf("Cannot broadcast -- returning without doing anything\n");
1100 ubyte broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
1102 // broadcasting works on a local subnet which is all we really want to do for now anyway.
1103 // we might keep this in as an option for freespace later.
1104 switch ( who_to->type ) {
1107 memcpy(who_to->addr, broadcast, 6);
1108 psnet_send(who_to, data, len);
1116 // flush all sockets
1119 ubyte data[MAX_TOP_LAYER_PACKET_SIZE + 250];
1120 net_addr_t from_addr;
1122 while ( psnet_get( data, &from_addr ) > 0 ) ;
1125 // if the passed string is a valid IP string
1126 int psnet_is_valid_ip_string( char *ip_string, int allow_port )
1129 struct hostent *host_ent;
1132 // our addresses may have ports, so make local copy and remove port number
1133 Assert( strlen(ip_string) < 255 );
1134 strcpy(str, ip_string);
1135 c = strrchr(str, ':');
1140 addr.s_addr = inet_addr(ip_string);
1141 if ( addr.s_addr != INADDR_NONE ){
1142 // make sure the ip string is a valid format string
1143 if(psnet_is_valid_numeric_ip(ip_string)){
1148 // try name resolution
1149 host_ent = gethostbyname( ip_string );
1154 // valid host entry so return 1;
1159 // -------------------------------------------------------------------------------------------------------
1160 // PSNET 2 RELIABLE SOCKET FUNCTIONS
1164 int psnet_rel_ping_compare( const void *arg1, const void *arg2 )
1166 float *ping1 = (float *)arg1;
1167 float *ping2 = (float *)arg2;
1169 if(*ping1==*ping2) return 0;
1170 else if(*ping1>*ping2) return 1;
1171 else if(*ping1<*ping2) return -1;
1176 void psnet_rel_send_ack(SOCKADDR *raddr, unsigned int sig, ubyte link_type, float time_sent)
1179 reliable_header ack_header;
1180 ack_header.type = RNT_ACK;
1181 ack_header.data_len = sizeof(unsigned int);
1182 ack_header.send_time = time_sent;
1183 memcpy(&ack_header.data,&sig,sizeof(unsigned int));
1184 switch (link_type) {
1187 ml_string("No IPX in rel_send_ack()");
1190 ret = SENDTO(Unreliable_socket, (char *)&ack_header, RELIABLE_PACKET_HEADER_ONLY_SIZE+sizeof(unsigned int), 0, raddr, sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1194 ml_string("No TCP in rel_send_ack()");
1197 ret = SENDTO(Unreliable_socket, (char *)&ack_header, RELIABLE_PACKET_HEADER_ONLY_SIZE+sizeof(unsigned int), 0, raddr, sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1200 ml_string("Unknown protocol type in nw_SendReliable()");
1206 // function to shutdown and close the given socket. It takes a couple of things into consideration
1207 // when closing, such as possibly reiniting reliable sockets if they are closed here.
1208 void psnet_rel_close_socket( PSNET_SOCKET_RELIABLE *sockp )
1210 reliable_header diss_conn_header;
1212 // if the socket is out of range
1213 if(*sockp>=MAXRELIABLESOCKETS)
1215 ml_printf("Invalid socket id passed to nw_NewCloseSocket() -- %d\n",*sockp);
1218 ml_printf("Closing socket %d\n",*sockp);
1220 // go through every buffer and "free it up(tm)"
1222 for(i=0;i<MAXNETBUFFERS;i++){
1223 if(Reliable_sockets[*sockp].rbuffers[i]){
1224 if(Reliable_sockets[*sockp].rbuffers[i] != NULL){
1225 free(Reliable_sockets[*sockp].rbuffers[i]);
1227 Reliable_sockets[*sockp].rbuffers[i] = NULL;
1228 Reliable_sockets[*sockp].rsequence[i] = 0;
1230 if(Reliable_sockets[*sockp].sbuffers[i]){
1231 if(Reliable_sockets[*sockp].sbuffers[i] != NULL){
1232 free(Reliable_sockets[*sockp].sbuffers[i]);
1234 Reliable_sockets[*sockp].sbuffers[i] = NULL;
1235 Reliable_sockets[*sockp].rsequence[i] = 0;
1239 // send a disconnect packet to the socket on the other end
1240 diss_conn_header.type = RNT_DISCONNECT;
1241 diss_conn_header.seq = CONNECTSEQ;
1242 diss_conn_header.data_len = 0;
1243 if(*sockp==Serverconn){
1244 Serverconn = 0xffffffff;
1246 switch ( Reliable_sockets[*sockp].connection_type ) {
1251 SENDTO(Unreliable_socket, (char *)&diss_conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[*sockp].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1257 SENDTO(Unreliable_socket, (char *)&diss_conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[*sockp].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1260 ml_printf("Unknown protocol type in nw_CloseSocket()!\n");
1264 memset(&Reliable_sockets[*sockp],0,sizeof(reliable_socket));
1265 Reliable_sockets[*sockp].status = RNF_UNUSED;
1268 // function to check the status of the reliable socket and try to re-initialize it if necessary.
1269 // win95 seems to have trouble doing a reinit of the socket immediately after close, so this
1270 // function exists to check the status, and reinitialize if we need to
1271 int psnet_rel_check()
1276 // send data reliably
1277 int psnet_rel_send(PSNET_SOCKET_RELIABLE socketid, ubyte *data, int length, int np_index)
1281 reliable_socket *rsocket;
1283 if(socketid >= MAXRELIABLESOCKETS){
1284 ml_printf("Invalid socket id passed to psnet_rel_send() -- %d\n",socketid);
1288 Assert(length<sizeof(reliable_header));
1291 rsocket=&Reliable_sockets[socketid];
1292 if(rsocket->status!=RNF_CONNECTED) {
1293 //We can't send because this isn't a connected reliable socket.
1294 ml_printf("Can't send packet because of status %d in nw_SendReliable(). socket = %d\n",rsocket->status,socketid);
1298 // Add the new packet to the sending list and send it.
