--- deliantra/server/socket/lowlevel.C 2007/05/28 21:22:26 1.42
+++ deliantra/server/socket/lowlevel.C 2008/12/27 01:25:00 1.68
@@ -1,36 +1,23 @@
/*
- * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
+ * This file is part of Deliantra, the Roguelike Realtime MMORPG.
*
- * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
+ * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
* Copyright (©) 1992,2007 Frank Tore Johansen
*
- * Crossfire TRT is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
+ * Deliantra is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License along
- * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
- * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
*
- * The authors can be reached via e-mail to
- */
-
-/**
- * \file
- * Low-level socket-related functions.
- *
- * \date 2003-12-02
- *
- * Contains some base functions that both the client and server
- * can use. As such, depending what we are being compiled for will
- * determine what we can include. the client is designed have
- * CFCLIENT defined as part of its compile flags.
+ * The authors can be reached via e-mail to
*/
using namespace std;
@@ -39,17 +26,16 @@
#include
#include
-#ifdef __linux__
+#if HAVE_TCP_INFO
# include
# include
# include
# include
#endif
-// use a really low timeout, as it doesn't cost any bandwidth, and you can
-// easily die in 20 seconds...
-#define SOCKET_TIMEOUT1 10 * 1000
-#define SOCKET_TIMEOUT2 20 * 1000
+// force a packet when idle for more than this many seconds,
+// forcing an ack regularly.
+#define IDLE_PING 2.
void
client::flush ()
@@ -57,28 +43,6 @@
if (destroyed ())
return;
-#ifdef __linux__
- // check time of last ack, and, if too old, kill connection
- struct tcp_info tcpi;
- socklen_t len = sizeof (tcpi);
-
- if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi))
- {
- unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent;
-
- rtt = tcpi.tcpi_rtt;
- rttvar = tcpi.tcpi_rttvar;
-
- if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 < diff && diff < 0x80000000UL // ack delayed for 20s
- && SOCKET_TIMEOUT2 < tcpi.tcpi_last_data_sent) // no data sent for 10s
- {
- LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd,
- (unsigned) tcpi.tcpi_last_ack_recv, (unsigned) tcpi.tcpi_last_data_sent, (unsigned) tcpi.tcpi_unacked);
- destroy ();
- }
- }
-#endif
-
/**
* Writes data to socket.
*
@@ -86,9 +50,24 @@
* is called to write it out.
*/
- if (!outputbuffer.len || socket_ev.poll () & PE_W)
+ // write a nop to the socket at least every IDLE_NOP seconds.
+ if (!outputbuffer.len)
+ {
+ if (last_send + IDLE_PING <= NOW && pl && pl->active)
+ {
+ // this is a bit ugly, but map1/map1a seem to be the only
+ // nop'able commands and they are quite small.
+ packet sl (mapmode == Map1Cmd ? "map1" : "map1a");
+ send_packet (sl);
+ }
+ else
+ return;
+ }
+
+ if (socket_ev.poll () & EV_WRITE)
return;
+ last_send = NOW;
write_outputbuffer ();
}
@@ -108,10 +87,6 @@
outputbuffer.start = 0;
outputbuffer.len -= res;
-#ifdef CS_LOGSTATS
- cst_tot.obytes += res;
- cst_lst.obytes += res;
-#endif
}
else if (res == 0)
{
@@ -126,7 +101,7 @@
else if (errno == EAGAIN)
{
// delay till ready
- socket_ev.poll (socket_ev.poll () | PE_W);
+ socket_ev.poll (socket_ev.poll () | EV_WRITE);
socket_ev.start ();
return;
}
@@ -138,7 +113,7 @@
}
}
- socket_ev.poll (socket_ev.poll () & ~PE_W);
+ socket_ev.poll (socket_ev.poll () & ~EV_WRITE);
}
/******************************************************************************
@@ -159,7 +134,7 @@
if (inbuf_len == sizeof (inbuf))
{
- send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED);
+ send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED | NDI_REPLY);
destroy ();
return -1;
}
@@ -207,13 +182,10 @@
{"addme", SC(AddMeCmd) 0 },
{"askface", SC(AskFaceCmd) 0 },
{"requestinfo", SC(RequestInfo) 0 },
- {"setfacemode", SC(SetFaceMode) 0 },
{"setsound", SC(SetSound) 0 },
{"setup", SC(SetUp) 0 },
{"version", SC(VersionCmd) 0 },
- {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */
{"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */
- {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */
};
bool
@@ -243,10 +215,11 @@
len -= 6;
}
- if (len > 4 && !strncmp (data, "say " , 4))
- return true;
- if (len > 5 && !strncmp (data, "chat ", 5))
- return true;
+ if (len > 4 && data [3] == ' ' && !strncmp (data, "say " , 4)) return true;
+ if (len > 5 && data [4] == ' ' && !strncmp (data, "chat " , 5)) return true;
+ if (len > 6 && data [5] == ' ' && !strncmp (data, "shout ", 6)) return true;
+
+ if (len == 7 && !strcmp (data, "suicide")) return true;
return false;
}
@@ -263,7 +236,7 @@
((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this);
}
else
- send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name);
+ send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name);
}
bool
@@ -314,19 +287,19 @@
}
// If we get here, we didn't find a valid command.
