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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.23 by root, Sun Dec 17 00:25:44 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 *
… …
30 * Mainly deals with initialization and higher level socket 30 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 31 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c 32 * The reading of data is handled in ericserver.c
33 */ 33 */
34 34
35
36#include <global.h> 35#include <global.h>
37#include <sproto.h> 36#include <sproto.h>
38#include <sys/types.h> 37#include <sys/types.h>
39#include <sys/time.h> 38#include <sys/time.h>
40#include <sys/socket.h> 39#include <sys/socket.h>
… …
44#include <netdb.h> 43#include <netdb.h>
45 44
46#include <unistd.h> 45#include <unistd.h>
47#include <arpa/inet.h> 46#include <arpa/inet.h>
48 47
48#include <algorithm>
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
49sockvec clients; 56sockvec clients;
50 57
51/** 58/**
52 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
53 * 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
54 * client. 61 * client.
55 */ 62 */
56client::client (int fd, const char *peername) 63client::client (int fd, const char *peername)
57: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
58 socket_ev (this, &client::socket_cb), 65 socket_ev (this, &client::socket_cb)
59 cmd_ev (this, &client::cmd_cb)
60{ 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
61 { 71 {
62 struct linger linger_opt; 72 struct linger linger_opt;
63 73
64 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
65 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
66 76
67 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)))
68 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
69 } 79 }
70 80
71 { 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
72 int val = IPTOS_LOWDELAY; 97 val = IPTOS_LOWDELAY;
73
74 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
75 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 99 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
76 } 100#endif
77 101
78 { 102#ifdef TCP_NODELAY
79 int val = 1; 103 val = 1;
80
81 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 104 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
82 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
83 } 133 }
84 134
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) 135 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
110 LOG (llevError, "InitConnection: Error on fcntl.\n"); 136 LOG (llevError, "InitConnection: Error on fcntl.\n");
111 137
112 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 138 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; 139 mapmode = Map0Cmd;
124 darkness = 1; 140 darkness = 1;
125 status = Ns_Add;
126 mapx = 11; 141 mapx = 11;
127 mapy = 11; 142 mapy = 11;
128 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
129 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
130 faces_sent = salloc<uint8> (nrofpixmaps, 0);
131 145
132 /* 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
133 * 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
134 * face information. 148 * face information.
135 */ 149 */
136 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
151 fx_want [FT_FACE] = true; // all clients must support image faces
137 152
138 // socket I/O is low priority 153 socket_ev.set (fd, EV_READ);
139 // we prefer to have the server run instead of handling client requests 154 socket_ev.prio (2); // one higher than the ticker priority
140 socket_ev.prio (PE_PRIO_NORMAL + 1);
141 socket_ev.fd (fd); 155 socket_ev.start ();
142 socket_ev.poll (PE_R);
143
144 // command handling is even lower priority
145 // that way no client can monopolise the server
146 cmd_ev.prio (PE_PRIO_NORMAL + 2);
147 156
148 // initialisation done, kick it! 157 // initialisation done, kick it!
149 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);
150 flush (); 159 flush ();
151 160
152#if 0//TODO 161 reset_stats ();
153 socket_info.nconns++; 162
154 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 163 clients.insert (this);
155 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
156#endif
157} 164}
158 165
159client::~client () 166client::~client ()
160{ 167{
161 if (pl) 168 clients.erase (this);
162 pl->socket = 0;
163 169
164 if (fd >= 0) 170 mapinfo_queue_clear ();
165 close (fd);
166
167 free (faces_sent);
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::destroy () 177client::do_destroy ()
175{ 178{
176 status = Ns_Dead; 179 attachable::do_destroy ();
180
181 if (pl)
182 pl->disconnect ();
183
184 if (fd >= 0)
185 {
186 send_packet ("goodbye");
187 flush ();
188
189 close (fd);
190 }
191
192 state = ST_DEAD;
193
177 socket_ev.suspend (); 194 socket_ev.stop ();
178 cmd_ev.suspend ();
179}
180 195
181/** This sets up the socket and reads all the image information into memory. */ 196 refcnt_dec (); // socket no longer open
197}
198
182void 199void
183init_ericserver (void) 200client::reset_stats ()
184{ 201{
185 cst_tot.time_start = time (NULL); 202 /* we need to clear these to -1 and not zero - otherwise,
186 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;
187 209
188 LOG (llevDebug, "Initialize new client/server data\n"); 210 for (int i = 0; i < NROFATTACKS; i++)
211 last_resist[i] = -1;
189 212
190 read_client_images (); 213 last_weapon_sp = -1;
191} 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;
192 225
193 226 static living zero_living;
194/******************************************************************************* 227 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} 228}
207 229
208/** Sends the 'goodbye' command to the player, and closes connection. */ 230client *
209void
210final_free_player (player *pl)
211{
212 free_player (pl);
213}
214
215bool
216add_client (int fd, const char *peername) 231client::create (int fd, const char *peername)
217{ 232{
218 if (checkbanned (NULL, peername))
219 {
220 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
221 return false;
222 }
223 else
224 {
225 client *ns = new client (dup (fd), peername); 233 client *ns = new client (dup (fd), peername);
226 clients.push_back (ns); 234 ns->instantiate (); // effectively a nop right now
227 return true; 235 INVOKE_CLIENT (CONNECT, ns);
228 } 236 return ns;
229} 237}
230 238

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