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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.22 by root, Sat Dec 16 21:40:26 2006 UTC vs.
Revision 1.54 by root, Wed Nov 14 08:09:46 2007 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 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#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)
57 cmd_ev (this, &client::cmd_cb)
58{ 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
59 { 71 {
60 struct linger linger_opt; 72 struct linger linger_opt;
61 73
62 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
63 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
64 76
65 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger))) 77 if (setsockopt (fd, SOL_SOCKET, SO_LINGER, &linger_opt, sizeof (struct linger)))
66 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
79 }
80
81 {
82 int val;
83
84#ifdef SO_RCVBUF
85 val = SOCKET_RCVBUF;
86 if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val)))
87 LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno));
88#endif
89
90#ifdef SO_SNDBUF
91 val = SOCKET_SNDBUF;
92 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
93 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
94#endif
95
96#ifdef IP_TOS
97 val = IPTOS_LOWDELAY;
98 if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val)))
99 LOG (llevError, "IP_TOS: %s\n", strerror (errno));
100#endif
101
102#ifdef TCP_NODELAY
103 val = 1;
104 if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val)))
105 LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno));
106#endif
107
108 // set some very aggressive keepalive parameters
109#ifdef TCP_KEEPIDLE
110 val = 1;
111 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val)))
112 LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno));
113#endif
114
115#ifdef TCP_KEEPCNT
116 val = 3;
117 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val)))
118 LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno));
119#endif
120
121#ifdef TCP_KEEPINTVL
122 val = 1;
123 if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val)))
124 LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno));
125#endif
126
127 // try to find the mss value in use
128#ifdef TCP_MAXSEG
129 socklen_t sl = sizeof (val);
130 if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val))
131 mss = val;
132#endif
67 } 133 }
68 134
69 { 135 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 136 int bufsize = 65535; /*Supposed absolute upper limit */
71 int oldbufsize; 137 int oldbufsize;
… …
83 149
84 buflen = sizeof (oldbufsize); 150 buflen = sizeof (oldbufsize);
85 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 151 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen);
86 } 152 }
87 153
154 state = ST_SETUP;
88 mapmode = Map0Cmd; 155 mapmode = Map0Cmd;
89 darkness = 1; 156 darkness = 1;
90 status = Ns_Add;
91 mapx = 11; 157 mapx = 11;
92 mapy = 11; 158 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 159 itemcmd = 1; /* Default is version item1 command */
94 160 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
95 faces_sent = salloc<uint8> (nrofpixmaps, 0);
96 161
97 /* Do this so we don't send a face command for the client for 162 /* Do this so we don't send a face command for the client for
98 * this face. Face 0 is sent to the client to say clear 163 * this face. Face 0 is sent to the client to say clear
99 * face information. 164 * face information.
100 */ 165 */
101 faces_sent[0] = NS_FACESENT_FACE; 166 faces_sent[0] = true;
167 fx_want [FT_FACE] = true; // all clients must support image faces
102 168
103 // socket I/O is low priority 169 socket_ev.set (fd, EV_READ);
104 // we prefer to have the server run instead of handling client requests
105 socket_ev.prio (PE_PRIO_NORMAL + 1);
106 socket_ev.fd (fd); 170 socket_ev.start ();
107 socket_ev.poll (PE_R);
108
109 // command handling is even lower priority
110 // that way no client can monopolise the server
111 cmd_ev.prio (PE_PRIO_NORMAL + 2);
112 171
113 // initialisation done, kick it! 172 // initialisation done, kick it!
114 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 173 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
115 flush (); 174 flush ();
116 175
117#if 0//TODO 176 reset_stats ();
118 socket_info.nconns++; 177
119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 178 clients.insert (this);
120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
121#endif
122} 179}
123 180
124client::~client () 181client::~client ()
125{ 182{
126 if (pl) 183 clients.erase (this);
127 pl->socket = 0;
128 184
129 if (fd >= 0) 185 mapinfo_queue_clear ();
130 close (fd);
131
132 free (faces_sent);
133 free (stats.range); 186 free (stats.range);
134 free (stats.title); 187 free (stats.title);
135 free (host); 188 free (host);
136} 189}
137 190
138void 191void
139client::destroy () 192client::do_destroy ()
140{ 193{
141 status = Ns_Dead; 194 attachable::do_destroy ();
195
196 if (pl)
197 pl->disconnect ();
198
199 if (fd >= 0)
200 {
201 send_packet ("goodbye");
202 flush ();
203
204 close (fd);
205 }
206
207 state = ST_DEAD;
208
142 socket_ev.suspend (); 209 socket_ev.stop ();
143 cmd_ev.suspend ();
144}
145 210
146/** This sets up the socket and reads all the image information into memory. */ 211 refcnt_dec (); // socket no longer open
212}
213
147void 214void
148init_ericserver (void) 215client::reset_stats ()
149{ 216{
150 cst_tot.time_start = time (NULL); 217 /* we need to clear these to -1 and not zero - otherwise,
151 cst_lst.time_start = time (NULL); 218 * if a player quits and starts a new character, we wont
219 * send new values to the client, as things like exp start
220 * at zero.
221 */
222 for (int i = 0; i < NUM_SKILLS; i++)
223 last_skill_exp[i] = -1;
152 224
153 LOG (llevDebug, "Initialize new client/server data\n"); 225 for (int i = 0; i < NROFATTACKS; i++)
226 last_resist[i] = -1;
154 227
155 read_client_images (); 228 last_weapon_sp = -1;
156} 229 last_level = -1;
230 last_stats.exp = -1;
231 last_weight = (uint32) - 1;
232 last_flags = 0;
233 last_weight = 0;
234 last_weight_limit = 0;
235 last_path_attuned = 0;
236 last_path_repelled = 0;
237 last_path_denied = 0;
238 last_speed = 0;
239 last_flags = 0;
157 240
158 241 static living zero_living;
159/******************************************************************************* 242 last_stats = zero_living;
160 *
161 * Start of functions dealing with freeing of the data.
162 *
163 ******************************************************************************/
164
165/** Free's all the memory that ericserver allocates. */
166void
167free_all_newserver (void)
168{
169 LOG (llevDebug, "Freeing all new client/server information.\n");
170 free_socket_images ();
171} 243}
172 244
173/** Sends the 'goodbye' command to the player, and closes connection. */ 245client *
174void
175final_free_player (player *pl)
176{
177 free_player (pl);
178}
179
180bool
181add_client (int fd, const char *peername) 246client::create (int fd, const char *peername)
182{ 247{
183 if (checkbanned (NULL, peername))
184 {
185 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
186 return false;
187 }
188 else
189 {
190 client *ns = new client (dup (fd), peername); 248 client *ns = new client (dup (fd), peername);
191 clients.push_back (ns); 249 ns->instantiate (); // effectively a nop right now
192 return true; 250 INVOKE_CLIENT (CONNECT, ns);
193 } 251 return ns;
194} 252}
195 253

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