1 | /* |
1 | /* |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 | * Copyright (©) 1992,2007 Frank Tore Johansen |
5 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | * |
6 | * |
7 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
7 | * Crossfire TRT is free software: you can redistribute it and/or modify |
8 | * under the terms of the GNU General Public License as published by the Free |
8 | * it under the terms of the GNU General Public License as published by |
9 | * Software Foundation; either version 2 of the License, or (at your option) |
9 | * the Free Software Foundation, either version 3 of the License, or |
10 | * any later version. |
10 | * (at your option) any later version. |
11 | * |
11 | * |
12 | * This program is distributed in the hope that it will be useful, but |
12 | * This program is distributed in the hope that it will be useful, |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * for more details. |
15 | * GNU General Public License for more details. |
16 | * |
16 | * |
17 | * You should have received a copy of the GNU General Public License along |
17 | * You should have received a copy of the GNU General Public License |
18 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
|
20 | * |
19 | * |
21 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
20 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
22 | */ |
21 | */ |
23 | |
22 | |
24 | using namespace std; |
23 | using namespace std; |
… | |
… | |
46 | { |
45 | { |
47 | if (destroyed ()) |
46 | if (destroyed ()) |
48 | return; |
47 | return; |
49 | |
48 | |
50 | #if HAVE_TCP_INFO |
49 | #if HAVE_TCP_INFO |
51 | // check about once per second, spread evenly over all clients |
|
|
52 | // do this only when player is active |
|
|
53 | if (!((pticks + fd) & 7) && pl && pl->active) |
|
|
54 | { |
|
|
55 | // check time of last ack, and, if too old, kill connection |
50 | // check time of last ack, and, if too old, kill connection |
56 | struct tcp_info tcpi; |
|
|
57 | socklen_t len = sizeof (tcpi); |
51 | socklen_t len = sizeof (tcpi); |
58 | |
52 | |
59 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
53 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
60 | { |
54 | { |
61 | if (tcpi.tcpi_snd_mss) |
55 | if (tcpi.tcpi_snd_mss) |
62 | mss = tcpi.tcpi_snd_mss; |
56 | mss = tcpi.tcpi_snd_mss; |
63 | |
57 | |
64 | rtt = tcpi.tcpi_rtt; |
58 | #if 0 |
65 | rttvar = tcpi.tcpi_rttvar; |
59 | fprintf (stderr, "uack %d ack %d lost %d ret %d fack %d sst %d cwnd %d mss %d pmtu %d advmss %d EXC %d\n", |
|
|
60 | tcpi.tcpi_unacked, |
|
|
61 | tcpi.tcpi_sacked, |
|
|
62 | tcpi.tcpi_lost, |
|
|
63 | tcpi.tcpi_retrans, |
|
|
64 | tcpi.tcpi_fackets, |
|
|
65 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
|
|
66 | |
|
|
67 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
|
|
68 | #endif |
66 | |
69 | |
|
|
70 | // do this only when player is active |
|
|
71 | if (pl && pl->active |
67 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
72 | && tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
68 | { |
73 | { |
69 | send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
74 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
70 | write_outputbuffer (); |
75 | write_outputbuffer (); |
71 | |
76 | |
72 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
77 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
73 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
78 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
74 | destroy (); |
79 | destroy (); |
75 | } |
|
|
76 | } |
80 | } |
77 | } |
81 | } |
78 | #endif |
82 | #endif |
79 | |
83 | |
80 | /** |
84 | /** |
… | |
… | |
166 | if (inbuf_len >= 2 + pkt_len) |
170 | if (inbuf_len >= 2 + pkt_len) |
167 | return 2 + pkt_len; |
171 | return 2 + pkt_len; |
168 | |
172 | |
169 | if (inbuf_len == sizeof (inbuf)) |
173 | if (inbuf_len == sizeof (inbuf)) |
170 | { |
174 | { |
171 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
175 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED | NDI_REPLY); |
172 | destroy (); |
176 | destroy (); |
173 | return -1; |
177 | return -1; |
174 | } |
178 | } |
175 | } |
179 | } |
176 | |
180 | |
… | |
… | |
270 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
274 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
271 | else |
275 | else |
272 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
276 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
273 | } |
277 | } |
274 | else |
278 | else |
275 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
279 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name); |
276 | } |
280 | } |
277 | |
281 | |
278 | bool |
282 | bool |
279 | client::handle_packet () |
283 | client::handle_packet () |
280 | { |
284 | { |
… | |
… | |
321 | |
325 | |
322 | goto next_packet; |
326 | goto next_packet; |
323 | } |
327 | } |
324 | |
328 | |
325 | // If we get here, we didn't find a valid command. |
329 | // If we get here, we didn't find a valid command. |
326 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); |
330 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2); |
327 | next_packet: |
331 | next_packet: |
328 | skip_packet (pkt_len); |
332 | skip_packet (pkt_len); |
329 | |
333 | |
330 | // input buffer has space again |
334 | // input buffer has space again |
331 | socket_ev.poll (socket_ev.poll () | PE_R); |
335 | socket_ev.poll (socket_ev.poll () | PE_R); |
… | |
… | |
524 | client::send_msg (int color, const char *type, const char *msg) |
528 | client::send_msg (int color, const char *type, const char *msg) |
525 | { |
529 | { |
526 | if (msg_is_special (msg)) |
530 | if (msg_is_special (msg)) |
527 | cfperl_send_msg (this, color, type, msg); |
531 | cfperl_send_msg (this, color, type, msg); |
528 | else if (can_msg) |
532 | else if (can_msg) |
529 | send_packet_printf ("msg %d %s %s", color, type, msg); |
533 | send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg); |
530 | else if (color < 0) |
534 | else if (color < 0) |
531 | return; // client cannot handle this |
535 | return; // client cannot handle this |
532 | else |
536 | else |
533 | send_packet_printf ("drawinfo %d %s", color, msg); |
537 | send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg); |
534 | } |
538 | } |
535 | |
539 | |
536 | void |
540 | void |
537 | client::send_drawinfo (const char *msg, int flags) |
541 | client::send_drawinfo (const char *msg, int flags) |
538 | { |
542 | { |