ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/deliantra/server/socket/init.C
(Generate patch)

Comparing deliantra/server/socket/init.C (file contents):
Revision 1.20 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.50 by root, Tue Jul 24 04:55:35 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#include <unistd.h> 45#include <unistd.h>
45#include <arpa/inet.h> 46#include <arpa/inet.h>
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
46 55
47sockvec clients; 56sockvec clients;
48 57
49/** 58/**
50 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
51 * 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
52 * client. 61 * client.
53 */ 62 */
54client::client (int fd, const char *peername) 63client::client (int fd, const char *peername)
55: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
56 socket_ev (this, &client::socket_cb) 65 socket_ev (this, &client::socket_cb),
66 cmd_ev (this, &client::cmd_cb)
57{ 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
58 { 72 {
59 struct linger linger_opt; 73 struct linger linger_opt;
60 74
61 linger_opt.l_onoff = 0; 75 linger_opt.l_onoff = 0;
62 linger_opt.l_linger = 0; 76 linger_opt.l_linger = 0;
63 77
64 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)))
65 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
66 } 134 }
67 135
68 { 136 {
69 int bufsize = 65535; /*Supposed absolute upper limit */ 137 int bufsize = 65535; /*Supposed absolute upper limit */
70 int oldbufsize; 138 int oldbufsize;
… …
82 150
83 buflen = sizeof (oldbufsize); 151 buflen = sizeof (oldbufsize);
84 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 152 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
85 } 153 }
86 154
155 state = ST_SETUP;
87 mapmode = Map0Cmd; 156 mapmode = Map0Cmd;
88 darkness = 1; 157 darkness = 1;
89 status = Ns_Add;
90 mapx = 11; 158 mapx = 11;
91 mapy = 11; 159 mapy = 11;
92 itemcmd = 1; /* Default is version item1 command */ 160 itemcmd = 1; /* Default is version item1 command */
93 161 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);
98 162
99 /* 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
100 * 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
101 * face information. 165 * face information.
102 */ 166 */
103 faces_sent[0] = NS_FACESENT_FACE; 167 faces_sent[0] = true;
168 fx_want [FT_FACE] = true; // all clients must support image faces
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;
145 211
146/******************************************************************************* 212 socket_ev.suspend ();
147 * 213 cmd_ev.suspend ();
148 * Start of functions dealing with freeing of the data.
149 *
150 ******************************************************************************/
151 214
152/** Free's all the memory that ericserver allocates. */ 215 refcnt_dec (); // socket no longer open
216}
217
153void 218void
154free_all_newserver (void) 219client::reset_stats ()
155{ 220{
156 LOG (llevDebug, "Freeing all new client/server information.\n"); 221 /* we need to clear these to -1 and not zero - otherwise,
157 free_socket_images (); 222 * if a player quits and starts a new character, we wont
158} 223 * send new values to the client, as things like exp start
159 224 * at zero.
160/**
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 */ 225 */
226 for (int i = 0; i < NUM_SKILLS; i++)
227 last_skill_exp[i] = -1;
166 228
167void 229 for (int i = 0; i < NROFATTACKS; i++)
168free_newsocket (client *ns) 230 last_resist[i] = -1;
169{
170 if (ns->fd >= 0)
171 close (ns->fd);
172 231
173 if (ns->stats.range) 232 last_weapon_sp = -1;
174 free (ns->stats.range); 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;
175 244
176 if (ns->stats.title) 245 static living zero_living;
177 free (ns->stats.title); 246 last_stats = zero_living;
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} 247}
186 248
187/** Sends the 'goodbye' command to the player, and closes connection. */ 249client *
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) 250client::create (int fd, const char *peername)
198{ 251{
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); 252 client *ns = new client (dup (fd), peername);
207 clients.push_back (ns); 253 ns->instantiate (); // effectively a nop right now
208 return true; 254 INVOKE_CLIENT (CONNECT, ns);
209 } 255 return ns;
210} 256}
211 257

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines