2 * $Logfile: /Freespace2/code/Network/Psnet2.cpp $
7 * C file containing application level network-interface.
10 * Revision 1.2 2002/05/07 03:16:48 theoddone33
11 * The Great Newline Fix
13 * Revision 1.1.1.1 2002/05/03 03:28:10 root
17 * 25 9/14/99 2:21p Dave
18 * Fixed observer mode joining and ingame stuff.
20 * 24 9/10/99 9:44p Dave
21 * Bumped version # up. Make server reliable connects not have such a huge
24 * 23 9/07/99 4:01p Dave
25 * Fixed up a string.tbl paroblem (self destruct message). Make sure IPX
26 * does everything properly (setting up address when binding). Remove
27 * black rectangle background from UI_INPUTBOX.
29 * 22 8/26/99 8:51p Dave
30 * Gave multiplayer TvT messaging a heavy dose of sanity. Cheat codes.
32 * 21 8/16/99 4:06p Dave
33 * Big honking checkin.
35 * 20 7/26/99 5:50p Dave
36 * Revised ingame join. Better? We'll see....
38 * 19 7/20/99 1:49p Dave
39 * Peter Drake build. Fixed some release build warnings.
41 * 18 7/15/99 9:20a Andsager
42 * FS2_DEMO initial checkin
44 * 17 7/03/99 4:08p Dave
45 * Fixed wss_slots size issues. Fixed potentially nasty bug in low level
48 * 16 6/25/99 5:02p Jasenw
49 * Removed old debug code.
51 * 15 6/07/99 9:51p Dave
52 * Consolidated all multiplayer ports into one.
54 * 14 4/30/99 12:18p Dave
55 * Several minor bug fixes.
57 * 13 4/27/99 5:55p Dave
58 * Fixed Ras_connected bug with VSDK code.
60 * 12 4/27/99 2:59p Dave
61 * Potential fix for reliable socket connection problem.
63 * 11 4/23/99 11:07a Dave
64 * Added lots of debug multi.log output to psnet2
66 * 10 4/12/99 10:07p Dave
67 * Made network startup more forgiving. Added checkmarks to dogfight
68 * screen for players who hit commit.
70 * 9 3/10/99 6:50p Dave
71 * Changed the way we buffer packets for all clients. Optimized turret
72 * fired packets. Did some weapon firing optimizations.
74 * 8 3/09/99 6:24p Dave
75 * More work on object update revamping. Identified several sources of
76 * unnecessary bandwidth.
78 * 7 3/08/99 7:03p Dave
79 * First run of new object update system. Looks very promising.
81 * 6 1/24/99 11:37p Dave
82 * First full rev of beam weapons. Very customizable. Removed some bogus
83 * Int3()'s in low level net code.
85 * 5 1/06/99 2:24p Dave
86 * Stubs and release build fixes.
88 * 4 11/20/98 11:16a Dave
89 * Fixed up IPX support a bit. Making sure that switching modes and
90 * loading/saving pilot files maintains proper state.
92 * 3 11/19/98 4:19p Dave
93 * Put IPX sockets back in psnet. Consolidated all multiplayer config
96 * 2 11/19/98 8:04a Dave
97 * Full support for D3-style reliable sockets. Revamped packet lag/loss
98 * system, made it receiver side and at the lowest possible level.
104 #include <windowsx.h>
110 #include <raserror.h>
116 #include "multiutil.h"
117 #include "multilag.h"
118 #include "osregistry.h"
120 #include "multi_log.h"
121 #include "multi_rate.h"
126 // -------------------------------------------------------------------------------------------------------
127 // PSNET 2 DEFINES/VARS
130 BOOL Psnet_my_addr_valid;
131 net_addr Psnet_my_addr;
133 ubyte Null_address[6];
136 int Can_broadcast; // can we do broadcasting on our socket?
137 int Ipx_can_broadcast = 0;
138 int Tcp_can_broadcast = 0;
144 int Tcp_failure_code = 0;
145 int Ipx_failure_code = 0;
147 int Psnet_connection;
149 ushort Psnet_default_port;
151 // specified their internet connnection type
152 #define NETWORK_CONNECTION_NONE 1
153 #define NETWORK_CONNECTION_DIALUP 2
154 #define NETWORK_CONNECTION_LAN 3
156 // defines and variables to indicate network connection status
157 #define NETWORK_STATUS_NOT_INITIALIZED 1
158 #define NETWORK_STATUS_NO_WINSOCK 2 // winsock failed to initialize
159 #define NETWORK_STATUS_NO_PROTOCOL 3 // TCP/IP doesn't appear to be loaded
160 #define NETWORK_STATUS_NO_RELIABLE 4
161 #define NETWORK_STATUS_RUNNING 5 // everything should be running
163 // defintion of structures that actually leave this machine. psnet_send give us only
164 // the data that we want to send. We will add a header onto this data (packet sequence
165 // number, possibly a checksum). We must include a 2 byte flags variable into both structure
166 // since the receiving end of this packet must know whether or not to checksum the packet.
168 #define MAX_TOP_LAYER_PACKET_SIZE 680
170 // use the pack pragma to pack these structures to 2 byte aligment. Really only needed for
172 #define MAX_PACKET_BUFFERS 75
174 #pragma pack(push, 2)
176 // definition for a non-checksum packet
177 typedef struct network_packet
181 ubyte data[MAX_TOP_LAYER_PACKET_SIZE];
182 } network_naked_packet;
184 // structure definition for our packet buffers
185 typedef struct network_packet_buffer
190 ubyte data[MAX_TOP_LAYER_PACKET_SIZE];
191 } network_packet_buffer;
193 // struct for a bunch of network packet buffers
194 typedef struct network_packet_buffer_list {
195 network_packet_buffer psnet_buffers[MAX_PACKET_BUFFERS];
196 int psnet_seq_number;
198 int psnet_highest_id;
199 } network_packet_buffer_list;
204 #define MAXHOSTNAME 128
206 #define MAX_RECEIVE_BUFSIZE 4096 // 32 K, eh?
207 #define MAX_SEND_RETRIES 20 // number of retries when sending would block
208 #define MAX_LINGER_TIME 0 // in seconds -- when lingering to close a socket
211 //*******************************
212 #define MAXNETBUFFERS 150 // Maximum network buffers (For between network and upper level functions, which is
213 // required in case of out of order packets
214 #define NETRETRYTIME 0.75f // Time after sending before we resend
215 #define MIN_NET_RETRYTIME 0.2f
216 #define NETTIMEOUT 30 // Time after receiving the last packet before we drop that user
217 #define NETHEARTBEATTIME 3 // How often to send a heartbeat
218 #define MAXRELIABLESOCKETS 40 // Max reliable sockets to open at once...
219 #define NETBUFFERSIZE 600 // Max size of a network packet
221 #define RELIABLE_CONNECT_TIME 7 // how long we'll wait for a response when doing a reliable connect
223 int Nettimeout = NETTIMEOUT;
225 // Reliable packet stuff
226 #define RNT_ACK 1 // ACK Packet
227 #define RNT_DATA 2 // Data Packet
228 #define RNT_DATA_COMP 3 // Compressed Data Packet
229 #define RNT_REQ_CONN 4 // Requesting a connection
230 #define RNT_DISCONNECT 5 // Disconnecting a connection
231 #define RNT_HEARTBEAT 6 // Heartbeat -- send every NETHEARTBEATTIME
232 #define RNT_I_AM_HERE 7
234 #pragma pack(push,r_udp)
237 ubyte type; // packet type
239 ushort seq; // sequence packet 0-65535 used for ACKing also
240 ushort data_len; // length of data
241 float send_time; // Time the packet was sent, if an ACK the time the packet being ACK'd was sent.
242 ubyte data[NETBUFFERSIZE]; // Packet data
245 #define RELIABLE_PACKET_HEADER_ONLY_SIZE (sizeof(reliable_header)-NETBUFFERSIZE)
246 #define MAX_PING_HISTORY 10
249 ubyte buffer[NETBUFFERSIZE];
251 } reliable_net_sendbuffer;
254 ubyte buffer[NETBUFFERSIZE];
255 } reliable_net_rcvbuffer;
258 reliable_net_sendbuffer *sbuffers[MAXNETBUFFERS]; // This is an array of pointers for quick sorting
259 unsigned short ssequence[MAXNETBUFFERS]; // This is the sequence number of the given packet
260 float timesent[MAXNETBUFFERS];
261 int send_len[MAXNETBUFFERS];
262 reliable_net_rcvbuffer *rbuffers[MAXNETBUFFERS];
263 int recv_len[MAXNETBUFFERS];
264 unsigned short rsequence[MAXNETBUFFERS]; // This is the sequence number of the given packet
265 float last_packet_received; // For a given connection, this is the last packet we received
266 float last_packet_sent;
267 SOCKADDR addr; // SOCKADDR of our peer
268 ushort status; // Status of this connection
269 unsigned short oursequence; // This is the next sequence number the application is expecting
270 unsigned short theirsequence; // This is the next sequence number the peer is expecting
271 net_addr net_addr; // A FS2 network address structure
272 ubyte connection_type; // IPX, IP, modem, etc.
273 float pings[MAX_PING_HISTORY];
275 unsigned int num_ping_samples;
279 reliable_socket Reliable_sockets[MAXRELIABLESOCKETS];
281 // sockets for IPX and TCP (unreliable)
285 // the sockets that the game will use when selecting network type
286 SOCKET Unreliable_socket = INVALID_SOCKET;
289 // SOCKET Reliable_UDP_socket = INVALID_SOCKET;
290 // SOCKET Reliable_IPX_socket = INVALID_SOCKET;
292 float First_sent_iamhere = 0;
293 float Last_sent_iamhere = 0;
295 #define CONNECTSEQ 0x142 // Magic number for starting a connection, just so it isn't 0
297 unsigned int Serverconn = 0xffffffff;
299 #pragma pack(pop,r_udp)
300 //*******************************
303 network_packet_buffer_list Psnet_top_buffers[PSNET_NUM_TYPES];
305 // -------------------------------------------------------------------------------------------------------
306 // PSNET 2 FORWARD DECLARATIONS
309 // if the string is a legally formatted ip string
310 int psnet_is_valid_numeric_ip(char *ip);
312 // functions to get the status of a RAS connection
313 unsigned int psnet_ras_status();
315 // set some options on a socket
316 void psnet_socket_options( SOCKET sock );
318 // initialize ipx socket
319 int psnet_init_ipx();
321 // initialize tcp socket
322 int psnet_init_tcp();
324 // get time in seconds
325 float psnet_get_time();
327 // returns the ip address of this machine. use for calling bind() with to associate with the proper
328 // IP address and network device.
