| 1 | /* |
1 | /* |
| 2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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 (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
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|
| 6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
|
|
| 7 | * |
5 | * |
| 8 | * Deliantra is free software: you can redistribute it and/or modify |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
| 9 | * it under the terms of the GNU General Public License as published by |
7 | * the terms of the Affero GNU General Public License as published by the |
| 10 | * the Free Software Foundation, either version 3 of the License, or |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
| 11 | * (at your option) any later version. |
9 | * option) any later version. |
| 12 | * |
10 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
11 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
14 | * GNU General Public License for more details. |
| 17 | * |
15 | * |
| 18 | * You should have received a copy of the GNU General Public License |
16 | * You should have received a copy of the Affero GNU General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
17 | * and the GNU General Public License along with this program. If not, see |
|
|
18 | * <http://www.gnu.org/licenses/>. |
| 20 | * |
19 | * |
| 21 | * The authors can be reached via e-mail to <support@deliantra.net> |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
| 22 | */ |
21 | */ |
| 23 | |
22 | |
| 24 | /** |
23 | /** |
| 25 | * \file |
24 | * \file |
| … | |
… | |
| 42 | #include <netdb.h> |
41 | #include <netdb.h> |
| 43 | |
42 | |
| 44 | #include <unistd.h> |
43 | #include <unistd.h> |
| 45 | #include <arpa/inet.h> |
44 | #include <arpa/inet.h> |
| 46 | |
45 | |
| 47 | #include <loader.h> |
|
|
| 48 | |
|
|
| 49 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
46 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
| 50 | |
47 | |
| 51 | #define MAX_QUEUE_DEPTH 50 |
48 | #define MAX_QUEUE_DEPTH 50 |
| 52 | #define MAX_QUEUE_BACKLOG 3. |
49 | #define MAX_QUEUE_BACKLOG 3. |
| 53 | |
50 | |
| 54 | // disconnect a socket after this many seconds without an ack |
|
|
| 55 | #define SOCKET_TIMEOUT 16. |
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| 56 | |
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|
| 57 | void |
51 | void |
| 58 | client::reset_state () |
52 | client::reset_state () |
| 59 | { |
53 | { |
| 60 | if (!pl) |
54 | if (!pl) |
| 61 | return; |
55 | return; |
| … | |
… | |
| 69 | { |
63 | { |
| 70 | tstamp stamp = NOW; |
64 | tstamp stamp = NOW; |
| 71 | |
65 | |
| 72 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
66 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
| 73 | { |
67 | { |
| 74 | //TODO: just disconnect here? |
|
|
| 75 | reset_state (); |
68 | reset_state (); |
| 76 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
69 | send_packet_printf ("msg %d log command queue overflow, ignoring.", NDI_RED); |
| 77 | } |
70 | } |
| 78 | else |
71 | else |
| 79 | { |
72 | { |
| 80 | cmd_queue.resize (cmd_queue.size () + 1); |
73 | cmd_queue.resize (cmd_queue.size () + 1); |
| 81 | command &cmd = cmd_queue.back (); |
74 | command &cmd = cmd_queue.back (); |
| … | |
… | |
| 95 | { |
88 | { |
| 96 | command &cmd = cmd_queue.front (); |
89 | command &cmd = cmd_queue.front (); |
| 97 | |
90 | |
| 98 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
91 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
| 99 | { |
92 | { |
| 100 | reset_state (); |
93 | reset_state (); // the command might actually reset some movement state etc. |
| 101 | send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
94 | |
|
|
95 | if (pl) |
|
|
96 | pl->failmsg ( |
|
|
97 | "Cannot keep up with your commands, ignoring them! " |
|
|
98 | "H<Your character cannot keep up with the instructions you give G<him|her>. " |
|
|
99 | "Try issuing commands slower, or, if G<he|she> is incapacitated (paralyzed and so on), " |
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100 | "wait till your character can act again.\n\nIf G<he|she> is permanently stuck, then " |
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101 | "try the B<suicide> command (or use B<chat> to ask somebody to B<invite> you out).>" |
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|
