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 (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 | * Copyright (C) 2001 Mark Wedel |
5 | * Copyright (©) 2001,2007 Mark Wedel |
6 | * Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
7 | * |
7 | * |
8 | * 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 |
9 | * 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 |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation, either version 3 of the License, or |
11 | * (at your option) any later version. |
11 | * (at your option) any later version. |
12 | * |
12 | * |
13 | * 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, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
17 | * |
17 | * |
18 | * 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 |
19 | * along with this program; if not, write to the Free Software |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 | * |
20 | * |
22 | * 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> |
23 | */ |
22 | */ |
24 | |
23 | |
25 | /** |
24 | /** |
26 | * \file |
25 | * \file |
27 | * Socket general functions |
26 | * Socket general functions |
… | |
… | |
46 | #include <unistd.h> |
45 | #include <unistd.h> |
47 | #include <arpa/inet.h> |
46 | #include <arpa/inet.h> |
48 | |
47 | |
49 | #include <algorithm> |
48 | #include <algorithm> |
50 | |
49 | |
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50 | // use relatively small values, as we do not expect to receive much, |
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51 | // and we do userspace write buffering |
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52 | // 8kb limits throughput to roughly 66kb/s |
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53 | #define SOCKET_RCVBUF 8192 |
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54 | #define SOCKET_SNDBUF 16384 |
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55 | |
51 | sockvec clients; |
56 | sockvec clients; |
52 | |
57 | |
53 | /** |
58 | /** |
54 | * Initializes a connection. Really, it just sets up the data structure, |
59 | * Initializes a connection. Really, it just sets up the data structure, |
55 | * 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 |
56 | * client. |
61 | * client. |
57 | */ |
62 | */ |
58 | client::client (int fd, const char *peername) |
63 | client::client (int fd, const char *peername) |
59 | : fd (fd), host (strdup (peername)), |
64 | : fd (fd), host (strdup (peername)), |
60 | socket_ev (this, &client::socket_cb), |
65 | socket_ev (this, &client::socket_cb), |
61 | cmd_ev (this, &client::cmd_cb), |
66 | cmd_ev (this, &client::cmd_cb) |
62 | cc_inv (this), cc_other (this) |
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63 | { |
67 | { |
64 | refcnt_inc (); // the socket is an external reference |
68 | refcnt_inc (); // the socket is an external reference |
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69 | |
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70 | mss = 1500 - 52; // 1500 typical ethernet frame, 66 typical tcp header overhead |
65 | |
71 | |
66 | { |
72 | { |
67 | struct linger linger_opt; |
73 | struct linger linger_opt; |
68 | |
74 | |
69 | linger_opt.l_onoff = 0; |
75 | linger_opt.l_onoff = 0; |
70 | linger_opt.l_linger = 0; |
76 | linger_opt.l_linger = 0; |
71 | |
77 | |
72 | 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))) |
73 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
79 | LOG (llevError, "SO_LINGER: %s\n", strerror (errno)); |
74 | } |
80 | } |
75 | |
81 | |
76 | { |
82 | { |
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83 | int val; |
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84 | |
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85 | #ifdef SO_RCVBUF |
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86 | val = SOCKET_RCVBUF; |
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87 | if (setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof (val))) |
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88 | LOG (llevError, "SO_RCVBUF: %s\n", strerror (errno)); |
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89 | #endif |
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90 | |
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91 | #ifdef SO_SNDBUF |
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92 | val = SOCKET_SNDBUF; |
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93 | if (setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof (val))) |
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94 | LOG (llevError, "SO_SNDBUF: %s\n", strerror (errno)); |
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95 | #endif |
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96 | |
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97 | #ifdef IP_TOS |
77 | int val = IPTOS_LOWDELAY; |
98 | val = IPTOS_LOWDELAY; |
78 | |
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79 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
99 | if (setsockopt (fd, IPPROTO_IP, IP_TOS, &val, sizeof (val))) |
80 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
100 | LOG (llevError, "IP_TOS: %s\n", strerror (errno)); |
81 | } |
101 | #endif |
82 | |
102 | |
83 | { |
103 | #ifdef TCP_NODELAY |
84 | int val = 1; |
104 | val = 1; |
85 | |
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86 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
105 | if (setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof (val))) |
87 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
106 | LOG (llevError, "TCP_NODELAY: %s\n", strerror (errno)); |
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107 | #endif |
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108 | |
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109 | // set some very aggressive keepalive parameters |
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110 | #ifdef TCP_KEEPIDLE |
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111 | val = 1; |
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112 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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113 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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114 | #endif |
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115 | |
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116 | #ifdef TCP_KEEPCNT |
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117 | val = 3; |
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118 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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119 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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120 | #endif |
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121 | |
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122 | #ifdef TCP_KEEPINTVL |