331 // initialize reliable sockets
332 int psnet_init_rel_tcp(int port, int should_listen);
333 int psnet_init_rel_ipx(int port, int should_listen);
335 // shutdown reliable sockets
336 void psnet_rel_close();
338 // initialize the buffering system
339 void psnet_buffer_init(network_packet_buffer_list *l);
341 // buffer a packet (maintain order!)
342 void psnet_buffer_packet(network_packet_buffer_list *l, ubyte *data, int length, net_addr *from);
344 // get the index of the next packet in order!
345 int psnet_buffer_get_next(network_packet_buffer_list *l, ubyte *data, int *length, net_addr *from);
348 // -------------------------------------------------------------------------------------------------------
349 // PSNET 2 TOP LAYER FUNCTIONS - these functions simply buffer and store packets based upon type (see PSNET_TYPE_* defines)
352 // wrappers around select() and recvfrom() for lagging/losing data
353 int RECVFROM(SOCKET s, char *buf, int len, int flags, sockaddr *from, int *fromlen, int psnet_type)
355 network_packet_buffer_list *l;
361 Assert((psnet_type >= 0) && (psnet_type < PSNET_NUM_TYPES));
362 if((psnet_type < 0) || (psnet_type >= PSNET_NUM_TYPES)){
365 l = &Psnet_top_buffers[psnet_type];
367 // if we have no buffer! The user should have made sure this wasn't the case by calling SELECT()
368 ret = psnet_buffer_get_next(l, (ubyte*)buf, &ret_len, &addr);
374 // otherwise, stuff the outgoing data
375 switch ( Socket_type ) {
377 ((SOCKADDR_IPX*)from)->sa_socket = htons(addr.port);
378 memcpy(((SOCKADDR_IPX*)from)->sa_nodenum, addr.addr, 6);
379 memcpy(((SOCKADDR_IPX*)from)->sa_netnum, addr.net_id, 4);
380 ((SOCKADDR_IPX*)from)->sa_family = AF_IPX;
381 *fromlen = sizeof(SOCKADDR_IPX);
385 ((SOCKADDR_IN*)from)->sin_port = htons(addr.port);
386 memcpy(&((SOCKADDR_IN*)from)->sin_addr.S_un.S_addr, addr.addr, 4);
387 ((SOCKADDR_IN*)from)->sin_family = AF_INET;
388 *fromlen = sizeof(SOCKADDR_IN);
400 // wrappers around select() and recvfrom() for lagging/losing data
401 int SELECT(int nfds, fd_set FAR * readfds, fd_set FAR * writefds, fd_set FAR * exceptfds, const struct timeval FAR * timeout, int psnet_type)
403 network_packet_buffer_list *l;
405 // if this is a check for writability, just return the select
406 if(writefds != NULL){
407 return select(nfds, readfds, writefds, exceptfds, timeout);
411 Assert((psnet_type >= 0) && (psnet_type < PSNET_NUM_TYPES));
412 if((psnet_type < 0) || (psnet_type >= PSNET_NUM_TYPES)){
415 l = &Psnet_top_buffers[psnet_type];
417 // do we have any buffers in here?
418 if((l->psnet_lowest_id == -1) || (l->psnet_lowest_id > l->psnet_highest_id)){
426 // wrappers around sendto to sorting through different packet types
427 int SENDTO(SOCKET s, char * buf, int len, int flags, sockaddr *to, int tolen, int psnet_type)
429 char outbuf[MAX_TOP_LAYER_PACKET_SIZE + 150];
432 outbuf[0] = (char)psnet_type;
433 memcpy(&outbuf[1], buf, len);
435 // is the socket writeable?
438 return sendto(s, outbuf, len + 1, flags, (SOCKADDR*)to, tolen);
441 // call this once per frame to read everything off of our socket
442 void PSNET_TOP_LAYER_PROCESS()
445 SOCKADDR_IN ip_addr; // UDP/TCP socket structure
446 SOCKADDR_IPX ipx_addr; // IPX socket structure
449 int read_len, from_len;
451 network_naked_packet packet_read;
453 // clear the addresses to remove compiler warnings
454 memset(&ip_addr, 0, sizeof(SOCKADDR_IN));
455 memset(&ipx_addr, 0, sizeof(SOCKADDR_IPX));
457 if ( Network_status != NETWORK_STATUS_RUNNING ) {
458 ml_printf("Network ==> socket not inited in PSNET_TOP_LAYER_PROCESS\n");
463 // check if there is any data on the socket to be read. The amount of data that can be
464 // atomically read is stored in len.
467 FD_SET( Unreliable_socket, &rfds );
471 if ( select( -1, &rfds, NULL, NULL, &timeout) == SOCKET_ERROR ) {
472 ml_printf("Error %d doing a socket select on read\n", WSAGetLastError());
476 // if the read file descriptor is not set, then bail!
477 if ( !FD_ISSET(Unreliable_socket, &rfds) ){
481 // get data off the socket and process
482 read_len = SOCKET_ERROR;
483 switch ( Socket_type ) {
485 from_len = sizeof(SOCKADDR_IPX);
486 read_len = recvfrom( Unreliable_socket, (char*)packet_read.data, MAX_TOP_LAYER_PACKET_SIZE, 0, (SOCKADDR*)&ipx_addr, &from_len);
490 from_len = sizeof(SOCKADDR_IN);
491 read_len = recvfrom( Unreliable_socket, (char*)packet_read.data, MAX_TOP_LAYER_PACKET_SIZE, 0, (SOCKADDR*)&ip_addr, &from_len);
499 // set the from_addr for storage into the packet buffer structure
500 from_addr.type = Socket_type;
502 switch ( Socket_type ) {
504 from_addr.port = ntohs( ipx_addr.sa_socket );
505 memcpy(from_addr.addr, ipx_addr.sa_nodenum, 6 );
506 memcpy(from_addr.net_id, ipx_addr.sa_netnum, 4 );
510 from_addr.port = ntohs( ip_addr.sin_port );
511 memset(from_addr.addr, 0x00, 6);
512 memcpy(from_addr.addr, &ip_addr.sin_addr.S_un.S_addr, 4);
521 if ( read_len == SOCKET_ERROR ) {
522 // int x = WSAGetLastError();
523 ml_printf("Socket error on socket_get_data()");
527 // determine the packet type
528 int packet_type = packet_read.data[0];
529 // mprintf(("TOP LAYER PACKET %d!\n", packet_type));
530 if((packet_type < 0) || (packet_type >= PSNET_NUM_TYPES)){
534 psnet_buffer_packet(&Psnet_top_buffers[packet_type], packet_read.data + 1, read_len - 1, &from_addr);
540 // -------------------------------------------------------------------------------------------------------
544 // initialize psnet to use the specified port
545 void psnet_init( int protocol, int port_num )
547 char *internet_connection;
553 #if defined(DEMO) || defined(OEM_BUILD) // not for FS2_DEMO
557 // GAME PORT INITIALIZATION STUFF
558 if ( Network_status == NETWORK_STATUS_RUNNING ){
559 ml_string("Skipping psnet_init() because network already running");
563 internet_connection = os_config_read_string(NULL, "NetworkConnection", "none");
564 if ( !stricmp(internet_connection, NOX("dialup")) ) {
565 ml_string("psnet_init() detected dialup connection");
567 Psnet_connection = NETWORK_CONNECTION_DIALUP;
568 } else if ( !stricmp(internet_connection, NOX("lan")) ) {
569 ml_string("psnet_init() detected lan connection");
571 Psnet_connection = NETWORK_CONNECTION_LAN;
573 ml_string("psnet_init() detected no connection");
575 Psnet_connection = NETWORK_CONNECTION_NONE;
578 Network_status = NETWORK_STATUS_NO_WINSOCK;
579 if (WSAStartup(0x101, &wsa_data )){
583 // get the port for running this game on. Be careful that it cannot be out of bounds
584 Psnet_default_port = DEFAULT_GAME_PORT;
585 if ( (port_num > 1023) && (port_num < USHRT_MAX) ) {
586 Psnet_default_port = (ushort)port_num;
589 // initialize TCP now
591 if(!psnet_init_tcp()){
592 ml_printf("Error on TCP startup %d\n", Tcp_failure_code);
596 if(!psnet_init_rel_tcp(Psnet_default_port + 1, 0)){
597 ml_printf("Network", "Error on TCP startup %d\n", Tcp_failure_code);
603 // clear reliable sockets
604 reliable_socket *rsocket;
606 for(j=0; j<MAXRELIABLESOCKETS; j++){
607 rsocket=&Reliable_sockets[j];
608 memset(rsocket,0,sizeof(reliable_socket));
611 // initialize IPX not
613 if(!psnet_init_ipx()){
614 ml_printf("Network", "Error on IPX startup %d\n", Ipx_failure_code);
618 if(!psnet_init_rel_ipx(Psnet_default_port + 1, 0)){
619 ml_printf("Network", "Error on IPX startup %d\n", Ipx_failure_code);
625 // determine if we've successfully initialized the protocol we want
626 if(!Tcp_active && !Ipx_active){
627 Network_status = NETWORK_STATUS_NO_PROTOCOL;
629 ml_string("No protocol in psnet_init()!");
632 // specified network timeout
633 Nettimeout = NETTIMEOUT;
634 if(Cmdline_timeout > 0){
635 Nettimeout = Cmdline_timeout;
641 if(Network_status != NETWORK_STATUS_NO_PROTOCOL){
642 // set network to be running
643 Network_status = NETWORK_STATUS_RUNNING;
645 // determine if our socket can broadcast
646 Can_broadcast = Tcp_can_broadcast || Ipx_can_broadcast;
648 // initialize all packet type buffers
649 for(idx=0; idx<PSNET_NUM_TYPES; idx++){
650 psnet_buffer_init(&Psnet_top_buffers[idx]);
658 if ( Network_status != NETWORK_STATUS_RUNNING ){
662 WSACancelBlockingCall();
664 if ( TCP_socket != INVALID_SOCKET ) {
665 shutdown( TCP_socket, 1 );
666 closesocket( TCP_socket );
669 if ( IPX_socket != INVALID_SOCKET ) {
670 shutdown( IPX_socket, 1 );
671 closesocket( IPX_socket );
675 //Warning( LOCATION, "Error closing wsock!\n" );
678 // close down all reliable sockets - this forces them to
679 // send a disconnect to any remote machines
682 Network_status = NETWORK_STATUS_NOT_INITIALIZED;
685 // set the protocol to use
686 int psnet_use_protocol( int protocol )
689 SOCKADDR_IPX ipx_addr;
692 // zero out my address
693 Psnet_my_addr_valid = 0;
694 memset( &Psnet_my_addr, 0, sizeof(Psnet_my_addr) );
696 // wait until we choose a protocol to determine if we can broadcast
699 ml_string("In psnet_use_protocol()");
701 switch ( protocol ) {
703 ml_string("psnet_use_protocol() selecting IPX");
705 // assign the IPX_* sockets to the socket values used elsewhere
706 Unreliable_socket = IPX_socket;
708 Can_broadcast = Ipx_can_broadcast;
710 ml_printf("Psnet : IPX broadcast\n");
713 // get the socket name for the IPX_socket, and put it into My_addr
714 len = sizeof(SOCKADDR_IPX);
715 if ( getsockname(IPX_socket, (SOCKADDR *)&ipx_addr, &len) == SOCKET_ERROR ) {
716 ml_printf("Unable to get sock name for IPX unreliable socket (%d)\n", WSAGetLastError() );
720 memcpy(Psnet_my_addr.net_id, ipx_addr.sa_netnum, 4);
721 memcpy(Psnet_my_addr.addr, ipx_addr.sa_nodenum, 6);
722 Psnet_my_addr.port = Psnet_default_port;
724 ml_printf("Psnet using - NET_IPX\n");
728 if ( Network_status != NETWORK_STATUS_RUNNING ){
729 ml_string("Network_status != NETWORK_STATUS_RUNNING in NET_TCP in psnet_use_protocol()");
733 // assign the TCP_* sockets to the socket values used elsewhere
734 Unreliable_socket = TCP_socket;
736 Can_broadcast = Tcp_can_broadcast;
738 ml_printf("Psnet : TCP broadcast\n");
741 // get the socket name for the IPX_socket, and put it into My_addr
742 len = sizeof(SOCKADDR_IN);
743 if ( getsockname(TCP_socket, (SOCKADDR *)&ip_addr, &len) == SOCKET_ERROR ) {
744 ml_printf("Unable to get sock name for TCP unreliable socket (%d)\n", WSAGetLastError() );
749 memset(Psnet_my_addr.net_id, 0, 4);
750 memcpy(Psnet_my_addr.addr, &ip_addr.sin_addr, 6);
751 Psnet_my_addr.port = Psnet_default_port;
753 ml_printf("Psnet using - NET_TCP\n");
761 Psnet_my_addr.type = protocol;
762 Socket_type = protocol;
767 // get the status of the network
768 int psnet_get_network_status()
770 // first case is when "none" is selected
771 if ( Psnet_connection == NETWORK_CONNECTION_NONE ) {
772 return NETWORK_ERROR_NO_TYPE;
775 // first, check the connection status of the network
776 if ( Network_status == NETWORK_STATUS_NO_WINSOCK )
777 return NETWORK_ERROR_NO_WINSOCK;
779 if ( Network_status == NETWORK_STATUS_NO_PROTOCOL ){
780 return NETWORK_ERROR_NO_PROTOCOL;
783 // network is running -- be sure that the RAS people know to connect if they currently cannot.
