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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 1.66 by root, Thu Apr 8 19:31:22 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) 2001 Mark Wedel 4 * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 Copyright (C) 1992 Frank Tore Johansen 5 *
6 6 * Deliantra is free software: you can redistribute it and/or modify it under
7 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 7 * the terms of the Affero GNU General Public License as published by the
9 the Free Software Foundation; either version 2 of the License, or 8 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 9 * option) any later version.
11 10 *
12 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,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 14 * GNU General Public License for more details.
16 15 *
17 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
18 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
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 * <http://www.gnu.org/licenses/>.
20 19 *
21 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>
22*/ 21 */
23 22
24/** 23/*
25 * \file
26 * Socket general functions 24 * Socket general functions
27 *
28 * \date 2003-12-02
29 *
30 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c
33 */ 25 */
34 26
35#include <global.h> 27#include <global.h>
36#include <sproto.h> 28#include <sproto.h>
37#include <sys/types.h> 29#include <sys/types.h>
… …
43#include <netdb.h> 35#include <netdb.h>
44 36
45#include <unistd.h> 37#include <unistd.h>
46#include <arpa/inet.h> 38#include <arpa/inet.h>
47 39
40#include <algorithm>
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
48sockvec clients; 48sockvec clients;
49 49
50/** 50/**
51 * Initializes a connection. Really, it just sets up the data structure, 51 * Initializes a connection. Really, it just sets up the data structure,
52 * 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
53 * client. 53 * client.
54 */ 54 */
55client::client (int fd, const char *peername) 55client::client (int fd, const char *peername)
56: fd (fd), host (strdup (peername)), 56: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client::socket_cb), 57 socket_ev (this, &client::socket_cb)
58 cmd_ev (this, &client::cmd_cb),
59 cc_inv (this), cc_other (this)
60{ 58{
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.;
64
61 { 65 {
62 struct linger linger_opt; 66 struct linger linger_opt;
63 67
64 linger_opt.l_onoff = 0; 68 linger_opt.l_onoff = 0;
65 linger_opt.l_linger = 0; 69 linger_opt.l_linger = 0;
66 70
67 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)))
68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 72 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 } 73 }
70 74
71 { 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
72 int val = IPTOS_LOWDELAY; 91 val = IPTOS_LOWDELAY;
73
74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 92 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
75 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 93 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
76 } 94#endif
77 95
78 { 96#ifdef TCP_NODELAY
79 int val = 1; 97 val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 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
83 } 127 }
84 128
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
104 {
105 int bufsize = 65535; /*Supposed absolute upper limit */
106 int oldbufsize;
107 int buflen = sizeof (int);
108
109 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 129 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
110 LOG (llevError, "InitConnection: Error on fcntl.\n"); 130 LOG (llevError, "InitConnection: Error on fcntl.\n");
111 131
112 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 132 state = ST_SETUP;
113 oldbufsize = 0;
114
115 if (oldbufsize < bufsize)
116 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
117 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
118
119 buflen = sizeof (oldbufsize);
120 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
121 }
122
123 mapmode = Map0Cmd; 133 mapmode = Map1aCmd;
124 darkness = 1;
125 mapx = 11; 134 mapx = 11;
126 mapy = 11; 135 mapy = 11;
127 itemcmd = 1; /* Default is version item1 command */ 136 itemcmd = 1; /* Default is version item1 command */
128 137 max_rate = 200000 / (1000000 / MAX_TIME); // ~2mbit is assumed per default
129 faces_sent = salloc0<uint8> (nrofpixmaps);
130 138
131 /* 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
132 * 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
133 * face information. 141 * face information.
134 */ 142 */
135 faces_sent[0] = NS_FACESENT_FACE; 143 faces_sent[0] = true;
144 fx_want [FT_FACE] = true; // all clients must support image faces
136 145
137 // socket I/O is low priority 146 socket_ev.set (fd, EV_READ);
138 // we prefer to have the server run instead of handling client requests 147 socket_ev.prio (2); // one higher than the ticker priority
139 socket_ev.prio (PE_PRIO_NORMAL + 1);
140 socket_ev.fd (fd); 148 socket_ev.start ();
141 socket_ev.poll (PE_R);
142
143 // command handling is even lower priority
144 // that way no client can monopolise the server
145 cmd_ev.prio (PE_PRIO_NORMAL + 2);
146 149
147 // initialisation done, kick it! 150 // initialisation done, kick it!
148 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 151 INVOKE_CLIENT (CONNECT, this);
152
149 flush (); 153 flush ();
150 154
151#if 0//TODO 155 reset_stats ();
152 socket_info.nconns++; 156
153 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 157 clients.insert (this);
154 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
155#endif
156} 158}
157 159
158client::~client () 160client::~client ()
159{ 161{
160 if (pl) 162 clients.erase (this);
161 pl->socket = 0;
162 163
163 if (fd >= 0) 164 mapinfo_queue_clear ();
164 close (fd);
165
166 sfree<uint8> (faces_sent, nrofpixmaps);
167 free (stats.range); 165 free (stats.range);
168 free (stats.title); 166 free (stats.title);
169 free (host); 167 free (host);
170} 168}
171 169
172void 170void
173client::destroy () 171client::do_destroy ()
174{ 172{
175 destroyed = true; 173 INVOKE_CLIENT (CLIENT_DESTROY, this);
174 attachable::do_destroy ();
176 175
176 if (pl)
177 pl->disconnect ();
178
179 if (fd >= 0)
180 {
181 send_packet ("goodbye");
182 flush ();
183
184 close (fd);
185 }
186
187 state = ST_DEAD;
188
177 socket_ev.suspend (); 189 socket_ev.stop ();
178 cmd_ev.suspend ();
179}
180 190
181/** This sets up the socket and reads all the image information into memory. */ 191 refcnt_dec (); // socket no longer open
192}
193
182void 194void
183init_ericserver (void) 195client::reset_stats ()
184{ 196{
185 cst_tot.time_start = time (NULL); 197 /* we need to clear these to -1 and not zero - otherwise,
186 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;
187 204
188 LOG (llevDebug, "Initialize new client/server data\n"); 205 for (int i = 0; i < NROFATTACKS; i++)
206 last_resist[i] = -1;
189 207
190 read_client_images (); 208 last_weapon_sp = -1;
191} 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;
192 219
193 220 static living zero_living;
194/******************************************************************************* 221 last_stats = zero_living;
195 *
196 * Start of functions dealing with freeing of the data.
197 *
198 ******************************************************************************/
199
200/** Free's all the memory that ericserver allocates. */
201void
202free_all_newserver (void)
203{
204 LOG (llevDebug, "Freeing all new client/server information.\n");
205 free_socket_images ();
206}
207
208/** Sends the 'goodbye' command to the player, and closes connection. */
209void
210final_free_player (player *pl)
211{
212 free_player (pl);
213} 222}
214 223
215client * 224client *
216client::create (int fd, const char *peername) 225client::create (int fd, const char *peername)
217{ 226{
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); 227 client *ns = new client (dup (fd), peername);
226 clients.push_back (ns);
227 228
228 ns->instantiate (); // effectively a nop right now 229 ns->instantiate (); // effectively a nop right now
229 230
230 INVOKE_CLIENT (CONNECT, ns);
231
232 return ns; 231 return ns;
233 }
234} 232}
235 233

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