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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.36 by pippijn, Sat Jan 20 13:47:17 2007 UTC vs.
Revision 1.52 by root, Mon Oct 1 01:09:10 2007 UTC

1/* 1/*
2 * CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3 * 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5 * Copyright (C) 2001 Mark Wedel 5 * Copyright (©) 2001,2007 Mark Wedel
6 * Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * Crossfire TRT is free software: you can redistribute it and/or modify
9 * 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
10 * the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version. 11 * (at your option) any later version.
12 * 12 *
13 * 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,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details. 16 * GNU General Public License for more details.
17 * 17 *
18 * 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
19 * along with this program; if not, write to the Free Software 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * 20 *
22 * The author can be reached via e-mail to <crossfire@schmorp.de> 21 * The authors can be reached via e-mail to <crossfire@schmorp.de>
23 */ 22 */
24 23
25/** 24/**
26 * \file 25 * \file
27 * Socket general functions 26 * Socket general functions
… …
46#include <unistd.h> 45#include <unistd.h>
47#include <arpa/inet.h> 46#include <arpa/inet.h>
48 47
49#include <algorithm> 48#include <algorithm>
50 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
51sockvec clients; 56sockvec clients;
52 57
53/** 58/**
54 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
55 * 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
56 * client. 61 * client.
57 */ 62 */
58client::client (int fd, const char *peername) 63client::client (int fd, const char *peername)
59: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
60 socket_ev (this, &client::socket_cb), 65 socket_ev (this, &client::socket_cb)
61 cmd_ev (this, &client::cmd_cb),
62 cc_inv (this), cc_other (this)
63{ 66{
64 refcnt_inc (); // the socket is an external reference 67 refcnt_inc (); // the socket is an external reference
68
69 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
65 70
66 { 71 {
67 struct linger linger_opt; 72 struct linger linger_opt;
68 73
69 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
70 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
71 76
72 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)))
73 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
74 } 79 }
75 80
76 { 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
77 int val = IPTOS_LOWDELAY; 97 val = IPTOS_LOWDELAY;
78
79 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
80 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 99 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
81 } 100#endif
82 101
83 { 102#ifdef TCP_NODELAY
84 int val = 1; 103 val = 1;
85
86 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 104 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
87 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
88 } 133 }
89
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
108 134
109 { 135 {
110 int bufsize = 65535; /*Supposed absolute upper limit */ 136 int bufsize = 65535; /*Supposed absolute upper limit */
111 int oldbufsize; 137 int oldbufsize;
112 int buflen = sizeof (int); 138 int buflen = sizeof (int);
… …
129 mapmode = Map0Cmd; 155 mapmode = Map0Cmd;
130 darkness = 1; 156 darkness = 1;
131 mapx = 11; 157 mapx = 11;
132 mapy = 11; 158 mapy = 11;
133 itemcmd = 1; /* Default is version item1 command */ 159 itemcmd = 1; /* Default is version item1 command */
134 160 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
135 faces_sent = salloc0<uint8> (nrofpixmaps);
136 161
137 /* Do this so we don't send a face command for the client for 162 /* 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 163 * this face. Face 0 is sent to the client to say clear
139 * face information. 164 * face information.
140 */ 165 */
141 faces_sent[0] = NS_FACESENT_FACE; 166 faces_sent[0] = true;
167 fx_want [FT_FACE] = true; // all clients must support image faces
142 168
143 // socket I/O is low priority
144 // we prefer to have the server run instead of handling client requests
145 socket_ev.prio (PE_PRIO_NORMAL + 1); 169 socket_ev.prio (PE_PRIO_HIGH);
146 socket_ev.fd (fd); 170 socket_ev.fd (fd);
147 socket_ev.poll (PE_R); 171 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);
152 172
153 // initialisation done, kick it! 173 // initialisation done, kick it!
154 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 174 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
155 flush (); 175 flush ();
156 176
… …
161 181
162client::~client () 182client::~client ()
163{ 183{
164 clients.erase (this); 184 clients.erase (this);
165 185
166 sfree<uint8> (faces_sent, nrofpixmaps); 186 mapinfo_queue_clear ();
167 free (stats.range); 187 free (stats.range);
168 free (stats.title); 188 free (stats.title);
169 free (host); 189 free (host);
170} 190}
171 191
… …
186 } 206 }
187 207
188 state = ST_DEAD; 208 state = ST_DEAD;
189 209
190 socket_ev.suspend (); 210 socket_ev.suspend ();
191 cmd_ev.suspend ();
192 211
193 refcnt_dec (); // socket no longer open 212 refcnt_dec (); // socket no longer open
194} 213}
195 214
196void 215void
… …
216 last_weight_limit = 0; 235 last_weight_limit = 0;
217 last_path_attuned = 0; 236 last_path_attuned = 0;
218 last_path_repelled = 0; 237 last_path_repelled = 0;
219 last_path_denied = 0; 238 last_path_denied = 0;
220 last_speed = 0; 239 last_speed = 0;
221 flags = 0; 240 last_flags = 0;
222 241
223 static living zero_living; 242 static living zero_living;
224 last_stats = zero_living; 243 last_stats = zero_living;
225} 244}
226 245
227/** This sets up the socket and reads all the image information into memory. */
228void
229init_ericserver (void)
230{
231 cst_tot.time_start = time (NULL);
232 cst_lst.time_start = time (NULL);
233
234 LOG (llevDebug, "Initialize new client/server data\n");
235
236 read_client_images ();
237}
238
239
240/*******************************************************************************
241 *
242 * Start of functions dealing with freeing of the data.
243 *
244 ******************************************************************************/
245
246/** Free's all the memory that ericserver allocates. */
247void
248free_all_newserver (void)
249{
250 LOG (llevDebug, "Freeing all new client/server information.\n");
251 free_socket_images ();
252}
253
254client * 246client *
255client::create (int fd, const char *peername) 247client::create (int fd, const char *peername)
256{ 248{
257 if (checkbanned (NULL, peername))
258 {
259 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
260 return 0;
261 }
262 else
263 {
264 client *ns = new client (dup (fd), peername); 249 client *ns = new client (dup (fd), peername);
265
266 ns->instantiate (); // effectively a nop right now 250 ns->instantiate (); // effectively a nop right now
267
268 INVOKE_CLIENT (CONNECT, ns); 251 INVOKE_CLIENT (CONNECT, ns);
269
270 return ns; 252 return ns;
271 }
272} 253}
273 254

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