1299 for(i=0;i<MAXNETBUFFERS;i++){
1300 if(NULL==rsocket->sbuffers[i]){
1301 reliable_header send_header;
1302 int send_this_packet=1;
1304 rsocket->send_len[i] = length;
1305 rsocket->sbuffers[i] = (reliable_net_sendbuffer *)malloc(sizeof(reliable_net_sendbuffer));
1307 memcpy(rsocket->sbuffers[i]->buffer,data,length);
1309 send_header.seq = rsocket->theirsequence;
1310 rsocket->ssequence[i] = rsocket->theirsequence;
1312 memcpy(send_header.data,data,length);
1313 send_header.data_len = (ushort)length;
1314 send_header.type = RNT_DATA;
1315 send_header.send_time = psnet_get_time();
1316 // SOCKADDR_IN * rsockaddr = (SOCKADDR_IN *)&rsocket->addr;
1318 if (send_this_packet){
1319 switch ( rsocket->connection_type ){
1324 bytesout = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1330 multi_rate_add(np_index, "tcp(h)", RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i]);
1331 bytesout = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1334 ml_printf("Unknown protocol type in nw_SendReliable()!\n");
1339 if((bytesout==SOCKET_ERROR)&&(WSAEWOULDBLOCK==WSAGetLastError())){
1340 //This will cause it to try to send again next frame. (or sooner)
1341 rsocket->timesent[i] = psnet_get_time()-(NETRETRYTIME*4);
1343 rsocket->timesent[i] = psnet_get_time();
1347 rsocket->theirsequence++;
1351 ml_printf("PSNET RELIABLE SEND BUFFER OVERRUN. socket = %d\n",socketid);
1357 // -1 socket not connected
1358 // 0 No packet ready to receive
1359 // >0 Buffer filled with the number of bytes recieved
1360 int psnet_rel_get(PSNET_SOCKET socketid, ubyte *buffer, int max_len)
1364 reliable_socket *rsocket = NULL;
1366 if(socketid >= MAXRELIABLESOCKETS){
1367 ml_printf("Invalid socket id passed to nw_NewReceiveReliable() -- %d\n",socketid);
1370 rsocket = &Reliable_sockets[socketid];
1371 if( (RNF_CONNECTED!=rsocket->status) && (RNF_LIMBO!=rsocket->status) ){
1372 ml_printf("Can't receive packet because it isn't connected in nw_ReceiveReliable(). socket = %d\n",socketid);
1375 //If the buffer position is the position we are waiting for, fill in
1376 //the buffer we received in the call to this function and return true
1378 for(i=0; i<MAXNETBUFFERS; i++){
1379 if((rsocket->rsequence[i] == rsocket->oursequence) && rsocket->rbuffers[i]){
1380 memcpy(buffer,rsocket->rbuffers[i]->buffer, rsocket->recv_len[i]);
1381 free(rsocket->rbuffers[i]);
1382 rsocket->rbuffers[i] = NULL;
1383 rsocket->rsequence[i] = 0;
1384 rsocket->oursequence++;
1385 return rsocket->recv_len[i];
1392 // process all active reliable sockets
1393 void psnet_rel_work()
1397 int max_len = NETBUFFERSIZE;
1400 static reliable_header rcv_buff;
1401 static SOCKADDR rcv_addr;
1403 int addrlen = sizeof(SOCKADDR);
1404 unsigned int rcvid;//The id of who we actually received a packet from, as opposed to socketid parm
1408 PSNET_TOP_LAYER_PROCESS();
1410 // negotitate initial connection with the server
1411 reliable_socket *rsocket = NULL;
1412 if(Serverconn != 0xffffffff){
1413 //Check to see if we need to send a packet out.
1414 if((Reliable_sockets[Serverconn].status==RNF_LIMBO) && ((Serverconn != 0xffffffff) && fl_abs((psnet_get_time() - Last_sent_iamhere))>NETRETRYTIME) ){
1415 reliable_header conn_header;
1416 //Now send I_AM_HERE packet
1417 conn_header.type = RNT_I_AM_HERE;
1418 conn_header.seq = (ushort)(~CONNECTSEQ);
1419 conn_header.data_len = 0;
1420 Last_sent_iamhere = psnet_get_time();
1421 int ret = SOCKET_ERROR;
1422 switch ( Reliable_sockets[Serverconn].connection_type ) {
1425 ml_printf("Unable to use this network connection type in nw_WorkReliable()\n");
1429 ret = SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[Serverconn].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1433 ml_printf("Unable to use this network connection type in nw_WorkReliable()\n");
1437 ret = SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[Serverconn].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1440 ml_printf("Unknown protocol type in nw_WorkReliable()!\n");
1445 if((ret == SOCKET_ERROR) && (WSAEWOULDBLOCK == WSAGetLastError())){
1446 Reliable_sockets[Serverconn].last_packet_sent = psnet_get_time()-NETRETRYTIME;
1448 Reliable_sockets[Serverconn].last_packet_sent = psnet_get_time();
1454 net_addr_t d3_rcv_addr;
1455 SOCKADDR_IN *rcvaddr,*rsockaddr;
1456 int ipx_has_data = 0;
1457 int udp_has_data = 0;
1461 if(Ipx_active && (Socket_type == NET_IPX)){
1463 FD_SET(Unreliable_socket, &read_fds);
1464 ipx_has_data = SELECT(0,&read_fds,NULL,NULL,&timeout, PSNET_TYPE_RELIABLE);
1466 if(Tcp_active && (Socket_type == NET_TCP)){
1468 FD_SET(Unreliable_socket, &read_fds);
1469 udp_has_data = SELECT(0,&read_fds,NULL,NULL,&timeout, PSNET_TYPE_RELIABLE);
1472 addrlen = sizeof(SOCKADDR);
1475 SOCKADDR_IPX *ipx_addr = (SOCKADDR_IPX *)&rcv_addr;
1476 memset(&d3_rcv_addr,0,sizeof(net_addr_t));
1477 memset(&rcv_addr,0,sizeof(SOCKADDR));
1478 bytesin = RECVFROM(Unreliable_socket, (char *)&rcv_buff,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1479 memcpy(d3_rcv_addr.addr, ipx_addr->sa_nodenum, 6);
1480 memcpy(d3_rcv_addr.net_id, ipx_addr->sa_netnum, 4);
1481 d3_rcv_addr.type = NET_IPX;
1482 link_type = NET_IPX;
1484 } else if(udp_has_data){
1485 SOCKADDR_IN *tcp_addr = (SOCKADDR_IN *)&rcv_addr;
1486 memset(&d3_rcv_addr,0,sizeof(net_addr_t));
1487 memset(&rcv_addr,0,sizeof(SOCKADDR));
1488 bytesin = RECVFROM(Unreliable_socket, (char *)&rcv_buff,sizeof(reliable_header), 0, (SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1489 memcpy(d3_rcv_addr.addr, &tcp_addr->sin_addr.s_addr, 4);
1490 d3_rcv_addr.port = tcp_addr->sin_port;
1491 d3_rcv_addr.type = NET_TCP;
1492 link_type = NET_TCP;
1494 //Neither socket had data waiting
1499 ml_printf("recvfrom returned an error! -- %d\n",WSAGetLastError());
1500 //Int3();//See Kevin
1504 //Someone wants to connect, so find a slot
1505 if(rcv_buff.type == RNT_REQ_CONN){
1506 for(i=1; i<MAXRELIABLESOCKETS; i++){
1507 if( (Reliable_sockets[i].status == RNF_CONNECTED) || (Reliable_sockets[i].status == RNF_LIMBO) ){
1508 //if(memcmp(&rcv_addr,&reliable_sockets[i].addr,sizeof(SOCKADDR))==0)
1509 if(memcmp(&d3_rcv_addr, &Reliable_sockets[i].net_addr, sizeof(net_addr_t)) == 0){
1510 //We already have a reliable link to this user, so we will ignore it...
