| 1 | /* |
1 | /* |
| 2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 3 | * |
3 | * |
| 4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
| 6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
| 7 | * |
7 | * |
| 8 | * Crossfire TRT is free software: you can redistribute it and/or modify |
8 | * Deliantra 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 3 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, |
| … | |
… | |
| 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, see <http://www.gnu.org/licenses/>. |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | * |
20 | * |
| 21 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
21 | * The authors can be reached via e-mail to <support@deliantra.net> |
| 22 | */ |
22 | */ |
| 23 | |
23 | |
| 24 | /** |
24 | /** |
| 25 | * \file |
25 | * \file |
| 26 | * Main client/server loops. |
26 | * Main client/server loops. |
| … | |
… | |
| 49 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
49 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
| 50 | |
50 | |
| 51 | #define MAX_QUEUE_DEPTH 50 |
51 | #define MAX_QUEUE_DEPTH 50 |
| 52 | #define MAX_QUEUE_BACKLOG 3. |
52 | #define MAX_QUEUE_BACKLOG 3. |
| 53 | |
53 | |
| 54 | // disconnect a socket after this many seconds without an ack |
|
|
| 55 | #define SOCKET_TIMEOUT 8. |
|
|
| 56 | |
|
|
| 57 | void |
54 | void |
| 58 | client::reset_state () |
55 | client::reset_state () |
| 59 | { |
56 | { |
| 60 | if (!pl) |
57 | if (!pl) |
| 61 | return; |
58 | return; |
| … | |
… | |
| 75 | reset_state (); |
72 | reset_state (); |
| 76 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
73 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
| 77 | } |
74 | } |
| 78 | else |
75 | else |
| 79 | { |
76 | { |
| 80 | cmd_queue.push_back (command ()); |
77 | cmd_queue.resize (cmd_queue.size () + 1); |
| 81 | command &cmd = cmd_queue.back (); |
78 | command &cmd = cmd_queue.back (); |
| 82 | cmd.stamp = stamp; |
79 | cmd.stamp = stamp; |
| 83 | cmd.handler = handler; |
80 | cmd.handler = handler; |
| 84 | cmd.data = salloc<char> (datalen + 1, data); |
81 | cmd.data = salloc<char> (datalen + 1, data); |
| 85 | cmd.datalen = datalen; |
82 | cmd.datalen = datalen; |
| … | |
… | |
| 95 | { |
92 | { |
| 96 | command &cmd = cmd_queue.front (); |
93 | command &cmd = cmd_queue.front (); |
| 97 | |
94 | |
| 98 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
95 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
| 99 | { |
96 | { |
| 100 | reset_state (); |
97 | reset_state (); // the command might actually reset some movement state etc. |
| 101 | send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
98 | |
|
|
99 | if (pl) |
|
|
100 | pl->failmsg ( |
|
|
101 | "Cannot keep up with your commands, ignoring them! " |
|
|
102 | "H<Your character cannot keep up with the instructions you give G<him|her>. " |
|
|
103 | "Try issuing commands slower, or, if G<he|she> is incapacitated (paralyzed and so on), " |
|
|
104 | "wait till your character can act again.\n\nIf G<he|she> is permanently stuck, then " |
|
|
105 | "try the B<suicide> command (or use B<chat> to ask somebody to B<invite> you out).>" |
|
|
106 | ); |
| 102 | } |
107 | } |
| 103 | else |
108 | else |
| 104 | execute (cmd.handler, cmd.data, cmd.datalen); |
109 | execute (cmd.handler, cmd.data, cmd.datalen); |
| 105 | |
110 | |
|
|
111 | sfree<char> (cmd.data, cmd.datalen + 1); |
| 106 | cmd_queue.pop_front (); |
112 | cmd_queue.pop_front (); |
| 107 | return true; |
113 | return true; |
| 108 | } |
114 | } |
| 109 | else |
115 | else |
| 110 | return false; |
116 | return false; |
| … | |
… | |
| 113 | void |
119 | void |
| 114 | client::tick () |
120 | client::tick () |
| 115 | { |
121 | { |
| 116 | if (!pl || destroyed ()) |
122 | if (!pl || destroyed ()) |
| 117 | return; |
123 | return; |
|
|
124 | |
|
|
125 | pl->dirty = true; |
| 118 | |
126 | |
| 119 | /* Update the players stats once per tick. More efficient than |
127 | /* Update the players stats once per tick. More efficient than |
| 120 | * sending them whenever they change, and probably just as useful |
128 | * sending them whenever they change, and probably just as useful |
| 121 | */ |
129 | */ |
| 122 | esrv_update_stats (pl); |
130 | esrv_update_stats (pl); |
| 123 | |
131 | |
| 124 | if (last_weight != -1 && last_weight != WEIGHT (pl->ob)) |
132 | sint32 weight = pl->ob->client_weight (); |
|
|
133 | |
|
|
134 | if (last_weight != weight) |
| 125 | { |
135 | { |
|
|
136 | pl->ob->update_stats (); |
| 126 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
137 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
| 127 | if (last_weight != WEIGHT (pl->ob)) |
|
|
| 128 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
|
|
| 129 | (unsigned long) last_weight, WEIGHT (pl->ob)); |
