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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.27 by root, Thu Dec 21 06:12:37 2006 UTC vs.
Revision 1.43 by root, Mon Apr 2 18:55:22 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * CrossFire, A Multiplayer game for X-windows
3 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
4 Copyright (C) 2001 Mark Wedel 5 * Copyright (C) 2001 Mark Wedel
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (C) 1992 Frank Tore Johansen
6 7 *
7 This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version. 11 * (at your option) any later version.
11 12 *
12 This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 16 * GNU General Public License for more details.
16 17 *
17 You should have received a copy of the GNU General Public License 18 * You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software 19 * along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 21 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The author can be reached via e-mail to <crossfire@schmorp.de>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Socket general functions 27 * Socket general functions
27 * 28 *
… …
42#include <netinet/ip.h> 43#include <netinet/ip.h>
43#include <netdb.h> 44#include <netdb.h>
44 45
45#include <unistd.h> 46#include <unistd.h>
46#include <arpa/inet.h> 47#include <arpa/inet.h>
48
49#include <algorithm>
47 50
48sockvec clients; 51sockvec clients;
49 52
50/** 53/**
51 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
… …
56: fd (fd), host (strdup (peername)), 59: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client::socket_cb), 60 socket_ev (this, &client::socket_cb),
58 cmd_ev (this, &client::cmd_cb), 61 cmd_ev (this, &client::cmd_cb),
59 cc_inv (this), cc_other (this) 62 cc_inv (this), cc_other (this)
60{ 63{
64 refcnt_inc (); // the socket is an external reference
65
66 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
67
61 { 68 {
62 struct linger linger_opt; 69 struct linger linger_opt;
63 70
64 linger_opt.l_onoff = 0; 71 linger_opt.l_onoff = 0;
65 linger_opt.l_linger = 0; 72 linger_opt.l_linger = 0;
… …
67 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 74 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 75 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 } 76 }
70 77
71 { 78 {
79 int val;
80
81#ifdef IP_TOS
72 int val = IPTOS_LOWDELAY; 82 val = IPTOS_LOWDELAY;
73
74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 83 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
75 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 84 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
76 } 85#endif
77 86
78 { 87#ifdef TCP_NODELAY
79 int val = 1; 88 val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 89 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 90 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
91#endif
92
93 // set some very aggressive keepalive parameters
94#ifdef TCP_KEEPIDLE
95 val = 10;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
98#endif
99
100#ifdef TCP_KEEPCNT
101 val = 5;
102 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
103 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
104#endif
105
106#ifdef TCP_KEEPINTVL
107 val = 1;
108 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
109 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
110#endif
111
112 // try to find the mss value in use
113#ifdef TCP_MAXSEG
114 socklen_t sl = sizeof (val);
115 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
116 mss = val;
117#endif
83 } 118 }
84
85#ifdef __linux__
86 {
87 int val;
88
89 // set some very aggressive keepalive parameters
90 val = 10;
91 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
92 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
93
94 val = 5;
95 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
96 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
97
98 val = 1;
99 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
100 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
101 }
102#endif
103 119
104 { 120 {
105 int bufsize = 65535; /*Supposed absolute upper limit */ 121 int bufsize = 65535; /*Supposed absolute upper limit */
106 int oldbufsize; 122 int oldbufsize;
107 int buflen = sizeof (int); 123 int buflen = sizeof (int);
… …
118 134
119 buflen = sizeof (oldbufsize); 135 buflen = sizeof (oldbufsize);
120 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 136 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
121 } 137 }
122 138
139 state = ST_SETUP;
123 mapmode = Map0Cmd; 140 mapmode = Map0Cmd;
124 darkness = 1; 141 darkness = 1;
125 mapx = 11; 142 mapx = 11;
126 mapy = 11; 143 mapy = 11;
127 itemcmd = 1; /* Default is version item1 command */ 144 itemcmd = 1; /* Default is version item1 command */
128 145 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
129 faces_sent = salloc0<uint8> (nrofpixmaps);
130 146
131 /* Do this so we don't send a face command for the client for 147 /* Do this so we don't send a face command for the client for
132 * this face. Face 0 is sent to the client to say clear 148 * this face. Face 0 is sent to the client to say clear
133 * face information. 149 * face information.
