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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.26 by root, Wed Dec 20 09:14:22 2006 UTC vs.
Revision 1.48 by root, Sat Jun 9 23:18:17 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3 3 *
4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT 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 * Crossfire TRT is free software; you can redistribute it and/or modify it
8 it under the terms of the GNU General Public License as published by 9 * under the terms of the GNU General Public License as published by the Free
9 the Free Software Foundation; either version 2 of the License, or 10 * Software Foundation; either version 2 of the License, or (at your option)
10 (at your option) any later version. 11 * 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, but
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 GNU General Public License for more details. 16 * 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 along
18 along with this program; if not, write to the Free Software 19 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 <crossfire@schmorp.de>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Socket general functions 27 * Socket general functions
27 * 28 *
… …
29 * 30 *
30 * Mainly deals with initialization and higher level socket 31 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 32 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c 33 * The reading of data is handled in ericserver.c
33 */ 34 */
34
35 35
36#include <global.h> 36#include <global.h>
37#include <sproto.h> 37#include <sproto.h>
38#include <sys/types.h> 38#include <sys/types.h>
39#include <sys/time.h> 39#include <sys/time.h>
… …
44#include <netdb.h> 44#include <netdb.h>
45 45
46#include <unistd.h> 46#include <unistd.h>
47#include <arpa/inet.h> 47#include <arpa/inet.h>
48 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
49sockvec clients; 57sockvec clients;
50 58
51/** 59/**
52 * Initializes a connection. Really, it just sets up the data structure, 60 * Initializes a connection. Really, it just sets up the data structure,
53 * 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
54 * client. 62 * client.
55 */ 63 */
56client::client (int fd, const char *peername) 64client::client (int fd, const char *peername)
57: fd (fd), host (strdup (peername)), 65: fd (fd), host (strdup (peername)),
58 socket_ev (this, &client::socket_cb), 66 socket_ev (this, &client::socket_cb),
59 cmd_ev (this, &client::cmd_cb), 67 cmd_ev (this, &client::cmd_cb)
60 cc_inv (this), cc_other (this)
61{ 68{
69 refcnt_inc (); // the socket is an external reference
70
71 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
72
62 { 73 {
63 struct linger linger_opt; 74 struct linger linger_opt;
64 75
65 linger_opt.l_onoff = 0; 76 linger_opt.l_onoff = 0;
66 linger_opt.l_linger = 0; 77 linger_opt.l_linger = 0;
67 78
68 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 79 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
69 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 80 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
70 } 81 }
71 82
72 { 83 {
84 int val;
85
86#ifdef SO_RCVBUF
87 val = SOCKET_RCVBUF;
88 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
89 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
90#endif
91
92#ifdef SO_SNDBUF
93 val = SOCKET_SNDBUF;
94 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
95 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
96#endif
97
98#ifdef IP_TOS
73 int val = IPTOS_LOWDELAY; 99 val = IPTOS_LOWDELAY;
74
75 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 100 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
76 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 101 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
77 } 102#endif
78 103
79 { 104#ifdef TCP_NODELAY
80 int val = 1; 105 val = 1;
81
82 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 106 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
83 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 107 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
108#endif
109
110 // set some very aggressive keepalive parameters
111#ifdef TCP_KEEPIDLE
112 val = 1;
113 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
114 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
115#endif
116
117#ifdef TCP_KEEPCNT
118 val = 3;
119 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
120 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
121#endif
122
123#ifdef TCP_KEEPINTVL
124 val = 1;
125 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
126 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
127#endif
128
129 // try to find the mss value in use
130#ifdef TCP_MAXSEG
131 socklen_t sl = sizeof (val);
132 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
133 mss = val;
134#endif
84 } 135 }
85
86#ifdef __linux__
87 {
88 int val;
89
90 // set some very aggressive keepalive parameters
91 val = 10;
92 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
93 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
94
95 val = 5;
96 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
97 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
98
99 val = 1;
100 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
101 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
102 }
103#endif
104 136
105 { 137 {
106 int bufsize = 65535; /*Supposed absolute upper limit */ 138 int bufsize = 65535; /*Supposed absolute upper limit */
107 int oldbufsize; 139 int oldbufsize;
108 int buflen = sizeof (int); 140 int buflen = sizeof (int);
… …
119 151
120 buflen = sizeof (oldbufsize); 152 buflen = sizeof (oldbufsize);
121 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 153 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
122 } 154 }
123 155
156 state = ST_SETUP;
124 mapmode = Map0Cmd; 157 mapmode = Map0Cmd;
125 darkness = 1; 158 darkness = 1;
126 status = Ns_Add;
127 mapx = 11; 159 mapx = 11;
128 mapy = 11; 160 mapy = 11;
129 itemcmd = 1; /* Default is version item1 command */ 161 itemcmd = 1; /* Default is version item1 command */
130 162 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
131 faces_sent = salloc<uint8> (nrofpixmaps, 0);
132 163
133 /* Do this so we don't send a face command for the client for 164 /* Do this so we don't send a face command for the client for
134 * this face. Face 0 is sent to the client to say clear 165 * this face. Face 0 is sent to the client to say clear
135 * face information. 166 * face information.
