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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.17 by root, Thu Dec 14 20:39:54 2006 UTC vs.
Revision 1.51 by root, Fri Aug 24 00:26:10 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3 3 *
4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT 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 * Crossfire TRT 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 author can be reached via e-mail to <crossfire@schmorp.de> 21 * The authors 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)),
62 socket_ev (this, &client_socket::socket_cb) 65 socket_ev (this, &client::socket_cb),
66 cmd_ev (this, &client::cmd_cb)
63{ 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
64 { 72 {
65 struct linger linger_opt; 73 struct linger linger_opt;
66 74
67 linger_opt.l_onoff = 0; 75 linger_opt.l_onoff = 0;
68 linger_opt.l_linger = 0; 76 linger_opt.l_linger = 0;
69 77
70 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 78 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
71 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 79 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
80 }
81
82 {
83 int val;
84
85#ifdef SO_RCVBUF
86 val = SOCKET_RCVBUF;
87 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
88 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
89#endif
90
91#ifdef SO_SNDBUF
92 val = SOCKET_SNDBUF;
93 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
94 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
95#endif
96
97#ifdef IP_TOS
98 val = IPTOS_LOWDELAY;
99 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
100 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
101#endif
102
103#ifdef TCP_NODELAY
104 val = 1;
105 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
106 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
107#endif
108
109 // set some very aggressive keepalive parameters
110#ifdef TCP_KEEPIDLE
111 val = 1;
112 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
113 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
114#endif
115
116#ifdef TCP_KEEPCNT
117 val = 3;
118 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
119 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
120#endif
121
122#ifdef TCP_KEEPINTVL
123 val = 1;
124 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
125 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
126#endif
127
128 // try to find the mss value in use
129#ifdef TCP_MAXSEG
130 socklen_t sl = sizeof (val);
131 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
132 mss = val;
133#endif
72 } 134 }
73 135
74 { 136 {
75 int bufsize = 65535; /*Supposed absolute upper limit */ 137 int bufsize = 65535; /*Supposed absolute upper limit */
76 int oldbufsize; 138 int oldbufsize;
… …
88 150
89 buflen = sizeof (oldbufsize); 151 buflen = sizeof (oldbufsize);
90 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 152 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
91 } 153 }
92 154
155 state = ST_SETUP;
93 mapmode = Map0Cmd; 156 mapmode = Map0Cmd;
94 darkness = 1; 157 darkness = 1;
95 status = Ns_Add;
96 mapx = 11; 158 mapx = 11;
97 mapy = 11; 159 mapy = 11;
98 itemcmd = 1; /* Default is version item1 command */ 160 itemcmd = 1; /* Default is version item1 command */
99 161 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
100 faces_sent_len = nrofpixmaps;
101 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
102 if (!faces_sent)
103 fatal (OUT_OF_MEMORY);
104 162
105 /* Do this so we don't send a face command for the client for 163 /* Do this so we don't send a face command for the client for
106 * this face. Face 0 is sent to the client to say clear 164 * this face. Face 0 is sent to the client to say clear
107 * face information. 165 * face information.
108 */ 166 */
109 faces_sent[0] = NS_FACESENT_FACE; 167 faces_sent[0] = true;
168 fx_want [FT_FACE] = true; // all clients must support image faces
110 169
111 socket_ev.fd (fd).poll (PE_W).start (); 170 socket_ev.prio (PE_PRIO_NORMAL);
171 socket_ev.fd (fd);
172 socket_ev.poll (PE_R);
173
174 cmd_ev.prio (PE_PRIO_NORMAL);
112 175
113 // initialisation done, kick it! 176 // initialisation done, kick it!