102 | ); |
| 102 | } |
103 | } |
| 103 | else |
104 | else |
| 104 | execute (cmd.handler, cmd.data, cmd.datalen); |
105 | execute (cmd.handler, cmd.data, cmd.datalen); |
| 105 | |
106 | |
| 106 | sfree<char> (cmd.data, cmd.datalen + 1); |
107 | sfree<char> (cmd.data, cmd.datalen + 1); |
| … | |
… | |
| 112 | } |
113 | } |
| 113 | |
114 | |
| 114 | void |
115 | void |
| 115 | client::tick () |
116 | client::tick () |
| 116 | { |
117 | { |
| 117 | if (!pl || destroyed ()) |
118 | if (destroyed ()) |
| 118 | return; |
119 | return; |
| 119 | |
120 | |
|
|
121 | if (pl) |
|
|
122 | { |
|
|
123 | pl->dirty = true; |
|
|
124 | |
| 120 | /* Update the players stats once per tick. More efficient than |
125 | /* Update the players stats once per tick. More efficient than |
| 121 | * sending them whenever they change, and probably just as useful |
126 | * sending them whenever they change, and probably just as useful |
| 122 | */ |
127 | */ |
|
|
128 | pl->need_updated_stats (); |
| 123 | esrv_update_stats (pl); |
129 | esrv_update_stats (pl); |
| 124 | |
130 | |
|
|
131 | if (pl->ns->update_spells) |
|
|
132 | esrv_update_spells (pl); |
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133 | |
| 125 | sint32 weight = pl->ob->client_weight (); |
134 | sint32 weight = pl->ob->client_weight (); |
| 126 | |
135 | |
| 127 | if (last_weight != weight) |
136 | if (last_weight != weight) |
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|
137 | { |
|
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138 | pl->ob->update_stats (); |
| 128 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
139 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
|
|
140 | } |
| 129 | |
141 | |
| 130 | draw_client_map (pl); |
142 | draw_client_map (pl); |
| 131 | |
143 | |
| 132 | if (update_look) |
144 | if (update_look) |
| 133 | esrv_draw_look (pl); |
145 | esrv_draw_look (pl); |
| 134 | |
146 | |
| 135 | mapinfo_queue_run (); |
147 | mapinfo_queue_run (); |
|
|
148 | } |
| 136 | |
149 | |
| 137 | #if HAVE_TCP_INFO |
150 | #if HAVE_TCP_INFO |
| 138 | // check time of last ack, and, if too old, kill connection |
151 | // check time of last ack, and, if too old, kill connection |
| 139 | socklen_t len = sizeof (tcpi); |
152 | socklen_t len = sizeof (tcpi); |
| 140 | |
153 | |
| … | |
… | |
| 153 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
166 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
| 154 | |
167 | |
| 155 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
168 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
| 156 | #endif |
169 | #endif |
| 157 | |
170 | |
| 158 | // fast-time-out a player by checking for missign acks |
171 | // fast-time-out a player by checking for missing acks |
| 159 | // do this only when player is active |
172 | // do this only when player is active |
| 160 | if (pl && pl->active |
173 | if (pl && pl->active |
| 161 | && tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
174 | && tcpi.tcpi_last_ack_recv > int (socket_timeout * 1000)) |
| 162 | { |
175 | { |
| 163 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
176 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
| 164 | write_outputbuffer (); |
177 | write_outputbuffer (); |
| 165 | |
178 | |
| 166 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
179 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
| … | |
… | |
| 168 | destroy (); |
181 | destroy (); |
| 169 | } |
182 | } |
| 170 | } |
183 | } |
| 171 | #endif |
184 | #endif |
| 172 | |
185 | |
|
|
186 | // limit budget surplus/deficit by one mss, add per-tick budget |
| 173 | rate_avail = min (max_rate + mss, rate_avail + max_rate); |
187 | rate_avail = min (rate_avail, mss) + max_rate; |
| 174 | |
188 | |
| 175 | int max_send = rate_avail; |
189 | int max_send = rate_avail; |
| 176 | |
190 | |
| 177 | #if HAVE_TCP_INFO |
191 | #if HAVE_TCP_INFO |
| 178 | // further restrict the available bandwidth by the excess bandwidth available |
192 | // further restrict the available bandwidth by the excess bandwidth available |
| 179 | max_send = min (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
193 | min_it (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
| 180 | #endif |
194 | #endif |
| 181 | |
195 | |
| 182 | // if we can split images, round to next-lowest mss |
196 | // round to next-lowest mss |