785 if ( Psnet_connection == NETWORK_CONNECTION_DIALUP ) {
786 // if on a dialup connection, be sure that RAS is active.
787 if ( !Ras_connected ) {
788 return NETWORK_ERROR_CONNECT_TO_ISP;
790 } else if ( Psnet_connection == NETWORK_CONNECTION_LAN ) {
791 // if on a LAN, and they have a dialup connection active, return error to indicate that they need
792 // to pick the right connection type
793 if ( Ras_connected ) {
794 return NETWORK_ERROR_LAN_AND_RAS;
797 return NETWORK_ERROR_NONE;
800 // convert a net_addr to a string
801 char* psnet_addr_to_string( char * text, net_addr * address )
804 if ( Network_status != NETWORK_STATUS_RUNNING ) {
805 strcpy( text, XSTR("[no networking]",910) );
811 switch ( address->type ) {
813 sprintf(text, "%x %x %x %x: %x %x %x %x %x %x", address->net_id[0],
826 memcpy(&temp_addr.s_addr, address->addr, 4);
827 strcpy( text, inet_ntoa(temp_addr) );
839 // convert a string to a net addr
840 void psnet_string_to_addr( net_addr * address, char * text )
843 char str[255], *c, *port;
846 if ( Network_status != NETWORK_STATUS_RUNNING ) {
847 strcpy( text, XSTR("[no networking]",910) );
851 // copy the text string to local storage to look for ports
852 Assert( strlen(text) < 255 );
854 c = strrchr(str, ':');
861 switch ( address->type ) {
863 Int3(); // no support for this yet
867 addr.s_addr = inet_addr(str);
868 // if we get INADDR_NONE returns, then we need to try and resolve the host
870 if ( addr.s_addr == INADDR_NONE ) {
871 he = gethostbyname( str );
872 // returns a non-null pointer if successful, so get the address
874 addr.s_addr = ((in_addr *)(he->h_addr))->s_addr; // this is the address in network byte order
876 addr.s_addr = INADDR_NONE;
880 memset(address->addr, 0x00, 6);
881 memcpy(address->addr, &addr.s_addr, 4);
883 address->port = (ushort)(atoi(port));
894 // compare 2 addresses
895 int psnet_same( net_addr * a1, net_addr * a2 )
897 return !memcmp(a1->addr, a2->addr, 6);
900 // send data unreliably
901 int psnet_send( net_addr * who_to, void * data, int len, int np_index )
903 // send data unreliably
905 SOCKADDR_IN sockaddr; // UDP/TCP socket structure
906 SOCKADDR_IPX ipx_addr; // IPX socket structure
908 ubyte iaddr[6], *send_data;
911 struct timeval timeout;
913 // always use the reliable socket
914 send_sock = Unreliable_socket;
916 if ( Network_status != NETWORK_STATUS_RUNNING ) {
917 ml_printf("Network ==> Socket not inited in psnet_send\n");
921 if ( psnet_same( who_to, &Psnet_my_addr) ){
925 memset(iaddr, 0x00, 6);
926 memcpy(iaddr, who_to->addr, 6);
928 if ( memcmp(iaddr, Null_address, 6) == 0) {
929 ml_printf("Network ==> send to address is 0 in psnet_send\n");
936 ml_printf("Network ==> destination port %d invalid in psnet_send\n", port);
940 // stuff the data with the type
941 send_data = (ubyte*)data;
945 FD_SET( send_sock, &wfds );
949 if ( SELECT( -1, NULL, &wfds, NULL, &timeout, PSNET_TYPE_UNRELIABLE) == SOCKET_ERROR ) {
950 ml_printf("Error on blocking select for write %d\n", WSAGetLastError() );
954 // if the write file descriptor is not set, then bail!
955 if ( !FD_ISSET(send_sock, &wfds ) ){
960 switch ( who_to->type ) {
962 ipx_addr.sa_socket = htons(port);
963 ipx_addr.sa_family = AF_IPX;
964 memcpy(ipx_addr.sa_nodenum, iaddr, 6);
965 memcpy(ipx_addr.sa_netnum, who_to->net_id, 4);
967 ret = SENDTO(send_sock, (char *)send_data, send_len, 0, (SOCKADDR*)&ipx_addr, sizeof(ipx_addr), PSNET_TYPE_UNRELIABLE);
969 multi_rate_add(np_index, "ipx", send_len);
970 if ( (ret != SOCKET_ERROR) && (ret != send_len) ){
971 // ml_printf("requested to send %d bytes -- sent %d instead!!!\n", send_len, ret);
976 sockaddr.sin_family = AF_INET;
977 memcpy(&sockaddr.sin_addr.s_addr, iaddr, 4);
978 sockaddr.sin_port = htons(port);
980 multi_rate_add(np_index, "udp(h)", send_len + UDP_HEADER_SIZE);
981 multi_rate_add(np_index, "udp", send_len);
982 ret = SENDTO( send_sock, (char *)send_data, send_len, 0, (SOCKADDR*)&sockaddr, sizeof(sockaddr), PSNET_TYPE_UNRELIABLE );
986 Assert(0); // unknown protocol
991 if ( ret != SOCKET_ERROR ) {
994 //Warning( LOCATION, "Couldn't send data (0x%x)!\n", WSAGetLastError() );
998 // get data from the unreliable socket
999 int psnet_get( void * data, net_addr * from_addr )
1003 // try and get a free buffer and return its size
1004 if(psnet_buffer_get_next(&Psnet_top_buffers[PSNET_TYPE_UNRELIABLE], (ubyte*)data, &buffer_size, from_addr)){
1012 // broadcast data on unreliable socket
1013 int psnet_broadcast( net_addr * who_to, void * data, int len )
1015 if ( Network_status != NETWORK_STATUS_RUNNING ) {
1016 ml_printf("Network ==> Socket not inited in psnet_broadcast\n");
1020 if ( !Can_broadcast ) {
1021 ml_printf("Cannot broadcast -- returning without doing anything\n");
1025 ubyte broadcast[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
1027 // broadcasting works on a local subnet which is all we really want to do for now anyway.
1028 // we might keep this in as an option for freespace later.
1029 switch ( who_to->type ) {
1032 memcpy(who_to->addr, broadcast, 6);
1033 psnet_send(who_to, data, len);
1041 // flush all sockets
1044 ubyte data[MAX_TOP_LAYER_PACKET_SIZE + 250];
1047 while ( psnet_get( data, &from_addr ) > 0 ) ;
1050 // if the passed string is a valid IP string
1051 int psnet_is_valid_ip_string( char *ip_string, int allow_port )
1054 struct hostent *host_ent;
1057 // our addresses may have ports, so make local copy and remove port number
1058 Assert( strlen(ip_string) < 255 );
1059 strcpy(str, ip_string);
1060 c = strrchr(str, ':');
1065 addr.s_addr = inet_addr(ip_string);
1066 if ( addr.s_addr != INADDR_NONE ){
1067 // make sure the ip string is a valid format string
1068 if(psnet_is_valid_numeric_ip(ip_string)){
1073 // try name resolution
1074 host_ent = gethostbyname( ip_string );
1079 // valid host entry so return 1;
1084 // -------------------------------------------------------------------------------------------------------
1085 // PSNET 2 RELIABLE SOCKET FUNCTIONS
1089 int psnet_rel_ping_compare( const void *arg1, const void *arg2 )
1091 float *ping1 = (float *)arg1;
1092 float *ping2 = (float *)arg2;
1094 if(*ping1==*ping2) return 0;
1095 else if(*ping1>*ping2) return 1;
1096 else if(*ping1<*ping2) return -1;
1101 void psnet_rel_send_ack(SOCKADDR *raddr, unsigned int sig, ubyte link_type, float time_sent)
1104 reliable_header ack_header;
1105 ack_header.type = RNT_ACK;
1106 ack_header.data_len = sizeof(unsigned int);
1107 ack_header.send_time = time_sent;
1108 memcpy(&ack_header.data,&sig,sizeof(unsigned int));
1109 switch (link_type) {
1112 ml_string("No IPX in rel_send_ack()");
1115 ret = SENDTO(Unreliable_socket, (char *)&ack_header, RELIABLE_PACKET_HEADER_ONLY_SIZE+sizeof(unsigned int), 0, raddr, sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1119 ml_string("No TCP in rel_send_ack()");
1122 ret = SENDTO(Unreliable_socket, (char *)&ack_header, RELIABLE_PACKET_HEADER_ONLY_SIZE+sizeof(unsigned int), 0, raddr, sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1125 ml_string("Unknown protocol type in nw_SendReliable()");
1131 // function to shutdown and close the given socket. It takes a couple of things into consideration
1132 // when closing, such as possibly reiniting reliable sockets if they are closed here.