1511 ml_printf("Received duplicate connection request. %d\n",i);
1512 //reliable_sockets[i].last_packet_received = timer_GetTime();
1513 psnet_rel_send_ack(&Reliable_sockets[i].addr, rcv_buff.seq, link_type, rcv_buff.send_time);
1514 //We will change this as a hack to prevent later code from hooking us up
1515 rcv_buff.type = 0xff;
1520 for(i=1; i<MAXRELIABLESOCKETS; i++){
1521 if(Reliable_sockets[i].status == RNF_UNUSED){
1522 //Add the new connection here.
1523 Reliable_sockets[i].connection_type=link_type;
1524 memcpy(&Reliable_sockets[i].net_addr, &d3_rcv_addr, sizeof(net_addr_t));
1525 memcpy(&Reliable_sockets[i].addr ,&rcv_addr, sizeof(SOCKADDR));
1526 Reliable_sockets[i].ping_pos = 0;
1527 Reliable_sockets[i].num_ping_samples = 0;
1528 Reliable_sockets[i].status = RNF_LIMBO;
1529 Reliable_sockets[i].last_packet_received = psnet_get_time();
1530 rsocket = &Reliable_sockets[i];
1531 rcvaddr = (SOCKADDR_IN *)&rcv_addr;
1532 ml_printf("Connect from %s:%d\n", inet_ntoa(rcvaddr->sin_addr), htons(rcvaddr->sin_port));
1536 if(i==MAXRELIABLESOCKETS){
1537 //No more connections!
1538 ml_printf("Out of incoming reliable connection sockets\n");
1539 //Int3();//See Kevin
1542 psnet_rel_send_ack(&rsocket->addr,rcv_buff.seq,link_type,rcv_buff.send_time);
1545 //Find out if this is a packet from someone we were expecting a packet.
1546 rcvaddr = (SOCKADDR_IN *)&rcv_addr;
1547 for(i=1; i<MAXRELIABLESOCKETS; i++){
1548 rsockaddr = (SOCKADDR_IN *)&Reliable_sockets[i].addr;
1549 if(memcmp(&d3_rcv_addr,&Reliable_sockets[i].net_addr,sizeof(net_addr_t)) == 0){
1550 rsocket=&Reliable_sockets[i];
1555 if(NULL == rsocket){
1556 ml_printf("Received reliable data from unconnected client.\n");
1557 ml_printf("Received from %s:%d\n",inet_ntoa(rcvaddr->sin_addr),rcvaddr->sin_port);
1560 rsocket->last_packet_received = psnet_get_time();
1562 if(rsocket->status != RNF_CONNECTED){
1564 if(rsocket->status == RNF_LIMBO){
1565 //this is our connection to the server
1566 if(Serverconn != 0xffffffff){
1567 if(rcv_buff.type == RNT_ACK){
1568 int *acknum = (int *)&rcv_buff.data;
1569 if(*acknum == (~CONNECTSEQ & 0xffff)){
1570 rsocket->status = RNF_CONNECTED;
1571 ml_printf("Got ACK for IAMHERE!\n");
1575 } else if(rcv_buff.type == RNT_I_AM_HERE){
1576 rsocket->status = RNF_CONNECTING;
1577 psnet_rel_send_ack(&rsocket->addr,rcv_buff.seq,link_type,rcv_buff.send_time);
1578 ml_printf("Got IAMHERE!\n");
1582 if((rcv_buff.type == RNT_DATA) && (Serverconn != 0xffffffff)){
1583 rsocket->status = RNF_CONNECTED;
1585 rsocket->last_packet_received = psnet_get_time();
1589 //Update the last recv variable so we don't need a heartbeat
1590 rsocket->last_packet_received = psnet_get_time();
1592 if(rcv_buff.type == RNT_HEARTBEAT){
1595 if(rcv_buff.type == RNT_ACK){
1597 rsocket->num_ping_samples++;
1599 rsocket->pings[rsocket->ping_pos] = rsocket->last_packet_received - rcv_buff.send_time;
1600 if(rsocket->num_ping_samples >= MAX_PING_HISTORY){
1601 float sort_ping[MAX_PING_HISTORY];
1602 for(int a=0;a<MAX_PING_HISTORY;a++){
1603 sort_ping[a] = rsocket->pings[a];
1606 qsort(sort_ping ,MAX_PING_HISTORY, sizeof(float), psnet_rel_ping_compare);
1607 rsocket->mean_ping = ((sort_ping[MAX_PING_HISTORY/2]+sort_ping[(MAX_PING_HISTORY/2)+1]))/2;
1609 rsocket->ping_pos++;
1610 if(rsocket->ping_pos >= MAX_PING_HISTORY){
1611 rsocket->ping_pos=0;
1614 // if this is an ack for a send buffer on the socket, kill the send buffer. its done
1615 for(i=0; i<MAXNETBUFFERS; i++){
1616 unsigned int *acksig = (unsigned int *)&rcv_buff.data;
1618 if(rsocket->sbuffers[i]){
1619 if(rsocket->ssequence[i] == *acksig){
1620 Assert(rsocket->sbuffers[i] != NULL);
1621 free(rsocket->sbuffers[i]);
1622 rsocket->sbuffers[i] = NULL;
1623 rsocket->ssequence[i] = 0;
1628 //remove that packet from the send buffer
1629 rsocket->last_packet_received = psnet_get_time();
1633 if(rcv_buff.type == RNT_DATA_COMP){
1635 //Decompress it. Put it back in the buffer. Process it as RNT_DATA
1636 rcv_buff.type = RNT_DATA;
1638 if(rcv_buff.type == RNT_DATA){
1639 //If the data is out of order by >= MAXNETBUFFERS-1 ignore that packet for now
1641 seqdelta = rcv_buff.seq - rsocket->oursequence;
1642 if(seqdelta<0) seqdelta = seqdelta*-1;
1643 if(seqdelta>=MAXNETBUFFERS - 1){
1644 ml_printf("Received reliable packet out of order!\n");
1645 //It's out of order, so we won't ack it, which will mean we will get it again soon.
1648 //else move data into the proper buffer position
1651 if(rsocket->oursequence < (0xffff - (MAXNETBUFFERS-1))){
1652 if (rsocket->oursequence > rcv_buff.seq){
1656 //Sequence is high, so prepare for wrap around
1657 if( ((unsigned short)(rcv_buff.seq + rsocket->oursequence)) > (MAXNETBUFFERS-1)){
1662 for(i=0; i<MAXNETBUFFERS; i++){
1663 if( (NULL != rsocket->rbuffers[i]) && (rsocket->rsequence[i] == rcv_buff.seq)){
1664 //Received duplicate packet!
