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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.19 by root, Thu Dec 14 22:45:41 2006 UTC vs.
Revision 1.74 by root, Sun Nov 11 04:29:11 2012 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) 2001 Mark Wedel 4 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 Copyright (C) 1992 Frank Tore Johansen 5 *
6 6 * Deliantra is free software: you can redistribute it and/or modify it under
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by 7 * 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 8 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 9 * option) any later version.
11 10 *
12 This program is distributed in the hope that it will be useful, 11 * This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 14 * GNU General Public License for more details.
16 15 *
17 You should have received a copy of the GNU General Public License 16 * 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 17 * and the GNU General Public License along with this program. If not, see
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 * <http://www.gnu.org/licenses/>.
20 19 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 20 * The authors can be reached via e-mail to <support@deliantra.net>
22*/ 21 */
23 22
24/** 23/*
25 * \file
26 * Socket general functions 24 * Socket general functions
27 *
28 * \date 2003-12-02
29 *
30 * Mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c
33 */ 25 */
34
35 26
36#include <global.h> 27#include <global.h>
37#include <sproto.h> 28#include <sproto.h>
38#include <sys/types.h> 29#include <sys/types.h>
39#include <sys/time.h> 30#include <sys/time.h>
40#include <sys/socket.h> 31#include <sys/socket.h>
41#include <netinet/in.h> 32#include <netinet/in.h>
33#include <netinet/tcp.h>
34#include <netinet/ip.h>
42#include <netdb.h> 35#include <netdb.h>
43 36
44#include <unistd.h> 37#include <unistd.h>
45#include <arpa/inet.h> 38#include <arpa/inet.h>
46#include <newserver.h>
47 39
40#include <algorithm>
41
42// use relatively small values, as we do not expect to receive much,
43// and we do userspace write buffering
44// 8kb limits throughput to roughly 66kb/s
45#define SOCKET_RCVBUF 8192
46#define SOCKET_SNDBUF 16384
47
48sockvec client_sockets; 48sockvec clients;
49 49
50/** 50/**
51 * Initializes a connection. Really, it just sets up the data structure, 51 * Initializes a connection. Really, it just sets up the data structure,
52 * socket setup is handled elsewhere. We do send a version to the 52 * socket setup is handled elsewhere. We do send a version to the
53 * client. 53 * client.
54 */ 54 */
55client_socket::client_socket (int fd, const char *peername) 55client::client (int fd, const char *peername)
56: fd (fd), host (strdup (peername)), 56: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client_socket::socket_cb) 57 socket_ev (this, &client::socket_cb)
58{ 58{
59 refcnt_inc (); // the socket is an external reference
60
61 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
62
63 socket_timeout = 16.;
64
59 { 65 {
60 struct linger linger_opt; 66 struct linger linger_opt;
61 67
62 linger_opt.l_onoff = 0; 68 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0; 69 linger_opt.l_linger = 0;
64 70
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 71 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 72 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
67 } 73 }
68 74
69 { 75 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 76 int val;
71 int oldbufsize;
72 int buflen = sizeof (int);
73 77
74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 78#ifdef SO_RCVBUF
75 LOG (llevError, "InitConnection: Error on fcntl.\n"); 79 val = SOCKET_RCVBUF;
80 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
81 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
82#endif
76 83
77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 84#ifdef SO_SNDBUF
78 oldbufsize = 0; 85 val = SOCKET_SNDBUF;
79
80 if (oldbufsize < bufsize)
81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 86 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); 87 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
88#endif
83 89
84 buflen = sizeof (oldbufsize); 90#ifdef IP_TOS
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 91 val = IPTOS_LOWDELAY;
92 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
93 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
94#endif
95
96#ifdef TCP_NODELAY
97 val = 1;
98 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
99 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
100#endif
101
102 // set some very aggressive keepalive parameters
103#ifdef TCP_KEEPIDLE
104 val = 1;
105 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
106 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
107#endif
108
109#ifdef TCP_KEEPCNT
110 val = 3;
111 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
112 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
113#endif
114
115#ifdef TCP_KEEPINTVL
116 val = 1;
117 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
118 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
119#endif
120
121 // try to find the mss value in use
122#ifdef TCP_MAXSEG
123 socklen_t sl = sizeof (val);
124 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
125 mss = val;
126#endif
86 } 127 }
87 128
88 mapmode = Map0Cmd; 129 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
89 darkness = 1; 130 LOG (llevError, "InitConnection: Error on fcntl.\n");
90 status = Ns_Add; 131
132 state = ST_SETUP;
91 mapx = 11; 133 mapx = 11;
92 mapy = 11; 134 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 135 itemcmd = 1; /* Default is version item1 command */
94 136 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);
99 137
100 /* Do this so we don't send a face command for the client for 138 /* 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 139 * this face. Face 0 is sent to the client to set meta data
102 * face information. 140 * for following faces in fx.
