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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 1.56 by root, Wed Apr 2 11:13:57 2008 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,
… …
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{ 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
58 { 71 {
59 struct linger linger_opt; 72 struct linger linger_opt;
60 73
61 linger_opt.l_onoff = 0; 74 linger_opt.l_onoff = 0;
62 linger_opt.l_linger = 0; 75 linger_opt.l_linger = 0;
63 76
64 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)))
65 LOG (llevError, "Cannot setsockopt(SO_LINGER): %s\n", strerror (errno)); 78 LOG (llevError, "SO_LINGER: %s\n", strerror (errno));
66 } 79 }
67 80
68 { 81 {
69 int bufsize = 65535; /*Supposed absolute upper limit */ 82 int val;
70 int oldbufsize;
71 int buflen = sizeof (int);
72 83
73 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 84#ifdef SO_RCVBUF
74 LOG (llevError, "InitConnection: Error on fcntl.\n"); 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
75 89
76 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 90#ifdef SO_SNDBUF
77 oldbufsize = 0; 91 val = SOCKET_SNDBUF;
78
79 if (oldbufsize < bufsize)
80 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 92 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
81 LOG (llevError, "InitConnection: setsockopt unable to set output buf size to %d\n", bufsize); 93 LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno));
94#endif
82 95
83 buflen = sizeof (oldbufsize); 96#ifdef IP_TOS
84 getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen); 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
85 } 133 }
86 134
135 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
136 LOG (llevError, "InitConnection: Error on fcntl.\n");
137
138 state = ST_SETUP;
87 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
88 darkness = 1; 140 darkness = 1;
89 status = Ns_Add;
90 mapx = 11; 141 mapx = 11;
91 mapy = 11; 142 mapy = 11;
92 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
93 144 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);
98 145
99 /* Do this so we don't send a face command for the client for 146 /* 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 147 * this face. Face 0 is sent to the client to say clear
101 * face information. 148 * face information.
102 */ 149 */
103 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
151 fx_want [FT_FACE] = true; // all clients must support image faces
104 152
153 socket_ev.set (fd, EV_READ);
154 socket_ev.prio (2); // one higher than the ticker priority
105 socket_ev.fd (fd); 155 socket_ev.start ();
106 156
107 // initialisation done, kick it! 157 // initialisation done, kick it!
108
109 {
110 packet sl;
111 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 158 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
112 send_packet (sl);
113 flush (); 159 flush ();
114 }
115 160
116#if 0//TODO 161 reset_stats ();
117 socket_info.nconns++; 162
118 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns; 163 clients.insert (this);
119 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
120#endif
121} 164}
122 165
123client::~client () 166client::~client ()
124{ 167{
125 status = Ns_Dead; 168 clients.erase (this);
126}
127 169
128/** This sets up the socket and reads all the image information into memory. */ 170 mapinfo_queue_clear ();
171 free (stats.range);
172 free (stats.title);
173 free (host);
174}
175
129void 176void
130init_ericserver (void) 177client::do_destroy ()
131{ 178{
132 struct sockaddr_in insock; 179 attachable::do_destroy ();
133 struct linger linger_opt;
134 180
135 memset (&cst_tot, 0, sizeof (CS_Stats)); 181 if (pl)
136 memset (&cst_lst, 0, sizeof (CS_Stats)); 182 pl->disconnect ();
137 cst_tot.time_start = time (NULL);
138 cst_lst.time_start = time (NULL);
139 183
140 LOG (llevDebug, "Initialize new client/server data\n"); 184 if (fd >= 0)
185 {
186 send_packet ("goodbye");
187 flush ();
141 188
142 read_client_images (); 189 close (fd);
143} 190 }
144 191
192 state = ST_DEAD;
145 193
146/******************************************************************************* 194 socket_ev.stop ();
147 *
148 * Start of functions dealing with freeing of the data.
149 *
150 ******************************************************************************/
151 195
152/** Free's all the memory that ericserver allocates. */ 196 refcnt_dec (); // socket no longer open
197}
198
153void 199void
154free_all_newserver (void) 200client::reset_stats ()
155{ 201{
156 LOG (llevDebug, "Freeing all new client/server information.\n"); 202 /* we need to clear these to -1 and not zero - otherwise,
157 free_socket_images (); 203 * if a player quits and starts a new character, we wont
158} 204 * send new values to the client, as things like exp start
159 205 * 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 */ 206 */
207 for (int i = 0; i < NUM_SKILLS; i++)
208 last_skill_exp[i] = -1;
166 209
167void 210 for (int i = 0; i < NROFATTACKS; i++)
168free_newsocket (client *ns) 211 last_resist[i] = -1;
169{
170 if (ns->fd >= 0)
171 close (ns->fd);
172 212
173 if (ns->stats.range) 213 last_weapon_sp = -1;
174 free (ns->stats.range); 214 last_level = -1;
215 last_stats.exp = -1;
216 last_weight = (uint32) - 1;
217 last_flags = 0;
218 last_weight = 0;
219 last_weight_limit = 0;
220 last_path_attuned = 0;
221 last_path_repelled = 0;
222 last_path_denied = 0;
223 last_speed = 0;
224 last_flags = 0;
175 225
176 if (ns->stats.title) 226 static living zero_living;
177 free (ns->stats.title); 227 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} 228}
186 229
187/** Sends the 'goodbye' command to the player, and closes connection. */ 230client *
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) 231client::create (int fd, const char *peername)
198{ 232{
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); 233 client *ns = new client (dup (fd), peername);
207 clients.push_back (ns); 234 ns->instantiate (); // effectively a nop right now
208 return true; 235 INVOKE_CLIENT (CONNECT, ns);
209 } 236 return ns;
210} 237}
211 238

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