1544 lines
37 KiB
C
1544 lines
37 KiB
C
/*
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net_ws.c - win network interface
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Copyright (C) 2007 Uncle Mike
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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#include <winsock.h>
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#include "common.h"
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#include "netchan.h"
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#include "mathlib.h"
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//#define NET_USE_FRAGMENTS // disabled until revision of netchan will be done
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#define PORT_ANY -1
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#define MAX_LOOPBACK 4
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#define MASK_LOOPBACK (MAX_LOOPBACK - 1)
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#define MAX_ROUTEABLE_PACKET 1400
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#define SPLIT_SIZE ( MAX_ROUTEABLE_PACKET - sizeof( SPLITPACKET ))
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#define NET_MAX_FRAGMENTS 32
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#ifdef NET_USE_FRAGMENTS
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#define MAX_UDP_PACKET 4010 // 9 bytes SPLITHEADER + 4000 payload?
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#else
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#define MAX_UDP_PACKET NET_MAX_MESSAGE
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#endif
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// wsock32.dll exports
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static int (_stdcall *pWSACleanup)( void );
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static word (_stdcall *pNtohs)( word netshort );
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static int (_stdcall *pWSAGetLastError)( void );
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static int (_stdcall *pCloseSocket)( SOCKET s );
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static word (_stdcall *pHtons)( word hostshort );
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static dword (_stdcall *pInet_Addr)( const char* cp );
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static char* (_stdcall *pInet_Ntoa)( struct in_addr in );
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static SOCKET (_stdcall *pSocket)( int af, int type, int protocol );
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static struct hostent *(_stdcall *pGetHostByName)( const char* name );
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static int (_stdcall *pIoctlSocket)( SOCKET s, long cmd, dword* argp );
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static int (_stdcall *pWSAStartup)( word wVersionRequired, LPWSADATA lpWSAData );
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static int (_stdcall *pBind)( SOCKET s, const struct sockaddr* addr, int namelen );
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static int (_stdcall *pSetSockopt)( SOCKET s, int level, int optname, const char* optval, int optlen );
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static int (_stdcall *pRecvFrom)( SOCKET s, char* buf, int len, int flags, struct sockaddr* from, int* fromlen );
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static int (_stdcall *pSendTo)( SOCKET s, const char* buf, int len, int flags, const struct sockaddr* to, int tolen );
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static int (_stdcall *pSelect)( int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, const struct timeval* timeout );
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static int (_stdcall *pConnect)( SOCKET s, const struct sockaddr *name, int namelen );
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static int (_stdcall *pGetSockName)( SOCKET s, struct sockaddr *name, int *namelen );
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static int (_stdcall *pSend)( SOCKET s, const char *buf, int len, int flags );
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static int (_stdcall *pRecv)( SOCKET s, char *buf, int len, int flags );
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static int (_stdcall *pGetHostName)( char *name, int namelen );
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static dword (_stdcall *pNtohl)( dword netlong );
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static dllfunc_t winsock_funcs[] =
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{
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{ "bind", (void **) &pBind },
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{ "send", (void **) &pSend },
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{ "recv", (void **) &pRecv },
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{ "ntohs", (void **) &pNtohs },
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{ "htons", (void **) &pHtons },
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{ "ntohl", (void **) &pNtohl },
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{ "socket", (void **) &pSocket },
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{ "select", (void **) &pSelect },
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{ "sendto", (void **) &pSendTo },
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{ "connect", (void **) &pConnect },
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{ "recvfrom", (void **) &pRecvFrom },
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{ "inet_addr", (void **) &pInet_Addr },
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{ "inet_ntoa", (void **) &pInet_Ntoa },
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{ "WSAStartup", (void **) &pWSAStartup },
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{ "WSACleanup", (void **) &pWSACleanup },
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{ "setsockopt", (void **) &pSetSockopt },
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{ "ioctlsocket", (void **) &pIoctlSocket },
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{ "closesocket", (void **) &pCloseSocket },
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{ "gethostname", (void **) &pGetHostName },
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{ "getsockname", (void **) &pGetSockName },
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{ "gethostbyname", (void **) &pGetHostByName },
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{ "WSAGetLastError", (void **) &pWSAGetLastError },
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{ NULL, NULL }
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};
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dll_info_t winsock_dll = { "wsock32.dll", winsock_funcs, false };
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typedef struct
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{
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byte data[MAX_INIT_MSG];
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int datalen;
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} net_loopmsg_t;
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typedef struct
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{
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net_loopmsg_t msgs[MAX_LOOPBACK];
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int get, send;
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} net_loopback_t;
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typedef struct packetlag_s
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{
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byte *data; // Raw stream data is stored.
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int size;
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netadr_t from;
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float receivedtime;
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struct packetlag_s *next;
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struct packetlag_s *prev;
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} packetlag_t;
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// split long packets. Anything over 1460 is failing on some routers.