1133 void psnet_rel_close_socket( PSNET_SOCKET_RELIABLE *sockp )
1135 reliable_header diss_conn_header;
1137 // if the socket is out of range
1138 if(*sockp>=MAXRELIABLESOCKETS)
1140 ml_printf("Invalid socket id passed to nw_NewCloseSocket() -- %d\n",*sockp);
1143 ml_printf("Closing socket %d\n",*sockp);
1145 // go through every buffer and "free it up(tm)"
1147 for(i=0;i<MAXNETBUFFERS;i++){
1148 if(Reliable_sockets[*sockp].rbuffers[i]){
1149 if(Reliable_sockets[*sockp].rbuffers[i] != NULL){
1150 free(Reliable_sockets[*sockp].rbuffers[i]);
1152 Reliable_sockets[*sockp].rbuffers[i] = NULL;
1153 Reliable_sockets[*sockp].rsequence[i] = 0;
1155 if(Reliable_sockets[*sockp].sbuffers[i]){
1156 if(Reliable_sockets[*sockp].sbuffers[i] != NULL){
1157 free(Reliable_sockets[*sockp].sbuffers[i]);
1159 Reliable_sockets[*sockp].sbuffers[i] = NULL;
1160 Reliable_sockets[*sockp].rsequence[i] = 0;
1164 // send a disconnect packet to the socket on the other end
1165 diss_conn_header.type = RNT_DISCONNECT;
1166 diss_conn_header.seq = CONNECTSEQ;
1167 diss_conn_header.data_len = 0;
1168 if(*sockp==Serverconn){
1169 Serverconn = 0xffffffff;
1171 switch ( Reliable_sockets[*sockp].connection_type ) {
1176 SENDTO(Unreliable_socket, (char *)&diss_conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[*sockp].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1182 SENDTO(Unreliable_socket, (char *)&diss_conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[*sockp].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1185 ml_printf("Unknown protocol type in nw_CloseSocket()!\n");
1189 memset(&Reliable_sockets[*sockp],0,sizeof(reliable_socket));
1190 Reliable_sockets[*sockp].status = RNF_UNUSED;
1193 // function to check the status of the reliable socket and try to re-initialize it if necessary.
1194 // win95 seems to have trouble doing a reinit of the socket immediately after close, so this
1195 // function exists to check the status, and reinitialize if we need to
1196 int psnet_rel_check()
1201 // send data reliably
1202 int psnet_rel_send(PSNET_SOCKET_RELIABLE socketid, ubyte *data, int length, int np_index)
1206 reliable_socket *rsocket;
1208 if(socketid >= MAXRELIABLESOCKETS){
1209 ml_printf("Invalid socket id passed to psnet_rel_send() -- %d\n",socketid);
1213 Assert(length<sizeof(reliable_header));
1216 rsocket=&Reliable_sockets[socketid];
1217 if(rsocket->status!=RNF_CONNECTED) {
1218 //We can't send because this isn't a connected reliable socket.
1219 ml_printf("Can't send packet because of status %d in nw_SendReliable(). socket = %d\n",rsocket->status,socketid);
1223 // Add the new packet to the sending list and send it.
1224 for(i=0;i<MAXNETBUFFERS;i++){
1225 if(NULL==rsocket->sbuffers[i]){
1226 reliable_header send_header;
1227 int send_this_packet=1;
1229 rsocket->send_len[i] = length;
1230 rsocket->sbuffers[i] = (reliable_net_sendbuffer *)malloc(sizeof(reliable_net_sendbuffer));
1232 memcpy(rsocket->sbuffers[i]->buffer,data,length);
1234 send_header.seq = rsocket->theirsequence;
1235 rsocket->ssequence[i] = rsocket->theirsequence;
1237 memcpy(send_header.data,data,length);
1238 send_header.data_len = (ushort)length;
1239 send_header.type = RNT_DATA;
1240 send_header.send_time = psnet_get_time();
1241 // SOCKADDR_IN * rsockaddr = (SOCKADDR_IN *)&rsocket->addr;
1243 if (send_this_packet){
1244 switch ( rsocket->connection_type ){
1249 bytesout = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1255 multi_rate_add(np_index, "tcp(h)", RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i]);
1256 bytesout = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1259 ml_printf("Unknown protocol type in nw_SendReliable()!\n");
1264 if((bytesout==SOCKET_ERROR)&&(WSAEWOULDBLOCK==WSAGetLastError())){
1265 //This will cause it to try to send again next frame. (or sooner)
1266 rsocket->timesent[i] = psnet_get_time()-(NETRETRYTIME*4);
1268 rsocket->timesent[i] = psnet_get_time();
1272 rsocket->theirsequence++;
1276 ml_printf("PSNET RELIABLE SEND BUFFER OVERRUN. socket = %d\n",socketid);
1282 // -1 socket not connected
1283 // 0 No packet ready to receive
1284 // >0 Buffer filled with the number of bytes recieved
1285 int psnet_rel_get(PSNET_SOCKET socketid, ubyte *buffer, int max_len)
1289 reliable_socket *rsocket = NULL;
1291 if(socketid >= MAXRELIABLESOCKETS){
1292 ml_printf("Invalid socket id passed to nw_NewReceiveReliable() -- %d\n",socketid);
1295 rsocket = &Reliable_sockets[socketid];
1296 if( (RNF_CONNECTED!=rsocket->status) && (RNF_LIMBO!=rsocket->status) ){
1297 ml_printf("Can't receive packet because it isn't connected in nw_ReceiveReliable(). socket = %d\n",socketid);
1300 //If the buffer position is the position we are waiting for, fill in
1301 //the buffer we received in the call to this function and return true
1303 for(i=0; i<MAXNETBUFFERS; i++){
1304 if((rsocket->rsequence[i] == rsocket->oursequence) && rsocket->rbuffers[i]){
1305 memcpy(buffer,rsocket->rbuffers[i]->buffer, rsocket->recv_len[i]);
1306 free(rsocket->rbuffers[i]);
1307 rsocket->rbuffers[i] = NULL;
1308 rsocket->rsequence[i] = 0;
1309 rsocket->oursequence++;
1310 return rsocket->recv_len[i];
1317 // process all active reliable sockets
1318 void psnet_rel_work()
1322 int max_len = NETBUFFERSIZE;
1325 static reliable_header rcv_buff;
1326 static SOCKADDR rcv_addr;
1328 int addrlen = sizeof(SOCKADDR);
1329 unsigned int rcvid;//The id of who we actually received a packet from, as opposed to socketid parm
1333 PSNET_TOP_LAYER_PROCESS();
1335 // negotitate initial connection with the server
1336 reliable_socket *rsocket = NULL;
1337 if(Serverconn != 0xffffffff){
1338 //Check to see if we need to send a packet out.
1339 if((Reliable_sockets[Serverconn].status==RNF_LIMBO) && ((Serverconn != 0xffffffff) && fl_abs((psnet_get_time() - Last_sent_iamhere))>NETRETRYTIME) ){
1340 reliable_header conn_header;
1341 //Now send I_AM_HERE packet
1342 conn_header.type = RNT_I_AM_HERE;
1343 conn_header.seq = (ushort)(~CONNECTSEQ);
1344 conn_header.data_len = 0;
1345 Last_sent_iamhere = psnet_get_time();
1346 int ret = SOCKET_ERROR;
1347 switch ( Reliable_sockets[Serverconn].connection_type ) {
1350 ml_printf("Unable to use this network connection type in nw_WorkReliable()\n");
1354 ret = SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[Serverconn].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1358 ml_printf("Unable to use this network connection type in nw_WorkReliable()\n");
1362 ret = SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&Reliable_sockets[Serverconn].addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1365 ml_printf("Unknown protocol type in nw_WorkReliable()!\n");
1370 if((ret == SOCKET_ERROR) && (WSAEWOULDBLOCK == WSAGetLastError())){
1371 Reliable_sockets[Serverconn].last_packet_sent = psnet_get_time()-NETRETRYTIME;
1373 Reliable_sockets[Serverconn].last_packet_sent = psnet_get_time();
1379 net_addr d3_rcv_addr;
1380 SOCKADDR_IN *rcvaddr,*rsockaddr;
1381 int ipx_has_data = 0;
1382 int udp_has_data = 0;
1386 if(Ipx_active && (Socket_type == NET_IPX)){
1388 FD_SET(Unreliable_socket, &read_fds);
1389 ipx_has_data = SELECT(0,&read_fds,NULL,NULL,&timeout, PSNET_TYPE_RELIABLE);
1391 if(Tcp_active && (Socket_type == NET_TCP)){
1393 FD_SET(Unreliable_socket, &read_fds);
1394 udp_has_data = SELECT(0,&read_fds,NULL,NULL,&timeout, PSNET_TYPE_RELIABLE);
1397 addrlen = sizeof(SOCKADDR);
1399 SOCKADDR_IPX *ipx_addr = (SOCKADDR_IPX *)&rcv_addr;
1400 memset(&d3_rcv_addr,0,sizeof(net_addr));
1401 memset(&rcv_addr,0,sizeof(SOCKADDR));
1402 bytesin = RECVFROM(Unreliable_socket, (char *)&rcv_buff,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1403 memcpy(d3_rcv_addr.addr, ipx_addr->sa_nodenum, 6);
1404 memcpy(d3_rcv_addr.net_id, ipx_addr->sa_netnum, 4);
1405 d3_rcv_addr.type = NET_IPX;
1406 link_type = NET_IPX;
1407 } else if(udp_has_data){
1408 SOCKADDR_IN *tcp_addr = (SOCKADDR_IN *)&rcv_addr;
1409 memset(&d3_rcv_addr,0,sizeof(net_addr));
1410 memset(&rcv_addr,0,sizeof(SOCKADDR));
1411 bytesin = RECVFROM(Unreliable_socket, (char *)&rcv_buff,sizeof(reliable_header), 0, (SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1412 memcpy(d3_rcv_addr.addr, &tcp_addr->sin_addr.s_addr, 4);
1413 d3_rcv_addr.port = tcp_addr->sin_port;
1414 d3_rcv_addr.type = NET_TCP;
1415 link_type = NET_TCP;
1417 //Neither socket had data waiting
1422 ml_printf("recvfrom returned an error! -- %d\n",WSAGetLastError());
1423 //Int3();//See Kevin
1427 //Someone wants to connect, so find a slot
1428 if(rcv_buff.type == RNT_REQ_CONN){
1429 for(i=1; i<MAXRELIABLESOCKETS; i++){
1430 if( (Reliable_sockets[i].status == RNF_CONNECTED) || (Reliable_sockets[i].status == RNF_LIMBO) ){
1431 //if(memcmp(&rcv_addr,&reliable_sockets[i].addr,sizeof(SOCKADDR))==0)
1432 if(memcmp(&d3_rcv_addr, &Reliable_sockets[i].net_addr, sizeof(net_addr)) == 0){
1433 //We already have a reliable link to this user, so we will ignore it...
