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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.32 by root, Wed Dec 27 05:32:26 2006 UTC vs.
Revision 1.51 by root, Fri Aug 24 00:26:10 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 (©) 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
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 author can be reached via e-mail to <crossfire@schmorp.de> 21 * The authors 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), 66 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
63 { 72 {
64 struct linger linger_opt; 73 struct linger linger_opt;
65 74
66 linger_opt.l_onoff = 0; 75 linger_opt.l_onoff = 0;
67 linger_opt.l_linger = 0; 76 linger_opt.l_linger = 0;
68 77
69 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 78 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
70 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 79 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
71 } 80 }
72 81
73 { 82 {
83 int val;
84
85#ifdef SO_RCVBUF
86 val = SOCKET_RCVBUF;
87 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
88 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
89#endif
90
91#ifdef SO_SNDBUF
92 val = SOCKET_SNDBUF;
93 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
94 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
95#endif
96
97#ifdef IP_TOS
74 int val = IPTOS_LOWDELAY; 98 val = IPTOS_LOWDELAY;
75
76 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 99 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
77 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 100 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
78 } 101#endif
79 102
80 { 103#ifdef TCP_NODELAY
81 int val = 1; 104 val = 1;
82
83 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 105 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
84 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); 106 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
107#endif
108
109 // set some very aggressive keepalive parameters
110#ifdef TCP_KEEPIDLE
111 val = 1;
112 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
113 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
114#endif
115
116#ifdef TCP_KEEPCNT
117 val = 3;
118 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
119 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
120#endif
121
122#ifdef TCP_KEEPINTVL
123 val = 1;
124 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
125 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
126#endif
127
128 // try to find the mss value in use
129#ifdef TCP_MAXSEG
130 socklen_t sl = sizeof (val);
131 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
132 mss = val;
133#endif
85 } 134 }
86
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
105 135
106 { 136 {
107 int bufsize = 65535; /*Supposed absolute upper limit */ 137 int bufsize = 65535; /*Supposed absolute upper limit */
108 int oldbufsize; 138 int oldbufsize;
109 int buflen = sizeof (int); 139 int buflen = sizeof (int);
… …
126 mapmode = Map0Cmd; 156 mapmode = Map0Cmd;
127 darkness = 1; 157 darkness = 1;
128 mapx = 11; 158 mapx = 11;
129 mapy = 11; 159 mapy = 11;
130 itemcmd = 1; /* Default is version item1 command */ 160 itemcmd = 1; /* Default is version item1 command */
131 161 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
132 faces_sent = salloc0<uint8> (nrofpixmaps);
133 162
134 /* Do this so we don't send a face command for the client for 163 /* 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 164 * this face. Face 0 is sent to the client to say clear
136 * face information. 165 * face information.
137 */ 166 */
138 faces_sent[0] = NS_FACESENT_FACE; 167 faces_sent[0] = true;
168 fx_want [FT_FACE] = true; // all clients must support image faces
139 169
140 // socket I/O is low priority
141 // we prefer to have the server run instead of handling client requests
142 socket_ev.prio (PE_PRIO_NORMAL + 1); 170 socket_ev.prio (PE_PRIO_NORMAL);
143 socket_ev.fd (fd); 171 socket_ev.fd (fd);
144 socket_ev.poll (PE_R); 172 socket_ev.poll (PE_R);
145 173
146 // command handling is even lower priority
147 // that way no client can monopolise the server
148 cmd_ev.prio (PE_PRIO_NORMAL + 2); 174 cmd_ev.prio (PE_PRIO_NORMAL);
149 175
150 // initialisation done, kick it! 176 // initialisation done, kick it!
151 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);
152 flush (); 178 flush ();
153 179
154 // clients are externally referenced by the socket 180 reset_stats ();
155 refcnt_inc ();
156 clients.push_back (this);
157 181
158#if 0//TODO 182 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} 183}
164 184
165client::~client () 185client::~client ()
166{ 186{
167 sockvec::iterator i = find (clients.begin (), clients.end (), this);
168 if (i != clients.end ())
169 clients.erase (i); 187 clients.erase (this);
170 188
171 sfree<uint8> (faces_sent, nrofpixmaps); 189 mapinfo_queue_clear ();
172 free (stats.range); 190 free (stats.range);
173 free (stats.title); 191 free (stats.title);
174 free (host); 192 free (host);
175} 193}
176 194
… …
181 199
182 if (pl) 200 if (pl)
183 pl->disconnect (); 201 pl->disconnect ();
184 202
185 if (fd >= 0) 203 if (fd >= 0)
204 {
205 send_packet ("goodbye");
206 flush ();
207
186 close (fd); 208 close (fd);
209 }
187 210
188 state = ST_DEAD; 211 state = ST_DEAD;
189 212
190 socket_ev.suspend (); 213 socket_ev.suspend ();
191 cmd_ev.suspend (); 214 cmd_ev.suspend ();
192 215
193 // socket now longer references us 216 refcnt_dec (); // socket no longer open
194 refcnt_dec ();
195} 217}
196 218
197/** This sets up the socket and reads all the image information into memory. */
198void 219void
199init_ericserver (void) 220client::reset_stats ()
200{ 221{
201 cst_tot.time_start = time (NULL); 222 /* we need to clear these to -1 and not zero - otherwise,
202 cst_lst.time_start = time (NULL); 223 * if a player quits and starts a new character, we wont
224 * send new values to the client, as things like exp start
225 * at zero.
226 */
227 for (int i = 0; i < NUM_SKILLS; i++)
228 last_skill_exp[i] = -1;
203 229
204 LOG (llevDebug, "Initialize new client/server data\n"); 230 for (int i = 0; i < NROFATTACKS; i++)
231 last_resist[i] = -1;
205 232
206 read_client_images (); 233 last_weapon_sp = -1;
207} 234 last_level = -1;
235 last_stats.exp = -1;
236 last_weight = (uint32) - 1;
237 last_flags = 0;
238 last_weight = 0;
239 last_weight_limit = 0;
240 last_path_attuned = 0;
241 last_path_repelled = 0;
242 last_path_denied = 0;
243 last_speed = 0;
244 last_flags = 0;
208 245
209 246 static living zero_living;
210/******************************************************************************* 247 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} 248}
223 249
224client * 250client *
225client::create (int fd, const char *peername) 251client::create (int fd, const char *peername)
226{ 252{
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); 253 client *ns = new client (dup (fd), peername);
235
236 ns->instantiate (); // effectively a nop right now 254 ns->instantiate (); // effectively a nop right now
237
238 INVOKE_CLIENT (CONNECT, ns); 255 INVOKE_CLIENT (CONNECT, ns);
239
240 return ns; 256 return ns;
241 }
242} 257}
243 258

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