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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.23 by root, Sun Dec 17 00:25:44 2006 UTC vs.
Revision 1.46 by root, Mon May 28 21:22:26 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3 3 *
4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
4 Copyright (C) 2001 Mark Wedel 5 * Copyright (©) 2001,2007 Mark Wedel
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
6 7 *
7 This program is free software; you can redistribute it and/or modify 8 * Crossfire TRT is free software; you can redistribute it and/or modify it
8 it under the terms of the GNU General Public License as published by 9 * under the terms of the GNU General Public License as published by the Free
9 the Free Software Foundation; either version 2 of the License, or 10 * Software Foundation; either version 2 of the License, or (at your option)
10 (at your option) any later version. 11 * 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, but
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 GNU General Public License for more details. 16 * 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 along
18 along with this program; if not, write to the Free Software 19 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 21 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The authors 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 *
… …
29 * 30 *
30 * Mainly deals with initialization and higher level socket 31 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 32 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c 33 * The reading of data is handled in ericserver.c
33 */ 34 */
34
35 35
36#include <global.h> 36#include <global.h>
37#include <sproto.h> 37#include <sproto.h>
38#include <sys/types.h> 38#include <sys/types.h>
39#include <sys/time.h> 39#include <sys/time.h>
… …
44#include <netdb.h> 44#include <netdb.h>
45 45
46#include <unistd.h> 46#include <unistd.h>
47#include <arpa/inet.h> 47#include <arpa/inet.h>
48 48
49#include <algorithm>
50
49sockvec clients; 51sockvec clients;
50 52
51/** 53/**
52 * Initializes a connection. Really, it just sets up the data structure, 54 * Initializes a connection. Really, it just sets up the data structure,
53 * socket setup is handled elsewhere. We do send a version to the 55 * socket setup is handled elsewhere. We do send a version to the
… …
56client::client (int fd, const char *peername) 58client::client (int fd, const char *peername)
57: fd (fd), host (strdup (peername)), 59: fd (fd), host (strdup (peername)),
58 socket_ev (this, &client::socket_cb), 60 socket_ev (this, &client::socket_cb),
59 cmd_ev (this, &client::cmd_cb) 61 cmd_ev (this, &client::cmd_cb)
60{ 62{
63 refcnt_inc (); // the socket is an external reference
64
65 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
66
61 { 67 {
62 struct linger linger_opt; 68 struct linger linger_opt;
63 69
64 linger_opt.l_onoff = 0; 70 linger_opt.l_onoff = 0;
65 linger_opt.l_linger = 0; 71 linger_opt.l_linger = 0;
66 72
67 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 73 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 74 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 } 75 }
70 76
71 { 77 {
78 int val;
79
80#ifdef IP_TOS
72 int val = IPTOS_LOWDELAY; 81 val = IPTOS_LOWDELAY;
73
74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 82 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
75 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 83 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
76 } 84#endif
77 85
78 { 86#ifdef TCP_NODELAY
79 int val = 1; 87 val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 88 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 89 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
90#endif
91
92 // set some very aggressive keepalive parameters
93#ifdef TCP_KEEPIDLE
94 val = 1;
95 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
96 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
97#endif
98
99#ifdef TCP_KEEPCNT
100 val = 3;
101 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
102 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
103#endif
104
105#ifdef TCP_KEEPINTVL
106 val = 1;
107 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
108 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
109#endif
110
111 // try to find the mss value in use
112#ifdef TCP_MAXSEG
113 socklen_t sl = sizeof (val);
114 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
115 mss = val;
116#endif
83 } 117 }
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
103 118
104 { 119 {
105 int bufsize = 65535; /*Supposed absolute upper limit */ 120 int bufsize = 65535; /*Supposed absolute upper limit */
106 int oldbufsize; 121 int oldbufsize;
107 int buflen = sizeof (int); 122 int buflen = sizeof (int);
… …
118 133
119 buflen = sizeof (oldbufsize); 134 buflen = sizeof (oldbufsize);
120 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 135 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
121 } 136 }
122 137
138 state = ST_SETUP;
123 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
124 darkness = 1; 140 darkness = 1;
125 status = Ns_Add;
126 mapx = 11; 141 mapx = 11;
127 mapy = 11; 142 mapy = 11;
128 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
129 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
130 faces_sent = salloc<uint8> (nrofpixmaps, 0);
131 145
132 /* Do this so we don't send a face command for the client for 146 /* Do this so we don't send a face command for the client for
133 * this face. Face 0 is sent to the client to say clear 147 * this face. Face 0 is sent to the client to say clear
134 * face information. 148 * face information.