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123 | val = 1; |
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124 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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125 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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126 | #endif |
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127 | |
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128 | // try to find the mss value in use |
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129 | #ifdef TCP_MAXSEG |
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130 | socklen_t sl = sizeof (val); |
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131 | if (!getsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &val, &sl) && sl == sizeof (val)) |
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132 | mss = val; |
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133 | #endif |
88 | } |
134 | } |
89 | |
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90 | #ifdef __linux__ |
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91 | { |
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92 | int val; |
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93 | |
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94 | // set some very aggressive keepalive parameters |
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95 | val = 10; |
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96 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof (val))) |
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97 | LOG (llevError, "TCP_KEEPIDLE: %s\n", strerror (errno)); |
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98 | |
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99 | val = 5; |
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100 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPCNT, &val, sizeof (val))) |
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101 | LOG (llevError, "TCP_KEEPCNT: %s\n", strerror (errno)); |
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102 | |
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103 | val = 1; |
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104 | if (setsockopt (fd, IPPROTO_TCP, TCP_KEEPINTVL, &val, sizeof (val))) |
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105 | LOG (llevError, "TCP_KEEPINTVL: %s\n", strerror (errno)); |
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106 | } |
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107 | #endif |
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108 | |
135 | |
109 | { |
136 | { |
110 | int bufsize = 65535; /*Supposed absolute upper limit */ |
137 | int bufsize = 65535; /*Supposed absolute upper limit */ |
111 | int oldbufsize; |
138 | int oldbufsize; |
112 | int buflen = sizeof (int); |
139 | int buflen = sizeof (int); |
… | |
… | |
136 | /* 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 |
137 | * 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 |
138 | * face information. |
165 | * face information. |
139 | */ |
166 | */ |
140 | faces_sent[0] = true; |
167 | faces_sent[0] = true; |
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168 | fx_want [FT_FACE] = true; // all clients must support image faces |
141 | |
169 | |
142 | socket_ev.prio (PE_PRIO_NORMAL); |
170 | socket_ev.prio (PE_PRIO_NORMAL); |
143 | socket_ev.fd (fd); |
171 | socket_ev.fd (fd); |
144 | socket_ev.poll (PE_R); |
172 | socket_ev.poll (PE_R); |
145 | |
173 | |
… | |
… | |
156 | |
184 | |
157 | client::~client () |
185 | client::~client () |
158 | { |
186 | { |
159 | clients.erase (this); |
187 | clients.erase (this); |
160 | |
188 | |
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189 | mapinfo_queue_clear (); |
161 | free (stats.range); |
190 | free (stats.range); |
162 | free (stats.title); |
191 | free (stats.title); |
163 | free (host); |
192 | free (host); |
164 | } |
193 | } |
165 | |
194 | |
… | |
… | |
210 | last_weight_limit = 0; |
239 | last_weight_limit = 0; |
211 | last_path_attuned = 0; |
240 | last_path_attuned = 0; |
212 | last_path_repelled = 0; |
241 | last_path_repelled = 0; |
213 | last_path_denied = 0; |
242 | last_path_denied = 0; |
214 | last_speed = 0; |
243 | last_speed = 0; |
215 | flags = 0; |
244 | last_flags = 0; |
216 | |
245 | |
217 | static living zero_living; |
246 | static living zero_living; |
218 | last_stats = zero_living; |
247 | last_stats = zero_living; |
219 | } |
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220 | |
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221 | /** This sets up the socket and reads all the image information into memory. */ |
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222 | void |
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223 | init_ericserver (void) |
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224 | { |
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225 | cst_tot.time_start = time (NULL); |
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226 | cst_lst.time_start = time (NULL); |
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227 | |
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228 | LOG (llevDebug, "Initialize new client/server data\n"); |
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229 | } |
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230 | |
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231 | |
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232 | /******************************************************************************* |
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233 | * |
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234 | * Start of functions dealing with freeing of the data. |
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235 | * |
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236 | ******************************************************************************/ |
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237 | |
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238 | /** Free's all the memory that ericserver allocates. */ |
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239 | void |
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240 | free_all_newserver (void) |
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241 | { |
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242 | LOG (llevDebug, "Freeing all new client/server information.\n"); |
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243 | free_socket_images (); |
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244 | } |
248 | } |
245 | |
249 | |
246 | client * |
250 | client * |
247 | client::create (int fd, const char *peername) |
251 | client::create (int fd, const char *peername) |
248 | { |
252 | { |