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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.34 by root, Sun Jan 7 02:39:15 2007 UTC vs.
Revision 1.67 by root, Mon Apr 12 05:22:38 2010 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 3 *
4 Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 Copyright (C) 2001 Mark Wedel 5 *
6 Copyright (C) 1992 Frank Tore Johansen 6 * Deliantra is free software: you can redistribute it and/or modify it under
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by 7 * the terms of the Affero GNU General Public License as published by the
10 the Free Software Foundation; either version 2 of the License, or 8 * Free Software Foundation, either version 3 of the License, or (at your
11 (at your option) any later version. 9 * option) any later version.
12 10 *
13 This program is distributed in the hope that it will be useful, 11 * This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details. 14 * GNU General Public License for more details.
17 15 *
18 You should have received a copy of the GNU General Public License 16 * You should have received a copy of the Affero GNU General Public License
19 along with this program; if not, write to the Free Software 17 * and the GNU General Public License along with this program. If not, see
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 * <http://www.gnu.org/licenses/>.
21 19 *
22 The author can be reached via e-mail to <crossfire@schmorp.de> 20 * The authors can be reached via e-mail to <support@deliantra.net>
23*/ 21 */
24 22
25/** 23/*
26 * \file
27 * Socket general functions 24 * Socket general functions
28 *
29 * \date 2003-12-02
30 *
31 * Mainly deals with initialization and higher level socket
32 * maintenance (checking for lost connections and if data has arrived.)
33 * The reading of data is handled in ericserver.c
34 */ 25 */
35 26
36#include <global.h> 27#include <global.h>
37#include <sproto.h> 28#include <sproto.h>
38#include <sys/types.h> 29#include <sys/types.h>
… …
46#include <unistd.h> 37#include <unistd.h>
47#include <arpa/inet.h> 38#include <arpa/inet.h>
48 39
49#include <algorithm> 40#include <algorithm>
50 41
42// use relatively small values, as we do not expect to receive much,
43// and we do userspace write buffering
44// 8kb limits throughput to roughly 66kb/s
45#define SOCKET_RCVBUF 8192
46#define SOCKET_SNDBUF 16384
47
51sockvec clients; 48sockvec clients;
52 49
53/** 50/**
54 * Initializes a connection. Really, it just sets up the data structure, 51 * Initializes a connection. Really, it just sets up the data structure,
55 * socket setup is handled elsewhere. We do send a version to the 52 * socket setup is handled elsewhere. We do send a version to the
56 * client. 53 * client.
57 */ 54 */
58client::client (int fd, const char *peername) 55client::client (int fd, const char *peername)
59: fd (fd), host (strdup (peername)), 56: fd (fd), host (strdup (peername)),
60 socket_ev (this, &client::socket_cb), 57 socket_ev (this, &client::socket_cb)
61 cmd_ev (this, &client::cmd_cb),
62 cc_inv (this), cc_other (this)
63{ 58{
64 refcnt_inc (); // the socket is an external reference 59 refcnt_inc (); // the socket is an external reference
60
61 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
62
63 socket_timeout = 16.;
65 64
66 { 65 {
67 struct linger linger_opt; 66 struct linger linger_opt;
68 67
69 linger_opt.l_onoff = 0; 68 linger_opt.l_onoff = 0;
70 linger_opt.l_linger = 0; 69 linger_opt.l_linger = 0;
71 70
72 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 71 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
73 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 72 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
74 } 73 }
75 74
76 { 75 {
76 int val;
77
78#ifdef SO_RCVBUF
79 val = SOCKET_RCVBUF;
80 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
81 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
82#endif
83
84#ifdef SO_SNDBUF
85 val = SOCKET_SNDBUF;
86 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
87 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
88#endif
89
90#ifdef IP_TOS
77 int val = IPTOS_LOWDELAY; 91 val = IPTOS_LOWDELAY;
78
79 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 92 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
80 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 93 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
81 } 94#endif
82 95
83 { 96#ifdef TCP_NODELAY
84 int val = 1; 97 val = 1;
85
86 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
87 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 99 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
100#endif
101
102 // set some very aggressive keepalive parameters
103#ifdef TCP_KEEPIDLE
104 val = 1;
105 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
106 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
107#endif
108
109#ifdef TCP_KEEPCNT
110 val = 3;
111 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
112 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
113#endif
114
115#ifdef TCP_KEEPINTVL
116 val = 1;
117 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
118 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
119#endif
120
121 // try to find the mss value in use
122#ifdef TCP_MAXSEG
123 socklen_t sl = sizeof (val);
124 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
125 mss = val;
126#endif
88 } 127 }
89 128
90#ifdef __linux__
91 {
92 int val;
93
94 // set some very aggressive keepalive parameters
95 val = 10;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
98
99 val = 5;
100 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
101 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
102
103 val = 1;
104 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
105 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
106 }
107#endif
108
109 {
110 int bufsize = 65535; /*Supposed absolute upper limit */
111 int oldbufsize;
112 int buflen = sizeof (int);
113
114 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 129 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
115 LOG (llevError, "InitConnection: Error on fcntl.\n"); 130 LOG (llevError, "InitConnection: Error on fcntl.\n");
116
117 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
118 oldbufsize = 0;
119
120 if (oldbufsize < bufsize)
121 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
122 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
123
124 buflen = sizeof (oldbufsize);
125 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
126 }
127 131
128 state = ST_SETUP; 132 state = ST_SETUP;
129 mapmode = Map0Cmd; 133 mapmode = Map1aCmd;
130 darkness = 1;
131 mapx = 11; 134 mapx = 11;
132 mapy = 11; 135 mapy = 11;
133 itemcmd = 1; /* Default is version item1 command */ 136 itemcmd = 1; /* Default is version item1 command */
134 137 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
135 faces_sent = salloc0<uint8> (nrofpixmaps);
136 138
137 /* Do this so we don't send a face command for the client for 139 /* Do this so we don't send a face command for the client for
138 * this face. Face 0 is sent to the client to say clear 140 * this face. Face 0 is sent to the client to say clear
139 * face information. 141 * face information.
