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fs2open.github.com/code/network/psnet.h
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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
/*
* $Logfile: /Freespace2/code/Network/PsNet.h $
* $Revision: 2.4 $
* $Date: 2004-08-11 05:06:29 $
* $Author: Kazan $
*
* Header file for the application level network-interface.
*
* $Log: not supported by cvs2svn $
* Revision 2.3 2004/03/09 00:02:16 Kazan
* more fs2netd stuff
*
* Revision 2.2 2003/11/14 22:47:37 Kazan
* *WARNING* Multi Compatability with previous versions now in question *WARNING*
* [But that's ok, i incremented the multi version number the other day so that it will say "you don't have a compatable version"]
*
* I upped the MAX_PACKET_SIZE from 512 to 4096 -- try and bust multi with more than ?130? ships now :D
*
* Revision 2.1 2002/08/01 01:41:08 penguin
* The big include file move
*
* Revision 2.0 2002/06/03 04:02:27 penguin
* Warpcore CVS sync
*
* Revision 1.1 2002/05/02 18:03:11 mharris
* Initial checkin - converted filenames and includes to lower case
*
*
* 5 11/19/98 4:19p Dave
* Put IPX sockets back in psnet. Consolidated all multiplayer config
* files into one.
*
* 4 11/19/98 8:04a Dave
* Full support for D3-style reliable sockets. Revamped packet lag/loss
* system, made it receiver side and at the lowest possible level.
*
* 3 11/17/98 11:12a Dave
* Removed player identification by address. Now assign explicit id #'s.
*
* 2 10/07/98 10:53a Dave
* Initial checkin.
*
* 1 10/07/98 10:50a Dave
*
* 41 10/02/98 3:22p Allender
* fix up the -connect option and fix the -port option
*
* 40 9/14/98 11:28a Allender
* support for server bashing of address when received from client. Added
* a cmdline.cfg file to process command line arguments from a file
*
* 39 8/07/98 10:40a Allender
* new command line flags for starting netgames. Only starting currently
* works, and PXO isn't implemented yet
*
* 38 6/30/98 2:17p Dave
* Revised object update system. Removed updates for all weapons. Put
* button info back into control info packet.
*
* 37 6/04/98 11:04a Allender
* object update level stuff. Don't reset to high when becoming an
* observer of any type. default to low when guy is a dialup customer
*
* 36 5/22/98 10:54a Allender
* new dialog information for networking to tell user if connection type
* doesn't match the setup specified type
*
* 35 5/21/98 3:31p Allender
* more RAS stuff -- fix possible problem when unable to read data on
* reliable socket
*
* 34 5/18/98 4:10p Allender
* ditch any reference to IPX initialziation. put in (butt comment out)
* the RAS code
*
* 33 5/01/98 3:15a Dave
* Tweaked object update system. Put in new packet buffering system.
*
* 32 4/04/98 4:22p Dave
* First rev of UDP reliable sockets is done. Seems to work well if not
* overly burdened.
*
* 31 4/03/98 1:03a Dave
* First pass at unreliable guaranteed delivery packets.
*
* 30 3/11/98 11:42p Allender
* more ingame join stuff. Fix to networking code to possibly
* reinitialize reliable socket when entering join screen
*
* 29 2/05/98 11:44a Allender
* enhcanced network statistic collection. Made callback in debug console
* to do networking if player is in the console
*
* 28 2/04/98 6:35p Dave
* Changed psnet to use raw data with no headers. Started putting in
* support for master tracker security measures.
*
* 27 1/11/98 10:03p Allender
* removed <winsock.h> from headers which included it. Made psnet_socket
* type which is defined just as SOCKET type is.
*
* 26 12/16/97 6:19p Dave
* Put in primary weapon support for multiplayer weapon select.
*
* 25 12/16/97 5:24p Allender
* changed to options menu to allow FQDN's. changes to player booting
* code (due to timeout). more work still needs to be done though.
*
* 24 12/11/97 8:15p Dave
* Put in network options screen. Xed out olf protocol selection screen.