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typedef struct
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{
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int current_sequence;
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int split_count;
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int total_size;
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char buffer[MAX_UDP_PACKET];
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} LONGPACKET;
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// use this to pick apart the network stream, must be packed
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#pragma pack(push, 1)
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typedef struct
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{
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int net_id;
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int sequence_number;
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byte packet_id;
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} SPLITPACKET;
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#pragma pack(pop)
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typedef struct
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{
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net_loopback_t loopbacks[NS_COUNT];
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packetlag_t lagdata[NS_COUNT];
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int losscount[NS_COUNT];
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float fakelag; // cached fakelag value
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LONGPACKET split;
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int split_flags[NET_MAX_FRAGMENTS];
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long sequence_number;
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int ip_sockets[NS_COUNT];
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WSADATA winsockdata;
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qboolean initialized;
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qboolean configured;
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qboolean allow_ip;
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} net_state_t;
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static net_state_t net;
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static convar_t *net_ipname;
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static convar_t *net_hostport;
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static convar_t *net_iphostport;
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static convar_t *net_clientport;
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static convar_t *net_ipclientport;
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static convar_t *net_fakelag;
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static convar_t *net_fakeloss;
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static convar_t *net_address;
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convar_t *net_clockwindow;
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netadr_t net_local;
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/*
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====================
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NET_OpenWinSock
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load wsock32.dll
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====================
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*/
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qboolean NET_OpenWinSock( void )
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{
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// initialize the Winsock function vectors (we do this instead of statically linking
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// so we can run on Win 3.1, where there isn't necessarily Winsock)
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if( Sys_LoadLibrary( &winsock_dll ))
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return true;
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return false;
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}
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/*
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====================
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NET_FreeWinSock
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unload wsock32.dll
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====================
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*/
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void NET_FreeWinSock( void )
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{
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Sys_FreeLibrary( &winsock_dll );
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}
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/*
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====================
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NET_ErrorString
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====================
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*/
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char *NET_ErrorString( void )
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{
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int err = WSANOTINITIALISED;
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if( net.initialized )
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err = pWSAGetLastError();
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switch( err )
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{
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case WSAEINTR: return "WSAEINTR";
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case WSAEBADF: return "WSAEBADF";
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case WSAEACCES: return "WSAEACCES";
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case WSAEDISCON: return "WSAEDISCON";
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case WSAEFAULT: return "WSAEFAULT";
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case WSAEINVAL: return "WSAEINVAL";
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case WSAEMFILE: return "WSAEMFILE";
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case WSAEWOULDBLOCK: return "WSAEWOULDBLOCK";
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case WSAEINPROGRESS: return "WSAEINPROGRESS";
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case WSAEALREADY: return "WSAEALREADY";
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case WSAENOTSOCK: return "WSAENOTSOCK";
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case WSAEDESTADDRREQ: return "WSAEDESTADDRREQ";
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case WSAEMSGSIZE: return "WSAEMSGSIZE";
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case WSAEPROTOTYPE: return "WSAEPROTOTYPE";
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case WSAENOPROTOOPT: return "WSAENOPROTOOPT";
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case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT";
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case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT";
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case WSAEOPNOTSUPP: return "WSAEOPNOTSUPP";
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case WSAEPFNOSUPPORT: return "WSAEPFNOSUPPORT";
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case WSAEAFNOSUPPORT: return "WSAEAFNOSUPPORT";
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case WSAEADDRINUSE: return "WSAEADDRINUSE";
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case WSAEADDRNOTAVAIL: return "WSAEADDRNOTAVAIL";
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case WSAENETDOWN: return "WSAENETDOWN";
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case WSAENETUNREACH: return "WSAENETUNREACH";
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case WSAENETRESET: return "WSAENETRESET";
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case WSAECONNABORTED: return "WSWSAECONNABORTEDAEINTR";
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case WSAECONNRESET: return "WSAECONNRESET";
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case WSAENOBUFS: return "WSAENOBUFS";
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case WSAEISCONN: return "WSAEISCONN";
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case WSAENOTCONN: return "WSAENOTCONN";
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case WSAESHUTDOWN: return "WSAESHUTDOWN";
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case WSAETOOMANYREFS: return "WSAETOOMANYREFS";
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case WSAETIMEDOUT: return "WSAETIMEDOUT";
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case WSAECONNREFUSED: return "WSAECONNREFUSED";
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case WSAELOOP: return "WSAELOOP";
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case WSAENAMETOOLONG: return "WSAENAMETOOLONG";
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case WSAEHOSTDOWN: return "WSAEHOSTDOWN";
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case WSASYSNOTREADY: return "WSASYSNOTREADY";
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case WSAVERNOTSUPPORTED: return "WSAVERNOTSUPPORTED";