140 */ 142 */
141 faces_sent[0] = NS_FACESENT_FACE; 143 faces_sent[0] = true;
144 fx_want [FT_FACE] = true; // all clients must support image faces
142 145
143 // socket I/O is low priority 146 socket_ev.set (fd, EV_READ);
144 // we prefer to have the server run instead of handling client requests 147 socket_ev.prio (2); // one higher than the ticker priority
145 socket_ev.prio (PE_PRIO_NORMAL + 1);
146 socket_ev.fd (fd); 148 socket_ev.start ();
147 socket_ev.poll (PE_R);
148
149 // command handling is even lower priority
150 // that way no client can monopolise the server
151 cmd_ev.prio (PE_PRIO_NORMAL + 2);
152 149
153 // initialisation done, kick it! 150 // initialisation done, kick it!
154 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 151 INVOKE_CLIENT (CONNECT, this);
152
155 flush (); 153 flush ();
156 154
155 reset_stats ();
156
157 clients.insert (this); 157 clients.insert (this);
158} 158}
159 159
160client::~client () 160client::~client ()
161{ 161{
162 clients.erase (this); 162 clients.erase (this);
163 163
164 sfree<uint8> (faces_sent, nrofpixmaps); 164 mapinfo_queue_clear ();
165 free (stats.range); 165 free (stats.range);
166 free (stats.title); 166 free (stats.title);
167 free (host); 167 free (host);
168} 168}
169 169
170void 170void
171client::do_destroy () 171client::do_destroy ()
172{ 172{
173 INVOKE_CLIENT (CLIENT_DESTROY, this);
173 attachable::do_destroy (); 174 attachable::do_destroy ();
174 175
175 if (pl) 176 if (pl)
176 pl->disconnect (); 177 pl->disconnect ();
177 178
… …
183 close (fd); 184 close (fd);
184 } 185 }
185 186
186 state = ST_DEAD; 187 state = ST_DEAD;
187 188
188 socket_ev.suspend (); 189 socket_ev.stop ();
189 cmd_ev.suspend ();
190 190
191 refcnt_dec (); // socket no longer open 191 refcnt_dec (); // socket no longer open
192} 192}
193 193
194/** This sets up the socket and reads all the image information into memory. */
195void 194void
196init_ericserver (void) 195client::reset_stats ()
197{ 196{
198 cst_tot.time_start = time (NULL); 197 /* we need to clear these to -1 and not zero - otherwise,
199 cst_lst.time_start = time (NULL); 198 * if a player quits and starts a new character, we wont
199 * send new values to the client, as things like exp start
200 * at zero.
201 */
202 for (int i = 0; i < NUM_SKILLS; i++)
203 last_skill_exp[i] = -1;
200 204
201 LOG (llevDebug, "Initialize new client/server data\n"); 205 for (int i = 0; i < NROFATTACKS; i++)
206 last_resist[i] = -1;
202 207
203 read_client_images (); 208 last_weapon_sp = -1;
204} 209 last_level = -1;
210 last_stats.exp = -1;
211 last_flags = 0;
212 last_weight = -1;
213 last_weight_limit = 0;
214 last_path_attuned = 0;
215 last_path_repelled = 0;
216 last_path_denied = 0;
217 last_speed = 0;
218 last_flags = 0;
205 219
206 220 static living zero_living;
207/******************************************************************************* 221 last_stats = zero_living;
208 *
209 * Start of functions dealing with freeing of the data.
210 *
211 ******************************************************************************/
212
213/** Free's all the memory that ericserver allocates. */
214void
215free_all_newserver (void)
216{
217 LOG (llevDebug, "Freeing all new client/server information.\n");
218 free_socket_images ();
219} 222}
220 223
221client * 224client *
222client::create (int fd, const char *peername) 225client::create (int fd, const char *peername)
223{ 226{
224 if (checkbanned (NULL, peername))
225 {
226 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
227 return 0;
228 }
229 else
230 {
231 client *ns = new client (dup (fd), peername); 227 client *ns = new client (dup (fd), peername);
232 228
233 ns->instantiate (); // effectively a nop right now 229 ns->instantiate (); // effectively a nop right now
234 230
235 INVOKE_CLIENT (CONNECT, ns);
236
237 return ns; 231 return ns;
238 }
239} 232}
240 233

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