103 */ 141 */
104 faces_sent[0] = NS_FACESENT_FACE; 142 faces_sent[0] = true;
143 fx_want [FT_FACE] = true; // all clients must support image faces
105 144
145 socket_ev.set (fd, EV_READ);
146 socket_ev.prio (2); // one higher than the ticker priority
106 socket_ev.fd (fd); 147 socket_ev.start ();
107 148
149 reset_stats ();
150
151 clients.insert (this);
152}
153
154client::~client ()
155{
156 clients.erase (this);
157
158 while (!ixface.empty ())
159 ix_pop ();
160
161 mapinfo_queue_clear ();
162 free (stats.range);
163 free (stats.title);
164 free (host);
165 free (ws_inbuf);
166}
167
168void
169client::run ()
170{
108 // initialisation done, kick it! 171 // initialisation done, kick it!
172 INVOKE_CLIENT (CONNECT, this);
109 173
110 {
111 packet sl;
112 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
113 send_packet (sl);
114 flush (); 174 flush ();
115 }
116
117#if 0//TODO
118 socket_info.nconns++;
119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
121#endif
122} 175}
123 176
124client_socket::~client_socket ()
125{
126 status = Ns_Dead;
127}
128
129/** This sets up the socket and reads all the image information into memory. */
130void 177void
131init_ericserver (void) 178client::do_destroy ()
132{ 179{
133 struct sockaddr_in insock; 180 INVOKE_CLIENT (CLIENT_DESTROY, this);
134 struct linger linger_opt; 181 attachable::do_destroy ();
135 182
136 memset (&cst_tot, 0, sizeof (CS_Stats)); 183 if (pl)
137 memset (&cst_lst, 0, sizeof (CS_Stats)); 184 pl->disconnect ();
138 cst_tot.time_start = time (NULL);
139 cst_lst.time_start = time (NULL);
140 185
141 LOG (llevDebug, "Initialize new client/server data\n"); 186 if (fd >= 0)
187 {
188 send_packet ("goodbye");
189 flush ();
142 190
143 read_client_images (); 191 close (fd);
144} 192 }
145 193
194 state = ST_DEAD;
146 195
147/******************************************************************************* 196 socket_ev.stop ();
148 *
149 * Start of functions dealing with freeing of the data.
150 *
151 ******************************************************************************/
152 197
153/** Free's all the memory that ericserver allocates. */ 198 refcnt_dec (); // socket no longer open
199}
200
154void 201void
155free_all_newserver (void) 202client::reset_stats ()
156{ 203{
157 LOG (llevDebug, "Freeing all new client/server information.\n"); 204 /* we need to clear these to -1 and not zero - otherwise,
158 free_socket_images (); 205 * if a player quits and starts a new character, we wont
159} 206 * send new values to the client, as things like exp start
160 207 * at zero.
161/**
162 * Frees a socket.
163 * Basically, all we need to do here is free all data structures that
164 * might be associated with the socket. It is up to the caller to
165 * update the list
166 */ 208 */
209 for (int i = 0; i < array_length (last_skill_exp); i++)
210 last_skill_exp[i] = -1;
167 211
168void 212 for (int i = 0; i < array_length (last_resist); i++)
169free_newsocket (client_socket *ns) 213 last_resist[i] = -1;
170{
171 if (ns->fd >= 0)
172 close (ns->fd);
173 214
174 if (ns->stats.range) 215 last_weapon_sp = -1;
175 free (ns->stats.range); 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;
176 226
177 if (ns->stats.title) 227 static living zero_living;
178 free (ns->stats.title); 228 last_stats = zero_living;
179
180 free (ns->host);
181
182 ns->fd = -1;
183 ns->stats.range = 0;
184 ns->stats.title = 0;
185 ns->host = 0;
186} 229}
187 230
188/** Sends the 'goodbye' command to the player, and closes connection. */ 231client *
189void
190final_free_player (player *pl)
191{
192 pl->socket->send_packet ("goodbye");
193 free_newsocket (pl->socket);
194 free_player (pl);
195}
196
197bool
198add_client_socket (int fd, const char *peername) 232client::create (int fd, const char *peername)
199{ 233{
200 if (checkbanned (NULL, peername))
201 {
202 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
203 return false;
204 }
205 else
206 {
207 client_socket *ns = new client_socket (dup (fd), peername); 234 client *ns = new client (dup (fd), peername);
208 client_sockets.push_back (ns);
209 return true;
210 }
211}
212 235
236 ns->instantiate (); // effectively a nop right now
237
238 return ns;
239}
240

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