135 */ 149 */
136 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
137 151
138 // socket I/O is low priority
139 // we prefer to have the server run instead of handling client requests
140 socket_ev.prio (PE_PRIO_NORMAL + 1); 152 socket_ev.prio (PE_PRIO_NORMAL);
141 socket_ev.fd (fd); 153 socket_ev.fd (fd);
142 socket_ev.poll (PE_R); 154 socket_ev.poll (PE_R);
143 155
144 // command handling is even lower priority
145 // that way no client can monopolise the server
146 cmd_ev.prio (PE_PRIO_NORMAL + 2); 156 cmd_ev.prio (PE_PRIO_NORMAL);
147 157
148 // initialisation done, kick it! 158 // initialisation done, kick it!
149 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 159 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
150 flush (); 160 flush ();
151 161
152#if 0//TODO 162 reset_stats ();
153 socket_info.nconns++; 163
154 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 164 clients.insert (this);
155 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
156#endif
157} 165}
158 166
159client::~client () 167client::~client ()
160{ 168{
161 if (pl) 169 clients.erase (this);
162 pl->socket = 0;
163 170
164 if (fd >= 0)
165 close (fd);
166
167 free (faces_sent);
168 free (stats.range); 171 free (stats.range);
169 free (stats.title); 172 free (stats.title);
170 free (host); 173 free (host);
171} 174}
172 175
173void 176void
174client::destroy () 177client::do_destroy ()
175{ 178{
176 status = Ns_Dead; 179 attachable::do_destroy ();
180
181 if (pl)
182 pl->disconnect ();
183
184 if (fd >= 0)
185 {
186 send_packet ("goodbye");
187 flush ();
188
189 close (fd);
190 }
191
192 state = ST_DEAD;
193
177 socket_ev.suspend (); 194 socket_ev.suspend ();
178 cmd_ev.suspend (); 195 cmd_ev.suspend ();
196
197 refcnt_dec (); // socket no longer open
198}
199
200void
201client::reset_stats ()
202{
203 /* we need to clear these to -1 and not zero - otherwise,
204 * if a player quits and starts a new character, we wont
205 * send new values to the client, as things like exp start
206 * at zero.
207 */
208 for (int i = 0; i < NUM_SKILLS; i++)
209 last_skill_exp[i] = -1;
210
211 for (int i = 0; i < NROFATTACKS; i++)
212 last_resist[i] = -1;
213
214 last_weapon_sp = -1;
215 last_level = -1;
216 last_stats.exp = -1;
217 last_weight = (uint32) - 1;
218 last_flags = 0;
219 last_weight = 0;
220 last_weight_limit = 0;
221 last_path_attuned = 0;
222 last_path_repelled = 0;
223 last_path_denied = 0;
224 last_speed = 0;
225 last_flags = 0;
226
227 static living zero_living;
228 last_stats = zero_living;
179} 229}
180 230
181/** This sets up the socket and reads all the image information into memory. */ 231/** This sets up the socket and reads all the image information into memory. */
182void 232void
183init_ericserver (void) 233init_ericserver (void)
184{ 234{
185 cst_tot.time_start = time (NULL); 235 cst_tot.time_start = time (NULL);
186 cst_lst.time_start = time (NULL); 236 cst_lst.time_start = time (NULL);
187 237
188 LOG (llevDebug, "Initialize new client/server data\n"); 238 LOG (llevDebug, "Initialize new client/server data\n");
189
190 read_client_images ();
191} 239}
192
193 240
194/******************************************************************************* 241/*******************************************************************************
195 * 242 *
196 * Start of functions dealing with freeing of the data. 243 * Start of functions dealing with freeing of the data.
197 * 244 *
… …
203{ 250{
204 LOG (llevDebug, "Freeing all new client/server information.\n"); 251 LOG (llevDebug, "Freeing all new client/server information.\n");
205 free_socket_images (); 252 free_socket_images ();
206} 253}
207 254
208/** Sends the 'goodbye' command to the player, and closes connection. */ 255client *
209void
210final_free_player (player *pl)
211{
212 free_player (pl);
213}
214
215bool
216add_client (int fd, const char *peername) 256client::create (int fd, const char *peername)
217{ 257{
218 if (checkbanned (NULL, peername))
219 {
220 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
221 return false;
222 }
223 else
224 {
225 client *ns = new client (dup (fd), peername); 258 client *ns = new client (dup (fd), peername);
226 clients.push_back (ns); 259 ns->instantiate (); // effectively a nop right now
227 return true; 260 INVOKE_CLIENT (CONNECT, ns);
228 } 261 return ns;
229} 262}
230 263

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