114
115 {
116 packet sl;
117 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 177 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
118 send_packet (sl); 178 flush ();
119 }
120 179
121#if 0//TODO 180 reset_stats ();
122 socket_info.nconns++;
123 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
124 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
125#endif
126}
127 181
128client_socket::~client_socket () 182 clients.insert (this);
129{
130 status = Ns_Dead;
131} 183}
132 184
133/** This sets up the socket and reads all the image information into memory. */ 185client::~client ()
186{
187 clients.erase (this);
188
189 mapinfo_queue_clear ();
190 free (stats.range);
191 free (stats.title);
192 free (host);
193}
194
134void 195void
135init_ericserver (void) 196client::do_destroy ()
136{ 197{
137 struct sockaddr_in insock; 198 attachable::do_destroy ();
138 struct linger linger_opt;
139 199
140 memset (&cst_tot, 0, sizeof (CS_Stats)); 200 if (pl)
141 memset (&cst_lst, 0, sizeof (CS_Stats)); 201 pl->disconnect ();
142 cst_tot.time_start = time (NULL);
143 cst_lst.time_start = time (NULL);
144 202
145 LOG (llevDebug, "Initialize new client/server data\n"); 203 if (fd >= 0)
204 {
205 send_packet ("goodbye");
206 flush ();
146 207
147 read_client_images (); 208 close (fd);
148} 209 }
149 210
211 state = ST_DEAD;
150 212
151/******************************************************************************* 213 socket_ev.suspend ();
152 * 214 cmd_ev.suspend ();
153 * Start of functions dealing with freeing of the data.
154 *
155 ******************************************************************************/
156 215
157/** Free's all the memory that ericserver allocates. */ 216 refcnt_dec (); // socket no longer open
217}
218
158void 219void
159free_all_newserver (void) 220client::reset_stats ()
160{ 221{
161 LOG (llevDebug, "Freeing all new client/server information.\n"); 222 /* we need to clear these to -1 and not zero - otherwise,
162 free_socket_images (); 223 * if a player quits and starts a new character, we wont
163} 224 * send new values to the client, as things like exp start
164 225 * at zero.
165/**
166 * Frees a socket.
167 * Basically, all we need to do here is free all data structures that
168 * might be associated with the socket. It is up to the caller to
169 * update the list
170 */ 226 */
227 for (int i = 0; i < NUM_SKILLS; i++)
228 last_skill_exp[i] = -1;
171 229
172void 230 for (int i = 0; i < NROFATTACKS; i++)
173free_newsocket (client_socket *ns) 231 last_resist[i] = -1;
174{
175 if (ns->fd >= 0)
176 close (ns->fd);
177 232
178 if (ns->stats.range) 233 last_weapon_sp = -1;
179 free (ns->stats.range); 234 last_level = -1;
235 last_stats.exp = -1;
236 last_weight = (uint32) - 1;
237 last_flags = 0;
238 last_weight = 0;
239 last_weight_limit = 0;
240 last_path_attuned = 0;
241 last_path_repelled = 0;
242 last_path_denied = 0;
243 last_speed = 0;
244 last_flags = 0;
180 245
181 if (ns->stats.title) 246 static living zero_living;
182 free (ns->stats.title); 247 last_stats = zero_living;
183
184 free (ns->host);
185
186 ns->fd = -1;
187 ns->stats.range = 0;
188 ns->stats.title = 0;
189 ns->host = 0;
190} 248}
191 249
192/** Sends the 'goodbye' command to the player, and closes connection. */ 250client *
193void
194final_free_player (player *pl)
195{
196 pl->socket->send_packet ("goodbye");
197 free_newsocket (pl->socket);
198 free_player (pl);
199}
200
201bool
202add_client_socket (int fd, const char *peername) 251client::create (int fd, const char *peername)
203{ 252{
204 if (checkbanned (NULL, peername))
205 {
206 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
207 return false;
208 }
209 else
210 {
211 client_socket *ns = new client_socket (dup (fd), peername); 253 client *ns = new client (dup (fd), peername);
212 client_sockets.push_back (ns); 254 ns->instantiate (); // effectively a nop right now
213 return true; 255 INVOKE_CLIENT (CONNECT, ns);
214 } 256 return ns;
215} 257}
216 258

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