ref: 120cbddefb31ed3ac9d159f32300e15c13837665
dir: /QW/client/net.h/
/* Copyright (C) 1996-1997 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // net.h -- quake's interface to the networking layer #define PORT_ANY -1 typedef struct { byte ip[4]; unsigned short port; unsigned short pad; } netadr_t; extern netadr_t net_local_adr; extern netadr_t net_from; // address of who sent the packet extern sizebuf_t net_message; extern cvar_t hostname; extern int net_socket; void NET_Init (int port); void NET_Shutdown (void); qboolean NET_GetPacket (void); void NET_SendPacket (int length, void *data, netadr_t to); qboolean NET_CompareAdr (netadr_t a, netadr_t b); qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b); char *NET_AdrToString (netadr_t a); char *NET_BaseAdrToString (netadr_t a); qboolean NET_StringToAdr (char *s, netadr_t *a); qboolean NET_IsClientLegal(netadr_t *adr); //============================================================================ #define OLD_AVG 0.99 // total = oldtotal*OLD_AVG + new*(1-OLD_AVG) #define MAX_LATENT 32 typedef struct { qboolean fatal_error; float last_received; // for timeouts // the statistics are cleared at each client begin, because // the server connecting process gives a bogus picture of the data float frame_latency; // rolling average float frame_rate; int drop_count; // dropped packets, cleared each level int good_count; // cleared each level netadr_t remote_address; int qport; // bandwidth estimator double cleartime; // if realtime > nc->cleartime, free to go double rate; // seconds / byte // sequencing variables int incoming_sequence; int incoming_acknowledged; int incoming_reliable_acknowledged; // single bit int incoming_reliable_sequence; // single bit, maintained local int outgoing_sequence; int reliable_sequence; // single bit int last_reliable_sequence; // sequence number of last send // reliable staging and holding areas sizebuf_t message; // writing buffer to send to server byte message_buf[MAX_MSGLEN]; int reliable_length; byte reliable_buf[MAX_MSGLEN]; // unacked reliable message // time and size data to calculate bandwidth int outgoing_size[MAX_LATENT]; double outgoing_time[MAX_LATENT]; } netchan_t; extern int net_drop; // packets dropped before this one void Netchan_Init (void); void Netchan_Transmit (netchan_t *chan, int length, byte *data); void Netchan_OutOfBand (netadr_t adr, int length, byte *data); void Netchan_OutOfBandPrint (netadr_t adr, char *format, ...); qboolean Netchan_Process (netchan_t *chan); void Netchan_Setup (netchan_t *chan, netadr_t adr, int qport); qboolean Netchan_CanPacket (netchan_t *chan); qboolean Netchan_CanReliable (netchan_t *chan);