*
* 23 12/03/97 11:48a Allender
* overhaul on reliable socket code. Made reliable sockets non-blocking
* (listen socket still blocks). Made player timeouts work correctly with
* certain winsock errors on the reliable sockets
*
* 22 11/11/97 11:55a Allender
* initialize network at beginning of application. create new call to set
* which network protocol to use
*
* 21 11/04/97 3:50p Allender
* more reliable socket stuff. Removed admin port. Cleaner sequencing,
* etc.
*
* 20 11/03/97 8:25p Dave
* Got client side reliable sockets working. Got reliable/unreliable
* pakcet interleaving done.
*
* 19 11/03/97 5:09p Allender
* added reliable transport system -- still in infancy. Each netplayer
* has reliable socket to server (and server to clients).
*
* 18 10/24/97 6:22p Sandeep
* added checknet
*
* 17 9/17/97 9:09a Dave
* Observer mode work, put in standalone controls. Fixed up some stuff for
* ingame join broken by recent code checkins.
*
* 16 8/26/97 5:02p Dave
* Put in admin socket handling thread. Modified all functions to support
* this.
*
* 15 8/20/97 4:34p Dave
* Added admin socket init to psnet_init()
*
* 14 8/13/97 4:55p Dave
* Moved PSNET_FLAG_CHECKSUM bit #define into psnet.h
*
* 13 8/11/97 3:18p Dave
* Added administration client socket.
*
* 12 8/04/97 9:41p Allender
* revamped packet structure for netgames. No more magic number. psnet*
* functions can now do checksumming at it's level.
*
* 11 7/30/97 9:39a Allender
* network debug stuff -- showing net read/write stats on hud
*
* 10 6/11/97 1:38p Allender
* added basic sequencing through ship selection. Put My_addr structure
* into psnet.cpp where it should be
*
* 9 1/03/97 12:01p Lawrance
* Now getting return address and port from the network layer header.
*
* 8 1/02/97 2:07p Lawrance
* fixed problem with reading socket data
*
* 7 1/01/97 6:45p Lawrance
* added support for IPX
*
* $NoKeywords: $
*/
#include "PreProcDefines.h"
#ifndef _PSNET_H
#define _PSNET_H
// use PSNET 2
#define PSNET2
#ifdef PSNET2
#include "network/psnet2.h"
#else
// use Berkeley reliable sockets if defined - otherwise use Volition reliable sockets
#define PSNET_RELIABLE_OLD_SCHOOL
#define NET_NONE 0 // if no protocol is active or none are selected
#define NET_TCP 1
#define NET_IPX 2
#define NET_VMT 3
// kazan - I think this should raise the ships limit across the network
//#define MAX_PACKET_SIZE 4096
#define MAX_PACKET_SIZE 512
#define PSNET_FLAG_CHECKSUM (1<<0) // this packet is checksummed
#define PSNET_FLAG_RAW (1<<1) // send or receive raw data. don't do any checksumming, sequencing, etc
#define DEFAULT_GAME_PORT 7802
typedef struct net_addr {
uint type; // See NET_ defines above
ubyte net_id[4]; // used for IPX only
ubyte addr[6]; // address (first 4 used when IP, all 6 used when IPX)
short port;
} net_addr;
// define these in such a manner that a call to psnet_send_reliable is exactly the same and the new code in unobtrusive
#ifdef PSNET_RELIABLE_OLD_SCHOOL
typedef uint PSNET_SOCKET;
typedef uint PSNET_SOCKET_RELIABLE;
#undef INVALID_SOCKET
#define INVALID_SOCKET (PSNET_SOCKET)(~0)
#else
typedef net_addr* PSNET_SOCKET;
typedef net_addr* PSNET_SOCKET_RELIABLE
#undef INVALID_SOCKET
#define INVALID_SOCKET NULL
#endif
// defines for protocol overheads
#define UDP_HEADER_SIZE 34
#define TCP_HEADER_SIZE 40
#define TCP_HEADER_SIZE_COMPRESSED 6
// define values for network errors when trying to enter the ready room
#define NETWORK_ERROR_NONE 0
#define NETWORK_ERROR_NO_TYPE -1
#define NETWORK_ERROR_NO_WINSOCK -2
#define NETWORK_ERROR_NO_PROTOCOL -3
#define NETWORK_ERROR_RELIABLE -4
#define NETWORK_ERROR_CONNECT_TO_ISP -5
#define NETWORK_ERROR_LAN_AND_RAS -6
extern net_addr Psnet_my_addr; // address information of this machine
extern uint Psnet_my_ip;
extern int Psnet_my_addr_valid;
extern int Network_status;
extern int Tcp_failure_code;
extern int Ipx_failure_code;
extern int Tcp_active;
// specified their internet connnection type
#define NETWORK_CONNECTION_NONE 1
#define NETWORK_CONNECTION_DIALUP 2
#define NETWORK_CONNECTION_LAN 3
extern int Psnet_connection;
extern ushort Psnet_default_port;
#ifndef NDEBUG
extern int Psnet_bytes_read; // globally available numbers for printing on the hud
extern int Psnet_bytes_written;
extern void psnet_calc_socket_stats(); // routine to calc stats for this frame.