136 */ 167 */
137 faces_sent[0] = NS_FACESENT_FACE; 168 faces_sent[0] = true;
138 169
139 // socket I/O is low priority
140 // we prefer to have the server run instead of handling client requests
141 socket_ev.prio (PE_PRIO_NORMAL + 1); 170 socket_ev.prio (PE_PRIO_NORMAL);
142 socket_ev.fd (fd); 171 socket_ev.fd (fd);
143 socket_ev.poll (PE_R); 172 socket_ev.poll (PE_R);
144 173
145 // command handling is even lower priority
146 // that way no client can monopolise the server
147 cmd_ev.prio (PE_PRIO_NORMAL + 2); 174 cmd_ev.prio (PE_PRIO_NORMAL);
148 175
149 // initialisation done, kick it! 176 // initialisation done, kick it!
150 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 177 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
151 flush (); 178 flush ();
152 179
153#if 0//TODO 180 reset_stats ();
154 socket_info.nconns++; 181
155 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 182 clients.insert (this);
156 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
157#endif
158} 183}
159 184
160client::~client () 185client::~client ()
161{ 186{
162 if (pl) 187 clients.erase (this);
163 pl->socket = 0;
164 188
165 if (fd >= 0)
166 close (fd);
167
168 sfree<uint8> (faces_sent, nrofpixmaps);
169 free (stats.range); 189 free (stats.range);
170 free (stats.title); 190 free (stats.title);
171 free (host); 191 free (host);
172} 192}
173 193
174void 194void
175client::destroy () 195client::do_destroy ()
176{ 196{
177 status = Ns_Dead; 197 attachable::do_destroy ();
198
199 if (pl)
200 pl->disconnect ();
201
202 if (fd >= 0)
203 {
204 send_packet ("goodbye");
205 flush ();
206
207 close (fd);
208 }
209
210 state = ST_DEAD;
211
178 socket_ev.suspend (); 212 socket_ev.suspend ();
179 cmd_ev.suspend (); 213 cmd_ev.suspend ();
180}
181 214
182/** This sets up the socket and reads all the image information into memory. */ 215 refcnt_dec (); // socket no longer open
216}
217
183void 218void
184init_ericserver (void) 219client::reset_stats ()
185{ 220{
186 cst_tot.time_start = time (NULL); 221 /* we need to clear these to -1 and not zero - otherwise,
187 cst_lst.time_start = time (NULL); 222 * if a player quits and starts a new character, we wont
223 * send new values to the client, as things like exp start
224 * at zero.
225 */
226 for (int i = 0; i < NUM_SKILLS; i++)
227 last_skill_exp[i] = -1;
188 228
189 LOG (llevDebug, "Initialize new client/server data\n"); 229 for (int i = 0; i < NROFATTACKS; i++)
230 last_resist[i] = -1;
190 231
191 read_client_images (); 232 last_weapon_sp = -1;
192} 233 last_level = -1;
234 last_stats.exp = -1;
235 last_weight = (uint32) - 1;
236 last_flags = 0;
237 last_weight = 0;
238 last_weight_limit = 0;
239 last_path_attuned = 0;
240 last_path_repelled = 0;
241 last_path_denied = 0;
242 last_speed = 0;
243 last_flags = 0;
193 244
245 static living zero_living;
246 last_stats = zero_living;
247}
194 248
195/******************************************************************************* 249/*******************************************************************************
196 * 250 *
197 * Start of functions dealing with freeing of the data. 251 * Start of functions dealing with freeing of the data.
198 * 252 *
… …
204{ 258{
205 LOG (llevDebug, "Freeing all new client/server information.\n"); 259 LOG (llevDebug, "Freeing all new client/server information.\n");
206 free_socket_images (); 260 free_socket_images ();
207} 261}
208 262
209/** Sends the 'goodbye' command to the player, and closes connection. */ 263client *
210void
211final_free_player (player *pl)
212{
213 free_player (pl);
214}
215
216bool
217add_client (int fd, const char *peername) 264client::create (int fd, const char *peername)
218{ 265{
219 if (checkbanned (NULL, peername))
220 {
221 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
222 return false;
223 }
224 else
225 {
226 client *ns = new client (dup (fd), peername); 266 client *ns = new client (dup (fd), peername);
227 clients.push_back (ns); 267 ns->instantiate (); // effectively a nop right now
228 return true; 268 INVOKE_CLIENT (CONNECT, ns);
229 } 269 return ns;
230} 270}
231 271

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