1669 for(i=0; i<MAXNETBUFFERS; i++){
1670 if(NULL == rsocket->rbuffers[i]){
1671 if(rcv_buff.data_len>max_len){
1672 rsocket->recv_len[i] = rcv_buff.data_len;
1674 rsocket->recv_len[i] = rcv_buff.data_len;
1676 rsocket->rbuffers[i] = (reliable_net_rcvbuffer *)malloc(sizeof(reliable_net_rcvbuffer));
1677 memcpy(rsocket->rbuffers[i]->buffer,rcv_buff.data,rsocket->recv_len[i]);
1678 rsocket->rsequence[i] = rcv_buff.seq;
1683 psnet_rel_send_ack(&rsocket->addr,rcv_buff.seq,link_type,rcv_buff.send_time);
1687 } while((ipx_has_data>0) || (udp_has_data>0));
1689 // Go through each reliable socket that is connected and do any needed work.
1690 for(j=0; j<MAXRELIABLESOCKETS; j++){
1691 rsocket=&Reliable_sockets[j];
1693 if(Serverconn == 0xffffffff){
1694 if(rsocket->status==RNF_LIMBO){
1695 if(fl_abs((psnet_get_time() - rsocket->last_packet_received))>Nettimeout){
1696 ml_printf("Reliable (but in limbo) socket (%d) timed out in nw_WorkReliable().\n",j);
1697 memset(rsocket,0,sizeof(reliable_socket));
1698 rsocket->status = RNF_UNUSED;//Won't work if this is an outgoing connection.
1702 if((rsocket->status == RNF_LIMBO) && (fl_abs((psnet_get_time() - First_sent_iamhere)) > Nettimeout)){
1703 rsocket->status = RNF_BROKEN;
1704 ml_printf("Reliable socket (%d) timed out in nw_WorkReliable().\n",j);
1708 if(rsocket->status == RNF_CONNECTED){
1709 float retry_packet_time;
1710 if((rsocket->mean_ping==0) || (rsocket->mean_ping > (NETRETRYTIME*4))){
1711 retry_packet_time = NETRETRYTIME;
1713 if(rsocket->mean_ping<MIN_NET_RETRYTIME) {
1714 retry_packet_time = (float)MIN_NET_RETRYTIME;
1716 retry_packet_time = ((float)(float)rsocket->mean_ping * (float)1.25);
1719 //Iterate through send buffers.
1720 for(i=0;i<MAXNETBUFFERS;i++){
1722 if((rsocket->sbuffers[i]) && (fl_abs((psnet_get_time() - rsocket->timesent[i])) >= retry_packet_time)) {
1723 reliable_header send_header;
1724 send_header.send_time = psnet_get_time();
1725 send_header.seq = rsocket->ssequence[i];
1726 memcpy(send_header.data,rsocket->sbuffers[i]->buffer,rsocket->send_len[i]);
1727 send_header.data_len = (ushort)rsocket->send_len[i];
1728 send_header.type = RNT_DATA;
1729 if(rsocket->connection_type == NET_TCP){
1730 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1731 } else if(rsocket->connection_type == NET_IPX){
1732 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1734 if((rcode == SOCKET_ERROR) && (WSAEWOULDBLOCK == WSAGetLastError())){
1735 //The packet didn't get sent, flag it to try again next frame
1736 rsocket->timesent[i] = psnet_get_time()-(NETRETRYTIME*4);
1738 rsocket->last_packet_sent = psnet_get_time();
1739 rsocket->timesent[i] = psnet_get_time();
1745 if((rsocket->status == RNF_CONNECTED) && (fl_abs((psnet_get_time() - rsocket->last_packet_sent)) > NETHEARTBEATTIME)) {
1746 reliable_header send_header;
1747 send_header.send_time = psnet_get_time();
1748 send_header.seq = 0;
1749 send_header.data_len = 0;
1750 send_header.type = RNT_HEARTBEAT;
1753 if(rsocket->connection_type == NET_TCP){
1754 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1755 } else if(rsocket->connection_type == NET_IPX){
1756 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1758 if((rcode != SOCKET_ERROR) && (WSAEWOULDBLOCK != WSAGetLastError())){
1759 //It must have been sent
1760 rsocket->last_packet_sent = psnet_get_time();
1764 if((rsocket->status == RNF_CONNECTED) && (fl_abs((psnet_get_time() - rsocket->last_packet_received))>Nettimeout)){
1765 //This socket is hosed.....inform someone?
1766 ml_printf("Reliable Socket (%d) timed out in nw_WorkReliable().\n",j);
1767 rsocket->status = RNF_BROKEN;
1773 // get the status of a reliable socket, see RNF_* defines above
1774 int psnet_rel_get_status(PSNET_SOCKET_RELIABLE socketid)
1776 if(socketid >= MAXRELIABLESOCKETS){
1780 return Reliable_sockets[socketid].status;
1783 // function which checks the Listen_socket for possibly incoming requests to be connected.
1784 // returns 0 on error or nothing waiting. 1 if we should try to accept
1785 int psnet_rel_check_for_listen(net_addr_t *from_addr)
1787 SOCKADDR_IN *ip_addr; // UDP/TCP socket structure
1789 SOCKADDR_IPX *ipx_addr; // IPX socket structure
1794 for(i=1; i<MAXRELIABLESOCKETS; i++){
1795 if(Reliable_sockets[i].status == RNF_CONNECTING){
1796 Reliable_sockets[i].status = RNF_CONNECTED;
1797 //memcpy(from_addr,&reliable_sockets[i].addr,sizeof(SOCKADDR));
1798 ml_printf("New reliable connection in nw_CheckListenSocket().\n");
1800 switch ( Reliable_sockets[i].connection_type ){
1803 ipx_addr = (SOCKADDR_IPX *)&Reliable_sockets[i].addr;
1804 memset(from_addr, 0x00, sizeof(net_addr_t));
1805 from_addr->port = ntohs( ipx_addr->sa_socket );
1806 from_addr->type = NET_IPX;
1807 memcpy(from_addr->addr, ipx_addr->sa_nodenum, 6 );
1808 memcpy(from_addr->net_id, ipx_addr->sa_netnum, 4 );
1813 ip_addr = (SOCKADDR_IN *)&Reliable_sockets[i].addr;
1814 memset(from_addr, 0x00, sizeof(net_addr_t));
1815 from_addr->port = ntohs( ip_addr->sin_port );
1816 from_addr->type = NET_TCP;
1818 memcpy(from_addr->addr, &ip_addr->sin_addr.S_un.S_addr, 4);
1821 //memcpy(from_addr->addr, &ip_addr->sin_addr.S_un.S_addr, 4);
1830 char dbg_output[50];
1831 nw_GetNumbersFromHostAddress(from_addr,dbg_output);
1832 mprintf((0,"Got address from: %s\n",dbg_output));
1837 return INVALID_SOCKET;
1840 // attacmpt to connect() to the server's tcp socket. socket parameter is simply assigned to the
1841 // Reliable_socket socket created in psnet_init
1842 void psnet_rel_connect_to_server(PSNET_SOCKET *socket, net_addr_t *server_addr)
1844 //Send out a RNT_REQ_CONN packet, and wait for it to be acked.