1434 ml_printf("Received duplicate connection request. %d\n",i);
1435 //reliable_sockets[i].last_packet_received = timer_GetTime();
1436 psnet_rel_send_ack(&Reliable_sockets[i].addr, rcv_buff.seq, link_type, rcv_buff.send_time);
1437 //We will change this as a hack to prevent later code from hooking us up
1438 rcv_buff.type = 0xff;
1443 for(i=1; i<MAXRELIABLESOCKETS; i++){
1444 if(Reliable_sockets[i].status == RNF_UNUSED){
1445 //Add the new connection here.
1446 Reliable_sockets[i].connection_type=link_type;
1447 memcpy(&Reliable_sockets[i].net_addr, &d3_rcv_addr, sizeof(net_addr));
1448 memcpy(&Reliable_sockets[i].addr ,&rcv_addr, sizeof(SOCKADDR));
1449 Reliable_sockets[i].ping_pos = 0;
1450 Reliable_sockets[i].num_ping_samples = 0;
1451 Reliable_sockets[i].status = RNF_LIMBO;
1452 Reliable_sockets[i].last_packet_received = psnet_get_time();
1453 rsocket = &Reliable_sockets[i];
1454 rcvaddr = (SOCKADDR_IN *)&rcv_addr;
1455 ml_printf("Connect from %s:%d\n", inet_ntoa(rcvaddr->sin_addr), htons(rcvaddr->sin_port));
1459 if(i==MAXRELIABLESOCKETS){
1460 //No more connections!
1461 ml_printf("Out of incoming reliable connection sockets\n");
1462 //Int3();//See Kevin
1465 psnet_rel_send_ack(&rsocket->addr,rcv_buff.seq,link_type,rcv_buff.send_time);
1468 //Find out if this is a packet from someone we were expecting a packet.
1469 rcvaddr = (SOCKADDR_IN *)&rcv_addr;
1470 for(i=1; i<MAXRELIABLESOCKETS; i++){
1471 rsockaddr = (SOCKADDR_IN *)&Reliable_sockets[i].addr;
1472 if(memcmp(&d3_rcv_addr,&Reliable_sockets[i].net_addr,sizeof(net_addr)) == 0){
1473 rsocket=&Reliable_sockets[i];
1478 if(NULL == rsocket){
1479 ml_printf("Received reliable data from unconnected client.\n");
1480 ml_printf("Received from %s:%d\n",inet_ntoa(rcvaddr->sin_addr),rcvaddr->sin_port);
1483 rsocket->last_packet_received = psnet_get_time();
1485 if(rsocket->status != RNF_CONNECTED){
1487 if(rsocket->status == RNF_LIMBO){
1488 //this is our connection to the server
1489 if(Serverconn != 0xffffffff){
1490 if(rcv_buff.type == RNT_ACK){
1491 int *acknum = (int *)&rcv_buff.data;
1492 if(*acknum == (~CONNECTSEQ & 0xffff)){
1493 rsocket->status = RNF_CONNECTED;
1494 ml_printf("Got ACK for IAMHERE!\n");
1498 } else if(rcv_buff.type == RNT_I_AM_HERE){
1499 rsocket->status = RNF_CONNECTING;
1500 psnet_rel_send_ack(&rsocket->addr,rcv_buff.seq,link_type,rcv_buff.send_time);
1501 ml_printf("Got IAMHERE!\n");
1505 if((rcv_buff.type == RNT_DATA) && (Serverconn != 0xffffffff)){
1506 rsocket->status = RNF_CONNECTED;
1508 rsocket->last_packet_received = psnet_get_time();
1512 //Update the last recv variable so we don't need a heartbeat
1513 rsocket->last_packet_received = psnet_get_time();
1515 if(rcv_buff.type == RNT_HEARTBEAT){
1518 if(rcv_buff.type == RNT_ACK){
1520 rsocket->num_ping_samples++;
1522 rsocket->pings[rsocket->ping_pos] = rsocket->last_packet_received - rcv_buff.send_time;
1523 if(rsocket->num_ping_samples >= MAX_PING_HISTORY){
1524 float sort_ping[MAX_PING_HISTORY];
1525 for(int a=0;a<MAX_PING_HISTORY;a++){
1526 sort_ping[a] = rsocket->pings[a];
1529 qsort(sort_ping ,MAX_PING_HISTORY, sizeof(float), psnet_rel_ping_compare);
1530 rsocket->mean_ping = ((sort_ping[MAX_PING_HISTORY/2]+sort_ping[(MAX_PING_HISTORY/2)+1]))/2;
1532 rsocket->ping_pos++;
1533 if(rsocket->ping_pos >= MAX_PING_HISTORY){
1534 rsocket->ping_pos=0;
1537 // if this is an ack for a send buffer on the socket, kill the send buffer. its done
1538 for(i=0; i<MAXNETBUFFERS; i++){
1539 unsigned int *acksig = (unsigned int *)&rcv_buff.data;
1541 if(rsocket->sbuffers[i]){
1542 if(rsocket->ssequence[i] == *acksig){
1543 Assert(rsocket->sbuffers[i] != NULL);
1544 free(rsocket->sbuffers[i]);
1545 rsocket->sbuffers[i] = NULL;
1546 rsocket->ssequence[i] = 0;
1551 //remove that packet from the send buffer
1552 rsocket->last_packet_received = psnet_get_time();
1556 if(rcv_buff.type == RNT_DATA_COMP){
1558 //Decompress it. Put it back in the buffer. Process it as RNT_DATA
1559 rcv_buff.type = RNT_DATA;
1561 if(rcv_buff.type == RNT_DATA){
1562 //If the data is out of order by >= MAXNETBUFFERS-1 ignore that packet for now
1564 seqdelta = rcv_buff.seq - rsocket->oursequence;
1565 if(seqdelta<0) seqdelta = seqdelta*-1;
1566 if(seqdelta>=MAXNETBUFFERS - 1){
1567 ml_printf("Received reliable packet out of order!\n");
1568 //It's out of order, so we won't ack it, which will mean we will get it again soon.
1571 //else move data into the proper buffer position
1574 if(rsocket->oursequence < (0xffff - (MAXNETBUFFERS-1))){
1575 if (rsocket->oursequence > rcv_buff.seq){
1579 //Sequence is high, so prepare for wrap around
1580 if( ((unsigned short)(rcv_buff.seq + rsocket->oursequence)) > (MAXNETBUFFERS-1)){
1585 for(i=0; i<MAXNETBUFFERS; i++){
1586 if( (NULL != rsocket->rbuffers[i]) && (rsocket->rsequence[i] == rcv_buff.seq)){
1587 //Received duplicate packet!
1592 for(i=0; i<MAXNETBUFFERS; i++){
1593 if(NULL == rsocket->rbuffers[i]){
1594 if(rcv_buff.data_len>max_len){
1595 rsocket->recv_len[i] = rcv_buff.data_len;
1597 rsocket->recv_len[i] = rcv_buff.data_len;
1599 rsocket->rbuffers[i] = (reliable_net_rcvbuffer *)malloc(sizeof(reliable_net_rcvbuffer));
1600 memcpy(rsocket->rbuffers[i]->buffer,rcv_buff.data,rsocket->recv_len[i]);
1601 rsocket->rsequence[i] = rcv_buff.seq;
1606 psnet_rel_send_ack(&rsocket->addr,rcv_buff.seq,link_type,rcv_buff.send_time);
1610 } while((ipx_has_data>0) || (udp_has_data>0));
1612 // Go through each reliable socket that is connected and do any needed work.
1613 for(j=0; j<MAXRELIABLESOCKETS; j++){
1614 rsocket=&Reliable_sockets[j];
1616 if(Serverconn == 0xffffffff){
1617 if(rsocket->status==RNF_LIMBO){
1618 if(fl_abs((psnet_get_time() - rsocket->last_packet_received))>Nettimeout){
1619 ml_printf("Reliable (but in limbo) socket (%d) timed out in nw_WorkReliable().\n",j);
1620 memset(rsocket,0,sizeof(reliable_socket));
1621 rsocket->status = RNF_UNUSED;//Won't work if this is an outgoing connection.
1625 if((rsocket->status == RNF_LIMBO) && (fl_abs((psnet_get_time() - First_sent_iamhere)) > Nettimeout)){
1626 rsocket->status = RNF_BROKEN;
1627 ml_printf("Reliable socket (%d) timed out in nw_WorkReliable().\n",j);
1631 if(rsocket->status == RNF_CONNECTED){
1632 float retry_packet_time;
1633 if((rsocket->mean_ping==0) || (rsocket->mean_ping > (NETRETRYTIME*4))){
1634 retry_packet_time = NETRETRYTIME;
1636 if(rsocket->mean_ping<MIN_NET_RETRYTIME) {
1637 retry_packet_time = (float)MIN_NET_RETRYTIME;
1639 retry_packet_time = ((float)(float)rsocket->mean_ping * (float)1.25);
1642 //Iterate through send buffers.
