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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.16 by root, Thu Dec 14 04:30:33 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#ifdef HAVE_UNISTD_H
45# include <unistd.h> 45#include <unistd.h>
46#endif
47
48#ifdef HAVE_ARPA_INET_H
49# include <arpa/inet.h> 46#include <arpa/inet.h>
50#endif
51#include <newserver.h>
52 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
53sockvec client_sockets; 56sockvec clients;
54 57
55/** 58/**
56 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
57 * 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
58 * client. 61 * client.
59 */ 62 */
60client_socket::client_socket (int fd, const char *peername) 63client::client (int fd, const char *peername)
61: fd (fd), host (strdup (peername)) 64: fd (fd), host (strdup (peername)),
65 socket_ev (this, &client::socket_cb)
62{ 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
63 { 73 {
64 struct linger linger_opt; 74 struct linger linger_opt;
65 75
66 linger_opt.l_onoff = 0; 76 linger_opt.l_onoff = 0;
67 linger_opt.l_linger = 0; 77 linger_opt.l_linger = 0;
68 78
69 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)))
70 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 80 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
71 } 81 }
72 82
73 { 83 {
74 int bufsize = 65535; /*Supposed absolute upper limit */ 84 int val;
75 int oldbufsize;
76 int buflen = sizeof (int);
77 85
78 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 86#ifdef SO_RCVBUF
79 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
80 91
81 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 92#ifdef SO_SNDBUF
82 oldbufsize = 0; 93 val = SOCKET_SNDBUF;
83
84 if (oldbufsize < bufsize)
85 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 94 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
86 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
87 97
88 buflen = sizeof (oldbufsize); 98#ifdef IP_TOS
89 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
90 } 135 }
91 136
137 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
138 LOG (llevError, "InitConnection: Error on fcntl.\n");
139
140 state = ST_SETUP;
92 mapmode = Map0Cmd; 141 mapmode = Map1aCmd;
93 darkness = 1;
94 status = Ns_Add;
95 mapx = 11; 142 mapx = 11;
96 mapy = 11; 143 mapy = 11;
97 itemcmd = 1; /* Default is version item1 command */ 144 itemcmd = 1; /* Default is version item1 command */
98 145 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
99 faces_sent_len = nrofpixmaps;
100 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
101 if (!faces_sent)
102 fatal (OUT_OF_MEMORY);
103 146
104 /* 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
105 * 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
106 * face information. 149 * face information.
107 */ 150 */
108 faces_sent[0] = NS_FACESENT_FACE; 151 faces_sent[0] = true;
152 fx_want [FT_FACE] = true; // all clients must support image faces
109 153
110 can_write = 1; 154 socket_ev.set (fd, EV_READ);
155 socket_ev.prio (2); // one higher than the ticker priority
156 socket_ev.start ();
111 157
112 // initialisation done, kick it! 158 // initialisation done, kick it!
113
114 {
115 packet sl;
116 sl.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);
117 send_packet (sl); 160 flush ();
118 }
119 161
120#if 0//TODO 162 reset_stats ();
121 socket_info.nconns++;
122 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
123 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
124#endif
125}
126 163
127client_socket::~client_socket () 164 clients.insert (this);
128{
129 status = Ns_Dead;
130} 165}
131 166
132/** This sets up the socket and reads all the image information into memory. */ 167client::~client ()
168{
169 clients.erase (this);
170
171 mapinfo_queue_clear ();
172 free (stats.range);
173 free (stats.title);
174 free (host);
175}
176
133void 177void
134init_ericserver (void) 178client::do_destroy ()
135{ 179{
136 struct sockaddr_in insock; 180 attachable::do_destroy ();
137 struct linger linger_opt;
138 181
139 memset (&cst_tot, 0, sizeof (CS_Stats)); 182 if (pl)
140 memset (&cst_lst, 0, sizeof (CS_Stats)); 183 pl->disconnect ();
141 cst_tot.time_start = time (NULL);
142 cst_lst.time_start = time (NULL);
143 184
144 LOG (llevDebug, "Initialize new client/server data\n"); 185 if (fd >= 0)
186 {
187 send_packet ("goodbye");
188 flush ();
145 189
146 read_client_images (); 190 close (fd);
147} 191 }
148 192
193 state = ST_DEAD;
149 194
150/******************************************************************************* 195 socket_ev.stop ();
151 *
152 * Start of functions dealing with freeing of the data.
153 *
154 ******************************************************************************/
155 196
156/** Free's all the memory that ericserver allocates. */ 197 refcnt_dec (); // socket no longer open
198}
199
157void 200void
158free_all_newserver (void) 201client::reset_stats ()
159{ 202{
160 LOG (llevDebug, "Freeing all new client/server information.\n"); 203 /* we need to clear these to -1 and not zero - otherwise,
161 free_socket_images (); 204 * if a player quits and starts a new character, we wont
162} 205 * send new values to the client, as things like exp start
163 206 * at zero.
164/**
165 * Frees a socket.
166 * Basically, all we need to do here is free all data structures that
167 * might be associated with the socket. It is up to the caller to
168 * update the list
169 */ 207 */
208 for (int i = 0; i < NUM_SKILLS; i++)
209 last_skill_exp[i] = -1;
170 210
171void 211 for (int i = 0; i < NROFATTACKS; i++)
172free_newsocket (client_socket *ns) 212 last_resist[i] = -1;
173{
174 if (ns->fd >= 0)
175 close (ns->fd);
176 213
177 if (ns->stats.range) 214 last_weapon_sp = -1;
178 free (ns->stats.range); 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;
179 225
180 if (ns->stats.title) 226 static living zero_living;
181 free (ns->stats.title); 227 last_stats = zero_living;
182
183 free (ns->host);
184
185 ns->fd = -1;
186 ns->stats.range = 0;
187 ns->stats.title = 0;
188 ns->host = 0;
189} 228}
190 229
191/** Sends the 'goodbye' command to the player, and closes connection. */ 230client *
192void
193final_free_player (player *pl)
194{
195 pl->socket->send_packet ("goodbye");
196 free_newsocket (pl->socket);
197 free_player (pl);
198}
199
200bool
201add_client_socket (int fd, const char *peername) 231client::create (int fd, const char *peername)
202{ 232{
203 if (checkbanned (NULL, peername))
204 {
205 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
206 return false;
207 }
208 else
209 {
210 client_socket *ns = new client_socket (dup (fd), peername); 233 client *ns = new client (dup (fd), peername);
211 client_sockets.push_back (ns); 234 ns->instantiate (); // effectively a nop right now
212 return true; 235 INVOKE_CLIENT (CONNECT, ns);
213 } 236 return ns;
214} 237}
215 238

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