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case WSANOTINITIALISED: return "WSANOTINITIALISED";
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case WSAHOST_NOT_FOUND: return "WSAHOST_NOT_FOUND";
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case WSATRY_AGAIN: return "WSATRY_AGAIN";
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case WSANO_RECOVERY: return "WSANO_RECOVERY";
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case WSANO_DATA: return "WSANO_DATA";
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default: return "NO ERROR";
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}
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}
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/*
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====================
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NET_NetadrToSockadr
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====================
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*/
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static void NET_NetadrToSockadr( netadr_t *a, struct sockaddr *s )
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{
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memset( s, 0, sizeof( *s ));
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if( a->type == NA_BROADCAST )
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{
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((struct sockaddr_in *)s)->sin_family = AF_INET;
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((struct sockaddr_in *)s)->sin_port = a->port;
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((struct sockaddr_in *)s)->sin_addr.s_addr = INADDR_BROADCAST;
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}
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else if( a->type == NA_IP )
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{
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((struct sockaddr_in *)s)->sin_family = AF_INET;
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((struct sockaddr_in *)s)->sin_addr.s_addr = *(int *)&a->ip;
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((struct sockaddr_in *)s)->sin_port = a->port;
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}
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}
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/*
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====================
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NET_SockadrToNetAdr
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====================
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*/
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static void NET_SockadrToNetadr( struct sockaddr *s, netadr_t *a )
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{
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if( s->sa_family == AF_INET )
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{
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a->type = NA_IP;
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*(int *)&a->ip = ((struct sockaddr_in *)s)->sin_addr.s_addr;
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a->port = ((struct sockaddr_in *)s)->sin_port;
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}
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}
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/*
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=============
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NET_StringToAdr
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localhost
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idnewt
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idnewt:28000
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192.246.40.70
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192.246.40.70:28000
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=============
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*/
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static qboolean NET_StringToSockaddr( const char *s, struct sockaddr *sadr )
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{
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char *colon;
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char copy[128];
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if( !net.initialized ) return false;
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memset( sadr, 0, sizeof( *sadr ));
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((struct sockaddr_in *)sadr)->sin_family = AF_INET;
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((struct sockaddr_in *)sadr)->sin_port = 0;
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Q_strncpy( copy, s, sizeof( copy ));
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// strip off a trailing :port if present
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for( colon = copy; *colon; colon++ )
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{
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if( *colon == ':' )
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{
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*colon = 0;
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((struct sockaddr_in *)sadr)->sin_port = pHtons((short)Q_atoi( colon + 1 ));
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}
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}
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((struct sockaddr_in *)sadr)->sin_addr.s_addr = pInet_Addr( copy );
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if(((struct sockaddr_in *)sadr)->sin_addr.s_addr == INADDR_NONE )
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{
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struct hostent *h = pGetHostByName( copy );
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if( h == NULL || h->h_addr == NULL )
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return false;
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((struct sockaddr_in *)sadr)->sin_addr.s_addr = *(uint *)h->h_addr;
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}
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return true;
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}
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/*
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====================
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NET_AdrToString
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====================
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*/
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char *NET_AdrToString( const netadr_t a )
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{
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if( a.type == NA_LOOPBACK )
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return "loopback";
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return va( "%i.%i.%i.%i:%i", a.ip[0], a.ip[1], a.ip[2], a.ip[3], pNtohs( a.port ));
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}
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/*
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====================
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NET_BaseAdrToString
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====================
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*/
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char *NET_BaseAdrToString( const netadr_t a )
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{
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if( a.type == NA_LOOPBACK )
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return "loopback";
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return va( "%i.%i.%i.%i", a.ip[0], a.ip[1], a.ip[2], a.ip[3] );
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}
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/*
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===================
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NET_CompareBaseAdr
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Compares without the port
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===================
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*/
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qboolean NET_CompareBaseAdr( const netadr_t a, const netadr_t b )
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{
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if( a.type != b.type )
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return false;
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if( a.type == NA_LOOPBACK )
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return true;
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if( a.type == NA_IP )
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{
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if( !memcmp( a.ip, b.ip, 4 ))
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return true;
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}
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return false;
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}
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/*
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====================
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NET_CompareClassBAdr
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Compare local masks