| 183 | if (fxix) max_send -= max_send % mss; |
197 | max_send -= max_send % mss; |
| 184 | |
198 | |
| 185 | if (ixface.empty ()) |
199 | if (ixface.empty ()) |
| 186 | { |
200 | { |
| 187 | // regularly send a new face when queue is empty |
201 | // regularly send a new face when queue is empty |
| 188 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
202 | if (bg_scrub && !--bg_scrub) |
| 189 | while (scrub_idx < faces.size () - 1) |
203 | while (scrub_idx < faces.size () - 1) |
| 190 | { |
204 | { |
| 191 | ++scrub_idx; |
205 | ++scrub_idx; |
| 192 | |
206 | |
| 193 | if (!faces_sent [scrub_idx]) |
207 | if (!faces_sent [scrub_idx]) |
| 194 | if (faceinfo *f = face_info (scrub_idx)) |
208 | if (faceinfo *f = face_info (scrub_idx)) |
| 195 | if (f->type == FT_FACE || f->type == FT_SOUND) // only scrub faces and sounds for now |
209 | if (f->type == FT_IMAGE || f->type == FT_SOUND) // only scrub faces and sounds for now |
| 196 | { |
210 | { |
| 197 | send_face (scrub_idx, -120); |
211 | send_face (scrub_idx, -120); |
| 198 | flush_fx (); |
212 | flush_fx (); |
| 199 | |
213 | |
| 200 | bg_scrub = 1; // send up to one fx per tick, unless an image was requested |
214 | bg_scrub = 1; // send up to one fx per tick, unless an image was requested |
| … | |
… | |
| 213 | if (avail <= 0) |
227 | if (avail <= 0) |
| 214 | break; |
228 | break; |
| 215 | |
229 | |
| 216 | ixsend &ix = ixface.back (); |
230 | ixsend &ix = ixface.back (); |
| 217 | |
231 | |
| 218 | if (facedata *d = face_data (ix.idx, faceset)) |
|
|
| 219 | { |
|
|
| 220 | if (fxix) |
|
|
| 221 | { |
|
|
| 222 | // estimate the packet header overhead "ix " + idx + (new)ofs |
232 | // estimate the packet header overhead "ix " + idx + (new)ofs |
| 223 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
233 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
| 224 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
234 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
| 225 | |
235 | |
| 226 | // only transfer something if the amount of data transferred |
236 | // only transfer something if the amount of data transferred |
| 227 | // has a healthy relation to the header overhead |
237 | // has a healthy relation to the header overhead |
| 228 | if (chunk < 64) |
238 | if (chunk < 64) |
| 229 | break; |
239 | break; |
| 230 | |
240 | |
| 231 | chunk = min (chunk, (int)ix.ofs); |
241 | chunk = min (chunk, (int)ix.ofs); |
| 232 | |
242 | |
| 233 | ix.ofs -= chunk; |
243 | ix.ofs -= chunk; |
| 234 | |
244 | |
| 235 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
245 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
| 236 | |
246 | |
| 237 | packet sl ("ix"); |
247 | packet sl ("ix"); |
| 238 | |
248 | |
| 239 | sl << ber32 (ix.idx) |
249 | sl << ber32 (ix.idx) |
| 240 | << ber32 (ix.ofs) |
250 | << ber32 (ix.ofs) |
| 241 | << data (d->data.data () + ix.ofs, chunk); |
251 | << data (ix.data + ix.ofs, chunk); |
| 242 | |
252 | |
| 243 | send_packet (sl); |
253 | send_packet (sl); |
| 244 | } |
|
|
| 245 | else |
|
|
| 246 | { |
|
|
| 247 | send_image (ix.idx); |
|
|
| 248 | ix.ofs = 0; |
|
|
| 249 | } |
|
|
| 250 | } |
|
|
| 251 | else |
|
|
| 252 | ix.ofs = 0; |
|
|
| 253 | |
254 | |
| 254 | if (!ix.ofs) |
255 | if (!ix.ofs) |
| 255 | { |
256 | { |
| 256 | ixface.pop_back (); |
257 | ix_pop (); |
| 257 | |
258 | |
| 258 | if (ixface.empty ()) |
259 | if (ixface.empty ()) |
| 259 | break; |
260 | break; |
| 260 | } |
261 | } |
| 261 | } |
262 | } |
| … | |
… | |
| 263 | |
264 | |
| 264 | rate_avail -= outputbuffer_len (); |
265 | rate_avail -= outputbuffer_len (); |
| 265 | } |
266 | } |
| 266 | |
267 | |
| 267 | void |
268 | void |
| 268 | client::flush_sockets (void) |
269 | client::flush_sockets () |
| 269 | { |
270 | { |
| 270 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
271 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
| 271 | (*i)->flush (); |
272 | (*i)->flush (); |
| 272 | } |
273 | } |
| 273 | |
274 | |
| 274 | void |
275 | void |
| 275 | client::clock (void) |
276 | client::clock () |
| 276 | { |
277 | { |
| 277 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
278 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
| 278 | (*i)->tick (); |
279 | (*i)->tick (); |
| 279 | |
280 | |
| 280 | // give them all the same chances |
281 | // give them all the same chances |
