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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.20 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.48 by root, Sat Jun 9 23:18:17 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
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 it
8 it under the terms of the GNU General Public License as published by 9 * under the terms of the GNU General Public License as published by the Free
9 the Free Software Foundation; either version 2 of the License, or 10 * Software Foundation; either version 2 of the License, or (at your option)
10 (at your option) any later version. 11 * 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, but
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 GNU General Public License for more details. 16 * 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 along
18 along with this program; if not, write to the Free Software 19 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 <crossfire@schmorp.de>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Socket general functions 27 * Socket general functions
27 * 28 *
… …
29 * 30 *
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),
67 cmd_ev (this, &client::cmd_cb)
57{ 68{
69 refcnt_inc (); // the socket is an external reference
70
71 mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead
72
58 { 73 {
59 struct linger linger_opt; 74 struct linger linger_opt;
60 75
61 linger_opt.l_onoff = 0; 76 linger_opt.l_onoff = 0;
62 linger_opt.l_linger = 0; 77 linger_opt.l_linger = 0;
63 78
64 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)))
65 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 80 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
81 }
82
83 {
84 int val;
85
86#ifdef SO_RCVBUF
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
91
92#ifdef SO_SNDBUF
93 val = SOCKET_SNDBUF;
94 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
95 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
96#endif
97
98#ifdef IP_TOS
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
66 } 135 }
67 136
68 { 137 {
69 int bufsize = 65535; /*Supposed absolute upper limit */ 138 int bufsize = 65535; /*Supposed absolute upper limit */
70 int oldbufsize; 139 int oldbufsize;
… …
82 151
83 buflen = sizeof (oldbufsize); 152 buflen = sizeof (oldbufsize);
84 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 153 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
85 } 154 }
86 155
156 state = ST_SETUP;
87 mapmode = Map0Cmd; 157 mapmode = Map0Cmd;
88 darkness = 1; 158 darkness = 1;
89 status = Ns_Add;
90 mapx = 11; 159 mapx = 11;
91 mapy = 11; 160 mapy = 11;
92 itemcmd = 1; /* Default is version item1 command */ 161 itemcmd = 1; /* Default is version item1 command */
93 162 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
94 faces_sent_len = nrofpixmaps;
95 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
96 if (!faces_sent)
97 fatal (OUT_OF_MEMORY);
98 163
99 /* Do this so we don't send a face command for the client for 164 /* Do this so we don't send a face command for the client for
100 * this face. Face 0 is sent to the client to say clear 165 * this face. Face 0 is sent to the client to say clear
101 * face information. 166 * face information.
102 */ 167 */
103 faces_sent[0] = NS_FACESENT_FACE; 168 faces_sent[0] = true;
104 169
170 socket_ev.prio (PE_PRIO_NORMAL);
105 socket_ev.fd (fd); 171 socket_ev.fd (fd);
172 socket_ev.poll (PE_R);
173
174 cmd_ev.prio (PE_PRIO_NORMAL);
106 175
107 // initialisation done, kick it! 176 // initialisation done, kick it!
108
109 {
110 packet sl;
111 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);
112 send_packet (sl);
113 flush (); 178 flush ();
114 }
115 179
116#if 0//TODO 180 reset_stats ();
117 socket_info.nconns++; 181
118 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 182 clients.insert (this);
119 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
120#endif
121} 183}
122 184
123client::~client () 185client::~client ()
124{ 186{
125 status = Ns_Dead; 187 clients.erase (this);
126}
127 188
128/** This sets up the socket and reads all the image information into memory. */ 189 free (stats.range);
190 free (stats.title);
191 free (host);
192}
193
129void 194void
130init_ericserver (void) 195client::do_destroy ()
131{ 196{
132 struct sockaddr_in insock; 197 attachable::do_destroy ();
133 struct linger linger_opt;
134 198
135 memset (&cst_tot, 0, sizeof (CS_Stats)); 199 if (pl)
136 memset (&cst_lst, 0, sizeof (CS_Stats)); 200 pl->disconnect ();
137 cst_tot.time_start = time (NULL);
138 cst_lst.time_start = time (NULL);
139 201
140 LOG (llevDebug, "Initialize new client/server data\n"); 202 if (fd >= 0)
203 {
204 send_packet ("goodbye");
205 flush ();
141 206
142 read_client_images (); 207 close (fd);
143} 208 }
144 209
210 state = ST_DEAD;
211
212 socket_ev.suspend ();
213 cmd_ev.suspend ();
214
215 refcnt_dec (); // socket no longer open
216}
217
218void
219client::reset_stats ()
220{
221 /* we need to clear these to -1 and not zero - otherwise,
222 * if a player quits and starts a new character, we wont
223 * send new values to the client, as things like exp start
224 * at zero.
225 */
226 for (int i = 0; i < NUM_SKILLS; i++)
227 last_skill_exp[i] = -1;
228
229 for (int i = 0; i < NROFATTACKS; i++)
230 last_resist[i] = -1;
231
232 last_weapon_sp = -1;
233 last_level = -1;
234 last_stats.exp = -1;
235 last_weight = (uint32) - 1;
236 last_flags = 0;
237 last_weight = 0;
238 last_weight_limit = 0;
239 last_path_attuned = 0;
240 last_path_repelled = 0;
241 last_path_denied = 0;
242 last_speed = 0;
243 last_flags = 0;
244
245 static living zero_living;
246 last_stats = zero_living;
247}
145 248
146/******************************************************************************* 249/*******************************************************************************
147 * 250 *
148 * Start of functions dealing with freeing of the data. 251 * Start of functions dealing with freeing of the data.
149 * 252 *
… …
155{ 258{
156 LOG (llevDebug, "Freeing all new client/server information.\n"); 259 LOG (llevDebug, "Freeing all new client/server information.\n");
157 free_socket_images (); 260 free_socket_images ();
158} 261}
159 262
160/** 263client *
161 * Frees a socket.
162 * Basically, all we need to do here is free all data structures that
163 * might be associated with the socket. It is up to the caller to
164 * update the list
165 */
166
167void
168free_newsocket (client *ns)
169{
170 if (ns->fd >= 0)
171 close (ns->fd);
172
173 if (ns->stats.range)
174 free (ns->stats.range);
175
176 if (ns->stats.title)
177 free (ns->stats.title);
178
179 free (ns->host);
180
181 ns->fd = -1;
182 ns->stats.range = 0;
183 ns->stats.title = 0;
184 ns->host = 0;
185}
186
187/** Sends the 'goodbye' command to the player, and closes connection. */
188void
189final_free_player (player *pl)
190{
191 pl->socket->send_packet ("goodbye");
192 free_newsocket (pl->socket);
193 free_player (pl);
194}
195
196bool
197add_client (int fd, const char *peername) 264client::create (int fd, const char *peername)
198{ 265{
199 if (checkbanned (NULL, peername))
200 {
201 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
202 return false;
203 }
204 else
205 {
206 client *ns = new client (dup (fd), peername); 266 client *ns = new client (dup (fd), peername);
207 clients.push_back (ns); 267 ns->instantiate (); // effectively a nop right now
208 return true; 268 INVOKE_CLIENT (CONNECT, ns);
209 } 269 return ns;
210} 270}
211 271

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