241 lines
7.6 KiB
C
241 lines
7.6 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// net.h -- quake's interface to the networking layer
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#define PORT_ANY -1
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typedef enum {NA_INVALID, NA_LOOPBACK, NA_IP, NA_IPV6, NA_IPX, NA_BROADCAST_IP, NA_BROADCAST_IP6, NA_BROADCAST_IPX, NA_TCP, NA_TCPV6, NA_IRC} netadrtype_t;
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typedef enum {NS_CLIENT, NS_SERVER} netsrc_t;
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typedef enum {NQP_ERROR, NQP_DATAGRAM, NQP_RELIABLE} nqprot_t;
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typedef struct
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{
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netadrtype_t type;
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union {
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qbyte ip[4];
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qbyte ip6[16];
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qbyte ipx[10];
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#ifdef IRCCONNECT
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struct {
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char user[32];
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char channel[12];
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} irc;
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#endif
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} address;
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unsigned short port;
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unsigned short connum;
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} netadr_t;
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struct sockaddr_qstorage
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{
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short dontusesa_family;
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unsigned char dontusesa_pad[6];
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#if defined(_MSC_VER) || defined(MINGW)
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__int64 sa_align;
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#else
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int sa_align[2];
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#endif
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unsigned char sa_pad2[112];
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};
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extern netadr_t net_local_cl_ipadr;
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extern netadr_t net_from; // address of who sent the packet
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extern sizebuf_t net_message;
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//#define MAX_UDP_PACKET (MAX_MSGLEN*2) // one more than msg + header
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#define MAX_UDP_PACKET 8192 // one more than msg + header
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extern qbyte net_message_buffer[MAX_UDP_PACKET];
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extern cvar_t hostname;
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int TCP_OpenStream (netadr_t remoteaddr); //makes things easier
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struct ftenet_connections_s;
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void NET_Init (void);
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void NET_InitClient (void);
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void NET_InitServer (void);
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void NET_CloseServer (void);
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void UDP_CloseSocket (int socket);
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void NET_Shutdown (void);
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qboolean NET_GetPacket (netsrc_t socket);
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void NET_SendPacket (netsrc_t socket, int length, void *data, netadr_t to);
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int NET_LocalAddressForRemote(struct ftenet_connections_s *collection, netadr_t *remote, netadr_t *local, int idx);
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void NET_PrintAddresses(struct ftenet_connections_s *collection);
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qboolean NET_AddressSmellsFunny(netadr_t a);
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void NET_EnsureRoute(struct ftenet_connections_s *collection, char *routename, char *host, qboolean islisten);
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qboolean NET_CompareAdr (netadr_t a, netadr_t b);
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qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b);
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char *NET_AdrToString (char *s, int len, netadr_t a);
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char *NET_BaseAdrToString (char *s, int len, netadr_t a);
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qboolean NET_StringToSockaddr (const char *s, struct sockaddr_qstorage *sadr);
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qboolean NET_StringToAdr (const char *s, netadr_t *a);
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qboolean NET_IsClientLegal(netadr_t *adr);
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qboolean NET_IsLoopBackAddress (netadr_t adr);
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qboolean NET_StringToAdrMasked (const char *s, netadr_t *a, netadr_t *amask);
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char *NET_AdrToStringMasked (char *s, int len, netadr_t a, netadr_t amask);
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void NET_IntegerToMask (netadr_t *a, netadr_t *amask, int bits);
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qboolean NET_CompareAdrMasked(netadr_t a, netadr_t b, netadr_t mask);
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struct ftenet_generic_connection_s *FTENET_IRCConnect_EstablishConnection(qboolean isserver, const char *address);
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qboolean FTENET_AddToCollection(struct ftenet_connections_s *col, const char *name, const char *address, struct ftenet_generic_connection_s *(*establish)(qboolean isserver, const char *address), qboolean islisten);
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//============================================================================
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#define OLD_AVG 0.99 // total = oldtotal*OLD_AVG + new*(1-OLD_AVG)
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#define MAX_LATENT 32
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#define MAX_ADR_SIZE 64
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typedef struct
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{
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qboolean fatal_error;
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#ifdef NQPROT
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qboolean isnqprotocol;
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#endif
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float last_received; // for timeouts
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// the statistics are cleared at each client begin, because
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// the server connecting process gives a bogus picture of the data
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float frame_latency; // rolling average
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float frame_rate;
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int drop_count; // dropped packets, cleared each level
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int good_count; // cleared each level
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netadr_t remote_address;
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netsrc_t sock;
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int qport;
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// bandwidth estimator
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double cleartime; // if realtime > nc->cleartime, free to go
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// double rate; // seconds / qbyte
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// sequencing variables
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int incoming_unreliable; //dictated by the other end.
