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 |
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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; |
… | |
… | |
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 |
50 | // check about once per second, spread evenly over all clients |
52 | if (!((pticks + fd) & 7)) |
51 | // do this only when player is active |
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52 | if (!((pticks + fd) & 7) && pl && pl->active) |
53 | { |
53 | { |
54 | // check time of last ack, and, if too old, kill connection |
54 | // check time of last ack, and, if too old, kill connection |
55 | struct tcp_info tcpi; |
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56 | socklen_t len = sizeof (tcpi); |
55 | socklen_t len = sizeof (tcpi); |
57 | |
56 | |
58 | 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)) |
59 | { |
58 | { |
60 | rtt = tcpi.tcpi_rtt; |
59 | if (tcpi.tcpi_snd_mss) |
61 | rttvar = tcpi.tcpi_rttvar; |
60 | mss = tcpi.tcpi_snd_mss; |
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61 | |
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62 | fprintf (stderr, "uack %d sst %d cwnd %d mss %d pmtu %d\n", |
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63 | tcpi.tcpi_unacked, tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu); |
62 | |
64 | |
63 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
65 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
64 | { |
66 | { |
65 | 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)"); |
66 | write_outputbuffer (); |
68 | write_outputbuffer (); |
… | |
… | |
81 | */ |
83 | */ |
82 | |
84 | |
83 | // write a nop to the socket at least every IDLE_NOP seconds. |
85 | // write a nop to the socket at least every IDLE_NOP seconds. |
84 | if (!outputbuffer.len) |
86 | if (!outputbuffer.len) |
85 | { |
87 | { |
86 | if (last_send + IDLE_PING <= NOW) |
88 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
87 | { |
89 | { |
88 | // this is a bit ugly, but map1/map1a seem to be the only |
90 | // this is a bit ugly, but map1/map1a seem to be the only |
89 | // nop'able commands and they are quite small. |
91 | // nop'able commands and they are quite small. |
90 | packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
92 | packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
91 | send_packet (sl); |
93 | send_packet (sl); |
… | |
… | |
507 | va_end (ap); |
509 | va_end (ap); |
508 | |
510 | |
509 | send_packet (sl); |
511 | send_packet (sl); |
510 | } |
512 | } |
511 | |
513 | |
512 | void |
514 | // returns true when the message needs special (read: perl) treatment |
513 | client::send_drawinfo (const char *msg, int flags) |
515 | static bool |
514 | { |
516 | msg_is_special (const char *msg) |
515 | send_packet_printf ("drawinfo %d %s", flags, msg); |
517 | { |
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518 | return msg [strcspn (msg, "<[&\n")]; |
516 | } |
519 | } |
517 | |
520 | |
518 | void |
521 | void |
519 | client::send_msg (int color, const char *type, const char *msg) |
522 | client::send_msg (int color, const char *type, const char *msg) |
520 | { |
523 | { |
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524 | if (msg_is_special (msg)) |
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525 | cfperl_send_msg (this, color, type, msg); |
521 | if (can_msg) |
526 | else if (can_msg) |
522 | send_packet_printf ("msg %d %s %s", color, type, msg); |
527 | send_packet_printf ("msg %d %s %s", color, type, msg); |
523 | else if (color < 0) |
528 | else if (color < 0) |
524 | return; // client cannot handle this |
529 | return; // client cannot handle this |
525 | else if (strchr (msg, '<') || strchr (msg, '&')) |
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526 | { |
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527 | //TODO: should escape/modify to old syntax |
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528 | send_packet_printf ("drawinfo %d %s", color, msg); |
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529 | } |
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530 | else |
530 | else |
531 | send_packet_printf ("drawinfo %d %s", color, msg); |
531 | send_packet_printf ("drawinfo %d %s", color, msg); |
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532 | } |
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533 | |
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534 | void |
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535 | client::send_drawinfo (const char *msg, int flags) |
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536 | { |
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537 | send_msg (flags, "log", msg); |
532 | } |
538 | } |
533 | |
539 | |
534 | /*********************************************************************** |
540 | /*********************************************************************** |
535 | * |
541 | * |
536 | * packet functions/utilities |
542 | * packet functions/utilities |