|
|
| 130 | } |
138 | } |
| 131 | |
139 | |
| 132 | draw_client_map (pl); |
140 | draw_client_map (pl); |
| 133 | |
141 | |
| 134 | if (update_look) |
142 | if (update_look) |
| 135 | esrv_draw_look (pl); |
143 | esrv_draw_look (pl); |
|
|
144 | |
|
|
145 | mapinfo_queue_run (); |
| 136 | |
146 | |
| 137 | #if HAVE_TCP_INFO |
147 | #if HAVE_TCP_INFO |
| 138 | // check time of last ack, and, if too old, kill connection |
148 | // check time of last ack, and, if too old, kill connection |
| 139 | socklen_t len = sizeof (tcpi); |
149 | socklen_t len = sizeof (tcpi); |
| 140 | |
150 | |
| … | |
… | |
| 153 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
163 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
| 154 | |
164 | |
| 155 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
165 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
| 156 | #endif |
166 | #endif |
| 157 | |
167 | |
|
|
168 | // fast-time-out a player by checking for missing acks |
| 158 | // do this only when player is active |
169 | // do this only when player is active |
| 159 | if (pl && pl->active |
170 | if (pl && pl->active |
| 160 | && tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
171 | && tcpi.tcpi_last_ack_recv > int (socket_timeout * 1000)) |
| 161 | { |
172 | { |
| 162 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
173 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
| 163 | write_outputbuffer (); |
174 | write_outputbuffer (); |
| 164 | |
175 | |
| 165 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
176 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
| … | |
… | |
| 176 | #if HAVE_TCP_INFO |
187 | #if HAVE_TCP_INFO |
| 177 | // further restrict the available bandwidth by the excess bandwidth available |
188 | // further restrict the available bandwidth by the excess bandwidth available |
| 178 | max_send = min (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
189 | max_send = min (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
| 179 | #endif |
190 | #endif |
| 180 | |
191 | |
| 181 | // if we can split images, round to next-lowest mss |
192 | // round to next-lowest mss |
| 182 | if (fxix) max_send -= max_send % mss; |
193 | max_send -= max_send % mss; |
| 183 | |
194 | |
| 184 | if (ixface.empty ()) |
195 | if (ixface.empty ()) |
| 185 | { |
196 | { |
| 186 | // regularly send a new face when queue is empty |
197 | // regularly send a new face when queue is empty |
| 187 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
198 | if (bg_scrub && !--bg_scrub) |
| 188 | while (scrub_idx < faces.size () - 1) |
199 | while (scrub_idx < faces.size () - 1) |
| 189 | { |
200 | { |
| 190 | ++scrub_idx; |
201 | ++scrub_idx; |
| 191 | |
202 | |
| 192 | if (!faces_sent [scrub_idx]) |
203 | if (!faces_sent [scrub_idx]) |
| … | |
… | |
| 214 | |
225 | |
| 215 | ixsend &ix = ixface.back (); |
226 | ixsend &ix = ixface.back (); |
| 216 | |
227 | |
| 217 | if (facedata *d = face_data (ix.idx, faceset)) |
228 | if (facedata *d = face_data (ix.idx, faceset)) |
| 218 | { |
229 | { |
| 219 | if (fxix) |
|
|
| 220 | { |
|
|
| 221 | // estimate the packet header overhead "ix " + idx + (new)ofs |
230 | // estimate the packet header overhead "ix " + idx + (new)ofs |
| 222 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
231 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
| 223 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
232 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
| 224 | |
233 | |
| 225 | // only transfer something if the amount of data transferred |
234 | // only transfer something if the amount of data transferred |
| 226 | // has a healthy relation to the header overhead |
235 | // has a healthy relation to the header overhead |
| 227 | if (chunk < 64) |
236 | if (chunk < 64) |
| 228 | break; |
237 | break; |
| 229 | |
238 | |
| 230 | chunk = min (chunk, (int)ix.ofs); |
239 | chunk = min (chunk, (int)ix.ofs); |
| 231 | |
240 | |
| 232 | ix.ofs -= chunk; |
241 | ix.ofs -= chunk; |
| 233 | |
242 | |
| 234 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
243 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
| 235 | |
244 | |
| 236 | packet sl ("ix"); |
245 | packet sl ("ix"); |
| 237 | |
246 | |
| 238 | sl << ber32 (ix.idx) |
247 | sl << ber32 (ix.idx) |
| 239 | << ber32 (ix.ofs) |
248 | << ber32 (ix.ofs) |
| 240 | << data (d->data.data () + ix.ofs, chunk); |
249 | << data (d->data.data () + ix.ofs, chunk); |
| 241 | |
250 | |
| 242 | send_packet (sl); |
251 | send_packet (sl); |
| 243 | } |
|
|
| 244 | else |
|
|
| 245 | { |
|
|
| 246 | send_image (ix.idx); |
|
|
| 247 | ix.ofs = 0; |
|
|
| 248 | } |
|
|
| 249 | } |
252 | } |
| 250 | else |
253 | else |
| 251 | ix.ofs = 0; |
254 | ix.ofs = 0; |
| 252 | |
255 | |
| 253 | if (!ix.ofs) |
256 | if (!ix.ofs) |
