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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.28 by root, Thu Dec 21 23:37:06 2006 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 (©) 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 *
… …
43#include <netdb.h> 43#include <netdb.h>
44 44
45#include <unistd.h> 45#include <unistd.h>
46#include <arpa/inet.h> 46#include <arpa/inet.h>
47 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
48sockvec clients; 56sockvec clients;
49 57
50/** 58/**
51 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
52 * 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
53 * client. 61 * client.
54 */ 62 */
55client::client (int fd, const char *peername) 63client::client (int fd, const char *peername)
56: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client::socket_cb), 65 socket_ev (this, &client::socket_cb)
58 cmd_ev (this, &client::cmd_cb),
59 cc_inv (this), cc_other (this)
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
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
103 134
104 { 135 {
105 int bufsize = 65535; /*Supposed absolute upper limit */ 136 int bufsize = 65535; /*Supposed absolute upper limit */
106 int oldbufsize; 137 int oldbufsize;
107 int buflen = sizeof (int); 138 int buflen = sizeof (int);
… …
124 mapmode = Map0Cmd; 155 mapmode = Map0Cmd;
125 darkness = 1; 156 darkness = 1;
126 mapx = 11; 157 mapx = 11;
127 mapy = 11; 158 mapy = 11;
128 itemcmd = 1; /* Default is version item1 command */ 159 itemcmd = 1; /* Default is version item1 command */
129 160 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
130 faces_sent = salloc0<uint8> (nrofpixmaps);
131 161
132 /* 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
133 * 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
134 * face information. 164 * face information.
135 */ 165 */
136 faces_sent[0] = NS_FACESENT_FACE; 166 faces_sent[0] = true;
167 fx_want [FT_FACE] = true; // all clients must support image faces
137 168
138 // socket I/O is low priority
139 // we prefer to have the server run instead of handling client requests
140 socket_ev.prio (PE_PRIO_NORMAL + 1); 169 socket_ev.prio (PE_PRIO_HIGH);
141 socket_ev.fd (fd); 170 socket_ev.fd (fd);
142 socket_ev.poll (PE_R); 171 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);
147 172
148 // initialisation done, kick it! 173 // initialisation done, kick it!
149 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);
150 flush (); 175 flush ();
151 176
152#if 0//TODO 177 reset_stats ();
153 socket_info.nconns++; 178
154 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 179 clients.insert (this);
155 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
156#endif
157} 180}
158 181
159client::~client () 182client::~client ()
160{ 183{
161 if (pl) 184 clients.erase (this);
162 pl->ns = 0;
163 185
164 if (fd >= 0) 186 mapinfo_queue_clear ();
165 close (fd);
166
167 sfree<uint8> (faces_sent, nrofpixmaps);
168 free (stats.range); 187 free (stats.range);
169 free (stats.title); 188 free (stats.title);
170 free (host); 189 free (host);
171} 190}
172 191
173void 192void
174client::destroy () 193client::do_destroy ()
175{ 194{
195 attachable::do_destroy ();
196
197 if (pl)
198 pl->disconnect ();
199
200 if (fd >= 0)
201 {
202 send_packet ("goodbye");
203 flush ();
204
205 close (fd);
206 }
207
176 state = ST_DEAD; 208 state = ST_DEAD;
177 209
178 socket_ev.suspend (); 210 socket_ev.suspend ();
179 cmd_ev.suspend ();
180}
181 211
182/** This sets up the socket and reads all the image information into memory. */ 212 refcnt_dec (); // socket no longer open
213}
214
183void 215void
184init_ericserver (void) 216client::reset_stats ()
185{ 217{
186 cst_tot.time_start = time (NULL); 218 /* we need to clear these to -1 and not zero - otherwise,
187 cst_lst.time_start = time (NULL); 219 * if a player quits and starts a new character, we wont
220 * send new values to the client, as things like exp start
221 * at zero.
222 */
223 for (int i = 0; i < NUM_SKILLS; i++)
224 last_skill_exp[i] = -1;
188 225
189 LOG (llevDebug, "Initialize new client/server data\n"); 226 for (int i = 0; i < NROFATTACKS; i++)
227 last_resist[i] = -1;
190 228
191 read_client_images (); 229 last_weapon_sp = -1;
192} 230 last_level = -1;
231 last_stats.exp = -1;
232 last_weight = (uint32) - 1;
233 last_flags = 0;
234 last_weight = 0;
235 last_weight_limit = 0;
236 last_path_attuned = 0;
237 last_path_repelled = 0;
238 last_path_denied = 0;
239 last_speed = 0;
240 last_flags = 0;
193 241
194 242 static living zero_living;
195/******************************************************************************* 243 last_stats = zero_living;
196 *
197 * Start of functions dealing with freeing of the data.
198 *
199 ******************************************************************************/
200
201/** Free's all the memory that ericserver allocates. */
202void
203free_all_newserver (void)
204{
205 LOG (llevDebug, "Freeing all new client/server information.\n");
206 free_socket_images ();
207}
208
209/** Sends the 'goodbye' command to the player, and closes connection. */
210void
211final_free_player (player *pl)
212{
213 free_player (pl);
214} 244}
215 245
216client * 246client *
217client::create (int fd, const char *peername) 247client::create (int fd, const char *peername)
218{ 248{
219 if (checkbanned (NULL, peername))
220 {
221 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
222 return 0;
223 }
224 else
225 {
226 client *ns = new client (dup (fd), peername); 249 client *ns = new client (dup (fd), peername);
227 clients.push_back (ns);
228
229 ns->instantiate (); // effectively a nop right now 250 ns->instantiate (); // effectively a nop right now
230
231 INVOKE_CLIENT (CONNECT, ns); 251 INVOKE_CLIENT (CONNECT, ns);
232
233 return ns; 252 return ns;
234 }
235} 253}
236 254

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