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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 1.62 by root, Mon Oct 12 14:00:59 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 it under
8 it under the terms of the GNU General Public License as published by 9 * the terms of the Affero GNU General Public License as published by the
9 the Free Software Foundation; either version 2 of the License, or 10 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 11 * 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 Affero GNU General Public License
18 along with this program; if not, write to the Free Software 19 * and the GNU General Public License along with this program. If not, see
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * <http://www.gnu.org/licenses/>.
20 21 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The authors can be reached via e-mail to <support@deliantra.net>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Socket general functions 27 * Socket general functions
27 * 28 *
… …
30 * Mainly deals with initialization and higher level socket 31 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 32 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c 33 * The reading of data is handled in ericserver.c
33 */ 34 */
34 35
35
36#include <global.h> 36#include <global.h>
37#include <sproto.h> 37#include <sproto.h>
38#include <sys/types.h> 38#include <sys/types.h>
39#include <sys/time.h> 39#include <sys/time.h>
40#include <sys/socket.h> 40#include <sys/socket.h>
41#include <netinet/in.h> 41#include <netinet/in.h>
42#include <netinet/tcp.h>
43#include <netinet/ip.h>
42#include <netdb.h> 44#include <netdb.h>
43 45
44#include <unistd.h> 46#include <unistd.h>
45#include <arpa/inet.h> 47#include <arpa/inet.h>
48
49#include <algorithm>
50
51// use relatively small values, as we do not expect to receive much,
52// and we do userspace write buffering
53// 8kb limits throughput to roughly 66kb/s
54#define SOCKET_RCVBUF 8192
55#define SOCKET_SNDBUF 16384
46 56
47sockvec clients; 57sockvec clients;
48 58
49/** 59/**
50 * Initializes a connection. Really, it just sets up the data structure, 60 * Initializes a connection. Really, it just sets up the data structure,
51 * socket setup is handled elsewhere. We do send a version to the 61 * socket setup is handled elsewhere. We do send a version to the
52 * client. 62 * client.
53 */ 63 */
54client::client (int fd, const char *peername) 64client::client (int fd, const char *peername)
55: fd (fd), host (strdup (peername)), 65: fd (fd), host (strdup (peername)),
56 socket_ev (this, &client::socket_cb), 66 socket_ev (this, &client::socket_cb)
57 cmd_ev (this, &client::cmd_cb)
58{ 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
72 socket_timeout = 16.;
73
59 { 74 {
60 struct linger linger_opt; 75 struct linger linger_opt;
61 76
62 linger_opt.l_onoff = 0; 77 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0; 78 linger_opt.l_linger = 0;
64 79
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 80 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 81 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
67 } 82 }
68 83
69 { 84 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 85 int val;
71 int oldbufsize;
72 int buflen = sizeof (int);
73 86
74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 87#ifdef SO_RCVBUF
75 LOG (llevError, "InitConnection: Error on fcntl.\n"); 88 val = SOCKET_RCVBUF;
89 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
90 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
91#endif
76 92
77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 93#ifdef SO_SNDBUF
78 oldbufsize = 0; 94 val = SOCKET_SNDBUF;
79
80 if (oldbufsize < bufsize)
81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 95 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); 96 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
97#endif
83 98
84 buflen = sizeof (oldbufsize); 99#ifdef IP_TOS
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 100 val = IPTOS_LOWDELAY;
101 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
102 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
103#endif
104
105#ifdef TCP_NODELAY
106 val = 1;
107 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
108 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
109#endif
110
111 // set some very aggressive keepalive parameters
112#ifdef TCP_KEEPIDLE
113 val = 1;
114 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
115 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
116#endif
117
118#ifdef TCP_KEEPCNT
119 val = 3;
120 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
121 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
122#endif
123
124#ifdef TCP_KEEPINTVL
125 val = 1;
126 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
127 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
128#endif
129
130 // try to find the mss value in use
131#ifdef TCP_MAXSEG
132 socklen_t sl = sizeof (val);
133 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
134 mss = val;
135#endif
86 } 136 }
87 137
138 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
139 LOG (llevError, "InitConnection: Error on fcntl.\n");
140
141 state = ST_SETUP;
88 mapmode = Map0Cmd; 142 mapmode = Map1aCmd;
89 darkness = 1;
90 status = Ns_Add;
91 mapx = 11; 143 mapx = 11;
92 mapy = 11; 144 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 145 itemcmd = 1; /* Default is version item1 command */
94 146 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);
99 147
100 /* Do this so we don't send a face command for the client for 148 /* 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 149 * this face. Face 0 is sent to the client to say clear
102 * face information. 150 * face information.
