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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.33 by pippijn, Sat Jan 6 14:42:31 2007 UTC vs.
Revision 1.58 by root, Tue Apr 22 07:28:05 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 (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Deliantra 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 * Deliantra 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. 20 *
21 21 * The authors can be reached via e-mail to <support@deliantra.net>
22 The author 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
28 * 27 *
… …
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{
67 refcnt_inc (); // the socket is an external reference
68
69 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
70
64 { 71 {
65 struct linger linger_opt; 72 struct linger linger_opt;
66 73
67 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
68 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
69 76
70 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)))
71 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
72 } 79 }
73 80
74 { 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
75 int val = IPTOS_LOWDELAY; 97 val = IPTOS_LOWDELAY;
76
77 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
78 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 99 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
79 } 100#endif
80 101
81 { 102#ifdef TCP_NODELAY
82 int val = 1; 103 val = 1;
83
84 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 104 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
85 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
86 } 133 }
87 134
88#ifdef __linux__
89 {
90 int val;
91
92 // set some very aggressive keepalive parameters
93 val = 10;
94 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
95 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
96
97 val = 5;
98 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
99 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
100
101 val = 1;
102 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
103 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
104 }
105#endif
106
107 {
108 int bufsize = 65535; /*Supposed absolute upper limit */
109 int oldbufsize;
110 int buflen = sizeof (int);
111
112 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 135 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
113 LOG (llevError, "InitConnection: Error on fcntl.\n"); 136 LOG (llevError, "InitConnection: Error on fcntl.\n");
114
115 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1)
116 oldbufsize = 0;
117
118 if (oldbufsize < bufsize)
119 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
120 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
121
122 buflen = sizeof (oldbufsize);
123 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
124 }
125 137
126 state = ST_SETUP; 138 state = ST_SETUP;
127 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
128 darkness = 1; 140 darkness = 1;
129 mapx = 11; 141 mapx = 11;
130 mapy = 11; 142 mapy = 11;
131 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
132 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
133 faces_sent = salloc0<uint8> (nrofpixmaps);
134 145
135 /* 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
136 * 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
137 * face information. 148 * face information.
138 */ 149 */
139 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
151 fx_want [FT_FACE] = true; // all clients must support image faces
140 152
141 // socket I/O is low priority 153 socket_ev.set (fd, EV_READ);
142 // we prefer to have the server run instead of handling client requests 154 socket_ev.prio (2); // one higher than the ticker priority
143 socket_ev.prio (PE_PRIO_NORMAL + 1);
144 socket_ev.fd (fd); 155 socket_ev.start ();
145 socket_ev.poll (PE_R);
146
147 // command handling is even lower priority
148 // that way no client can monopolise the server
149 cmd_ev.prio (PE_PRIO_NORMAL + 2);
150 156
151 // initialisation done, kick it! 157 // initialisation done, kick it!
152 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);
153 flush (); 159 flush ();
154 160
155 // clients are externally referenced by the socket 161 reset_stats ();
156 refcnt_inc ();
157 clients.push_back (this);
158 162
159#if 0//TODO 163 clients.insert (this);
160 socket_info.nconns++;
161 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
162 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
163#endif
164} 164}
165 165
166client::~client () 166client::~client ()
167{ 167{
168 sockvec::iterator i = find (clients.begin (), clients.end (), this);
169 if (i != clients.end ())
170 clients.erase (i); 168 clients.erase (this);
171 169
172 sfree<uint8> (faces_sent, nrofpixmaps); 170 mapinfo_queue_clear ();
173 free (stats.range); 171 free (stats.range);
174 free (stats.title); 172 free (stats.title);
175 free (host); 173 free (host);
176} 174}
177 175
… …
182 180
183 if (pl) 181 if (pl)
184 pl->disconnect (); 182 pl->disconnect ();
185 183
186 if (fd >= 0) 184 if (fd >= 0)
185 {
186 send_packet ("goodbye");
187 flush ();
188
187 close (fd); 189 close (fd);
190 }
188 191
189 state = ST_DEAD; 192 state = ST_DEAD;
190 193
191 socket_ev.suspend (); 194 socket_ev.stop ();
192 cmd_ev.suspend ();
193 195
194 // socket now longer references us 196 refcnt_dec (); // socket no longer open
195 refcnt_dec ();
196} 197}
197 198
198/** This sets up the socket and reads all the image information into memory. */
199void 199void
200init_ericserver (void) 200client::reset_stats ()
201{ 201{
202 cst_tot.time_start = time (NULL); 202 /* we need to clear these to -1 and not zero - otherwise,
203 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;
204 209
205 LOG (llevDebug, "Initialize new client/server data\n"); 210 for (int i = 0; i < NROFATTACKS; i++)
211 last_resist[i] = -1;
206 212
207 read_client_images (); 213 last_weapon_sp = -1;
208} 214 last_level = -1;
215 last_stats.exp = -1;
216 last_flags = 0;
217 last_weight = -1;
218 last_weight_limit = 0;
219 last_path_attuned = 0;
220 last_path_repelled = 0;
221 last_path_denied = 0;
222 last_speed = 0;
223 last_flags = 0;
209 224
210 225 static living zero_living;
211/******************************************************************************* 226 last_stats = zero_living;
212 *
213 * Start of functions dealing with freeing of the data.
214 *
215 ******************************************************************************/
216
217/** Free's all the memory that ericserver allocates. */
218void
219free_all_newserver (void)
220{
221 LOG (llevDebug, "Freeing all new client/server information.\n");
222 free_socket_images ();
223} 227}
224 228
225client * 229client *
226client::create (int fd, const char *peername) 230client::create (int fd, const char *peername)
227{ 231{
228 if (checkbanned (NULL, peername))
229 {
230 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
231 return 0;
232 }
233 else
234 {
235 client *ns = new client (dup (fd), peername); 232 client *ns = new client (dup (fd), peername);
236
237 ns->instantiate (); // effectively a nop right now 233 ns->instantiate (); // effectively a nop right now
238
239 INVOKE_CLIENT (CONNECT, ns); 234 INVOKE_CLIENT (CONNECT, ns);
240
241 return ns; 235 return ns;
242 }
243} 236}
244 237

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