| 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; |
| … | |
… | |
| 51 | // check about once per second, spread evenly over all clients |
50 | // check about once per second, spread evenly over all clients |
| 52 | // do this only when player is active |
51 | // do this only when player is active |
| 53 | if (!((pticks + fd) & 7) && pl && pl->active) |
52 | if (!((pticks + fd) & 7) && pl && pl->active) |
| 54 | { |
53 | { |
| 55 | // check time of last ack, and, if too old, kill connection |
54 | // check time of last ack, and, if too old, kill connection |
| 56 | struct tcp_info tcpi; |
|
|
| 57 | socklen_t len = sizeof (tcpi); |
55 | socklen_t len = sizeof (tcpi); |
| 58 | |
56 | |
| 59 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
57 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
| 60 | { |
58 | { |
| 61 | if (tcpi.tcpi_snd_mss) |
59 | if (tcpi.tcpi_snd_mss) |
| 62 | mss = tcpi.tcpi_snd_mss; |
60 | mss = tcpi.tcpi_snd_mss; |
| 63 | |
61 | |
| 64 | rtt = tcpi.tcpi_rtt; |
62 | //fprintf (stderr, "uack %d sst %d cwnd %d mss %d pmtu %d\n", |
| 65 | rttvar = tcpi.tcpi_rttvar; |
63 | // tcpi.tcpi_unacked, tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu); |
| 66 | |
64 | |
| 67 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
65 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
| 68 | { |
66 | { |
| 69 | send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
67 | send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
| 70 | write_outputbuffer (); |
68 | write_outputbuffer (); |