#endif
void ipx_ntoa(net_addr *addr, char *text); // this is a HUGE hack right now. Just the 6 byte equivalent of inet_ntoa
extern void psnet_init( int protocol, int default_port );
extern void psnet_close();
extern int psnet_use_protocol( int type );
extern void psnet_rel_close_socket( PSNET_SOCKET *sockp );
extern int psnet_rel_check();
extern int psnet_get_network_status();
extern void psnet_whoami( net_addr * my_address );
extern char* psnet_addr_to_string( char * text, net_addr * address );
extern void psnet_string_to_addr( net_addr * address, char * text );
extern int psnet_same( net_addr * a1, net_addr * a2 );
extern int psnet_send( net_addr * who_to, void * data, int len, int flags = PSNET_FLAG_RAW, int reliable_socket = 0 );
extern int psnet_get( void * data, net_addr * from_addr, int flags = PSNET_FLAG_RAW );
extern int psnet_broadcast( net_addr * who_to, void * data, int len,int flags = PSNET_FLAG_RAW );
// functions for reliable socket stuff
extern int psnet_rel_send( PSNET_SOCKET socket, ubyte *data, int length, int flags = PSNET_FLAG_RAW );
extern int psnet_rel_get( PSNET_SOCKET socket, ubyte *buffer, int max_length, int flags = PSNET_FLAG_RAW);
extern int psnet_rel_check_for_listen( net_addr *addr );
extern void psnet_rel_connect_to_server( PSNET_SOCKET *s, net_addr *server_addr );
extern void psnet_flush();
extern int psnet_is_valid_ip_string( char *ip_string, int allow_port=1 );
// initialize the buffering system
extern void psnet_buffer_init();
// buffer a packet (maintain order!)
extern void psnet_buffer_packet(ubyte *data, int length, net_addr *from);
// get the index of the next packet in order!
extern int psnet_buffer_get_next(ubyte *data, int *length, net_addr *from);
// -------------------------------------------------------------------------------------
// PSNET RELIABLE UDP STUFF
//
// initialize the psnet reliable system (return 0 on fail, 1 on success)
int psnet_reliable_init();
// shutdown the reliable system (free up buffers, etc)
void psnet_reliable_close();
// notify the reliable system of a new address at index N
void psnet_reliable_notify_new_addr(net_addr *addr,int index);
// notify the reliable system of a drop at index N
void psnet_reliable_notify_drop_addr(net_addr *addr);
// send a reliable data packet
int psnet_reliable_send(ubyte *data,int packet_size,net_addr *addr);
// process frame for all reliable stuff (call once per frame)
void psnet_reliable_process();
// determine if the passed in reliable data should be processed, and sends an ack if necessary
// return # of bytes which should be stripped off the data (reliable data header)
int psnet_reliable_should_process(net_addr *addr,ubyte *data,int packet_size);
#ifndef NDEBUG
extern void psnet_stats_init();
extern int psnet_get_stats( net_addr *addr, int *tr, int *tw );
#endif
#endif // #ifdef PSNET2
#endif
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