134 */ 150 */
135 faces_sent[0] = NS_FACESENT_FACE; 151 faces_sent[0] = true;
136 152
137 // socket I/O is low priority
138 // we prefer to have the server run instead of handling client requests
139 socket_ev.prio (PE_PRIO_NORMAL + 1); 153 socket_ev.prio (PE_PRIO_NORMAL);
140 socket_ev.fd (fd); 154 socket_ev.fd (fd);
141 socket_ev.poll (PE_R); 155 socket_ev.poll (PE_R);
142 156
143 // command handling is even lower priority
144 // that way no client can monopolise the server
145 cmd_ev.prio (PE_PRIO_NORMAL + 2); 157 cmd_ev.prio (PE_PRIO_NORMAL);
146 158
147 // initialisation done, kick it! 159 // initialisation done, kick it!
148 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 160 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
149 flush (); 161 flush ();
150 162
151#if 0//TODO 163 reset_stats ();
152 socket_info.nconns++; 164
153 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 165 clients.insert (this);
154 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
155#endif
156} 166}
157 167
158client::~client () 168client::~client ()
159{ 169{
160 if (pl) 170 clients.erase (this);
161 pl->socket = 0;
162 171
163 if (fd >= 0)
164 close (fd);
165
166 sfree<uint8> (faces_sent, nrofpixmaps);
167 free (stats.range); 172 free (stats.range);
168 free (stats.title); 173 free (stats.title);
169 free (host); 174 free (host);
170} 175}
171 176
172void 177void
173client::destroy () 178client::do_destroy ()
174{ 179{
175 destroyed = true; 180 attachable::do_destroy ();
181
182 if (pl)
183 pl->disconnect ();
184
185 if (fd >= 0)
186 {
187 send_packet ("goodbye");
188 flush ();
189
190 close (fd);
191 }
192
193 state = ST_DEAD;
176 194
177 socket_ev.suspend (); 195 socket_ev.suspend ();
178 cmd_ev.suspend (); 196 cmd_ev.suspend ();
197
198 refcnt_dec (); // socket no longer open
199}
200
201void
202client::reset_stats ()
203{
204 /* we need to clear these to -1 and not zero - otherwise,
205 * if a player quits and starts a new character, we wont
206 * send new values to the client, as things like exp start
207 * at zero.
208 */
209 for (int i = 0; i < NUM_SKILLS; i++)
210 last_skill_exp[i] = -1;
211
212 for (int i = 0; i < NROFATTACKS; i++)
213 last_resist[i] = -1;
214
215 last_weapon_sp = -1;
216 last_level = -1;
217 last_stats.exp = -1;
218 last_weight = (uint32) - 1;
219 last_flags = 0;
220 last_weight = 0;
221 last_weight_limit = 0;
222 last_path_attuned = 0;
223 last_path_repelled = 0;
224 last_path_denied = 0;
225 last_speed = 0;
226 flags = 0;
227
228 static living zero_living;
229 last_stats = zero_living;
179} 230}
180 231
181/** This sets up the socket and reads all the image information into memory. */ 232/** This sets up the socket and reads all the image information into memory. */
182void 233void
183init_ericserver (void) 234init_ericserver (void)
184{ 235{
185 cst_tot.time_start = time (NULL); 236 cst_tot.time_start = time (NULL);
186 cst_lst.time_start = time (NULL); 237 cst_lst.time_start = time (NULL);
187 238
188 LOG (llevDebug, "Initialize new client/server data\n"); 239 LOG (llevDebug, "Initialize new client/server data\n");
189
190 read_client_images ();
191} 240}
192 241
193 242
194/******************************************************************************* 243/*******************************************************************************
195 * 244 *
… …
203{ 252{
204 LOG (llevDebug, "Freeing all new client/server information.\n"); 253 LOG (llevDebug, "Freeing all new client/server information.\n");
205 free_socket_images (); 254 free_socket_images ();
206} 255}
207 256
208/** Sends the 'goodbye' command to the player, and closes connection. */
209void
210final_free_player (player *pl)
211{
212 free_player (pl);
213}
214
215client * 257client *
216client::create (int fd, const char *peername) 258client::create (int fd, const char *peername)
217{ 259{
218 if (checkbanned (NULL, peername))
219 {
220 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
221 return 0;
222 }
223 else
224 {
225 client *ns = new client (dup (fd), peername); 260 client *ns = new client (dup (fd), peername);
226 clients.push_back (ns);
227
228 ns->instantiate (); // effectively a nop right now 261 ns->instantiate (); // effectively a nop right now
229
230 INVOKE_CLIENT (CONNECT, ns); 262 INVOKE_CLIENT (CONNECT, ns);
231
232 return ns; 263 return ns;
233 }
234} 264}
235 265

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