1643 for(i=0;i<MAXNETBUFFERS;i++){
1645 if((rsocket->sbuffers[i]) && (fl_abs((psnet_get_time() - rsocket->timesent[i])) >= retry_packet_time)) {
1646 reliable_header send_header;
1647 send_header.send_time = psnet_get_time();
1648 send_header.seq = rsocket->ssequence[i];
1649 memcpy(send_header.data,rsocket->sbuffers[i]->buffer,rsocket->send_len[i]);
1650 send_header.data_len = (ushort)rsocket->send_len[i];
1651 send_header.type = RNT_DATA;
1652 if(rsocket->connection_type == NET_TCP){
1653 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1654 } else if(rsocket->connection_type == NET_IPX){
1655 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE+rsocket->send_len[i],0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1657 if((rcode == SOCKET_ERROR) && (WSAEWOULDBLOCK == WSAGetLastError())){
1658 //The packet didn't get sent, flag it to try again next frame
1659 rsocket->timesent[i] = psnet_get_time()-(NETRETRYTIME*4);
1661 rsocket->last_packet_sent = psnet_get_time();
1662 rsocket->timesent[i] = psnet_get_time();
1668 if((rsocket->status == RNF_CONNECTED) && (fl_abs((psnet_get_time() - rsocket->last_packet_sent)) > NETHEARTBEATTIME)) {
1669 reliable_header send_header;
1670 send_header.send_time = psnet_get_time();
1671 send_header.seq = 0;
1672 send_header.data_len = 0;
1673 send_header.type = RNT_HEARTBEAT;
1676 if(rsocket->connection_type == NET_TCP){
1677 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1678 } else if(rsocket->connection_type == NET_IPX){
1679 rcode = SENDTO(Unreliable_socket, (char *)&send_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,&rsocket->addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1681 if((rcode != SOCKET_ERROR) && (WSAEWOULDBLOCK != WSAGetLastError())){
1682 //It must have been sent
1683 rsocket->last_packet_sent = psnet_get_time();
1687 if((rsocket->status == RNF_CONNECTED) && (fl_abs((psnet_get_time() - rsocket->last_packet_received))>Nettimeout)){
1688 //This socket is hosed.....inform someone?
1689 ml_printf("Reliable Socket (%d) timed out in nw_WorkReliable().\n",j);
1690 rsocket->status = RNF_BROKEN;
1696 // get the status of a reliable socket, see RNF_* defines above
1697 int psnet_rel_get_status(PSNET_SOCKET_RELIABLE socketid)
1699 if(socketid >= MAXRELIABLESOCKETS){
1703 return Reliable_sockets[socketid].status;
1706 // function which checks the Listen_socket for possibly incoming requests to be connected.
1707 // returns 0 on error or nothing waiting. 1 if we should try to accept
1708 int psnet_rel_check_for_listen(net_addr *from_addr)
1710 SOCKADDR_IN *ip_addr; // UDP/TCP socket structure
1711 SOCKADDR_IPX *ipx_addr; // IPX socket structure
1715 for(i=1; i<MAXRELIABLESOCKETS; i++){
1716 if(Reliable_sockets[i].status == RNF_CONNECTING){
1717 Reliable_sockets[i].status = RNF_CONNECTED;
1718 //memcpy(from_addr,&reliable_sockets[i].addr,sizeof(SOCKADDR));
1719 ml_printf("New reliable connection in nw_CheckListenSocket().\n");
1721 switch ( Reliable_sockets[i].connection_type ){
1723 ipx_addr = (SOCKADDR_IPX *)&Reliable_sockets[i].addr;
1724 memset(from_addr, 0x00, sizeof(net_addr));
1725 from_addr->port = ntohs( ipx_addr->sa_socket );
1726 from_addr->type = NET_IPX;
1727 memcpy(from_addr->addr, ipx_addr->sa_nodenum, 6 );
1728 memcpy(from_addr->net_id, ipx_addr->sa_netnum, 4 );
1732 ip_addr = (SOCKADDR_IN *)&Reliable_sockets[i].addr;
1733 memset(from_addr, 0x00, sizeof(net_addr));
1734 from_addr->port = ntohs( ip_addr->sin_port );
1735 from_addr->type = NET_TCP;
1736 memcpy(from_addr->addr, &ip_addr->sin_addr.S_un.S_addr, 4);
1744 char dbg_output[50];
1745 nw_GetNumbersFromHostAddress(from_addr,dbg_output);
1746 mprintf((0,"Got address from: %s\n",dbg_output));
1751 return INVALID_SOCKET;
1754 // attacmpt to connect() to the server's tcp socket. socket parameter is simply assigned to the
1755 // Reliable_socket socket created in psnet_init
1756 void psnet_rel_connect_to_server(PSNET_SOCKET *socket, net_addr *server_addr)
1758 //Send out a RNT_REQ_CONN packet, and wait for it to be acked.
1759 SOCKADDR_IN sockaddr; // UDP/TCP socket structure
1760 SOCKADDR_IPX ipx_addr; // IPX socket structure
1761 SOCKADDR *addr; // pointer to SOCKADDR to make coding easier
1767 float time_sent_req = 0;
1768 float first_sent_req = 0;
1769 static reliable_header conn_header;
1770 static reliable_header ack_header;
1772 struct timeval timeout;
1775 *socket = INVALID_SOCKET;
1777 memset(iaddr, 0x00, 6);
1778 memcpy(iaddr, &server_addr->addr, 6);
1779 port = (ushort)(server_addr->port); // Talk to the server listen port
1781 conn_header.type = RNT_REQ_CONN;
1782 conn_header.seq = CONNECTSEQ;
1783 conn_header.data_len = 0;
1788 if((server_addr->type == NET_IPX) && (!Ipx_active)){
1791 if((server_addr->type == NET_TCP) && (!Tcp_active)){
1794 //Flush out any left overs
1795 if(Tcp_active && (Socket_type == NET_TCP)){
1797 FD_SET(Unreliable_socket, &read_fds);
1798 while(SELECT(0, &read_fds, NULL, NULL, &timeout, PSNET_TYPE_RELIABLE)){
1799 addrlen = sizeof(SOCKADDR);
1800 bytesin = RECVFROM(Unreliable_socket, (char *)&ack_header,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1802 //Int3();//See Kevin
1803 ml_printf("UDP recvfrom returned an error! -- %d\n",WSAGetLastError());
1808 FD_SET(Unreliable_socket, &read_fds);
1811 if(Ipx_active && (Socket_type == NET_IPX)){
1813 FD_SET(Unreliable_socket, &read_fds);
1814 while(SELECT(0, &read_fds, NULL, NULL, &timeout, PSNET_TYPE_RELIABLE))
1816 addrlen = sizeof(SOCKADDR);
1817 bytesin = RECVFROM(Unreliable_socket, (char *)&ack_header,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1820 //Int3();//See Kevin
1821 ml_printf("IPX recvfrom returned an error! -- %d\n",WSAGetLastError());
1825 FD_SET(Unreliable_socket, &read_fds);
1828 memset(&ack_header,0,sizeof(reliable_header));
1830 SOCKET typeless_sock;
1831 net_addr d3_rcv_addr;
1832 memset(&d3_rcv_addr,0,sizeof(net_addr));
1834 switch ( server_addr->type ){
1836 ipx_addr.sa_family = AF_IPX;
1837 memcpy(ipx_addr.sa_nodenum, iaddr, 6);
1838 memcpy(ipx_addr.sa_netnum, server_addr->net_id, 4);
1839 ipx_addr.sa_socket = htons(port);
1840 addr = (SOCKADDR *)&ipx_addr;
1841 name_length = sizeof(ipx_addr);
1842 if( SOCKET_ERROR == SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE) ){
1843 ml_printf("Unable to send IPX packet in nw_ConnectToServer()! -- %d\n",WSAGetLastError());
1846 typeless_sock = Unreliable_socket;
1847 memcpy(d3_rcv_addr.addr,ipx_addr.sa_nodenum, 6);
1848 memcpy(d3_rcv_addr.net_id,ipx_addr.sa_netnum, 4);
1849 d3_rcv_addr.type = NET_IPX;
1852 sockaddr.sin_family = AF_INET;
1853 memcpy(&sockaddr.sin_addr.s_addr, iaddr, 4);
1854 sockaddr.sin_port = htons(port);
1855 addr = (SOCKADDR *)&sockaddr;
1856 name_length = sizeof(sockaddr);
1857 if( SOCKET_ERROR == SENDTO(Unreliable_socket, (char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE) ){
1858 ml_printf("Unable to send UDP packet in nw_ConnectToServer()! -- %d\n",WSAGetLastError());
1861 memcpy(d3_rcv_addr.addr, &sockaddr.sin_addr.s_addr, 4);
1862 d3_rcv_addr.port = sockaddr.sin_port;
1863 d3_rcv_addr.type = NET_TCP;
1864 typeless_sock = Unreliable_socket;
1868 ml_printf("Network","Unknown protocol type in nw_ConnectToServer()!\n");
1874 first_sent_req = psnet_get_time();
1875 time_sent_req = psnet_get_time();
1877 //Wait until we get a response from the server or we timeout
1880 PSNET_TOP_LAYER_PROCESS();
1883 FD_SET(typeless_sock, &read_fds);
1884 if(SELECT(0, &read_fds, NULL,NULL,&timeout, PSNET_TYPE_RELIABLE)){
1885 ml_string("selected() in psnet_rel_connect_to_server()");
1887 addrlen = sizeof(SOCKADDR);
1888 bytesin = RECVFROM(typeless_sock,(char *)&ack_header,sizeof(reliable_header),0,(SOCKADDR *)&rcv_addr,&addrlen, PSNET_TYPE_RELIABLE);
1890 ml_printf("recvfrom returned an error! -- %d\n",WSAGetLastError());
1895 ml_string("received data after select in psnet_rel_connect_to_server()");
1897 ml_string("about to check ack_header.type");
1898 if(ack_header.type == RNT_ACK){
1899 int *acknum = (int *)&ack_header.data;
1900 if(*acknum == CONNECTSEQ){
1901 for(i=1; i<MAXRELIABLESOCKETS; i++){
1902 if(Reliable_sockets[i].status==RNF_UNUSED){
1903 //Add the new connection here.