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====================
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*/
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qboolean NET_CompareClassBAdr( netadr_t a, netadr_t b )
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{
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if( a.type != b.type )
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return false;
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if( a.type == NA_LOOPBACK )
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return true;
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if( a.type == NA_IP )
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{
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if( a.ip[0] == b.ip[0] && a.ip[1] == b.ip[1] )
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return true;
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}
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return false;
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}
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/*
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====================
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NET_IsReservedAdr
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Check for reserved ip's
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====================
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*/
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qboolean NET_IsReservedAdr( netadr_t a )
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{
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if( a.type == NA_LOOPBACK )
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return true;
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if( a.type == NA_IP )
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{
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if( a.ip[0] == 10 || a.ip[0] == 127 )
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return true;
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if( a.ip[0] == 172 && a.ip[1] >= 16 )
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{
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if( a.ip[1] >= 32 )
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return false;
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return true;
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}
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if( a.ip[0] == 192 && a.ip[1] >= 168 )
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return true;
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}
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return false;
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}
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/*
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====================
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NET_CompareAdr
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Compare full address
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====================
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*/
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qboolean NET_CompareAdr( const netadr_t a, const netadr_t b )
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{
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if( a.type != b.type )
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return false;
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if( a.type == NA_LOOPBACK )
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return true;
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if( a.type == NA_IP )
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{
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if(!memcmp( a.ip, b.ip, 4 ) && a.port == b.port )
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return true;
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return false;
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}
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MsgDev( D_ERROR, "NET_CompareAdr: bad address type\n" );
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return false;
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}
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/*
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====================
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NET_IsLocalAddress
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====================
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*/
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qboolean NET_IsLocalAddress( netadr_t adr )
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{
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return (adr.type == NA_LOOPBACK) ? true : false;
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}
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/*
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=============
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NET_StringToAdr
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idnewt
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192.246.40.70
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=============
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*/
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qboolean NET_StringToAdr( const char *string, netadr_t *adr )
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{
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struct sockaddr s;
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if( !Q_stricmp( string, "localhost" ))
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{
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memset( adr, 0, sizeof( netadr_t ));
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adr->type = NA_LOOPBACK;
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return true;
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}
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if( !NET_StringToSockaddr( string, &s ))
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return false;
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NET_SockadrToNetadr( &s, adr );
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return true;
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}
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/*
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=============================================================================
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LOOPBACK BUFFERS FOR LOCAL PLAYER
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=============================================================================
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*/
|
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/*
|
|
====================
|
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NET_GetLoopPacket
|
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====================
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|
*/
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static qboolean NET_GetLoopPacket( netsrc_t sock, netadr_t *from, byte *data, size_t *length )
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{
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net_loopback_t *loop;
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int i;
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if( !data || !length )
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return false;
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loop = &net.loopbacks[sock];
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|
|
|
if( loop->send - loop->get > MAX_LOOPBACK )
|
|
loop->get = loop->send - MAX_LOOPBACK;
|
|
|
|
if( loop->get >= loop->send )
|
|
return false;
|
|
i = loop->get & MASK_LOOPBACK;
|
|
loop->get++;
|
|
|
|
memcpy( data, loop->msgs[i].data, loop->msgs[i].datalen );
|
|
*length = loop->msgs[i].datalen;
|
|
|
|
memset( from, 0, sizeof( *from ));
|
|
from->type = NA_LOOPBACK;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_SendLoopPacket
|
|
====================
|
|
*/
|
|
static void NET_SendLoopPacket( netsrc_t sock, size_t length, const void *data, netadr_t to )
|
|
{
|
|
net_loopback_t *loop;
|
|
int i;
|
|
|
|
loop = &net.loopbacks[sock^1];
|
|
|
|
i = loop->send & MASK_LOOPBACK;
|
|
loop->send++;
|
|
|
|
memcpy( loop->msgs[i].data, data, length );
|
|
loop->msgs[i].datalen = length;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_ClearLoopback
|
|
====================
|
|
*/
|
|
static void NET_ClearLoopback( void )
|
|
{
|
|
net.loopbacks[0].send = net.loopbacks[0].get = 0;
|
|
net.loopbacks[1].send = net.loopbacks[1].get = 0;
|
|
}
|
|
|
|
/*
|
|
=============================================================================
|
|
|
|
LAG & LOSS SIMULATION SYSTEM (network debugging)
|
|
|
|
=============================================================================
|
|
*/
|
|
/*
|
|
==================
|
|
NET_RemoveFromPacketList
|
|
|
|
double linked list remove entry
|
|
==================
|
|
*/
|
|
static void NET_RemoveFromPacketList( packetlag_t *p )
|
|
{
|
|
p->prev->next = p->next;
|
|
p->next->prev = p->prev;
|
|
p->prev = NULL;
|
|
p->next = NULL;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_ClearLaggedList
|
|
|
|
double linked list remove queue
|
|
==================
|
|
*/
|
|
