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Comparing deliantra/server/socket/init.C (file contents):
Revision 1.19 by root, Thu Dec 14 22:45:41 2006 UTC vs.
Revision 1.55 by root, Wed Nov 14 10:12:45 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>
46#include <newserver.h>
47 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
48sockvec client_sockets; 56sockvec clients;
49 57
50/** 58/**
51 * Initializes a connection. Really, it just sets up the data structure, 59 * Initializes a connection. Really, it just sets up the data structure,
52 * 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
53 * client. 61 * client.
54 */ 62 */
55client_socket::client_socket (int fd, const char *peername) 63client::client (int fd, const char *peername)
56: fd (fd), host (strdup (peername)), 64: fd (fd), host (strdup (peername)),
57 socket_ev (this, &client_socket::socket_cb) 65 socket_ev (this, &client::socket_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));
67 } 79 }
68 80
69 { 81 {
70 int bufsize = 65535; /*Supposed absolute upper limit */ 82 int val;
71 int oldbufsize;
72 int buflen = sizeof (int);
73 83
74 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1) 84#ifdef SO_RCVBUF
75 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
76 89
77 if (getsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldbufsize, (socklen_t *) & buflen) == -1) 90#ifdef SO_SNDBUF
78 oldbufsize = 0; 91 val = SOCKET_SNDBUF;
79
80 if (oldbufsize < bufsize)
81 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, (char *) &bufsize, sizeof (&bufsize))) 92 if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val)))
82 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
83 95
84 buflen = sizeof (oldbufsize); 96#ifdef IP_TOS
85 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
86 } 133 }
87 134
135 if (fcntl (fd, F_SETFL, O_NONBLOCK) == -1)
136 LOG (llevError, "InitConnection: Error on fcntl.\n");
137
138 state = ST_SETUP;
88 mapmode = Map0Cmd; 139 mapmode = Map0Cmd;
89 darkness = 1; 140 darkness = 1;
90 status = Ns_Add;
91 mapx = 11; 141 mapx = 11;
92 mapy = 11; 142 mapy = 11;
93 itemcmd = 1; /* Default is version item1 command */ 143 itemcmd = 1; /* Default is version item1 command */
94 144 max_rate = 100000 / (1000000 / MAX_TIME); // ~1mbit is assumed per default
95 faces_sent_len = nrofpixmaps;
96 faces_sent = (uint8 *)calloc (nrofpixmaps, sizeof (*faces_sent));
97 if (!faces_sent)
98 fatal (OUT_OF_MEMORY);
99 145
100 /* 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
101 * 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
102 * face information. 148 * face information.
103 */ 149 */
104 faces_sent[0] = NS_FACESENT_FACE; 150 faces_sent[0] = true;
151 fx_want [FT_FACE] = true; // all clients must support image faces
105 152
153 socket_ev.set (fd, EV_READ);
106 socket_ev.fd (fd); 154 socket_ev.start ();
107 155
108 // initialisation done, kick it! 156 // initialisation done, kick it!
109
110 {
111 packet sl;
112 sl.printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO); 157 send_packet_printf ("version %d %d %s\n", VERSION_CS, VERSION_SC, VERSION_INFO);
113 send_packet (sl);
114 flush (); 158 flush ();
115 }
116 159
117#if 0//TODO 160 reset_stats ();
118 socket_info.nconns++;
119 if (socket_info.nconns > cst_tot.max_conn) cst_tot.max_conn = socket_info.nconns;
120 if (socket_info.nconns > cst_lst.max_conn) cst_lst.max_conn = socket_info.nconns;
121#endif
122}
123 161
124client_socket::~client_socket () 162 clients.insert (this);
125{
126 status = Ns_Dead;
127} 163}
128 164
129/** This sets up the socket and reads all the image information into memory. */ 165client::~client ()
166{
167 clients.erase (this);
168
169 mapinfo_queue_clear ();
170 free (stats.range);
171 free (stats.title);
172 free (host);
173}
174
130void 175void
131init_ericserver (void) 176client::do_destroy ()
132{ 177{
133 struct sockaddr_in insock; 178 attachable::do_destroy ();
134 struct linger linger_opt;
135 179
136 memset (&cst_tot, 0, sizeof (CS_Stats)); 180 if (pl)
137 memset (&cst_lst, 0, sizeof (CS_Stats)); 181 pl->disconnect ();
138 cst_tot.time_start = time (NULL);
139 cst_lst.time_start = time (NULL);
140 182
141 LOG (llevDebug, "Initialize new client/server data\n"); 183 if (fd >= 0)
184 {
185 send_packet ("goodbye");
186 flush ();
142 187
143 read_client_images (); 188 close (fd);
144} 189 }
145 190
191 state = ST_DEAD;
146 192
147/******************************************************************************* 193 socket_ev.stop ();
148 *
149 * Start of functions dealing with freeing of the data.
150 *
151 ******************************************************************************/
152 194
153/** Free's all the memory that ericserver allocates. */ 195 refcnt_dec (); // socket no longer open
196}
197
154void 198void
155free_all_newserver (void) 199client::reset_stats ()
156{ 200{
157 LOG (llevDebug, "Freeing all new client/server information.\n"); 201 /* we need to clear these to -1 and not zero - otherwise,
158 free_socket_images (); 202 * if a player quits and starts a new character, we wont
159} 203 * send new values to the client, as things like exp start
160 204 * at zero.
161/**
162 * Frees a socket.
163 * Basically, all we need to do here is free all data structures that
164 * might be associated with the socket. It is up to the caller to
165 * update the list
166 */ 205 */
206 for (int i = 0; i < NUM_SKILLS; i++)
207 last_skill_exp[i] = -1;
167 208
168void 209 for (int i = 0; i < NROFATTACKS; i++)
169free_newsocket (client_socket *ns) 210 last_resist[i] = -1;
170{
171 if (ns->fd >= 0)
172 close (ns->fd);
173 211
174 if (ns->stats.range) 212 last_weapon_sp = -1;
175 free (ns->stats.range); 213 last_level = -1;
214 last_stats.exp = -1;
215 last_weight = (uint32) - 1;
216 last_flags = 0;
217 last_weight = 0;
218 last_weight_limit = 0;
219 last_path_attuned = 0;
220 last_path_repelled = 0;
221 last_path_denied = 0;
222 last_speed = 0;
223 last_flags = 0;
176 224
177 if (ns->stats.title) 225 static living zero_living;
178 free (ns->stats.title); 226 last_stats = zero_living;
179
180 free (ns->host);
181
182 ns->fd = -1;
183 ns->stats.range = 0;
184 ns->stats.title = 0;
185 ns->host = 0;
186} 227}
187 228
188/** Sends the 'goodbye' command to the player, and closes connection. */ 229client *
189void
190final_free_player (player *pl)
191{
192 pl->socket->send_packet ("goodbye");
193 free_newsocket (pl->socket);
194 free_player (pl);
195}
196
197bool
198add_client_socket (int fd, const char *peername) 230client::create (int fd, const char *peername)
199{ 231{
200 if (checkbanned (NULL, peername))
201 {
202 LOG (llevInfo, "Banned host tried to connect: [%s]\n", peername);
203 return false;
204 }
205 else
206 {
207 client_socket *ns = new client_socket (dup (fd), peername); 232 client *ns = new client (dup (fd), peername);
208 client_sockets.push_back (ns); 233 ns->instantiate (); // effectively a nop right now
209 return true; 234 INVOKE_CLIENT (CONNECT, ns);
210 } 235 return ns;
211} 236}
212 237

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