1845 SOCKADDR_IN sockaddr; // UDP/TCP socket structure
1847 SOCKADDR_IPX ipx_addr; // IPX socket structure
1849 SOCKADDR *addr; // pointer to SOCKADDR to make coding easier
1855 float time_sent_req = 0;
1856 float first_sent_req = 0;
1857 static reliable_header conn_header;
1858 static reliable_header ack_header;
1860 struct timeval timeout;
1863 *socket = INVALID_SOCKET;
1865 memset(iaddr, 0x00, 6);
1866 memcpy(iaddr, &server_addr->addr, 6);
1867 port = (ushort)(server_addr->port); // Talk to the server listen port
1869 conn_header.type = RNT_REQ_CONN;
1870 conn_header.seq = CONNECTSEQ;
1871 conn_header.data_len = 0;
1876 if((server_addr->type == NET_IPX) && (!Ipx_active)){
1879 if((server_addr->type == NET_TCP) && (!Tcp_active)){
1882 //Flush out any left overs
1883 if(Tcp_active && (Socket_type == NET_TCP)){
1885 FD_SET(Unreliable_socket, &read_fds);
1886 while(SELECT(0, &read_fds, NULL, NULL, &timeout, PSNET_TYPE_RELIABLE)){
1887 addrlen = sizeof(SOCKADDR);
1888 bytesin = RECVFROM(Unreliable_socket, (char *)&ack_header,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1890 //Int3();//See Kevin
1891 ml_printf("UDP recvfrom returned an error! -- %d\n",WSAGetLastError());
1896 FD_SET(Unreliable_socket, &read_fds);
1899 if(Ipx_active && (Socket_type == NET_IPX)){
1901 FD_SET(Unreliable_socket, &read_fds);
1902 while(SELECT(0, &read_fds, NULL, NULL, &timeout, PSNET_TYPE_RELIABLE))
1904 addrlen = sizeof(SOCKADDR);
1905 bytesin = RECVFROM(Unreliable_socket, (char *)&ack_header,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1908 //Int3();//See Kevin
1909 ml_printf("IPX recvfrom returned an error! -- %d\n",WSAGetLastError());
1913 FD_SET(Unreliable_socket, &read_fds);
1916 memset(&ack_header,0,sizeof(reliable_header));
1918 SOCKET typeless_sock;
1919 net_addr_t d3_rcv_addr;
1920 memset(&d3_rcv_addr,0,sizeof(net_addr_t));
1922 switch ( server_addr->type ){
1925 ipx_addr.sa_family = AF_IPX;
1926 memcpy(ipx_addr.sa_nodenum, iaddr, 6);
1927 memcpy(ipx_addr.sa_netnum, server_addr->net_id, 4);
1928 ipx_addr.sa_socket = htons(port);
1929 addr = (SOCKADDR *)&ipx_addr;
1930 name_length = sizeof(ipx_addr);
1931 if( SOCKET_ERROR == SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE) ){
1932 ml_printf("Unable to send IPX packet in nw_ConnectToServer()! -- %d\n",WSAGetLastError());
1935 typeless_sock = Unreliable_socket;
1936 memcpy(d3_rcv_addr.addr,ipx_addr.sa_nodenum, 6);
1937 memcpy(d3_rcv_addr.net_id,ipx_addr.sa_netnum, 4);
1938 d3_rcv_addr.type = NET_IPX;
1942 sockaddr.sin_family = AF_INET;
1943 memcpy(&sockaddr.sin_addr.s_addr, iaddr, 4);
1944 sockaddr.sin_port = htons(port);
1945 addr = (SOCKADDR *)&sockaddr;
1946 name_length = sizeof(sockaddr);
1947 if( SOCKET_ERROR == SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE) ){
1948 ml_printf("Unable to send UDP packet in nw_ConnectToServer()! -- %d\n",WSAGetLastError());
1951 memcpy(d3_rcv_addr.addr, &sockaddr.sin_addr.s_addr, 4);
1952 d3_rcv_addr.port = sockaddr.sin_port;
1953 d3_rcv_addr.type = NET_TCP;
1954 typeless_sock = Unreliable_socket;
1958 ml_printf("Network","Unknown protocol type in nw_ConnectToServer()!\n");
1964 first_sent_req = psnet_get_time();
1965 time_sent_req = psnet_get_time();
1967 //Wait until we get a response from the server or we timeout
1970 PSNET_TOP_LAYER_PROCESS();
1973 FD_SET(typeless_sock, &read_fds);
1974 if(SELECT(0, &read_fds, NULL,NULL,&timeout, PSNET_TYPE_RELIABLE)){
1975 ml_string("selected() in psnet_rel_connect_to_server()");
1977 addrlen = sizeof(SOCKADDR);
1978 bytesin = RECVFROM(typeless_sock,(char *)&ack_header,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1980 ml_printf("recvfrom returned an error! -- %d\n",WSAGetLastError());
1985 ml_string("received data after select in psnet_rel_connect_to_server()");
1987 ml_string("about to check ack_header.type");
1988 if(ack_header.type == RNT_ACK){
1989 int *acknum = (int *)&ack_header.data;
1990 if(*acknum == CONNECTSEQ){
1991 for(i=1; i<MAXRELIABLESOCKETS; i++){
1992 if(Reliable_sockets[i].status==RNF_UNUSED){
1993 //Add the new connection here.