103 */ 151 */
104 faces_sent[0] = NS_FACESENT_FACE; 152 faces_sent[0] = true;
153 fx_want [FT_FACE] = true; // all clients must support image faces
105 154
106 // socket I/O is low priority 155 socket_ev.set (fd, EV_READ);
107 // we prefer to have the server run instead of handling client requests 156 socket_ev.prio (2); // one higher than the ticker priority
108 socket_ev.prio (PE_PRIO_NORMAL + 1);
109 socket_ev.fd (fd); 157 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);
115 158
116 // initialisation done, kick it! 159 // initialisation done, kick it!
117
118 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 160 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
119 flush (); 161 flush ();
120 162
121#if 0//TODO 163 reset_stats ();
122 socket_info.nconns++; 164
123 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 165 clients.insert (this);
124 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
125#endif
126} 166}
127 167
128client::~client () 168client::~client ()
129{ 169{
170 clients.erase (this);
171
172 mapinfo_queue_clear ();
173 free (stats.range);
174 free (stats.title);
175 free (host);
176}
177
178void
179client::do_destroy ()
180{
181 attachable::do_destroy ();
182
130 if (pl) 183 if (pl)
131 pl->socket = 0; 184 pl->disconnect ();
132 185
133 if (fd >= 0) 186 if (fd >= 0)
134 close (fd), fd = -1; 187 {
188 send_packet ("goodbye");
189 flush ();
135 190
136 free (stats.range), stats.range = 0; 191 close (fd);
137 free (stats.title), stats.title = 0; 192 }
138 free (host), host = 0; 193
194 state = ST_DEAD;
195
196 socket_ev.stop ();
197
198 refcnt_dec (); // socket no longer open
139} 199}
140 200
141void 201void
142client::destroy () 202client::reset_stats ()
143{ 203{
144 status = Ns_Dead; 204 /* we need to clear these to -1 and not zero - otherwise,
145 socket_ev.suspend (); 205 * if a player quits and starts a new character, we wont
146 cmd_ev.suspend (); 206 * send new values to the client, as things like exp start
147} 207 * at zero.
208 */
209 for (int i = 0; i < NUM_SKILLS; i++)
210 last_skill_exp[i] = -1;
148 211
149/** This sets up the socket and reads all the image information into memory. */ 212 for (int i = 0; i < NROFATTACKS; i++)
150void 213 last_resist[i] = -1;
151init_ericserver (void)
152{
153 cst_tot.time_start = time (NULL);
154 cst_lst.time_start = time (NULL);
155 214
156 LOG (llevDebug, "Initialize new client/server data\n"); 215 last_weapon_sp = -1;
216 last_level = -1;
217 last_stats.exp = -1;
218 last_flags = 0;
219 last_weight = -1;
220 last_weight_limit = 0;
221 last_path_attuned = 0;
222 last_path_repelled = 0;
223 last_path_denied = 0;
224 last_speed = 0;
225 last_flags = 0;
157 226
158 read_client_images (); 227 static living zero_living;
228 last_stats = zero_living;
159} 229}
160 230
161 231client *
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) 232client::create (int fd, const char *peername)
185{ 233{
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); 234 client *ns = new client (dup (fd), peername);
194 clients.push_back (ns); 235 ns->instantiate (); // effectively a nop right now
195 return true; 236 INVOKE_CLIENT (CONNECT, ns);
196 } 237 return ns;
197} 238}
198 239

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