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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 1.55 by root, Wed Nov 14 10:12:45 2007 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 cc_inv (this), cc_other (this)
61{ 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
62 { 71 {
63 struct linger linger_opt; 72 struct linger linger_opt;
64 73
65 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
66 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
67 76
68 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)))
69 LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
70 } 79 }
71 80
72 { 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
73 int val = IPTOS_LOWDELAY; 97 val = IPTOS_LOWDELAY;
74
75 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) 98 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
76 LOG (llevError, "IP_TOS: %s\n", strerror (errno)); 99 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
77 } 100#endif
78 101
79 { 102#ifdef TCP_NODELAY
80 int val = 1; 103 val = 1;
81
82 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) 104 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
83 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
84 } 133 }
85 134
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
105 {
106 int bufsize = 65535; /*Supposed absolute upper limit */
107 int oldbufsize;
108 int buflen = sizeof (int);
109
110 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 135 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
111 LOG (llevError, "InitConnection: Error on fcntl.\n"); 136 LOG (llevError, "InitConnection: Error on fcntl.\n");
112 137
113 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 138 state = ST_SETUP;
114 oldbufsize = 0;
115
116 if (oldbufsize < bufsize)
117 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize)))
118 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize);
119
120 buflen = sizeof (oldbufsize);
121 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
122 }
123
124 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
125 darkness = 1; 140 darkness = 1;
126 status = Ns_Add;
127 mapx = 11; 141 mapx = 11;
128 mapy = 11; 142 mapy = 11;
129 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
130 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
131 faces_sent = salloc<uint8> (nrofpixmaps, 0);
132 145
133 /* 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
134 * 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
135 * face information. 148 * face information.
136 */ 149 */
137 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
151 fx_want [FT_FACE] = true; // all clients must support image faces
138 152
139 // socket I/O is low priority 153 socket_ev.set (fd, EV_READ);
140 // we prefer to have the server run instead of handling client requests
141 socket_ev.prio (PE_PRIO_NORMAL + 1);
142 socket_ev.fd (fd); 154 socket_ev.start ();
143 socket_ev.poll (PE_R);
144
145 // command handling is even lower priority
146 // that way no client can monopolise the server
147 cmd_ev.prio (PE_PRIO_NORMAL + 2);
148 155
149 // initialisation done, kick it! 156 // initialisation done, kick it!
150 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 157 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
151 flush (); 158 flush ();
152 159
153#if 0//TODO 160 reset_stats ();
154 socket_info.nconns++; 161
155 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 162 clients.insert (this);
156 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
157#endif
158} 163}
159 164
160client::~client () 165client::~client ()
161{ 166{
162 if (pl) 167 clients.erase (this);
163 pl->socket = 0;
164 168
165 if (fd >= 0) 169 mapinfo_queue_clear ();
166 close (fd);
167
168 sfree<uint8> (faces_sent, nrofpixmaps);
169 free (stats.range); 170 free (stats.range);
170 free (stats.title); 171 free (stats.title);
171 free (host); 172 free (host);
172} 173}
173 174
174void 175void
175client::destroy () 176client::do_destroy ()
176{ 177{
177 status = Ns_Dead; 178 attachable::do_destroy ();
179
180 if (pl)
181 pl->disconnect ();
182
183 if (fd >= 0)
184 {
185 send_packet ("goodbye");
186 flush ();
187
188 close (fd);
189 }
190
191 state = ST_DEAD;
192
178 socket_ev.suspend (); 193 socket_ev.stop ();
179 cmd_ev.suspend ();
180}
181 194
182/** This sets up the socket and reads all the image information into memory. */ 195 refcnt_dec (); // socket no longer open
196}
197
183void 198void
184init_ericserver (void) 199client::reset_stats ()
185{ 200{
186 cst_tot.time_start = time (NULL); 201 /* we need to clear these to -1 and not zero - otherwise,
187 cst_lst.time_start = time (NULL); 202 * if a player quits and starts a new character, we wont
203 * send new values to the client, as things like exp start
204 * at zero.
205 */
206 for (int i = 0; i < NUM_SKILLS; i++)
207 last_skill_exp[i] = -1;
188 208
189 LOG (llevDebug, "Initialize new client/server data\n"); 209 for (int i = 0; i < NROFATTACKS; i++)
210 last_resist[i] = -1;
190 211
191 read_client_images (); 212 last_weapon_sp = -1;
192} 213 last_level = -1;
214 last_stats.exp = -1;
215 last_weight = (uint32) - 1;
216 last_flags = 0;
217 last_weight = 0;
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;
193 224
194 225 static living zero_living;
195/******************************************************************************* 226 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} 227}
208 228
209/** Sends the 'goodbye' command to the player, and closes connection. */ 229client *
210void
211final_free_player (player *pl)
212{
213 free_player (pl);
214}
215
216bool
217add_client (int fd, const char *peername) 230client::create (int fd, const char *peername)
218{ 231{
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); 232 client *ns = new client (dup (fd), peername);
227 clients.push_back (ns); 233 ns->instantiate (); // effectively a nop right now
228 return true; 234 INVOKE_CLIENT (CONNECT, ns);
229 } 235 return ns;
230} 236}
231 237

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