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/cvs/deliantra/server/socket/lowlevel.C
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Comparing deliantra/server/socket/lowlevel.C (file contents):
Revision 1.50 by root, Thu Jul 12 19:36:58 2007 UTC vs.
Revision 1.58 by root, Sat Sep 8 06:57:08 2007 UTC

… …
31# include <sys/socket.h> 31# include <sys/socket.h>
32# include <netinet/in.h> 32# include <netinet/in.h>
33# include <netinet/tcp.h> 33# include <netinet/tcp.h>
34#endif 34#endif
35 35
36#define HAVE_SIOCOUTQ 1 //TODO configure.ac support
37#if HAVE_SIOCOUTQ
38# include <linux/sockios.h>
39#endif
40
41// disconnect a socket after this many seconds without an ack
42#define SOCKET_TIMEOUT 8.
43
44// force a packet when idle for more than this many seconds, 36// force a packet when idle for more than this many seconds,
45// forcing an ack regularly. 37// forcing an ack regularly.
46#define IDLE_PING 2. 38#define IDLE_PING 2.
47 39
48void 40void
49client::flush () 41client::flush ()
50{ 42{
51 if (destroyed ()) 43 if (destroyed ())
52 return; 44 return;
53
54# if HAVE_SIOCOUTQ
55 {
56 int value;
57
58 if (!ioctl (fd, SIOCOUTQ, &value))
59 outq = value;
60 }
61# endif
62
63#if HAVE_TCP_INFO
64 // check about once per second, spread evenly over all clients
65 // do this only when player is active
66 if (!((pticks + fd) & 7) && pl && pl->active)
67 {
68 // check time of last ack, and, if too old, kill connection
69 struct tcp_info tcpi;
70 socklen_t len = sizeof (tcpi);
71
72 if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi))
73 {
74 if (tcpi.tcpi_snd_mss)
75 mss = tcpi.tcpi_snd_mss;
76
77 rtt = tcpi.tcpi_rtt;
78 rttvar = tcpi.tcpi_rttvar;
79
80 if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000))
81 {
82 send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)");
83 write_outputbuffer ();
84
85 LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd,
86 (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked);
87 destroy ();
88 }
89 }
90 }
91#endif
92 45
93 /** 46 /**
94 * Writes data to socket. 47 * Writes data to socket.
95 * 48 *
96 * When the socket is clear to write, and we have backlogged data, this 49 * When the socket is clear to write, and we have backlogged data, this
… …
179 if (inbuf_len >= 2 + pkt_len) 132 if (inbuf_len >= 2 + pkt_len)
180 return 2 + pkt_len; 133 return 2 + pkt_len;
181 134
182 if (inbuf_len == sizeof (inbuf)) 135 if (inbuf_len == sizeof (inbuf))
183 { 136 {
184 send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); 137 send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED | NDI_REPLY);
185 destroy (); 138 destroy ();
186 return -1; 139 return -1;
187 } 140 }
188 } 141 }
189 142
… …
283 ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); 236 ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl);
284 else 237 else
285 ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); 238 ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this);
286 } 239 }
287 else 240 else
288 send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); 241 send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name);
289} 242}
290 243
291bool 244bool
292client::handle_packet () 245client::handle_packet ()
293{ 246{
… …
334 287
335 goto next_packet; 288 goto next_packet;
336 } 289 }
337 290
338 // If we get here, we didn't find a valid command. 291 // If we get here, we didn't find a valid command.
339 send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); 292 send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2);
340next_packet: 293next_packet:
341 skip_packet (pkt_len); 294 skip_packet (pkt_len);
342 295
343 // input buffer has space again 296 // input buffer has space again
344 socket_ev.poll (socket_ev.poll () | PE_R); 297 socket_ev.poll (socket_ev.poll () | PE_R);
… …
476client::send_packet (packet &sl) 429client::send_packet (packet &sl)
477{ 430{
478 if (destroyed ()) 431 if (destroyed ())
479 return; 432 return;
480 433
481 if (sl.length () >= MAXSOCKBUF) 434 if (sl.length () > MAXSOCKBUF)
482 { 435 {
483 LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); 436 LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());
484 /* Almost certainly we've overflowed a buffer, so quit now to make 437 /* Almost certainly we've overflowed a buffer, so quit now to make
485 * it easier to debug. 438 * it easier to debug.
486 */ 439 */
… …
534} 487}
535 488
536void 489void
537client::send_msg (int color, const char *type, const char *msg) 490client::send_msg (int color, const char *type, const char *msg)
538{ 491{
539 if (msg_is_special (msg)) 492 if (!msg || !type) // it can happen (for example, missing attack messages cause this)
493 {
494 LOG (logBacktrace | llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg);
495 return;
496 }
497
498 if (msg_is_special (msg) || (type [0] == 'c' && type [1] == '/'))
540 cfperl_send_msg (this, color, type, msg); 499 cfperl_send_msg (this, color, type, msg);
541 else if (can_msg) 500 else if (can_msg)
542 send_packet_printf ("msg %d %s %s", color, type, msg); 501 send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg);
543 else if (color < 0) 502 else if (color < 0)
544 return; // client cannot handle this 503 return; // client cannot handle this
545 else 504 else
546 send_packet_printf ("drawinfo %d %s", color, msg); 505 send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg);
547} 506}
548 507
549void 508void
550client::send_drawinfo (const char *msg, int flags) 509client::send_drawinfo (const char *msg, int flags)
551{ 510{

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