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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.21 by root, Sat Dec 16 03:08:26 2006 UTC vs.
Revision 1.61 by root, Wed Sep 2 16:54:20 2009 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 (©) 2005,2006,2007,2008 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>
41#include <netinet/in.h> 40#include <netinet/in.h>
41#include <netinet/tcp.h>
42#include <netinet/ip.h>
42#include <netdb.h> 43#include <netdb.h>
43 44
44#include <unistd.h> 45#include <unistd.h>
45#include <arpa/inet.h> 46#include <arpa/inet.h>
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
46 55
47sockvec clients; 56sockvec clients;
48 57
49/** 58/**
50 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
51 * 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
52 * client. 61 * client.
53 */ 62 */
54client::client (int fd, const char *peername) 63client::client (int fd, const char *peername)
55: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
56 socket_ev (this, &client::socket_cb), 65 socket_ev (this, &client::socket_cb)
57 cmd_ev (this, &client::cmd_cb)
58{ 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
71 socket_timeout = 16.;
72
59 { 73 {
60 struct linger linger_opt; 74 struct linger linger_opt;
61 75
62 linger_opt.l_onoff = 0; 76 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0; 77 linger_opt.l_linger = 0;
64 78
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 79 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 80 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
67 } 81 }
68 82
69 { 83 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 84 int val;
71 int oldbufsize;
72 int buflen = sizeof (int);
73 85
74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 86#ifdef SO_RCVBUF
75 LOG (llevError, "InitConnection: Error on fcntl.\n"); 87 val = SOCKET_RCVBUF;
88 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
89 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
90#endif
76 91
77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 92#ifdef SO_SNDBUF
78 oldbufsize = 0; 93 val = SOCKET_SNDBUF;
79
80 if (oldbufsize < bufsize)
81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 94 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
82 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 95 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
96#endif
83 97
84 buflen = sizeof (oldbufsize); 98#ifdef IP_TOS
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 99 val = IPTOS_LOWDELAY;
100 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
101 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
102#endif
103
104#ifdef TCP_NODELAY
105 val = 1;
106 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
107 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
108#endif
109
110 // set some very aggressive keepalive parameters
111#ifdef TCP_KEEPIDLE
112 val = 1;
113 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
114 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
115#endif
116
117#ifdef TCP_KEEPCNT
118 val = 3;
119 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
120 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
121#endif
122
123#ifdef TCP_KEEPINTVL
124 val = 1;
125 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
126 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
127#endif
128
129 // try to find the mss value in use
130#ifdef TCP_MAXSEG
131 socklen_t sl = sizeof (val);
132 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
133 mss = val;
134#endif
86 } 135 }
87 136
137 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
138 LOG (llevError, "InitConnection: Error on fcntl.\n");
139
140 state = ST_SETUP;
88 mapmode = Map0Cmd; 141 mapmode = Map1aCmd;
89 darkness = 1;
90 status = Ns_Add;
91 mapx = 11; 142 mapx = 11;
92 mapy = 11; 143 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 144 itemcmd = 1; /* Default is version item1 command */
94 145 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
95 faces_sent_len = nrofpixmaps;
96 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
97 if (!faces_sent)
98 fatal (OUT_OF_MEMORY);
99 146
100 /* Do this so we don't send a face command for the client for 147 /* Do this so we don't send a face command for the client for
101 * this face. Face 0 is sent to the client to say clear 148 * this face. Face 0 is sent to the client to say clear
102 * face information. 149 * face information.
103 */ 150 */
104 faces_sent[0] = NS_FACESENT_FACE; 151 faces_sent[0] = true;
152 fx_want [FT_FACE] = true; // all clients must support image faces
105 153
106 // socket I/O is low priority 154 socket_ev.set (fd, EV_READ);
107 // we prefer to have the server run instead of handling client requests 155 socket_ev.prio (2); // one higher than the ticker priority
108 socket_ev.prio (PE_PRIO_NORMAL + 1);
109 socket_ev.fd (fd); 156 socket_ev.start ();
110 socket_ev.poll (PE_R);
111
112 // command handling is even lower priority
113 // that way no client can monopolise the server
114 cmd_ev.prio (PE_PRIO_NORMAL + 2);
115 157
116 // initialisation done, kick it! 158 // initialisation done, kick it!
117
118 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 159 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
119 flush (); 160 flush ();
120 161
121#if 0//TODO 162 reset_stats ();
122 socket_info.nconns++; 163
123 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 164 clients.insert (this);
124 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
125#endif
126} 165}
127 166
128client::~client () 167client::~client ()
129{ 168{
169 clients.erase (this);
170
171 mapinfo_queue_clear ();
172 free (stats.range);
173 free (stats.title);
174 free (host);
175}
176
177void
178client::do_destroy ()
179{
180 attachable::do_destroy ();
181
130 if (pl) 182 if (pl)
131 pl->socket = 0; 183 pl->disconnect ();
132 184
133 if (fd >= 0) 185 if (fd >= 0)
134 close (fd), fd = -1; 186 {
187 send_packet ("goodbye");
188 flush ();
135 189
136 free (stats.range), stats.range = 0; 190 close (fd);
137 free (stats.title), stats.title = 0; 191 }
138 free (host), host = 0; 192
193 state = ST_DEAD;
194
195 socket_ev.stop ();
196
197 refcnt_dec (); // socket no longer open
139} 198}
140 199
141void 200void
142client::destroy () 201client::reset_stats ()
143{ 202{
144 status = Ns_Dead; 203 /* we need to clear these to -1 and not zero - otherwise,
145 socket_ev.suspend (); 204 * if a player quits and starts a new character, we wont
146 cmd_ev.suspend (); 205 * send new values to the client, as things like exp start
147} 206 * at zero.
207 */
208 for (int i = 0; i < NUM_SKILLS; i++)
209 last_skill_exp[i] = -1;
148 210
149/** This sets up the socket and reads all the image information into memory. */ 211 for (int i = 0; i < NROFATTACKS; i++)
150void 212 last_resist[i] = -1;
151init_ericserver (void)
152{
153 cst_tot.time_start = time (NULL);
154 cst_lst.time_start = time (NULL);
155 213
156 LOG (llevDebug, "Initialize new client/server data\n"); 214 last_weapon_sp = -1;
215 last_level = -1;
216 last_stats.exp = -1;
217 last_flags = 0;
218 last_weight = -1;
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;
157 225
158 read_client_images (); 226 static living zero_living;
227 last_stats = zero_living;
159} 228}
160 229
161 230client *
162/*******************************************************************************
163 *
164 * Start of functions dealing with freeing of the data.
165 *
166 ******************************************************************************/
167
168/** Free's all the memory that ericserver allocates. */
169void
170free_all_newserver (void)
171{
172 LOG (llevDebug, "Freeing all new client/server information.\n");
173 free_socket_images ();
174}
175
176/** Sends the 'goodbye' command to the player, and closes connection. */
177void
178final_free_player (player *pl)
179{
180 free_player (pl);
181}
182
183bool
184add_client (int fd, const char *peername) 231client::create (int fd, const char *peername)
185{ 232{
186 if (checkbanned (NULL, peername))
187 {
188 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
189 return false;
190 }
191 else
192 {
193 client *ns = new client (dup (fd), peername); 233 client *ns = new client (dup (fd), peername);
194 clients.push_back (ns); 234 ns->instantiate (); // effectively a nop right now
195 return true; 235 INVOKE_CLIENT (CONNECT, ns);
196 } 236 return ns;
197} 237}
198 238

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