1904 memset(&Reliable_sockets[i],0,sizeof(reliable_socket));
1905 Reliable_sockets[i].connection_type = (ubyte)server_addr->type;
1906 memcpy(&Reliable_sockets[i].net_addr,&d3_rcv_addr,sizeof(net_addr));
1907 Reliable_sockets[i].last_packet_received = psnet_get_time();
1908 memcpy(&Reliable_sockets[i].addr,&rcv_addr,sizeof(SOCKADDR));
1909 Reliable_sockets[i].status = RNF_LIMBO;
1911 ml_printf("Succesfully connected to server in nw_ConnectToServer().\n");
1912 //Now send I_AM_HERE packet
1913 conn_header.type = RNT_I_AM_HERE;
1914 conn_header.seq = (ushort)(~CONNECTSEQ);
1915 conn_header.data_len = 0;
1917 First_sent_iamhere = psnet_get_time();
1918 Last_sent_iamhere = psnet_get_time();
1919 int rcode = SENDTO(typeless_sock,(char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1920 if(rcode == SOCKET_ERROR){
1921 *socket = INVALID_SOCKET;
1922 Reliable_sockets[i].status = RNF_UNUSED;
1923 memset(&Reliable_sockets[i],0,sizeof(reliable_socket));
1924 ml_printf("Unable to send packet in nw_ConnectToServer()\n");
1927 Reliable_sockets[i].last_packet_sent = psnet_get_time();
1929 f = psnet_get_time();
1930 while((fl_abs((psnet_get_time() - f))<2) && (Reliable_sockets[i].status != RNF_CONNECTING)){
1937 ml_printf("Out of reliable socket space in nw_ConnectToServer().\n");
1939 } else ml_printf("Received out of sequence ACK in nw_ConnectToServer().\n");
1940 } else ml_printf("Received something that isn't an ACK in nw_ConnectToServer().\n");
1941 } else ml_printf("Received 0 bytes from recvfrom() in nw_ConnectToServer().\n");
1944 if((psnet_get_time()-time_sent_req)>2)
1946 ml_printf("Resending connect request.\n");
1947 int ret = SENDTO(typeless_sock,(char *)&conn_header,RELIABLE_PACKET_HEADER_ONLY_SIZE,0,addr,sizeof(SOCKADDR), PSNET_TYPE_RELIABLE);
1948 if(ret != SOCKET_ERROR){
1949 time_sent_req = psnet_get_time();
1951 ml_printf("Error sending connection request! -- %d\n",WSAGetLastError() );
1956 } while(fl_abs((psnet_get_time() - first_sent_req)) < RELIABLE_CONNECT_TIME);
1959 // returns the ip address of this computer
1961 int psnet_rel_get_ip()
1965 SOCKADDR_IN local_address;
1968 // Get the local host name
1969 memset(&local_address, 0, sizeof(local_address));
1970 ret = gethostname(local, 255 );
1971 if (ret != SOCKET_ERROR ){
1972 // Resolve host name for local address
1973 hostent = gethostbyname((LPSTR)local);
1975 local_address.sin_addr.s_addr = *((u_long FAR *)(hostent->h_addr));
1978 ml_string("SOCKET_ERROR in psnet_rel_get_ip()!");
1980 ml_printf(%s:%d\n", inet_ntoa(rcvaddr->sin_addr), htons(rcvaddr->sin_port)
1981 return local_address.sin_addr.s_addr;
1985 // returns the ip address of this computer
1988 SOCKADDR_IN local_address;
1990 if(Psnet_connection == NETWORK_CONNECTION_DIALUP){
1991 local_address.sin_addr.s_addr = psnet_ras_status();
1992 if(local_address.sin_addr.s_addr == INADDR_NONE){
1993 local_address.sin_addr.s_addr = INADDR_ANY;
1996 // Init local address to zero
1997 local_address.sin_addr.s_addr = INADDR_ANY;
2000 ml_printf("psnet_get_ip() reports IP : %s\n", inet_ntoa(local_address.sin_addr));
2002 return local_address.sin_addr.s_addr;
2005 // initialize reliable sockets
2006 int psnet_init_rel_tcp(int port, int should_listen)
2009 SOCKADDR_IN sockaddr;
2011 sockaddr.sin_port = htons((ushort)port);
2012 sockaddr.sin_family = AF_INET;
2014 ml_printf("Setting up reliable sockets.\n");
2016 my_ip = psnet_get_ip();
2018 memcpy(&sockaddr.sin_addr.s_addr, &my_ip, sizeof(uint));
2020 Reliable_UDP_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP );
2021 if(INVALID_SOCKET == Reliable_UDP_socket){
2022 ml_printf("Unable to create reliable UDP socket -- %d\n", WSAGetLastError() );
2025 } else if(bind(Reliable_UDP_socket,(SOCKADDR *)&sockaddr,sizeof(SOCKADDR))!=0){
2026 ml_printf("Unable to bind reliable socket -- %d\n", WSAGetLastError() );
2031 // make any reliable sockets which we create that aren't listening non-blocking sockets
2036 error = ioctlsocket( Reliable_UDP_socket, FIONBIO, &arg );
2037 if ( error == SOCKET_ERROR ) {
2038 ml_printf("Unable to make reliable UDP socket non-blocking -- %d\n", WSAGetLastError() );
2048 // initialize reliable sockets
2049 int psnet_init_rel_ipx(int port, int should_listen)
2052 SOCKADDR_IPX ipx_addr;
2054 memset(&ipx_addr, 0, sizeof(SOCKADDR_IPX));
2055 ipx_addr.sa_family = AF_IPX;
2056 ipx_addr.sa_socket = htons((ushort)port);
2058 Reliable_IPX_socket = socket(AF_IPX, SOCK_DGRAM, NSPROTO_IPX);
2059 if(INVALID_SOCKET == Reliable_IPX_socket){
2060 ml_printf("Unable to create reliable IPX socket -- %d\n", WSAGetLastError() );
2063 } else if(bind(Reliable_IPX_socket,(SOCKADDR *)&ipx_addr,sizeof(SOCKADDR))!=0){
2064 ml_printf("Unable to bind reliable IPX socket -- %d\n", WSAGetLastError() );
2069 // make any reliable sockets which we create that aren't listening non-blocking sockets
2074 error = ioctlsocket( Reliable_IPX_socket, FIONBIO, &arg );
2075 if ( error == SOCKET_ERROR ) {
2076 ml_printf("Unable to make reliable IPX socket non-blocking -- %d\n", WSAGetLastError() );
2086 void psnet_rel_close()
2089 PSNET_SOCKET_RELIABLE sock;
2092 for(idx=0; idx<MAXRELIABLESOCKETS; idx++){
2093 if(Reliable_sockets[idx].status != RNF_UNUSED){
2095 psnet_rel_close_socket(&sock);
2100 // ------------------------------------------------------------------------------------------------------
2101 // PACKET BUFFERING FUNCTIONS
2104 // initialize the buffering system
2105 void psnet_buffer_init(network_packet_buffer_list *l)
2109 // blast the buffer clean
2110 memset(l->psnet_buffers, 0, sizeof(network_packet_buffer) * MAX_PACKET_BUFFERS);
2112 // set all buffer sequence #'s to -1
2113 for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
2114 l->psnet_buffers[idx].sequence_number = -1;
2117 // initialize the sequence #
2118 l->psnet_seq_number = 0;
2119 l->psnet_lowest_id = -1;
2120 l->psnet_highest_id = -1;
2123 // buffer a packet (maintain order!)
2124 void psnet_buffer_packet(network_packet_buffer_list *l, ubyte *data, int length, net_addr *from)
2129 // find the first empty packet
2130 for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
2131 if(l->psnet_buffers[idx].sequence_number == -1){
2137 // if we didn't find the buffer, report an overrun
2139 ml_printf("WARNING - Buffer overrun in psnet\n");
2142 memcpy(l->psnet_buffers[idx].data, data, length);
2143 l->psnet_buffers[idx].len = length;
2144 memcpy(&l->psnet_buffers[idx].from_addr, from, sizeof(net_addr));
2145 l->psnet_buffers[idx].sequence_number = l->psnet_seq_number;
2147 // keep track of the highest id#
2148 l->psnet_highest_id = l->psnet_seq_number++;
2150 // set the lowest id# for the first time
2151 if(l->psnet_lowest_id == -1){
2152 l->psnet_lowest_id = l->psnet_highest_id;
2157 // get the index of the next packet in order!