static void NET_ClearLaggedList( packetlag_t *list )
|
|
{
|
|
packetlag_t *p, *n;
|
|
|
|
p = list->next;
|
|
while( p && p != list )
|
|
{
|
|
n = p->next;
|
|
|
|
NET_RemoveFromPacketList( p );
|
|
|
|
if( p->data )
|
|
{
|
|
Mem_Free( p->data );
|
|
p->data = NULL;
|
|
}
|
|
|
|
Mem_Free( p );
|
|
p = n;
|
|
}
|
|
|
|
list->prev = list;
|
|
list->next = list;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_AddToLagged
|
|
|
|
add lagged packet to stream
|
|
==================
|
|
*/
|
|
static void NET_AddToLagged( netsrc_t sock, packetlag_t *list, packetlag_t *packet, netadr_t *from, size_t length, const void *data, float timestamp )
|
|
{
|
|
byte *pStart;
|
|
|
|
if( packet->prev || packet->next )
|
|
return;
|
|
|
|
packet->prev = list->prev;
|
|
list->prev->next = packet;
|
|
list->prev = packet;
|
|
packet->next = list;
|
|
|
|
pStart = (byte *)Z_Malloc( length );
|
|
memcpy( pStart, data, length );
|
|
packet->data = pStart;
|
|
packet->size = length;
|
|
packet->receivedtime = timestamp;
|
|
memcpy( &packet->from, from, sizeof( netadr_t ));
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_AdjustLag
|
|
|
|
adjust time to next fake lag
|
|
==================
|
|
*/
|
|
static void NET_AdjustLag( void )
|
|
{
|
|
static double lasttime = 0.0;
|
|
float diff, converge;
|
|
double dt;
|
|
|
|
dt = host.realtime - lasttime;
|
|
dt = bound( 0.0, dt, 0.1 );
|
|
lasttime = host.realtime;
|
|
|
|
if( host_developer.value || !net_fakelag->value )
|
|
{
|
|
if( net_fakelag->value != net.fakelag )
|
|
{
|
|
diff = net_fakelag->value - net.fakelag;
|
|
converge = dt * 200.0f;
|
|
if( fabs( diff ) < converge )
|
|
converge = fabs( diff );
|
|
if( diff < 0.0 )
|
|
converge = -converge;
|
|
net.fakelag += converge;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Con_Printf( "Server must enable dev-mode to activate fakelag\n" );
|
|
Cvar_SetValue( "fakelag", 0.0 );
|
|
net.fakelag = 0.0f;
|
|
}
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_LagPacket
|
|
|
|
add fake lagged packet into rececived message
|
|
==================
|
|
*/
|
|
static qboolean NET_LagPacket( qboolean newdata, netsrc_t sock, netadr_t *from, size_t *length, void *data )
|
|
{
|
|
packetlag_t *pNewPacketLag;
|
|
packetlag_t *pPacket;
|
|
int ninterval;
|
|
float curtime;
|
|
|
|
if( net.fakelag <= 0.0f )
|
|
{
|
|
NET_ClearLagData( true, true );
|
|
return newdata;
|
|
}
|
|
|
|
curtime = host.realtime;
|
|
|
|
if( newdata )
|
|
{
|
|
if( net_fakeloss->value != 0.0f )
|
|
{
|
|
if( host_developer.value )
|
|
{
|
|
net.losscount[sock]++;
|
|
if( net_fakeloss->value <= 0.0f )
|
|
{
|
|
ninterval = fabs( net_fakeloss->value );
|
|
if( ninterval < 2 ) ninterval = 2;
|
|
|
|
if(( net.losscount[sock] % ninterval ) == 0 )
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
if( COM_RandomLong( 0, 100 ) <= net_fakeloss->value )
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Cvar_SetValue( "fakeloss", 0.0 );
|
|
}
|
|
}
|
|
|
|
pNewPacketLag = (packetlag_t *)Z_Malloc( sizeof( packetlag_t ));
|
|
// queue packet to simulate fake lag
|
|
NET_AddToLagged( sock, &net.lagdata[sock], pNewPacketLag, from, *length, data, curtime );
|
|
}
|
|
|
|
pPacket = net.lagdata[sock].next;
|
|
|
|
while( pPacket != &net.lagdata[sock] )
|
|
{
|
|
if( pPacket->receivedtime <= curtime - ( net.fakelag / 1000.0 ))
|
|
break;
|
|
|
|
pPacket = pPacket->next;
|
|
}
|
|
|
|
if( pPacket == &net.lagdata[sock] )
|
|
return false;
|
|
|
|
NET_RemoveFromPacketList( pPacket );
|
|
|
|
// delivery packet from fake lag queue
|
|
memcpy( data, pPacket->data, pPacket->size );
|
|
memcpy( &net_from, &pPacket->from, sizeof( netadr_t ));
|
|
*length = pPacket->size;
|
|
|
|
if( pPacket->data )
|
|
Mem_Free( pPacket->data );
|
|
|
|
Mem_Free( pPacket );
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_GetLong
|
|
|
|
receive long packet from network
|
|
==================
|
|
*/
|
|
qboolean NET_GetLong( byte *pData, int size, int *outSize )
|
|
{
|
|
uint packet_number;
|
|
uint packet_count;
|
|
int i, sequence_number;
|
|
SPLITPACKET *pHeader = (SPLITPACKET *)pData;
|
|
uint packet_payload_size;
|
|
byte packet_id;
|
|
|
|
if( size < sizeof( SPLITPACKET ))
|
|
{
|
|
MsgDev( D_ERROR, "invalid split packet length %i\n", size );
|
|
return false;
|
|
}
|
|
|
|
sequence_number = pHeader->sequence_number;
|
|
packet_id = pHeader->packet_id;
|
|
packet_count = packet_id & 0xF;
|
|
packet_number = (uint)packet_id >> 4;
|
|
|
|
if( packet_number >= NET_MAX_FRAGMENTS || packet_count > NET_MAX_FRAGMENTS )
|
|
{
|
|
MsgDev( D_ERROR, "malformed packet number (%i/%i)\n", packet_number + 1, packet_count );
|
|
return false;
|
|
}
|
|
|
|
if( net.split.current_sequence == -1 || sequence_number != net.split.current_sequence )
|
|
{
|
|
net.split.current_sequence = pHeader->sequence_number;
|
|
net.split.split_count = packet_count;
|
|
net.split.total_size = 0;
|
|
|
|
// clear part's sequence
|
|
for( i = 0; i < NET_MAX_FRAGMENTS; i++ )
|
|
net.split_flags[i] = -1;
|
|
|
|
if( net_showpackets && net_showpackets->value == 4.0f )
|
|
Con_Printf( "<-- Split packet restart %i count %i seq\n", net.split.split_count, sequence_number );
|
|
}
|
|
|
|
packet_payload_size = size - sizeof( SPLITPACKET );
|
|
|
|
if( net.split_flags[packet_number] == sequence_number )
|
|
{
|
|
MsgDev( D_REPORT, "NET_GetLong: Ignoring duplicated split packet %i of %i ( %i bytes )\n",
|
|
packet_number + 1, packet_count, packet_payload_size );
|
|
}
|
|
else
|
|
{
|
|
if( packet_number == packet_count - 1 )
|
|
net.split.total_size = packet_payload_size + SPLIT_SIZE * ( packet_count - 1 );
|
|
|
|
net.split.split_count--;
|
|
net.split_flags[packet_number] = sequence_number;
|
|
|
|
if( net_showpackets && net_showpackets->value == 4.0f )
|
|
Con_Printf( "<-- Split packet %i of %i, %i bytes %i seq\n",
|
|
packet_number + 1, packet_count, packet_payload_size, sequence_number );
|
|
|
|
if( SPLIT_SIZE * packet_number + packet_payload_size > MAX_UDP_PACKET )
|
|
{
|
|
MsgDev( D_ERROR, "malformed packet size (%i, %i)\n", SPLIT_SIZE * packet_number, packet_payload_size );
|
|
net.split.current_sequence = -1;
|
|
|
|
return false;
|
|
}
|
|
|
|
memcpy( &net.split.buffer[SPLIT_SIZE * packet_number], pHeader + 1, packet_payload_size );
|
|
}
|
|
|
|
if( net.split.split_count > 0 )
|
|
return false;
|
|
|
|
if( packet_count > 0 )
|
|
{
|
|
for( i = 0; i < packet_count; i++ )
|
|
{
|
|
if( net.split_flags[i] != net.split.current_sequence )
|
|
{
|
|
MsgDev( D_ERROR, "split packet without all %i parts, part %i had wrong sequence %i/%i\n",
|
|
packet_count, i + 1, net.split_flags[i], net.split.current_sequence );
|
|
net.split.current_sequence = -1; // no more parts can be attached, clear it
|
|
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
net.split.current_sequence = -1;
|
|
|
|
if( net.split.total_size <= MAX_UDP_PACKET )
|
|
{
|
|
memcpy( pData, net.split.buffer, net.split.total_size );
|
|
*outSize = net.split.total_size;
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
MsgDev( D_ERROR, "split packet too large! %d bytes\n", net.split.total_size );
|
|
*outSize = 0;
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_QueuePacket
|
|
|
|
queue normal and lagged packets
|
|
==================
|
|
*/
|
|
qboolean NET_QueuePacket( netsrc_t sock, netadr_t *from, byte *data, size_t *length )
|
|
{
|
|
struct sockaddr addr;
|
|
int addr_len;
|
|
int net_socket;
|
|
byte buf[MAX_UDP_PACKET];
|
|
int ret = SOCKET_ERROR;
|
|
|
|
*length = 0;
|
|
|
|
net_socket = net.ip_sockets[sock];
|
|
|
|
if( net_socket != INVALID_SOCKET )
|
|
{
|
|
addr_len = sizeof( addr );
|
|
ret = pRecvFrom( net_socket, buf, sizeof( buf ), 0, (struct sockaddr *)&addr, &addr_len );
|
|
|
|
if( ret != SOCKET_ERROR )
|
|
{
|
|
NET_SockadrToNetadr( &addr, from );
|
|
|
|
if( ret < MAX_UDP_PACKET )
|
|
{
|
|
// Transfer data
|
|
memcpy( data, buf, ret );
|
|
*length = ret;
|
|
|
|
// check for split message
|
|
if( *(int *)data == -2 )
|
|
{
|
|
return NET_GetLong( data, ret, length );
|
|
}
|
|
|
|
// lag the packet, if needed
|
|
return NET_LagPacket( true, sock, from, length, data );
|
|
}
|
|
else
|
|
{
|
|
MsgDev( D_REPORT, "NET_QueuePacket: oversize packet from %s\n", NET_AdrToString( *from ));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int err = pWSAGetLastError();
|
|
|
|
switch( err )
|
|
{
|
|
case WSAEWOULDBLOCK:
|
|
case WSAECONNRESET:
|
|
case WSAECONNREFUSED:
|
|
case WSAEMSGSIZE:
|
|
break;
|
|
default: // let's continue even after errors
|
|
MsgDev( D_ERROR, "NET_QueuePacket: %s from %s\n", NET_ErrorString(), NET_AdrToString( *from ));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NET_LagPacket( false, sock, from, length, data );
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_GetPacket
|
|
|
|
Never called by the game logic, just the system event queing
|
|
==================
|
|
*/
|
|
qboolean NET_GetPacket( netsrc_t sock, netadr_t *from, byte *data, size_t *length )
|
|
{
|
|
if( !data || !length )
|
|
return false;
|
|
|
|
NET_AdjustLag();
|
|
|
|
if( NET_GetLoopPacket( sock, from, data, length ))
|
|
{
|
|
return NET_LagPacket( true, sock, from, length, data );
|
|
}
|
|
else
|
|
{
|
|
return NET_QueuePacket( sock, from, data, length );
|
|
}
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_SendLong
|
|
|
|
Fragment long packets, send short directly
|
|
==================
|
|
*/
|
|
int NET_SendLong( netsrc_t sock, int net_socket, const char *buf, int len, int flags, const struct sockaddr *to, int tolen )
|
|
{
|
|
#ifdef NET_USE_FRAGMENTS
|
|
// do we need to break this packet up?
