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Diffstat (limited to 'QW/client/net.h')
| -rw-r--r-- | QW/client/net.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/QW/client/net.h b/QW/client/net.h new file mode 100644 index 0000000..30be2f7 --- /dev/null +++ b/QW/client/net.h @@ -0,0 +1,112 @@ +/* +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); + |