1994 memset(&Reliable_sockets[i],0,sizeof(reliable_socket));
1995 Reliable_sockets[i].connection_type = (ubyte)server_addr->type;
1996 memcpy(&Reliable_sockets[i].net_addr,&d3_rcv_addr,sizeof(net_addr_t));
1997 Reliable_sockets[i].last_packet_received = psnet_get_time();
1998 memcpy(&Reliable_sockets[i].addr,&rcv_addr,sizeof(SOCKADDR));
1999 Reliable_sockets[i].status = RNF_LIMBO;
2001 ml_printf("Succesfully connected to server in nw_ConnectToServer().\n");
2002 //Now send I_AM_HERE packet
2003 conn_header.type = RNT_I_AM_HERE;
2004 conn_header.seq = (ushort)(~CONNECTSEQ);
2005 conn_header.data_len = 0;
2007 First_sent_iamhere = psnet_get_time();
2008 Last_sent_iamhere = psnet_get_time();
2009 int rcode = SENDTO(typeless_sock,(char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
2010 if(rcode == SOCKET_ERROR){
2011 *socket = INVALID_SOCKET;
2012 Reliable_sockets[i].status = RNF_UNUSED;
2013 memset(&Reliable_sockets[i],0,sizeof(reliable_socket));
2014 ml_printf("Unable to send packet in nw_ConnectToServer()\n");
2017 Reliable_sockets[i].last_packet_sent = psnet_get_time();
2019 f = psnet_get_time();
2020 while((fl_abs((psnet_get_time() - f))<2) && (Reliable_sockets[i].status != RNF_CONNECTING)){
2027 ml_printf("Out of reliable socket space in nw_ConnectToServer().\n");
2029 } else ml_printf("Received out of sequence ACK in nw_ConnectToServer().\n");
2030 } else ml_printf("Received something that isn't an ACK in nw_ConnectToServer().\n");
2031 } else ml_printf("Received 0 bytes from recvfrom() in nw_ConnectToServer().\n");
2034 if((psnet_get_time()-time_sent_req)>2)
2036 ml_printf("Resending connect request.\n");
2037 int ret = SENDTO(typeless_sock,(char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
2038 if(ret != SOCKET_ERROR){
2039 time_sent_req = psnet_get_time();
2041 ml_printf("Error sending connection request! -- %d\n",WSAGetLastError() );
2046 } while(fl_abs((psnet_get_time() - first_sent_req)) < RELIABLE_CONNECT_TIME);
2049 // returns the ip address of this computer
2051 int psnet_rel_get_ip()
2055 SOCKADDR_IN local_address;
2058 // Get the local host name
2059 memset(&local_address, 0, sizeof(local_address));
2060 ret = gethostname(local, 255 );
2061 if (ret != SOCKET_ERROR ){
2062 // Resolve host name for local address
2063 hostent = gethostbyname((LPSTR)local);
2065 local_address.sin_addr.s_addr = *((u_long FAR *)(hostent->h_addr));
2068 ml_string("SOCKET_ERROR in psnet_rel_get_ip()!");
2070 ml_printf(%s:%d\n", inet_ntoa(rcvaddr->sin_addr), htons(rcvaddr->sin_port)
2071 return local_address.sin_addr.s_addr;
2075 // returns the ip address of this computer
2078 SOCKADDR_IN local_address;
2080 if(Psnet_connection == NETWORK_CONNECTION_DIALUP){
2081 local_address.sin_addr.s_addr = psnet_ras_status();
2082 if(local_address.sin_addr.s_addr == INADDR_NONE){
2083 local_address.sin_addr.s_addr = INADDR_ANY;
2086 // Init local address to zero
2087 local_address.sin_addr.s_addr = INADDR_ANY;
2090 ml_printf("psnet_get_ip() reports IP : %s\n", inet_ntoa(local_address.sin_addr));
2092 return local_address.sin_addr.s_addr;
2095 // initialize reliable sockets
2096 int psnet_init_rel_tcp(int port, int should_listen)
2099 SOCKADDR_IN sockaddr;
2101 sockaddr.sin_port = htons((ushort)port);
2102 sockaddr.sin_family = AF_INET;
2104 ml_printf("Setting up reliable sockets.\n");
2106 my_ip = psnet_get_ip();
2108 memcpy(&sockaddr.sin_addr.s_addr, &my_ip, sizeof(uint));
2110 Reliable_UDP_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP );
2111 if(INVALID_SOCKET == Reliable_UDP_socket){
2112 ml_printf("Unable to create reliable UDP socket -- %d\n", WSAGetLastError() );
2115 } else if(bind(Reliable_UDP_socket,(SOCKADDR *)&sockaddr,sizeof(SOCKADDR))!=0){
2116 ml_printf("Unable to bind reliable socket -- %d\n", WSAGetLastError() );
2121 // make any reliable sockets which we create that aren't listening non-blocking sockets
2126 error = ioctlsocket( Reliable_UDP_socket, FIONBIO, &arg );
2127 if ( error == SOCKET_ERROR ) {
2128 ml_printf("Unable to make reliable UDP socket non-blocking -- %d\n", WSAGetLastError() );
2138 // initialize reliable sockets
2139 int psnet_init_rel_ipx(int port, int should_listen)
2145 SOCKADDR_IPX ipx_addr;
2147 memset(&ipx_addr, 0, sizeof(SOCKADDR_IPX));
2148 ipx_addr.sa_family = AF_IPX;
2149 ipx_addr.sa_socket = htons((ushort)port);
2151 Reliable_IPX_socket = socket(AF_IPX, SOCK_DGRAM, NSPROTO_IPX);
2152 if(INVALID_SOCKET == Reliable_IPX_socket){
2153 ml_printf("Unable to create reliable IPX socket -- %d\n", WSAGetLastError() );
2156 } else if(bind(Reliable_IPX_socket,(SOCKADDR *)&ipx_addr,sizeof(SOCKADDR))!=0){
2157 ml_printf("Unable to bind reliable IPX socket -- %d\n", WSAGetLastError() );
2162 // make any reliable sockets which we create that aren't listening non-blocking sockets
2167 error = ioctlsocket( Reliable_IPX_socket, FIONBIO, &arg );
2168 if ( error == SOCKET_ERROR ) {
2169 ml_printf("Unable to make reliable IPX socket non-blocking -- %d\n", WSAGetLastError() );
2180 void psnet_rel_close()
2183 PSNET_SOCKET_RELIABLE sock;
2186 for(idx=0; idx<MAXRELIABLESOCKETS; idx++){
2187 if(Reliable_sockets[idx].status != RNF_UNUSED){
2189 psnet_rel_close_socket(&sock);
2194 // ------------------------------------------------------------------------------------------------------
2195 // PACKET BUFFERING FUNCTIONS
2198 // initialize the buffering system
2199 void psnet_buffer_init(network_packet_buffer_list *l)
2203 // blast the buffer clean
2204 memset(l->psnet_buffers, 0, sizeof(network_packet_buffer) * MAX_PACKET_BUFFERS);
2206 // set all buffer sequence #'s to -1
2207 for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
2208 l->psnet_buffers[idx].sequence_number = -1;
2211 // initialize the sequence #
2212 l->psnet_seq_number = 0;
2213 l->psnet_lowest_id = -1;
2214 l->psnet_highest_id = -1;
2217 // buffer a packet (maintain order!)
2218 void psnet_buffer_packet(network_packet_buffer_list *l, ubyte *data, int length, net_addr_t *from)
2223 // find the first empty packet
2224 for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
2225 if(l->psnet_buffers[idx].sequence_number == -1){
2231 // if we didn't find the buffer, report an overrun
2233 ml_printf("WARNING - Buffer overrun in psnet\n");
2236 memcpy(l->psnet_buffers[idx].data, data, length);
2237 l->psnet_buffers[idx].len = length;
2238 memcpy(&l->psnet_buffers[idx].from_addr, from, sizeof(net_addr_t));
2239 l->psnet_buffers[idx].sequence_number = l->psnet_seq_number;
2241 // keep track of the highest id#
2242 l->psnet_highest_id = l->psnet_seq_number++;
2244 // set the lowest id# for the first time
2245 if(l->psnet_lowest_id == -1){
2246 l->psnet_lowest_id = l->psnet_highest_id;
2251 // get the index of the next packet in order!