|
|
if( sock == NS_SERVER && len > MAX_ROUTEABLE_PACKET )
|
|
{
|
|
char packet[MAX_ROUTEABLE_PACKET];
|
|
int total_sent, size, packet_count;
|
|
int ret, packet_number;
|
|
SPLITPACKET *pPacket;
|
|
|
|
net.sequence_number++;
|
|
if( net.sequence_number <= 0 )
|
|
net.sequence_number = 1;
|
|
|
|
pPacket = (SPLITPACKET *)packet;
|
|
pPacket->sequence_number = net.sequence_number;
|
|
pPacket->net_id = -2;
|
|
packet_number = 0;
|
|
total_sent = 0;
|
|
packet_count = (len + SPLIT_SIZE - 1) / SPLIT_SIZE;
|
|
|
|
while( len > 0 )
|
|
{
|
|
size = Q_min( SPLIT_SIZE, len );
|
|
pPacket->packet_id = (packet_number << 4) + packet_count;
|
|
memcpy( packet + sizeof( SPLITPACKET ), buf + ( packet_number * SPLIT_SIZE ), size );
|
|
|
|
if( net_showpackets && net_showpackets->value == 3.0f )
|
|
{
|
|
netadr_t adr;
|
|
|
|
memset( &adr, 0, sizeof( adr ));
|
|
NET_SockadrToNetadr((struct sockaddr *)to, &adr );
|
|
|
|
Con_Printf( "Sending split %i of %i with %i bytes and seq %i to %s\n",
|
|
packet_number + 1, packet_count, size, net.sequence_number, NET_AdrToString( adr ));
|
|
}
|
|
|
|
ret = pSendTo( net_socket, packet, size + sizeof( SPLITPACKET ), flags, to, tolen );
|
|
if( ret < 0 ) return ret; // error
|
|
|
|
if( ret >= size )
|
|
total_sent += size;
|
|
len -= size;
|
|
packet_number++;
|
|
}
|
|
|
|
return total_sent;
|
|
}
|
|
else
|
|
{
|
|
// no fragmenantion for client connection
|
|
return pSendTo( net_socket, buf, len, flags, to, tolen );
|
|
}
|
|
#else
|
|
return pSendTo( net_socket, buf, len, flags, to, tolen );
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
==================
|
|
NET_SendPacket
|
|
==================
|
|
*/
|
|
void NET_SendPacket( netsrc_t sock, size_t length, const void *data, netadr_t to )
|
|
{
|
|
int ret, err;
|
|
struct sockaddr addr;
|
|
SOCKET net_socket;
|
|
|
|
if( !net.initialized || to.type == NA_LOOPBACK )
|
|
{
|
|
NET_SendLoopPacket( sock, length, data, to );
|
|
return;
|
|
}
|
|
else if( to.type == NA_BROADCAST )
|
|
{
|
|
net_socket = net.ip_sockets[sock];
|
|
if( net_socket == INVALID_SOCKET )
|
|
return;
|
|
}
|
|
else if( to.type == NA_IP )
|
|
{
|
|
net_socket = net.ip_sockets[sock];
|
|
if( net_socket == INVALID_SOCKET )
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
Host_Error( "NET_SendPacket: bad address type %i\n", to.type );
|
|
}
|
|
|
|
NET_NetadrToSockadr( &to, &addr );
|
|
|
|
ret = NET_SendLong( sock, net_socket, data, length, 0, &addr, sizeof( addr ));
|
|
|
|
if( ret == SOCKET_ERROR )
|
|
{
|
|
err = pWSAGetLastError();
|
|
|
|
// WSAEWOULDBLOCK is silent
|
|
if( err == WSAEWOULDBLOCK )
|
|
return;
|
|
|
|
// some PPP links don't allow broadcasts
|
|
if( err == WSAEADDRNOTAVAIL && to.type == NA_BROADCAST )
|
|
return;
|
|
|
|
// let dedicated servers continue after errors
|
|
if( host.type == HOST_DEDICATED )
|
|
{
|
|
MsgDev( D_ERROR, "NET_SendPacket: %s to %s\n", NET_ErrorString(), NET_AdrToString( to ));
|
|
}
|
|
else if( err == WSAEADDRNOTAVAIL || err == WSAENOBUFS )
|
|
{
|
|
MsgDev( D_ERROR, "NET_SendPacket: %s to %s\n", NET_ErrorString(), NET_AdrToString( to ));
|
|
}
|
|
else
|
|
{
|
|
Host_Error( "NET_SendPacket: %s to %s\n", NET_ErrorString(), NET_AdrToString( to ));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_BufferToBufferCompress
|
|
|
|
generic fast compression
|
|
====================
|
|
*/
|
|
qboolean NET_BufferToBufferCompress( char *dest, uint *destLen, char *source, uint sourceLen )
|
|
{
|
|
uint uCompressedLen = 0;
|
|
byte *pbOut = NULL;
|
|
|
|
memcpy( dest, source, sourceLen );
|
|
pbOut = LZSS_Compress( source, sourceLen, &uCompressedLen );
|
|
|
|
if( pbOut && uCompressedLen > 0 && uCompressedLen <= *destLen )
|
|
{
|
|
memcpy( dest, pbOut, uCompressedLen );
|
|
*destLen = uCompressedLen;
|
|
free( pbOut );
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
if( pbOut ) free( pbOut );
|
|
memcpy( dest, source, sourceLen );
|
|
*destLen = sourceLen;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_BufferToBufferDecompress
|
|
|
|
generic fast decompression
|
|
====================
|
|
*/
|
|
qboolean NET_BufferToBufferDecompress( char *dest, uint *destLen, char *source, uint sourceLen )
|
|
{
|
|
if( LZSS_IsCompressed( source ))
|
|
{
|
|
uint uDecompressedLen = LZSS_GetActualSize( source );
|
|
|
|
if( uDecompressedLen <= *destLen )
|
|
{
|
|
*destLen = LZSS_Decompress( source, dest );
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
memcpy( dest, source, sourceLen );
|
|
*destLen = sourceLen;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_IPSocket
|
|
====================
|
|
*/
|
|
static int NET_IPSocket( const char *net_interface, int port, qboolean multicast )
|
|
{
|
|
int err, net_socket;
|
|
uint optval = 1;
|
|
struct sockaddr_in addr;
|
|
|
|
if(( net_socket = pSocket( PF_INET, SOCK_DGRAM, IPPROTO_UDP )) == SOCKET_ERROR )
|
|
{
|
|
err = pWSAGetLastError();
|
|
if( err != WSAEAFNOSUPPORT )
|
|
MsgDev( D_WARN, "NET_UDPSocket: port: %d socket: %s\n", port, NET_ErrorString( ));
|
|
return INVALID_SOCKET;
|
|
}
|
|
|
|
if( pIoctlSocket( net_socket, FIONBIO, &optval ) == SOCKET_ERROR )
|
|
{
|
|
MsgDev( D_WARN, "NET_UDPSocket: port: %d ioctl FIONBIO: %s\n", port, NET_ErrorString( ));
|
|
pCloseSocket( net_socket );
|
|
return INVALID_SOCKET;
|
|
}
|
|
|
|
// make it broadcast capable
|
|
if( pSetSockopt( net_socket, SOL_SOCKET, SO_BROADCAST, (const char *)&optval, sizeof( optval )) == SOCKET_ERROR )
|
|
{
|
|
MsgDev( D_WARN, "NET_UDPSocket: port: %d setsockopt SO_BROADCAST: %s\n", port, NET_ErrorString( ));
|
|
