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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 1.56 by root, Wed Apr 2 11:13:57 2008 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 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
8 it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version. 11 * (at your 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 GNU General Public License
18 along with this program; if not, write to the Free Software 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 *
20 21 * The authors can be reached via e-mail to <support@deliantra.net>
21 The author can be reached via e-mail to <crossfire@schmorp.de>
22*/ 22 */
23 23
24/** 24/**
25 * \file 25 * \file
26 * Socket general functions 26 * Socket general functions
27 * 27 *
… …
45#include <unistd.h> 45#include <unistd.h>
46#include <arpa/inet.h> 46#include <arpa/inet.h>
47 47
48#include <algorithm> 48#include <algorithm>
49 49
50// use relatively small values, as we do not expect to receive much,
51// and we do userspace write buffering
52// 8kb limits throughput to roughly 66kb/s
53#define SOCKET_RCVBUF 8192
54#define SOCKET_SNDBUF 16384
55
50sockvec clients; 56sockvec clients;
51 57
52/** 58/**
53 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
54 * socket setup is handled elsewhere. We do send a version to the 60 * socket setup is handled elsewhere. We do send a version to the
55 * client. 61 * client.
56 */ 62 */
57client::client (int fd, const char *peername) 63client::client (int fd, const char *peername)
58: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
59 socket_ev (this, &client::socket_cb), 65 socket_ev (this, &client::socket_cb)
60 cmd_ev (this, &client::cmd_cb),
61 cc_inv (this), cc_other (this)
62{ 66{
67 refcnt_inc (); // the socket is an external reference
68
69 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
70
63 { 71 {
64 struct linger linger_opt; 72 struct linger linger_opt;
65 73
66 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
67 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
68 76
69 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 77 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
70 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
71 } 79 }
72 80
73 { 81 {
82 int val;
83
84#ifdef SO_RCVBUF
85 val = SOCKET_RCVBUF;
86 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
87 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
88#endif
89
90#ifdef SO_SNDBUF
91 val = SOCKET_SNDBUF;
92 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
93 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
94#endif
95
96#ifdef IP_TOS
74 int val = IPTOS_LOWDELAY; 97 val = IPTOS_LOWDELAY;
75
76 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
77 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 99 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
78 } 100#endif
79 101
80 { 102#ifdef TCP_NODELAY
81 int val = 1; 103 val = 1;
82
83 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 104 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
84 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 105 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
106#endif
107
108 // set some very aggressive keepalive parameters
109#ifdef TCP_KEEPIDLE
110 val = 1;
111 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
112 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
113#endif
114
115#ifdef TCP_KEEPCNT
116 val = 3;
117 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
118 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
119#endif
120
121#ifdef TCP_KEEPINTVL
122 val = 1;
123 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
124 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
125#endif
126
127 // try to find the mss value in use
128#ifdef TCP_MAXSEG
129 socklen_t sl = sizeof (val);
130 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
131 mss = val;
132#endif
85 } 133 }
86 134
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) 135 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
112 LOG (llevError, "InitConnection: Error on fcntl.\n"); 136 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 }
124 137
125 state = ST_SETUP; 138 state = ST_SETUP;
126 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
127 darkness = 1; 140 darkness = 1;
128 mapx = 11; 141 mapx = 11;
129 mapy = 11; 142 mapy = 11;
130 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
131 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
132 faces_sent = salloc0<uint8> (nrofpixmaps);
133 145
134 /* 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
135 * 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
136 * face information. 148 * face information.
137 */ 149 */
138 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
151 fx_want [FT_FACE] = true; // all clients must support image faces
139 152
140 // socket I/O is low priority 153 socket_ev.set (fd, EV_READ);
141 // we prefer to have the server run instead of handling client requests 154 socket_ev.prio (2); // one higher than the ticker priority
142 socket_ev.prio (PE_PRIO_NORMAL + 1);
143 socket_ev.fd (fd); 155 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);
149 156
150 // initialisation done, kick it! 157 // initialisation done, kick it!
151 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 158 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
152 flush (); 159 flush ();
153 160
154 // clients are externally referenced by the socket 161 reset_stats ();
155 refcnt_inc ();
156 clients.push_back (this);
157 162
158#if 0//TODO 163 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} 164}
164 165
165client::~client () 166client::~client ()
166{ 167{
167 sfree<uint8> (faces_sent, nrofpixmaps); 168 clients.erase (this);
169
170 mapinfo_queue_clear ();
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::do_destroy () 177client::do_destroy ()
175{ 178{
176 attachable::do_destroy (); 179 attachable::do_destroy ();
177 180
178 sockvec::iterator i = find (clients.begin (), clients.end (), this);
179 if (i != clients.end ())
180 clients.erase (i);
181
182 if (pl) 181 if (pl)
183 pl->disconnect (); 182 pl->disconnect ();
184 183
185 if (fd >= 0) 184 if (fd >= 0)
185 {
186 send_packet ("goodbye");
187 flush ();
188
186 close (fd); 189 close (fd);
190 }
187 191
188 state = ST_DEAD; 192 state = ST_DEAD;
189 193
190 socket_ev.suspend (); 194 socket_ev.stop ();
191 cmd_ev.suspend ();
192 195
193 // socket now longer references us 196 refcnt_dec (); // socket no longer open
194 refcnt_dec ();
195} 197}
196 198
197/** This sets up the socket and reads all the image information into memory. */
198void 199void
199init_ericserver (void) 200client::reset_stats ()
200{ 201{
201 cst_tot.time_start = time (NULL); 202 /* we need to clear these to -1 and not zero - otherwise,
202 cst_lst.time_start = time (NULL); 203 * if a player quits and starts a new character, we wont
204 * send new values to the client, as things like exp start
205 * at zero.
206 */
207 for (int i = 0; i < NUM_SKILLS; i++)
208 last_skill_exp[i] = -1;
203 209
204 LOG (llevDebug, "Initialize new client/server data\n"); 210 for (int i = 0; i < NROFATTACKS; i++)
211 last_resist[i] = -1;
205 212
206 read_client_images (); 213 last_weapon_sp = -1;
207} 214 last_level = -1;
215 last_stats.exp = -1;
216 last_weight = (uint32) - 1;
217 last_flags = 0;
218 last_weight = 0;
219 last_weight_limit = 0;
220 last_path_attuned = 0;
221 last_path_repelled = 0;
222 last_path_denied = 0;
223 last_speed = 0;
224 last_flags = 0;
208 225
209 226 static living zero_living;
210/******************************************************************************* 227 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} 228}
223 229
224client * 230client *
225client::create (int fd, const char *peername) 231client::create (int fd, const char *peername)
226{ 232{
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); 233 client *ns = new client (dup (fd), peername);
235
236 ns->instantiate (); // effectively a nop right now 234 ns->instantiate (); // effectively a nop right now
237
238 INVOKE_CLIENT (CONNECT, ns); 235 INVOKE_CLIENT (CONNECT, ns);
239
240 return ns; 236 return ns;
241 }
242} 237}
243 238

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