2252 int psnet_buffer_get_next(network_packet_buffer_list *l, ubyte *data, int *length, net_addr_t *from)
2257 // if there are no buffers, do nothing
2258 if((l->psnet_lowest_id == -1) || (l->psnet_lowest_id > l->psnet_highest_id)){
2262 // search until we find the lowest packet index id#
2263 for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
2264 // if we found the buffer
2265 if(l->psnet_buffers[idx].sequence_number == l->psnet_lowest_id){
2271 // at this point, we should _always_ have found the buffer
2274 // copy out the buffer data
2275 memcpy(data, l->psnet_buffers[idx].data, l->psnet_buffers[idx].len);
2276 *length = l->psnet_buffers[idx].len;
2277 memcpy(from, &l->psnet_buffers[idx].from_addr, sizeof(net_addr_t));
2279 // now we need to cleanup the packet list
2281 // mark the buffer as free
2282 l->psnet_buffers[idx].sequence_number = -1;
2283 l->psnet_lowest_id++;
2288 // -------------------------------------------------------------------------------------------------------
2289 // PSNET 2 FORWARD DEFINITIONS
2292 // if the string is a legally formatted ip string
2293 int psnet_is_valid_numeric_ip(char *ip)
2297 int val1,val2,val3,val4;
2299 // get the first ip value
2301 token = strtok(copy,".");
2305 // get the value of the token
2307 if((val1 < 0) || (val1 > 255)){
2313 token = strtok(NULL,".");
2317 // get the value of the token
2319 if((val2 < 0) || (val2 > 255)){
2325 token = strtok(NULL,".");
2329 // get the value of the token
2331 if((val3 < 0) || (val3 > 255)){
2337 token = strtok(NULL,"");
2341 // get the value of the token
2343 if((val4 < 0) || (val4 > 255)){
2348 // make sure he hasn't entered all 0's
2349 if((val1 == 0) && (val2 == 0) && (val3 == 0) && (val4 == 0)){
2357 // function called from high level FreeSpace code to determine the status of the networking
2358 // code returns one of a handful of macros
2360 DWORD (__stdcall *pRasEnumConnections)(LPRASCONN lprasconn, LPDWORD lpcb, LPDWORD lpcConnections) = NULL;
2361 DWORD (__stdcall *pRasGetConnectStatus)(HRASCONN hrasconn, LPRASCONNSTATUS lprasconnstatus ) = NULL;
2362 DWORD (__stdcall *pRasGetProjectionInfo)(HRASCONN hrasconn, RASPROJECTION rasprojection, LPVOID lpprojection, LPDWORD lpcb ) = NULL;
2364 // functions to get the status of a RAS connection
2365 unsigned int psnet_ras_status()
2368 unsigned long size, num_connections, i;
2369 RASCONN rasbuffer[25];
2370 HINSTANCE ras_handle;
2371 unsigned long rasip=0;
2372 RASPPPIP projection;
2373 // int Ras_connected;
2377 // first, call a LoadLibrary to load the RAS api
2378 ras_handle = LoadLibrary( "rasapi32.dll" );
2379 if ( ras_handle == NULL ) {
2383 pRasEnumConnections = (DWORD (__stdcall *)(LPRASCONN, LPDWORD, LPDWORD))GetProcAddress(ras_handle, "RasEnumConnectionsA");
2384 if (!pRasEnumConnections) {
2385 FreeLibrary( ras_handle );
2388 pRasGetConnectStatus = (DWORD (__stdcall *)(HRASCONN, LPRASCONNSTATUS))GetProcAddress(ras_handle, "RasGetConnectStatusA");
2389 if (!pRasGetConnectStatus) {
2390 FreeLibrary( ras_handle );
2393 pRasGetProjectionInfo = (DWORD (__stdcall *)(HRASCONN, RASPROJECTION, LPVOID, LPDWORD))GetProcAddress(ras_handle, "RasGetProjectionInfoA");
2394 if (!pRasGetProjectionInfo) {
2395 FreeLibrary( ras_handle );
2399 size = sizeof(rasbuffer);
2400 rasbuffer[0].dwSize = sizeof(RASCONN);
2402 rval = pRasEnumConnections( rasbuffer, &size, &num_connections );
2404 FreeLibrary( ras_handle );
2408 // JAS: My computer gets to this point, but I have no RAS connections,
2410 if ( num_connections < 1 ) {
2411 ml_string("Found no RAS connections");
2412 FreeLibrary( ras_handle );
2416 ml_printf("Found %d connections", num_connections);
2418 for (i = 0; i < num_connections; i++ ) {
2419 RASCONNSTATUS status;
2422 ml_printf("Connection %d:", i);
2423 ml_printf("Entry Name: %s", rasbuffer[i].szEntryName);
2424 ml_printf("Device Type: %s", rasbuffer[i].szDeviceType);
2425 ml_printf("Device Name: %s", rasbuffer[i].szDeviceName);
2427 // get the connection status
2428 status.dwSize = sizeof(RASCONNSTATUS);
2429 rval = pRasGetConnectStatus(rasbuffer[i].hrasconn, &status);
2431 FreeLibrary( ras_handle );
2435 // get the projection informatiom
2436 size = sizeof(projection);
2437 projection.dwSize = size;
2438 rval = pRasGetProjectionInfo(rasbuffer[i].hrasconn, RASP_PppIp, &projection, &size );
2440 FreeLibrary( ras_handle );
2444 ml_printf("IP Address: %s", projection.szIpAddress);
2449 FreeLibrary( ras_handle );
2450 rasip = inet_addr(projection.szIpAddress);
2451 if(rasip==INADDR_NONE){
2455 //The ip of the RAS connection
2460 // functions to get the status of a RAS connection
2462 void psnet_ras_status()
2465 unsigned long size, num_connections, i;
2466 RASCONN rasbuffer[25];
2467 HINSTANCE ras_handle;
2471 // first, call a LoadLibrary to load the RAS api
2472 ras_handle = LoadLibrary( NOX("rasapi32.dll") );
2473 if ( ras_handle == NULL ) {
2477 pRasEnumConnections = (DWORD (__stdcall *)(LPRASCONN, LPDWORD, LPDWORD))GetProcAddress(ras_handle, NOX("RasEnumConnectionsA"));
2478 if (!pRasEnumConnections) {
2479 FreeLibrary( ras_handle );
2482 pRasGetConnectStatus = (DWORD (__stdcall *)(HRASCONN, LPRASCONNSTATUS))GetProcAddress(ras_handle, NOX("RasGetConnectStatusA"));
2483 if (!pRasGetConnectStatus) {
2484 FreeLibrary( ras_handle );