pCloseSocket( net_socket );
|
|
return INVALID_SOCKET;
|
|
}
|
|
|
|
if( Sys_CheckParm( "-reuse" ) || multicast )
|
|
{
|
|
if( pSetSockopt( net_socket, SOL_SOCKET, SO_REUSEADDR, (const char *)&optval, sizeof( optval )) == SOCKET_ERROR )
|
|
{
|
|
MsgDev( D_WARN, "NET_UDPSocket: port: %d setsockopt SO_REUSEADDR: %s\n", port, NET_ErrorString( ));
|
|
pCloseSocket( net_socket );
|
|
return INVALID_SOCKET;
|
|
}
|
|
}
|
|
|
|
if( Sys_CheckParm( "-tos" ))
|
|
{
|
|
optval = 16;
|
|
Con_Printf( "Enabling LOWDELAY TOS option\n" );
|
|
|
|
if( pSetSockopt( net_socket, IPPROTO_IP, IP_TOS, (const char *)&optval, sizeof( optval )) == SOCKET_ERROR )
|
|
{
|
|
err = pWSAGetLastError();
|
|
if( err != WSAENOPROTOOPT )
|
|
Con_Printf( S_WARN "NET_UDPSocket: port: %d setsockopt IP_TOS: %s\n", port, NET_ErrorString( ));
|
|
pCloseSocket( net_socket );
|
|
return INVALID_SOCKET;
|
|
}
|
|
}
|
|
|
|
if( !net_interface[0] || !Q_stricmp( net_interface, "localhost" ))
|
|
addr.sin_addr.s_addr = INADDR_ANY;
|
|
else NET_StringToSockaddr( net_interface, (struct sockaddr *)&addr );
|
|
|
|
if( port == PORT_ANY ) addr.sin_port = 0;
|
|
else addr.sin_port = pHtons((short)port);
|
|
|
|
addr.sin_family = AF_INET;
|
|
|
|
if( pBind( net_socket, (void *)&addr, sizeof( addr )) == SOCKET_ERROR )
|
|
{
|
|
MsgDev( D_WARN, "NET_UDPSocket: port: %d bind: %s\n", port, NET_ErrorString( ));
|
|
pCloseSocket( net_socket );
|
|
return INVALID_SOCKET;
|
|
}
|
|
|
|
if( Sys_CheckParm( "-loopback" ))
|
|
{
|
|
optval = 1;
|
|
if( pSetSockopt( net_socket, IPPROTO_IP, IP_MULTICAST_LOOP, (const char *)&optval, sizeof( optval )) == SOCKET_ERROR )
|
|
MsgDev( D_WARN, "NET_UDPSocket: port %d setsockopt IP_MULTICAST_LOOP: %s\n", port, NET_ErrorString( ));
|
|
}
|
|
|
|
return net_socket;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_OpenIP
|
|
====================
|
|
*/
|
|
static void NET_OpenIP( void )
|
|
{
|
|
int port, sv_port = 0, cl_port = 0;
|
|
|
|
if( net.ip_sockets[NS_SERVER] == INVALID_SOCKET )
|
|
{
|
|
port = net_iphostport->value;
|
|
if( !port ) port = net_hostport->value;
|
|
if( !port ) port = PORT_SERVER; // forcing to default
|
|
net.ip_sockets[NS_SERVER] = NET_IPSocket( net_ipname->string, port, false );
|
|
|
|
if( net.ip_sockets[NS_SERVER] == INVALID_SOCKET && host.type == HOST_DEDICATED )
|
|
Host_Error( "Couldn't allocate dedicated server IP port %d.\n", port );
|
|
sv_port = port;
|
|
}
|
|
|
|
// dedicated servers don't need client ports
|
|
if( host.type == HOST_DEDICATED ) return;
|
|
|
|
if( net.ip_sockets[NS_CLIENT] == INVALID_SOCKET )
|
|
{
|
|
port = net_ipclientport->value;
|
|
if( !port ) port = net_clientport->value;
|
|
if( !port ) port = PORT_ANY; // forcing to default
|
|
net.ip_sockets[NS_CLIENT] = NET_IPSocket( net_ipname->string, port, false );
|
|
|
|
if( net.ip_sockets[NS_CLIENT] == INVALID_SOCKET )
|
|
net.ip_sockets[NS_CLIENT] = NET_IPSocket( net_ipname->string, PORT_ANY, false );
|
|
cl_port = port;
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
NET_GetLocalAddress
|
|
|
|
Returns the servers' ip address as a string.
|
|
================
|
|
*/
|
|
void NET_GetLocalAddress( void )
|
|
{
|
|
char buff[512];
|
|
struct sockaddr_in address;
|
|
int namelen;
|
|
|
|
memset( &net_local, 0, sizeof( netadr_t ));
|
|
buff[0] = '\0';
|
|
|
|
if( net.allow_ip )
|
|
{
|
|
// If we have changed the ip var from the command line, use that instead.
|
|
if( Q_strcmp( net_ipname->string, "localhost" ))
|
|
{
|
|
Q_strcpy( buff, net_ipname->string );
|
|
}
|
|
else
|
|
{
|
|
pGetHostName( buff, 512 );
|
|
}
|
|
|
|
// ensure that it doesn't overrun the buffer
|
|
buff[511] = 0;
|
|
|
|
if( NET_StringToAdr( buff, &net_local ))
|
|
{
|
|
namelen = sizeof( address );
|
|
|
|
if( pGetSockName( net.ip_sockets[NS_SERVER], (struct sockaddr *)&address, &namelen ) == SOCKET_ERROR )
|
|
{
|
|
// this may happens if multiple clients running on single machine
|
|
MsgDev( D_ERROR, "Could not get TCP/IP address. Reason: %s\n", NET_ErrorString( ));
|
|
// net.allow_ip = false;
|
|
}
|
|
else
|
|
{
|
|
net_local.port = address.sin_port;
|
|
Con_Printf( "Server IP address %s\n", NET_AdrToString( net_local ));
|
|
Cvar_FullSet( "net_address", va( NET_AdrToString( net_local )), FCVAR_READ_ONLY );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MsgDev( D_ERROR, "Could not get TCP/IP address, Invalid hostname: '%s'\n", buff );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Con_Printf( "TCP/IP Disabled.\n" );
|
|
}
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_Config
|
|
|
|
A single player game will only use the loopback code
|
|
====================
|
|
*/
|
|
void NET_Config( qboolean multiplayer )
|
|
{
|
|
static qboolean bFirst = true;
|
|
static qboolean old_config;
|
|
|
|
if( !net.initialized )
|
|
return;
|
|
|
|
if( old_config == multiplayer )
|
|
return;
|
|
|
|
old_config = multiplayer;
|
|
|
|
if( multiplayer )
|
|
{
|
|
// open sockets
|
|
if( net.allow_ip ) NET_OpenIP();
|
|
|
|
// get our local address, if possible
|
|
if( bFirst )
|
|
{
|
|
NET_GetLocalAddress();
|
|
bFirst = false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int i;
|
|
|
|
// shut down any existing sockets
|
|
for( i = 0; i < NS_COUNT; i++ )
|
|
{
|
|
if( net.ip_sockets[i] != INVALID_SOCKET )
|
|
{
|
|
pCloseSocket( net.ip_sockets[i] );
|
|
net.ip_sockets[i] = INVALID_SOCKET;
|
|
}
|
|
}
|
|
}
|
|
|
|
NET_ClearLoopback ();
|
|
|
|
net.configured = multiplayer ? true : false;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_IsConfigured
|
|
|
|
Is winsock ip initialized?