- send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2);
+ send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2);
next_packet:
skip_packet (pkt_len);
// input buffer has space again
- socket_ev.poll (socket_ev.poll () | PE_R);
+ socket_ev.poll (socket_ev.poll () | EV_READ);
return true;
}
// callback called when socket is either readable or writable
void
-client::socket_cb (iow &w, int got)
+client::socket_cb (iow &w, int revents)
{
//TODO remove when we have better socket cleanup logic
if (destroyed ())
@@ -335,15 +308,15 @@
return;
}
- if (got & PE_W)
+ if (revents & EV_WRITE)
{
write_outputbuffer ();
if (!outputbuffer.len)
- socket_ev.poll (socket_ev.poll () & ~PE_W);
+ socket_ev.poll (socket_ev.poll () & ~EV_WRITE);
}
- if (got & PE_R)
+ if (revents & EV_READ)
{
//TODO: rate-limit tcp connection in better ways, important
@@ -352,7 +325,7 @@
if (!amount)
{
// input buffer full
- socket_ev.poll (socket_ev.poll () & ~PE_R);
+ socket_ev.poll (socket_ev.poll () & ~EV_READ);
return;
}
@@ -378,24 +351,17 @@
{
inbuf_len += amount;
- cst_tot.ibytes += amount;
- cst_lst.ibytes += amount;
+ if (handle_packet ())
+ {
+ while (handle_packet ())
+ ;
- cmd_ev.start ();
+ flush ();
+ }
}
}
}
-// called whenever we have additional commands to process
-void
-client::cmd_cb (iw &w)
-{
- if (handle_packet ())
- w.start ();
- else
- flush ();
-}
-
/*******************************************************************************
*
* Start of write related routines.
@@ -459,7 +425,7 @@
if (destroyed ())
return;
- if (sl.length () >= MAXSOCKBUF)
+ if (sl.length () > MAXSOCKBUF)
{
LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());
/* Almost certainly we've overflowed a buffer, so quit now to make
@@ -508,25 +474,32 @@
}
void
-client::send_drawinfo (const char *msg, int flags)
-{
- send_packet_printf ("drawinfo %d %s", flags, msg);
-}
-
-void
client::send_msg (int color, const char *type, const char *msg)
{
- if (can_msg)
- send_packet_printf ("msg %d %s %s", color, type, msg);
- else if (color < 0)
- return; // client cannot handle this
- else if (strchr (msg, '<') || strchr (msg, '&'))
+ if (!msg || !type) // it can happen (for example, missing attack messages cause this)
{
- //TODO: should escape/modify to old syntax
- send_packet_printf ("drawinfo %d %s", color, msg);
+ LOG (logBacktrace | llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg);
+ return;
}
+
+ int len = strlen (msg);
+
+ if (!(color & NDI_VERBATIM)
+ && (msg_is_special (msg)
+ || (type [0] == 'c' && type [1] == '/') || len > (MAXSOCKBUF - 128)))
+ cfperl_send_msg (this, color, type, msg);
+ else if (can_msg)
+ send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg);
+ else if (color < 0)
+ return; // client cannot handle this
else
- send_packet_printf ("drawinfo %d %s", color, msg);
+ send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg);
+}
+
+void
+client::send_drawinfo (const char *msg, int flags)
+{
+ send_msg (flags, "log", msg);
}
/***********************************************************************
@@ -608,38 +581,3 @@
cur += len;
}
-/******************************************************************************
- *
- * statistics logging functions.
- *
- ******************************************************************************/
-
-#ifdef CS_LOGSTATS
-
-/* cst_tot is for the life of the server, cst_last is for the last series of
- * stats
- */
-CS_Stats cst_tot, cst_lst;
-
-/**
- * Writes out the gathered stats. We clear cst_lst.
- */
-void
-write_cs_stats (void)
-{
- time_t now = time (NULL);
-
- /* If no connections recently, don't both to log anything */
- if (cst_lst.ibytes == 0 && cst_lst.obytes == 0)
- return;
-
- /* CSSTAT is put in so scripts can easily find the line */
- LOG (llevInfo, "CSSTAT: %.16s tot %d %d %d %d inc %d %d %d %d\n",
- ctime (&now), cst_tot.ibytes, cst_tot.obytes, cst_tot.max_conn,
- now - cst_tot.time_start, cst_lst.ibytes, cst_lst.obytes, cst_lst.max_conn, now - cst_lst.time_start);
- cst_lst.ibytes = 0;
- cst_lst.obytes = 0;
- cst_lst.time_start = now;
-}
-#endif
-