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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 1.62 by root, Mon Oct 12 14:00:59 2009 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 (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra 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 * Deliantra is free software: you can redistribute it and/or modify it under
8 it under the terms of the GNU General Public License as published by 9 * 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 10 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 11 * 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 Affero GNU General Public License
18 along with this program; if not, write to the Free Software 19 * and the GNU General Public License along with this program. If not, see
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * <http://www.gnu.org/licenses/>.
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 <support@deliantra.net>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Socket general functions 27 * Socket general functions
27 * 28 *
… …
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>
47 48
49#include <algorithm>
50
51// use relatively small values, as we do not expect to receive much,
52// and we do userspace write buffering
53// 8kb limits throughput to roughly 66kb/s
54#define SOCKET_RCVBUF 8192
55#define SOCKET_SNDBUF 16384
56
48sockvec clients; 57sockvec clients;
49 58
50/** 59/**
51 * Initializes a connection. Really, it just sets up the data structure, 60 * Initializes a connection. Really, it just sets up the data structure,
52 * socket setup is handled elsewhere. We do send a version to the 61 * socket setup is handled elsewhere. We do send a version to the
53 * client. 62 * client.
54 */ 63 */
55client::client (int fd, const char *peername) 64client::client (int fd, const char *peername)
56: fd (fd), host (strdup (peername)), 65: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client::socket_cb), 66 socket_ev (this, &client::socket_cb)
58 cmd_ev (this, &client::cmd_cb),
59 cc_inv (this), cc_other (this)
60{ 67{
68 refcnt_inc (); // the socket is an external reference
69
70 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
71
72 socket_timeout = 16.;
73
61 { 74 {
62 struct linger linger_opt; 75 struct linger linger_opt;
63 76
64 linger_opt.l_onoff = 0; 77 linger_opt.l_onoff = 0;
65 linger_opt.l_linger = 0; 78 linger_opt.l_linger = 0;
66 79
67 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 80 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 81 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 } 82 }
70 83
71 { 84 {
85 int val;
86
87#ifdef SO_RCVBUF
88 val = SOCKET_RCVBUF;
89 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
90 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
91#endif
92
93#ifdef SO_SNDBUF
94 val = SOCKET_SNDBUF;
95 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
96 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
97#endif
98
99#ifdef IP_TOS
72 int val = IPTOS_LOWDELAY; 100 val = IPTOS_LOWDELAY;
73
74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 101 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
75 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 102 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
76 } 103#endif
77 104
78 { 105#ifdef TCP_NODELAY
79 int val = 1; 106 val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 107 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 108 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
109#endif
110
111 // set some very aggressive keepalive parameters
112#ifdef TCP_KEEPIDLE
113 val = 1;
114 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
115 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
116#endif
117
118#ifdef TCP_KEEPCNT
119 val = 3;
120 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
121 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
122#endif
123
124#ifdef TCP_KEEPINTVL
125 val = 1;
126 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
127 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
128#endif
129
130 // try to find the mss value in use
131#ifdef TCP_MAXSEG
132 socklen_t sl = sizeof (val);
133 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
134 mss = val;
135#endif
83 } 136 }
84 137
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) 138 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
110 LOG (llevError, "InitConnection: Error on fcntl.\n"); 139 LOG (llevError, "InitConnection: Error on fcntl.\n");
111 140
112 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 141 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; 142 mapmode = Map1aCmd;
124 darkness = 1;
125 mapx = 11; 143 mapx = 11;
126 mapy = 11; 144 mapy = 11;
127 itemcmd = 1; /* Default is version item1 command */ 145 itemcmd = 1; /* Default is version item1 command */
128 146 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
129 faces_sent = salloc0<uint8> (nrofpixmaps);
130 147
131 /* Do this so we don't send a face command for the client for 148 /* 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 149 * this face. Face 0 is sent to the client to say clear
133 * face information. 150 * face information.
134 */ 151 */
135 faces_sent[0] = NS_FACESENT_FACE; 152 faces_sent[0] = true;
153 fx_want [FT_FACE] = true; // all clients must support image faces
136 154
137 // socket I/O is low priority 155 socket_ev.set (fd, EV_READ);
138 // we prefer to have the server run instead of handling client requests 156 socket_ev.prio (2); // one higher than the ticker priority
139 socket_ev.prio (PE_PRIO_NORMAL + 1);
140 socket_ev.fd (fd); 157 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);
146 158
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) 172 mapinfo_queue_clear ();
164 close (fd);
165
166 sfree<uint8> (faces_sent, nrofpixmaps);
167 free (stats.range); 173 free (stats.range);
168 free (stats.title); 174 free (stats.title);
169 free (host); 175 free (host);
170} 176}
171 177
172void 178void
173client::destroy () 179client::do_destroy ()
174{ 180{
175 destroyed = true; 181 attachable::do_destroy ();
176 182
183 if (pl)
184 pl->disconnect ();
185
186 if (fd >= 0)
187 {
188 send_packet ("goodbye");
189 flush ();
190
191 close (fd);
192 }
193
194 state = ST_DEAD;
195
177 socket_ev.suspend (); 196 socket_ev.stop ();
178 cmd_ev.suspend ();
179}
180 197
181/** This sets up the socket and reads all the image information into memory. */ 198 refcnt_dec (); // socket no longer open
199}
200
182void 201void
183init_ericserver (void) 202client::reset_stats ()
184{ 203{
185 cst_tot.time_start = time (NULL); 204 /* we need to clear these to -1 and not zero - otherwise,
186 cst_lst.time_start = time (NULL); 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;
187 211
188 LOG (llevDebug, "Initialize new client/server data\n"); 212 for (int i = 0; i < NROFATTACKS; i++)
213 last_resist[i] = -1;
189 214
190 read_client_images (); 215 last_weapon_sp = -1;
191} 216 last_level = -1;
217 last_stats.exp = -1;
218 last_flags = 0;
219 last_weight = -1;
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;
192 226
193 227 static living zero_living;
194/******************************************************************************* 228 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} 229}
214 230
215client * 231client *
216client::create (int fd, const char *peername) 232client::create (int fd, const char *peername)
217{ 233{
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); 234 client *ns = new client (dup (fd), peername);
226 clients.push_back (ns);
227
228 ns->instantiate (); // effectively a nop right now 235 ns->instantiate (); // effectively a nop right now
229
230 INVOKE_CLIENT (CONNECT, ns); 236 INVOKE_CLIENT (CONNECT, ns);
231
232 return ns; 237 return ns;
233 }
234} 238}
235 239

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