|
|
====================
|
|
*/
|
|
qboolean NET_IsConfigured( void )
|
|
{
|
|
return net.configured;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_IsActive
|
|
====================
|
|
*/
|
|
qboolean NET_IsActive( void )
|
|
{
|
|
return net.initialized;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_Sleep
|
|
|
|
sleeps msec or until net socket is ready
|
|
====================
|
|
*/
|
|
void NET_Sleep( int msec )
|
|
{
|
|
struct timeval timeout;
|
|
fd_set fdset;
|
|
int i = 0;
|
|
|
|
if( !net.initialized || host.type == HOST_NORMAL )
|
|
return; // we're not a dedicated server, just run full speed
|
|
|
|
FD_ZERO( &fdset );
|
|
|
|
if( net.ip_sockets[NS_SERVER] != INVALID_SOCKET )
|
|
{
|
|
FD_SET( net.ip_sockets[NS_SERVER], &fdset ); // network socket
|
|
i = net.ip_sockets[NS_SERVER];
|
|
}
|
|
|
|
timeout.tv_sec = msec / 1000;
|
|
timeout.tv_usec = (msec % 1000) * 1000;
|
|
pSelect( i+1, &fdset, NULL, NULL, &timeout );
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_ClearLagData
|
|
|
|
clear fakelag list
|
|
====================
|
|
*/
|
|
void NET_ClearLagData( qboolean bClient, qboolean bServer )
|
|
{
|
|
if( bClient ) NET_ClearLaggedList( &net.lagdata[NS_CLIENT] );
|
|
if( bServer ) NET_ClearLaggedList( &net.lagdata[NS_SERVER] );
|
|
}
|
|
|
|
/*
|
|
====================
|
|
NET_Init
|
|
====================
|
|
*/
|
|
void NET_Init( void )
|
|
{
|
|
char cmd[64];
|
|
int i = 1;
|
|
|
|
if( net.initialized ) return;
|
|
|
|
net_clockwindow = Cvar_Get( "clockwindow", "0.5", 0, "timewindow to execute client moves" );
|
|
net_address = Cvar_Get( "net_address", "0", FCVAR_READ_ONLY, "contain local address of current client" );
|
|
net_ipname = Cvar_Get( "ip", "localhost", FCVAR_READ_ONLY, "network ip address" );
|
|
net_iphostport = Cvar_Get( "ip_hostport", "0", FCVAR_READ_ONLY, "network ip host port" );
|
|
net_hostport = Cvar_Get( "hostport", va( "%i", PORT_SERVER ), FCVAR_READ_ONLY, "network default host port" );
|
|
net_ipclientport = Cvar_Get( "ip_clientport", "0", FCVAR_READ_ONLY, "network ip client port" );
|
|
net_clientport = Cvar_Get( "clientport", va( "%i", PORT_CLIENT ), FCVAR_READ_ONLY, "network default client port" );
|
|
net_fakelag = Cvar_Get( "fakelag", "0", 0, "lag all incoming network data (including loopback) by xxx ms." );
|
|
net_fakeloss = Cvar_Get( "fakeloss", "0", 0, "act like we dropped the packet this % of the time." );
|
|
|
|
// prepare some network data
|
|
for( i = 0; i < NS_COUNT; i++ )
|
|
{
|
|
net.lagdata[i].prev = &net.lagdata[i];
|
|
net.lagdata[i].next = &net.lagdata[i];
|
|
net.ip_sockets[i] = INVALID_SOCKET;
|
|
}
|
|
|
|
if( !NET_OpenWinSock( )) // loading wsock32.dll
|
|
{
|
|
MsgDev( D_ERROR, "network failed to load wsock32.dll.\n" );
|
|
return;
|
|
}
|
|
|
|
if( pWSAStartup( MAKEWORD( 1, 1 ), &net.winsockdata ))
|
|
{
|
|
MsgDev( D_ERROR, "network initialization failed.\n" );
|
|
NET_FreeWinSock();
|
|
return;
|
|
}
|
|
|
|
if( Sys_CheckParm( "-noip" ))
|
|
net.allow_ip = false;
|
|
else net.allow_ip = true;
|
|
|
|
// specify custom host port
|
|
if( Sys_GetParmFromCmdLine( "-port", cmd ) && Q_isdigit( cmd ))
|
|
Cvar_FullSet( "hostport", cmd, FCVAR_READ_ONLY );
|
|
|
|
// adjust clockwindow
|
|
if( Sys_GetParmFromCmdLine( "-clockwindow", cmd ))
|
|
Cvar_SetValue( "clockwindow", Q_atof( cmd ));
|
|
|
|
net.sequence_number = 1;
|
|
net.initialized = true;
|
|
MsgDev( D_REPORT, "Base networking initialized.\n" );
|
|
}
|
|
|
|
|
|
/*
|
|
====================
|
|
NET_Shutdown
|
|
====================
|
|
*/
|
|
void NET_Shutdown( void )
|
|
{
|
|
if( !net.initialized )
|
|
return;
|
|
|
|
NET_ClearLagData( true, true );
|
|
|
|
NET_Config( false );
|
|
pWSACleanup();
|
|
NET_FreeWinSock();
|
|
net.initialized = false;
|
|
} |