version 1.19, 2001/11/27 19:32:46
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version 1.22, 2001/11/29 18:57:46
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# provides persistent TCP connections to the other servers in the network |
# provides persistent TCP connections to the other servers in the network |
# through multiplexed domain sockets |
# through multiplexed domain sockets |
# |
# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
# PID in subdir logs/lonc.pid |
# PID in subdir logs/lonc.pid |
# kill kills |
# kill kills |
# HUP restarts |
# HUP restarts |
Line 16
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Line 40
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# 12/05 Scott Harrison |
# 12/05 Scott Harrison |
# 12/05 Gerd Kortemeyer |
# 12/05 Gerd Kortemeyer |
# 01/10/01 Scott Harrison |
# 01/10/01 Scott Harrison |
# 03/14/01,03/15,06/12,11/26,11/27 Gerd Kortemeyer |
# 03/14/01,03/15,06/12,11/26,11/27,11/28 Gerd Kortemeyer |
# |
# |
# based on nonforker from Perl Cookbook |
# based on nonforker from Perl Cookbook |
# - server who multiplexes without forking |
# - server who multiplexes without forking |
Line 182 sub subreply {
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Line 206 sub subreply {
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Type => SOCK_STREAM, |
Type => SOCK_STREAM, |
Timeout => 10) |
Timeout => 10) |
or return "con_lost"; |
or return "con_lost"; |
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$SIG{ALRM}=sub { die "timeout" }; |
$SIG{ALRM}=sub { die "timeout" }; |
$SIG{__DIE__}='DEFAULT'; |
$SIG{__DIE__}='DEFAULT'; |
eval { |
eval { |
alarm(10); |
alarm(10); |
print $sclient "$cmd\n"; |
print $sclient "$cmd\n"; |
my $answer=<$sclient>; |
$answer=<$sclient>; |
chomp($answer); |
chomp($answer); |
alarm(0); |
alarm(0); |
}; |
}; |
Line 352 unless (
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Line 378 unless (
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sleep($st); |
sleep($st); |
exit; |
exit; |
}; |
}; |
# --------------------------------------- Send a ping to make other end do USR1 |
# ----------------------------------------------------------------- Init dialog |
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&status("Init dialogue: $conserver"); |
&status("Init dialogue: $conserver"); |
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$SIG{ALRM}=sub { die "timeout" }; |
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$SIG{__DIE__}='DEFAULT'; |
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eval { |
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alarm(60); |
print $remotesock "init\n"; |
print $remotesock "init\n"; |
$answer=<$remotesock>; |
$answer=<$remotesock>; |
print $remotesock "$answer"; |
print $remotesock "$answer"; |
$answer=<$remotesock>; |
$answer=<$remotesock>; |
chomp($answer); |
chomp($answer); |
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alarm(0); |
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}; |
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$SIG{ALRM}='DEFAULT'; |
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$SIG{__DIE__}=\&catchexception; |
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if ($@=~/timeout/) { |
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&logthis("Timed out during init: $conserver"); |
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exit; |
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} |
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&logthis("Init reply for $conserver: >$answer<"); |
&logthis("Init reply for $conserver: >$answer<"); |
if ($answer ne 'ok') { |
if ($answer ne 'ok') { |
my $st=120+int(rand(240)); |
my $st=120+int(rand(240)); |
Line 430 if ($cipher=new IDEA $cipherkey) {
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Line 471 if ($cipher=new IDEA $cipherkey) {
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} |
} |
$cmd="enc:$cmdlength:$encrequest\n"; |
$cmd="enc:$cmdlength:$encrequest\n"; |
} |
} |
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$SIG{ALRM}=sub { die "timeout" }; |
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$SIG{__DIE__}='DEFAULT'; |
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eval { |
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alarm(60); |
print $remotesock "$cmd\n"; |
print $remotesock "$cmd\n"; |
$answer=<$remotesock>; |
$answer=<$remotesock>; |
chomp($answer); |
chomp($answer); |
if ($answer ne '') { |
alarm(0); |
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}; |
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$SIG{ALRM}='DEFAULT'; |
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$SIG{__DIE__}=\&catchexception; |
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if (($answer ne '') && ($@!~/timeout/)) { |
unlink("$dfname"); |
unlink("$dfname"); |
&logthis("Delayed $cmd to $conserver: >$answer<"); |
&logthis("Delayed $cmd to $conserver: >$answer<"); |
&logperm("S:$conserver:$bcmd"); |
&logperm("S:$conserver:$bcmd"); |