| 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 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 |
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| 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 |
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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 | /** |
| … | |
… | |
| 49 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
48 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
| 50 | |
49 | |
| 51 | #define MAX_QUEUE_DEPTH 50 |
50 | #define MAX_QUEUE_DEPTH 50 |
| 52 | #define MAX_QUEUE_BACKLOG 3. |
51 | #define MAX_QUEUE_BACKLOG 3. |
| 53 | |
52 | |
| 54 | // disconnect a socket after this many seconds without an ack |
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| 55 | #define SOCKET_TIMEOUT 16. |
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| 56 | |
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| 57 | void |
53 | void |
| 58 | client::reset_state () |
54 | client::reset_state () |
| 59 | { |
55 | { |
| 60 | if (!pl) |
56 | if (!pl) |
| 61 | return; |
57 | return; |
| … | |
… | |
| 95 | { |
91 | { |
| 96 | command &cmd = cmd_queue.front (); |
92 | command &cmd = cmd_queue.front (); |
| 97 | |
93 | |
| 98 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
94 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
| 99 | { |
95 | { |
| 100 | reset_state (); |
96 | reset_state (); // the command might actually reset some movement state etc. |
| 101 | send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
97 | |
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98 | if (pl) |
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99 | pl->failmsg ( |
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100 | "Cannot keep up with your commands, ignoring them! " |
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101 | "H<Your character cannot keep up with the instructions you give G<him|her>. " |
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102 | "Try issuing commands slower, or, if G<he|she> is incapacitated (paralyzed and so on), " |
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103 | "wait till your character can act again.\n\nIf G<he|she> is permanently stuck, then " |
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104 | "try the B<suicide> command (or use B<chat> to ask somebody to B<invite> you out).>" |
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105 | ); |
| 102 | } |
106 | } |
| 103 | else |
107 | else |
| 104 | execute (cmd.handler, cmd.data, cmd.datalen); |
108 | execute (cmd.handler, cmd.data, cmd.datalen); |
| 105 | |
109 | |
| 106 | sfree<char> (cmd.data, cmd.datalen + 1); |
110 | sfree<char> (cmd.data, cmd.datalen + 1); |
| … | |
… | |
| 114 | void |
118 | void |
| 115 | client::tick () |
119 | client::tick () |
| 116 | { |
120 | { |
| 117 | if (!pl || destroyed ()) |
121 | if (!pl || destroyed ()) |
| 118 | return; |
122 | return; |
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123 | |
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124 | pl->dirty = true; |
| 119 | |
125 | |
| 120 | /* Update the players stats once per tick. More efficient than |
126 | /* Update the players stats once per tick. More efficient than |
| 121 | * sending them whenever they change, and probably just as useful |
127 | * sending them whenever they change, and probably just as useful |
| 122 | */ |
128 | */ |
| 123 | esrv_update_stats (pl); |
129 | esrv_update_stats (pl); |
| 124 | |
130 | |
| 125 | if (last_weight != -1 && last_weight != WEIGHT (pl->ob)) |
131 | sint32 weight = pl->ob->client_weight (); |
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132 | |
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133 | if (last_weight != weight) |
| 126 | { |
134 | { |
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135 | pl->ob->update_stats (); |
| 127 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
136 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
| 128 | if (last_weight != WEIGHT (pl->ob)) |
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| 129 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
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| 130 | (unsigned long) last_weight, WEIGHT (pl->ob)); |
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| 131 | } |
137 | } |
| 132 | |
138 | |
| 133 | draw_client_map (pl); |
139 | draw_client_map (pl); |
| 134 | |
140 | |
| 135 | if (update_look) |
141 | if (update_look) |
| … | |
… | |
| 156 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
