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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.31 by root, Mon Dec 25 11:25:50 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 *
… …
45#include <unistd.h> 46#include <unistd.h>
46#include <arpa/inet.h> 47#include <arpa/inet.h>
47 48
48#include <algorithm> 49#include <algorithm>
49 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
50sockvec clients; 57sockvec clients;
51 58
52/** 59/**
53 * Initializes a connection. Really, it just sets up the data structure, 60 * Initializes a connection. Really, it just sets up the data structure,
54 * 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
55 * client. 62 * client.
56 */ 63 */
57client::client (int fd, const char *peername) 64client::client (int fd, const char *peername)
58: fd (fd), host (strdup (peername)), 65: fd (fd), host (strdup (peername)),
59 socket_ev (this, &client::socket_cb), 66 socket_ev (this, &client::socket_cb)
60 cmd_ev (this, &client::cmd_cb),
61 cc_inv (this), cc_other (this)
62{ 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
63 { 74 {
64 struct linger linger_opt; 75 struct linger linger_opt;
65 76
66 linger_opt.l_onoff = 0; 77 linger_opt.l_onoff = 0;
67 linger_opt.l_linger = 0; 78 linger_opt.l_linger = 0;
68 79
69 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)))
70 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 81 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
71 } 82 }
72 83
73 { 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
74 int val = IPTOS_LOWDELAY; 100 val = IPTOS_LOWDELAY;
75
76 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 101 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
77 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 102 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
78 } 103#endif
79 104
80 { 105#ifdef TCP_NODELAY
81 int val = 1; 106 val = 1;
82
83 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 107 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
84 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
85 } 136 }
86 137
87#ifdef __linux__
88 {
89 int val;
90
91 // set some very aggressive keepalive parameters
92 val = 10;
93 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
94 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
95
96 val = 5;
97 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
98 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
99
100 val = 1;
101 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
102 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
103 }
104#endif
105
106 {
107 int bufsize = 65535; /*Supposed absolute upper limit */
108 int oldbufsize;
109 int buflen = sizeof (int);
110
111 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 138 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
112 LOG (llevError, "InitConnection: Error on fcntl.\n"); 139 LOG (llevError, "InitConnection: Error on fcntl.\n");
113
114 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
115 oldbufsize = 0;
116
117 if (oldbufsize < bufsize)
118 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
119 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
120
121 buflen = sizeof (oldbufsize);
122 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
123 }
124 140
125 state = ST_SETUP; 141 state = ST_SETUP;
126 mapmode = Map0Cmd; 142 mapmode = Map1aCmd;
127 darkness = 1;
128 mapx = 11; 143 mapx = 11;
129 mapy = 11; 144 mapy = 11;
130 itemcmd = 1; /* Default is version item1 command */ 145 itemcmd = 1; /* Default is version item1 command */
131 146 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
132 faces_sent = salloc0<uint8> (nrofpixmaps);
133 147
134 /* 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
135 * 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
136 * face information. 150 * face information.
137 */ 151 */
138 faces_sent[0] = NS_FACESENT_FACE; 152 faces_sent[0] = true;
153 fx_want [FT_FACE] = true; // all clients must support image faces
139 154
140 // socket I/O is low priority 155 socket_ev.set (fd, EV_READ);
141 // we prefer to have the server run instead of handling client requests 156 socket_ev.prio (2); // one higher than the ticker priority
142 socket_ev.prio (PE_PRIO_NORMAL + 1);
143 socket_ev.fd (fd); 157 socket_ev.start ();
144 socket_ev.poll (PE_R);
145
146 // command handling is even lower priority
147 // that way no client can monopolise the server
148 cmd_ev.prio (PE_PRIO_NORMAL + 2);
149 158
150 // initialisation done, kick it! 159 // initialisation done, kick it!
151 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);
152 flush (); 161 flush ();
153 162
154 // clients are externally referenced by the socket 163 reset_stats ();
155 refcnt_inc ();
156 clients.push_back (this);
157 164
158#if 0//TODO 165 clients.insert (this);
159 socket_info.nconns++;
160 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
161 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
162#endif
163} 166}
164 167
165client::~client () 168client::~client ()
166{ 169{
167 sfree<uint8> (faces_sent, nrofpixmaps); 170 clients.erase (this);
171
172 mapinfo_queue_clear ();
168 free (stats.range); 173 free (stats.range);
169 free (stats.title); 174 free (stats.title);
170 free (host); 175 free (host);
171} 176}
172 177
173void 178void
174client::do_destroy () 179client::do_destroy ()
175{ 180{
176 attachable::do_destroy (); 181 attachable::do_destroy ();
177 182
178 sockvec::iterator i = find (clients.begin (), clients.end (), this);
179 if (i != clients.end ())
180 clients.erase (i);
181
182 if (pl) 183 if (pl)
183 pl->disconnect (); 184 pl->disconnect ();
184 185
185 if (fd >= 0) 186 if (fd >= 0)
187 {
188 send_packet ("goodbye");
189 flush ();
190
186 close (fd); 191 close (fd);
192 }
187 193
188 state = ST_DEAD; 194 state = ST_DEAD;
189 195
190 socket_ev.suspend (); 196 socket_ev.stop ();
191 cmd_ev.suspend ();
192 197
193 // socket now longer references us 198 refcnt_dec (); // socket no longer open
194 refcnt_dec ();
195} 199}
196 200
197/** This sets up the socket and reads all the image information into memory. */
198void 201void
199init_ericserver (void) 202client::reset_stats ()
200{ 203{
201 cst_tot.time_start = time (NULL); 204 /* we need to clear these to -1 and not zero - otherwise,
202 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;
203 211
204 LOG (llevDebug, "Initialize new client/server data\n"); 212 for (int i = 0; i < NROFATTACKS; i++)
213 last_resist[i] = -1;
205 214
206 read_client_images (); 215 last_weapon_sp = -1;
207} 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;
208 226
209 227 static living zero_living;
210/******************************************************************************* 228 last_stats = zero_living;
211 *
212 * Start of functions dealing with freeing of the data.
213 *
214 ******************************************************************************/
215
216/** Free's all the memory that ericserver allocates. */
217void
218free_all_newserver (void)
219{
220 LOG (llevDebug, "Freeing all new client/server information.\n");
221 free_socket_images ();
222} 229}
223 230
224client * 231client *
225client::create (int fd, const char *peername) 232client::create (int fd, const char *peername)
226{ 233{
227 if (checkbanned (NULL, peername))
228 {
229 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
230 return 0;
231 }
232 else
233 {
234 client *ns = new client (dup (fd), peername); 234 client *ns = new client (dup (fd), peername);
235
236 ns->instantiate (); // effectively a nop right now 235 ns->instantiate (); // effectively a nop right now
237
238 INVOKE_CLIENT (CONNECT, ns); 236 INVOKE_CLIENT (CONNECT, ns);
239
240 return ns; 237 return ns;
241 }
242} 238}
243 239

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