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int incoming_sequence;
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int incoming_acknowledged;
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int incoming_reliable_acknowledged; // single bit
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int incoming_reliable_sequence; // single bit, maintained local
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int outgoing_unreliable;
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int outgoing_sequence;
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int reliable_sequence; // single bit
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int last_reliable_sequence; // sequence number of last send
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// reliable staging and holding areas
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sizebuf_t message; // writing buffer to send to server
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qbyte message_buf[MAX_OVERALLMSGLEN];
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//nq has message truncation.
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int reliable_length;
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int reliable_start;
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qbyte reliable_buf[MAX_OVERALLMSGLEN]; // unacked reliable message
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// time and size data to calculate bandwidth
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int outgoing_size[MAX_LATENT];
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double outgoing_time[MAX_LATENT];
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qboolean compress;
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//nq servers must recieve truncated packets.
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int in_fragment_length;
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char in_fragment_buf[MAX_OVERALLMSGLEN];
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int in_fragment_start;
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} netchan_t;
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extern int net_drop; // packets dropped before this one
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void Netchan_Init (void);
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int Netchan_Transmit (netchan_t *chan, int length, qbyte *data, int rate);
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void Netchan_OutOfBand (netsrc_t sock, netadr_t adr, int length, qbyte *data);
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void VARGS Netchan_OutOfBandPrint (netsrc_t sock, netadr_t adr, char *format, ...) LIKEPRINTF(3);
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void VARGS Netchan_OutOfBandTPrintf (netsrc_t sock, netadr_t adr, int language, translation_t text, ...);
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qboolean Netchan_Process (netchan_t *chan);
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void Netchan_Setup (netsrc_t sock, netchan_t *chan, netadr_t adr, int qport);
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qboolean Netchan_CanPacket (netchan_t *chan, int rate);
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void Netchan_Block (netchan_t *chan, int bytes, int rate);
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qboolean Netchan_CanReliable (netchan_t *chan, int rate);
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#ifdef NQPROT
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nqprot_t NQNetChan_Process(netchan_t *chan);
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#endif
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#ifdef HUFFNETWORK
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int Huff_PreferedCompressionCRC (void);
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void Huff_EncryptPacket(sizebuf_t *msg, int offset);
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void Huff_DecryptPacket(sizebuf_t *msg, int offset);
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qboolean Huff_CompressionCRC(int crc);
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void Huff_CompressPacket(sizebuf_t *msg, int offset);
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void Huff_DecompressPacket(sizebuf_t *msg, int offset);
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int Huff_GetByte(qbyte *buffer, int *count);
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void Huff_EmitByte(int ch, qbyte *buffer, int *count);
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#endif
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#ifdef NQPROT
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//taken from nq's net.h
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//refer to that for usage info. :)
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#define NETFLAG_LENGTH_MASK 0x0000ffff
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#define NETFLAG_DATA 0x00010000
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#define NETFLAG_ACK 0x00020000
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#define NETFLAG_NAK 0x00040000
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#define NETFLAG_EOM 0x00080000
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#define NETFLAG_UNRELIABLE 0x00100000
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#define NETFLAG_CTL 0x80000000
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#define NET_GAMENAME_NQ "QUAKE"
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#define NET_PROTOCOL_VERSION 3
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#define CCREQ_CONNECT 0x01
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#define CCREQ_SERVER_INFO 0x02
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#define CCREQ_PLAYER_INFO 0x03
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#define CCREQ_RULE_INFO 0x04
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#define CCREP_ACCEPT 0x81
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#define CCREP_REJECT 0x82
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#define CCREP_SERVER_INFO 0x83
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#define CCREP_PLAYER_INFO 0x84
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#define CCREP_RULE_INFO 0x85
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//server->client protocol info
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#define NQ_PROTOCOL_VERSION 15
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#define DP5_PROTOCOL_VERSION 3502
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#define DP6_PROTOCOL_VERSION 3503
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#define DP7_PROTOCOL_VERSION 3504
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#endif
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int UDP_OpenSocket (int port, qboolean bcast);
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int UDP6_OpenSocket (int port, qboolean bcast);
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int IPX_OpenSocket (int port, qboolean bcast);
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int NetadrToSockadr (netadr_t *a, struct sockaddr_qstorage *s);
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void SockadrToNetadr (struct sockaddr_qstorage *s, netadr_t *a);
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qboolean NET_Sleep(int msec, qboolean stdinissocket);
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