2158 int psnet_buffer_get_next(network_packet_buffer_list *l, ubyte *data, int *length, net_addr *from)
2163 // if there are no buffers, do nothing
2164 if((l->psnet_lowest_id == -1) || (l->psnet_lowest_id > l->psnet_highest_id)){
2168 // search until we find the lowest packet index id#
2169 for(idx=0;idx<MAX_PACKET_BUFFERS;idx++){
2170 // if we found the buffer
2171 if(l->psnet_buffers[idx].sequence_number == l->psnet_lowest_id){
2177 // at this point, we should _always_ have found the buffer
2180 // copy out the buffer data
2181 memcpy(data, l->psnet_buffers[idx].data, l->psnet_buffers[idx].len);
2182 *length = l->psnet_buffers[idx].len;
2183 memcpy(from, &l->psnet_buffers[idx].from_addr, sizeof(net_addr));
2185 // now we need to cleanup the packet list
2187 // mark the buffer as free
2188 l->psnet_buffers[idx].sequence_number = -1;
2189 l->psnet_lowest_id++;
2194 // -------------------------------------------------------------------------------------------------------
2195 // PSNET 2 FORWARD DEFINITIONS
2198 // if the string is a legally formatted ip string
2199 int psnet_is_valid_numeric_ip(char *ip)
2203 int val1,val2,val3,val4;
2205 // get the first ip value
2207 token = strtok(copy,".");
2211 // get the value of the token
2213 if((val1 < 0) || (val1 > 255)){
2219 token = strtok(NULL,".");
2223 // get the value of the token
2225 if((val2 < 0) || (val2 > 255)){
2231 token = strtok(NULL,".");
2235 // get the value of the token
2237 if((val3 < 0) || (val3 > 255)){
2243 token = strtok(NULL,"");
2247 // get the value of the token
2249 if((val4 < 0) || (val4 > 255)){
2254 // make sure he hasn't entered all 0's
2255 if((val1 == 0) && (val2 == 0) && (val3 == 0) && (val4 == 0)){
2263 // function called from high level FreeSpace code to determine the status of the networking
2264 // code returns one of a handful of macros
2266 DWORD (__stdcall *pRasEnumConnections)(LPRASCONN lprasconn, LPDWORD lpcb, LPDWORD lpcConnections) = NULL;
2267 DWORD (__stdcall *pRasGetConnectStatus)(HRASCONN hrasconn, LPRASCONNSTATUS lprasconnstatus ) = NULL;
2268 DWORD (__stdcall *pRasGetProjectionInfo)(HRASCONN hrasconn, RASPROJECTION rasprojection, LPVOID lpprojection, LPDWORD lpcb ) = NULL;
2270 // functions to get the status of a RAS connection
2271 unsigned int psnet_ras_status()
2274 unsigned long size, num_connections, i;
2275 RASCONN rasbuffer[25];
2276 HINSTANCE ras_handle;
2277 unsigned long rasip=0;
2278 RASPPPIP projection;
2279 // int Ras_connected;
2283 // first, call a LoadLibrary to load the RAS api
2284 ras_handle = LoadLibrary( "rasapi32.dll" );
2285 if ( ras_handle == NULL ) {
2289 pRasEnumConnections = (DWORD (__stdcall *)(LPRASCONN, LPDWORD, LPDWORD))GetProcAddress(ras_handle, "RasEnumConnectionsA");
2290 if (!pRasEnumConnections) {
2291 FreeLibrary( ras_handle );
2294 pRasGetConnectStatus = (DWORD (__stdcall *)(HRASCONN, LPRASCONNSTATUS))GetProcAddress(ras_handle, "RasGetConnectStatusA");
2295 if (!pRasGetConnectStatus) {
2296 FreeLibrary( ras_handle );
2299 pRasGetProjectionInfo = (DWORD (__stdcall *)(HRASCONN, RASPROJECTION, LPVOID, LPDWORD))GetProcAddress(ras_handle, "RasGetProjectionInfoA");
2300 if (!pRasGetProjectionInfo) {
2301 FreeLibrary( ras_handle );
2305 size = sizeof(rasbuffer);
2306 rasbuffer[0].dwSize = sizeof(RASCONN);
2308 rval = pRasEnumConnections( rasbuffer, &size, &num_connections );
2310 FreeLibrary( ras_handle );
2314 // JAS: My computer gets to this point, but I have no RAS connections,
2316 if ( num_connections < 1 ) {
2317 ml_string("Found no RAS connections");
2318 FreeLibrary( ras_handle );
2322 ml_printf("Found %d connections", num_connections);
2324 for (i = 0; i < num_connections; i++ ) {
2325 RASCONNSTATUS status;
2328 ml_printf("Connection %d:", i);
2329 ml_printf("Entry Name: %s", rasbuffer[i].szEntryName);
2330 ml_printf("Device Type: %s", rasbuffer[i].szDeviceType);
2331 ml_printf("Device Name: %s", rasbuffer[i].szDeviceName);
2333 // get the connection status
2334 status.dwSize = sizeof(RASCONNSTATUS);
2335 rval = pRasGetConnectStatus(rasbuffer[i].hrasconn, &status);
2337 FreeLibrary( ras_handle );
2341 // get the projection informatiom
2342 size = sizeof(projection);
2343 projection.dwSize = size;
2344 rval = pRasGetProjectionInfo(rasbuffer[i].hrasconn, RASP_PppIp, &projection, &size );
2346 FreeLibrary( ras_handle );
2350 ml_printf("IP Address: %s", projection.szIpAddress);
2355 FreeLibrary( ras_handle );
2356 rasip = inet_addr(projection.szIpAddress);
2357 if(rasip==INADDR_NONE){
2361 //The ip of the RAS connection
2365 // functions to get the status of a RAS connection
2367 void psnet_ras_status()
2370 unsigned long size, num_connections, i;
2371 RASCONN rasbuffer[25];
2372 HINSTANCE ras_handle;
2376 // first, call a LoadLibrary to load the RAS api
2377 ras_handle = LoadLibrary( NOX("rasapi32.dll") );
2378 if ( ras_handle == NULL ) {
2382 pRasEnumConnections = (DWORD (__stdcall *)(LPRASCONN, LPDWORD, LPDWORD))GetProcAddress(ras_handle, NOX("RasEnumConnectionsA"));
2383 if (!pRasEnumConnections) {
2384 FreeLibrary( ras_handle );
2387 pRasGetConnectStatus = (DWORD (__stdcall *)(HRASCONN, LPRASCONNSTATUS))GetProcAddress(ras_handle, NOX("RasGetConnectStatusA"));
2388 if (!pRasGetConnectStatus) {
2389 FreeLibrary( ras_handle );
2392 pRasGetProjectionInfo = (DWORD (__stdcall *)(HRASCONN, RASPROJECTION, LPVOID, LPDWORD))GetProcAddress(ras_handle, NOX("RasGetProjectionInfoA"));
2393 if (!pRasGetProjectionInfo) {
2394 FreeLibrary( ras_handle );
2398 size = sizeof(rasbuffer);
2399 rasbuffer[0].dwSize = sizeof(RASCONN);
2401 rval = pRasEnumConnections( rasbuffer, &size, &num_connections );
2403 FreeLibrary( ras_handle );
2407 // JAS: My computer gets to this point, but I have no RAS connections,
2409 if ( num_connections < 1 ) {
2410 ml_printf("Found no connections\n" );
2411 FreeLibrary( ras_handle );
2415 ml_printf("Found %d connections\n", num_connections);
2417 for (i = 0; i < num_connections; i++ ) {
2418 RASCONNSTATUS status;
2419 RASPPPIP projection;
2422 ml_printf("Connection %d:\n", i);
2423 ml_printf("Entry Name: %s\n", rasbuffer[i].szEntryName);
2424 ml_printf("Device Type: %s\n", rasbuffer[i].szDeviceType);
2425 ml_printf("Device Name: %s\n", 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 ml_printf("\tStatus: %s\n", (status.rasconnstate==RASCS_Connected)?"Connected":"Not Connected");
2437 // get the projection informatiom
2438 size = sizeof(projection);
2439 projection.dwSize = size;
2440 rval = pRasGetProjectionInfo(rasbuffer[i].hrasconn, RASP_PppIp, &projection, &size );
2442 FreeLibrary( ras_handle );
2446 ml_printf("IP Address: %s", projection.szIpAddress));
2451 FreeLibrary( ras_handle );
2455 // set some options on a socket
2456 void psnet_socket_options( SOCKET sock )
2459 int ret, cursize, cursizesize, bufsize;
2461 // Set the mode of the socket to allow broadcasting. We need to be able to broadcast
2462 // when a game is searched for in IPX mode.
2464 if(setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (LPSTR)&broadcast, sizeof(broadcast) )){
2471 // setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (LPSTR)&broadcast, sizeof(broadcast) );
2473 // try and increase the size of my receive buffer
2474 bufsize = MAX_RECEIVE_BUFSIZE;
2476 // set the current size of the receive buffer
2477 cursizesize = sizeof(int);
2478 getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (LPSTR)&cursize, &cursizesize);
2479 // for ( trysize = bufsize; trysize >= cursize; trysize >>= 1 ) {
2480 ret = setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (LPSTR)&bufsize, sizeof(bufsize));
2481 if ( ret == SOCKET_ERROR ) {
2484 wserr = WSAGetLastError();
2485 // if ( (wserr == WSAENOPROTOOPT) || (wserr == WSAEINVAL) )
2489 getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (LPSTR)&cursize, &cursizesize);
2490 ml_printf("Receive buffer set to %d\n", cursize);
2492 // set the current size of the send buffer
2493 cursizesize = sizeof(int);
2494 getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (LPSTR)&cursize, &cursizesize);
2495 // for ( trysize = bufsize; trysize >= cursize; trysize >>= 1 ) {
2496 ret = setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (LPSTR)&bufsize, sizeof(bufsize));
2497 if ( ret == SOCKET_ERROR ) {
2500 wserr = WSAGetLastError();
2501 // if ( (wserr == WSAENOPROTOOPT) || (wserr == WSAEINVAL) ){
2505 getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (LPSTR)&cursize, &cursizesize);
2506 ml_printf("Send buffer set to %d\n", cursize);
2509 // initialize ipx socket
2510 int psnet_init_ipx()
2512 SOCKADDR_IPX sockaddr;
2514 IPX_socket = INVALID_SOCKET;
2516 IPX_socket = socket( AF_IPX, SOCK_DGRAM, NSPROTO_IPX );
2517 if ( IPX_socket == INVALID_SOCKET ) {
2518 Ipx_failure_code = WSAGetLastError();
2519 ml_printf("Error on IPX startup %d\n", Ipx_failure_code);
2524 memset(&sockaddr,0,sizeof(SOCKADDR_IPX));
2525 sockaddr.sa_family = AF_IPX;
2526 sockaddr.sa_socket = htons( Psnet_default_port );
2527 if ( bind(IPX_socket, (SOCKADDR*)&sockaddr, sizeof (SOCKADDR_IPX)) == SOCKET_ERROR) {
2528 Ipx_failure_code = WSAGetLastError();
2529 ml_printf("Couldn't bind IPX socket (%d)! Invalidating IPX\n", Ipx_failure_code );
2533 // set socket options
2534 psnet_socket_options( IPX_socket );
2535 Ipx_can_broadcast = Can_broadcast;
2541 // initialize tcp socket
2542 int psnet_init_tcp()
2544 SOCKADDR_IN sockaddr;
2546 TCP_socket = INVALID_SOCKET;
2548 TCP_socket = socket( AF_INET, SOCK_DGRAM, 0 );
2549 if ( TCP_socket == INVALID_SOCKET ) {
2550 Tcp_failure_code = WSAGetLastError();
2551 ml_printf("Error on TCP startup %d\n", Tcp_failure_code);
2556 memset(&sockaddr,0,sizeof(SOCKADDR_IN));
2557 sockaddr.sin_family = AF_INET;
2558 sockaddr.sin_addr.s_addr = psnet_get_ip();
2559 sockaddr.sin_port = htons( Psnet_default_port );
2560 if ( bind(TCP_socket, (SOCKADDR*)&sockaddr, sizeof (sockaddr)) == SOCKET_ERROR) {
2561 Tcp_failure_code = WSAGetLastError();
2562 ml_printf("Couldn't bind TCP socket (%d)! Invalidating TCP\n", Tcp_failure_code );
2566 // set socket options
2567 psnet_socket_options( TCP_socket );
2568 Tcp_can_broadcast = Can_broadcast;
2574 // get time in seconds
2575 float psnet_get_time()
2577 return (float)timer_get_milliseconds() / 1000.0f;
2580 // mark a socket as having received data
2581 void psnet_mark_received(PSNET_SOCKET_RELIABLE socket)
2584 if((socket == 0xffffffff) || (socket >= MAXRELIABLESOCKETS)){
2589 Reliable_sockets[socket].last_packet_received = psnet_get_time();
2592 #endif // #ifdef PSNET2