2487 pRasGetProjectionInfo = (DWORD (__stdcall *)(HRASCONN, RASPROJECTION, LPVOID, LPDWORD))GetProcAddress(ras_handle, NOX("RasGetProjectionInfoA"));
2488 if (!pRasGetProjectionInfo) {
2489 FreeLibrary( ras_handle );
2493 size = sizeof(rasbuffer);
2494 rasbuffer[0].dwSize = sizeof(RASCONN);
2496 rval = pRasEnumConnections( rasbuffer, &size, &num_connections );
2498 FreeLibrary( ras_handle );
2502 // JAS: My computer gets to this point, but I have no RAS connections,
2504 if ( num_connections < 1 ) {
2505 ml_printf("Found no connections\n" );
2506 FreeLibrary( ras_handle );
2510 ml_printf("Found %d connections\n", num_connections);
2512 for (i = 0; i < num_connections; i++ ) {
2513 RASCONNSTATUS status;
2514 RASPPPIP projection;
2517 ml_printf("Connection %d:\n", i);
2518 ml_printf("Entry Name: %s\n", rasbuffer[i].szEntryName);
2519 ml_printf("Device Type: %s\n", rasbuffer[i].szDeviceType);
2520 ml_printf("Device Name: %s\n", rasbuffer[i].szDeviceName);
2522 // get the connection status
2523 status.dwSize = sizeof(RASCONNSTATUS);
2524 rval = pRasGetConnectStatus(rasbuffer[i].hrasconn, &status);
2526 FreeLibrary( ras_handle );
2530 ml_printf("\tStatus: %s\n", (status.rasconnstate==RASCS_Connected)?"Connected":"Not Connected");
2532 // get the projection informatiom
2533 size = sizeof(projection);
2534 projection.dwSize = size;
2535 rval = pRasGetProjectionInfo(rasbuffer[i].hrasconn, RASP_PppIp, &projection, &size );
2537 FreeLibrary( ras_handle );
2541 ml_printf("IP Address: %s", projection.szIpAddress));
2546 FreeLibrary( ras_handle );
2550 // set some options on a socket
2551 void psnet_socket_options( SOCKET sock )
2555 int cursize, cursizesize, bufsize;
2557 socklen_t cursize, cursizesize, bufsize;
2560 // Set the mode of the socket to allow broadcasting. We need to be able to broadcast
2561 // when a game is searched for in IPX mode.
2563 if(setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (LPSTR)&broadcast, sizeof(broadcast) )){
2570 // setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (LPSTR)&broadcast, sizeof(broadcast) );
2572 // try and increase the size of my receive buffer
2573 bufsize = MAX_RECEIVE_BUFSIZE;
2575 // set the current size of the receive buffer
2576 cursizesize = sizeof(int);
2577 getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (LPSTR)&cursize, &cursizesize);
2578 // for ( trysize = bufsize; trysize >= cursize; trysize >>= 1 ) {
2579 ret = setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (LPSTR)&bufsize, sizeof(bufsize));
2580 if ( ret == SOCKET_ERROR ) {
2583 wserr = WSAGetLastError();
2584 // if ( (wserr == WSAENOPROTOOPT) || (wserr == WSAEINVAL) )
2588 getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (LPSTR)&cursize, &cursizesize);
2589 ml_printf("Receive buffer set to %d\n", cursize);
2591 // set the current size of the send buffer
2592 cursizesize = sizeof(int);
2593 getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (LPSTR)&cursize, &cursizesize);
2594 // for ( trysize = bufsize; trysize >= cursize; trysize >>= 1 ) {
2595 ret = setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (LPSTR)&bufsize, sizeof(bufsize));
2596 if ( ret == SOCKET_ERROR ) {
2599 wserr = WSAGetLastError();
2600 // if ( (wserr == WSAENOPROTOOPT) || (wserr == WSAEINVAL) ){
2604 getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (LPSTR)&cursize, &cursizesize);
2605 ml_printf("Send buffer set to %d\n", cursize);
2608 // initialize ipx socket
2609 int psnet_init_ipx()
2614 SOCKADDR_IPX sockaddr;
2616 IPX_socket = INVALID_SOCKET;
2618 IPX_socket = socket( AF_IPX, SOCK_DGRAM, NSPROTO_IPX );
2619 if ( IPX_socket == INVALID_SOCKET ) {
2620 Ipx_failure_code = WSAGetLastError();
2621 ml_printf("Error on IPX startup %d\n", Ipx_failure_code);
2626 memset(&sockaddr,0,sizeof(SOCKADDR_IPX));
2627 sockaddr.sa_family = AF_IPX;
2628 sockaddr.sa_socket = htons( Psnet_default_port );
2629 if ( bind(IPX_socket, (SOCKADDR*)&sockaddr, sizeof (SOCKADDR_IPX)) == SOCKET_ERROR) {
2630 Ipx_failure_code = WSAGetLastError();
2631 ml_printf("Couldn't bind IPX socket (%d)! Invalidating IPX\n", Ipx_failure_code );
2635 // set socket options
2636 psnet_socket_options( IPX_socket );
2637 Ipx_can_broadcast = Can_broadcast;
2644 // initialize tcp socket
2645 int psnet_init_tcp()
2647 SOCKADDR_IN sockaddr;
2649 TCP_socket = INVALID_SOCKET;
2651 TCP_socket = socket( AF_INET, SOCK_DGRAM, 0 );
2652 if ( TCP_socket == INVALID_SOCKET ) {
2653 Tcp_failure_code = WSAGetLastError();
2654 ml_printf("Error on TCP startup %d\n", Tcp_failure_code);
2659 memset(&sockaddr,0,sizeof(SOCKADDR_IN));
2660 sockaddr.sin_family = AF_INET;
2661 sockaddr.sin_addr.s_addr = psnet_get_ip();
2662 sockaddr.sin_port = htons( Psnet_default_port );
2663 if ( bind(TCP_socket, (SOCKADDR*)&sockaddr, sizeof (sockaddr)) == SOCKET_ERROR) {
2664 Tcp_failure_code = WSAGetLastError();
2665 ml_printf("Couldn't bind TCP socket (%d)! Invalidating TCP\n", Tcp_failure_code );
2669 // set socket options
2670 psnet_socket_options( TCP_socket );
2671 Tcp_can_broadcast = Can_broadcast;
2677 // get time in seconds
2678 float psnet_get_time()
2680 return (float)timer_get_milliseconds() / 1000.0f;
2683 // mark a socket as having received data
2684 void psnet_mark_received(PSNET_SOCKET_RELIABLE socket)
2687 if((socket == 0xffffffff) || (socket >= MAXRELIABLESOCKETS)){
2692 Reliable_sockets[socket].last_packet_received = psnet_get_time();