2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2003 Forest Hale
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 See the GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #define NET_HEADERSIZE (2 * sizeof(unsigned int))
30 #define NETFLAG_LENGTH_MASK 0x0000ffff
31 #define NETFLAG_DATA 0x00010000
32 #define NETFLAG_ACK 0x00020000
33 #define NETFLAG_NAK 0x00040000
34 #define NETFLAG_EOM 0x00080000
35 #define NETFLAG_UNRELIABLE 0x00100000
36 #define NETFLAG_CTL 0x80000000
39 #define NET_PROTOCOL_VERSION 3
41 // This is the network info/connection protocol. It is used to find Quake
42 // servers, get info about them, and connect to them. Once connected, the
43 // Quake game protocol (documented elsewhere) is used.
47 // game_name is currently always "QUAKE", but is there so this same protocol
48 // can be used for future games as well; can you say Quake2?
51 // string game_name "QUAKE"
52 // byte net_protocol_version NET_PROTOCOL_VERSION
55 // string game_name "QUAKE"
56 // byte net_protocol_version NET_PROTOCOL_VERSION
73 // string server_address
76 // byte current_players
78 // byte protocol_version NET_PROTOCOL_VERSION
93 // There are two address forms used above. The short form is just a
94 // port number. The address that goes along with the port is defined as
95 // "whatever address you receive this reponse from". This lets us use
96 // the host OS to solve the problem of multiple host addresses (possibly
97 // with no routing between them); the host will use the right address
98 // when we reply to the inbound connection request. The long from is
99 // a full address and port in a string. It is used for returning the
100 // address of a server that is not running locally.
102 #define CCREQ_CONNECT 0x01
103 #define CCREQ_SERVER_INFO 0x02
104 #define CCREQ_PLAYER_INFO 0x03
105 #define CCREQ_RULE_INFO 0x04
107 #define CCREP_ACCEPT 0x81
108 #define CCREP_REJECT 0x82
109 #define CCREP_SERVER_INFO 0x83
110 #define CCREP_PLAYER_INFO 0x84
111 #define CCREP_RULE_INFO 0x85
113 typedef struct netconn_s
115 struct netconn_s *next;
117 lhnetsocket_t *mysocket;
118 lhnetaddress_t peeraddress;
120 // requested rate in bytes per second
123 // this is mostly identical to qsocket_t from quake
125 // if this time is reached, kick off peer
128 double lastMessageTime;
134 unsigned int ackSequence;
135 unsigned int sendSequence;
136 unsigned int unreliableSendSequence;
137 int sendMessageLength;
138 qbyte sendMessage[NET_MAXMESSAGE];
140 unsigned int receiveSequence;
141 unsigned int unreliableReceiveSequence;
142 int receiveMessageLength;
143 qbyte receiveMessage[NET_MAXMESSAGE];
148 extern netconn_t *netconn_list;
149 extern mempool_t *netconn_mempool;
151 extern cvar_t hostname;
152 extern cvar_t developer_networking;
153 extern char playername[];
154 extern int playercolor;
156 #define HOSTCACHESIZE 128
160 // ping time for sorting servers
162 // used to calculate ping when update comes in
164 // address for connecting
166 // description (seen by user)
171 extern int hostCacheCount;
172 extern hostcache_t hostcache[HOSTCACHESIZE];
174 #if !defined(_WIN32 ) && !defined (__linux__) && !defined (__sun__)
176 extern unsigned long htonl (unsigned long hostlong);
179 extern unsigned short htons (unsigned short hostshort);
182 extern unsigned long ntohl (unsigned long netlong);
185 extern unsigned short ntohs (unsigned short netshort);
189 //============================================================================
191 // public network functions
193 //============================================================================
195 extern double masterquerytime;
196 extern int masterquerycount;
197 extern int masterreplycount;
198 extern int serverquerycount;
199 extern int serverreplycount;
201 extern sizebuf_t net_message;
203 extern cvar_t cl_netlocalping;
205 int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data);
206 //void NetConn_SendMessageNext(netconn_t *conn);
207 //void NetConn_ReSendMessage(netconn_t *conn);
208 qboolean NetConn_CanSendMessage(netconn_t *conn);
209 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data);
210 void NetConn_CloseClientPorts(void);
211 void NetConn_OpenClientPorts(void);
212 void NetConn_CloseServerPorts(void);
213 void NetConn_OpenServerPorts(int opennetports);
214 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address);
215 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address);
216 void NetConn_Init(void);
217 void NetConn_Shutdown(void);
218 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress);
219 void NetConn_Close(netconn_t *conn);
220 void NetConn_Listen(qboolean state);
221 int NetConn_IsLocalGame(void);
222 //int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length);
223 //int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress);
224 //int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress);
225 void NetConn_ClientFrame(void);
226 void NetConn_ServerFrame(void);
227 void NetConn_QueryMasters(void);
228 void NetConn_Heartbeat(int priority);
229 int NetConn_SendToAll(sizebuf_t *data, double blocktime);
230 void Net_Stats_f(void);
231 void Net_Slist_f(void);