162 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
| 157 | |
163 | |
| 158 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
164 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
| 159 | #endif |
165 | #endif |
| 160 | |
166 | |
| 161 | // fast-time-out a player by checking for missign acks |
167 | // fast-time-out a player by checking for missing acks |
| 162 | // do this only when player is active |
168 | // do this only when player is active |
| 163 | if (pl && pl->active |
169 | if (pl && pl->active |
| 164 | && tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
170 | && tcpi.tcpi_last_ack_recv > int (socket_timeout * 1000)) |
| 165 | { |
171 | { |
| 166 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
172 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
| 167 | write_outputbuffer (); |
173 | write_outputbuffer (); |
| 168 | |
174 | |
| 169 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
175 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
| … | |
… | |
| 180 | #if HAVE_TCP_INFO |
186 | #if HAVE_TCP_INFO |
| 181 | // further restrict the available bandwidth by the excess bandwidth available |
187 | // further restrict the available bandwidth by the excess bandwidth available |
| 182 | max_send = min (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
188 | max_send = min (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
| 183 | #endif |
189 | #endif |
| 184 | |
190 | |
| 185 | // if we can split images, round to next-lowest mss |
191 | // round to next-lowest mss |
| 186 | if (fxix) max_send -= max_send % mss; |
192 | max_send -= max_send % mss; |
| 187 | |
193 | |
| 188 | if (ixface.empty ()) |
194 | if (ixface.empty ()) |
| 189 | { |
195 | { |
| 190 | // regularly send a new face when queue is empty |
196 | // regularly send a new face when queue is empty |
| 191 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
197 | if (bg_scrub && !--bg_scrub) |
| 192 | while (scrub_idx < faces.size () - 1) |
198 | while (scrub_idx < faces.size () - 1) |
| 193 | { |
199 | { |
| 194 | ++scrub_idx; |
200 | ++scrub_idx; |
| 195 | |
201 | |
| 196 | if (!faces_sent [scrub_idx]) |
202 | if (!faces_sent [scrub_idx]) |
| … | |
… | |
| 218 | |
224 | |
| 219 | ixsend &ix = ixface.back (); |
225 | ixsend &ix = ixface.back (); |
| 220 | |
226 | |
| 221 | if (facedata *d = face_data (ix.idx, faceset)) |
227 | if (facedata *d = face_data (ix.idx, faceset)) |
| 222 | { |
228 | { |
| 223 | if (fxix) |
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| 224 | { |
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| 225 | // estimate the packet header overhead "ix " + idx + (new)ofs |
229 | // estimate the packet header overhead "ix " + idx + (new)ofs |
| 226 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
230 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
| 227 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
231 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
| 228 | |
232 | |
| 229 | // only transfer something if the amount of data transferred |
233 | // only transfer something if the amount of data transferred |
| 230 | // has a healthy relation to the header overhead |
234 | // has a healthy relation to the header overhead |
| 231 | if (chunk < 64) |
235 | if (chunk < 64) |
| 232 | break; |
236 | break; |
| 233 | |
237 | |
| 234 | chunk = min (chunk, (int)ix.ofs); |
238 | chunk = min (chunk, (int)ix.ofs); |
| 235 | |
239 | |
| 236 | ix.ofs -= chunk; |
240 | ix.ofs -= chunk; |
| 237 | |
241 | |
| 238 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
242 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
| 239 | |
243 | |
| 240 | packet sl ("ix"); |
244 | packet sl ("ix"); |
| 241 | |
245 | |
| 242 | sl << ber32 (ix.idx) |
246 | sl << ber32 (ix.idx) |
| 243 | << ber32 (ix.ofs) |
247 | << ber32 (ix.ofs) |
| 244 | << data (d->data.data () + ix.ofs, chunk); |
248 | << data (d->data.data () + ix.ofs, chunk); |
| 245 | |
249 | |
| 246 | send_packet (sl); |
250 | send_packet (sl); |
| 247 | } |
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| 248 | else |
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| 249 | { |
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| 250 | send_image (ix.idx); |
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| 251 | ix.ofs = 0; |
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| 252 | } |
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| 253 | } |
251 | } |
| 254 | else |
252 | else |
| 255 | ix.ofs = 0; |
253 | ix.ofs = 0; |
| 256 | |
254 | |
| 257 | if (!ix.ofs) |
255 | if (!ix.ofs) |
