09-16-2011
Gidday,
Quote:
Originally Posted by
Corona688
I'm pretty sure this is a kernel bug. I get the same behavior on 2.6.19 sometimes; and unfortunately I am forced to stick with this version for the time being!
To confirm this assumption, it would be useful to tcpdump what the OP did above. We would see what happens at the protocol level, and possibly trace kernel misbehavior. I'd be in particular interested to know if the server sends RST after closing the socket, and if the client received it at the link layer.
Cheers,
/Lew
8 More Discussions You Might Find Interesting
1. AIX
We're having problems getting disconnected from AIX with our telnet sessions.
I can't ping the server when this happens, either. Other serves can be pinged at the same time.
This happens both at unix and within the database. Database locks remain when editing files. unix logins remain after... (0 Replies)
Discussion started by: e1lyons
0 Replies
2. UNIX for Advanced & Expert Users
Hi,
I was porting ipv4 application to ipv6; i was done with TCP transports. Now i am facing problem with SCTp transport at runtime.
To test SCTP transport I am using following server and client socket programs. Server program runs fine, but client program fails giving Invalid Arguments for... (0 Replies)
Discussion started by: chandrutiptur
0 Replies
3. Windows & DOS: Issues & Discussions
i am using Putty to do ssh to all the unix nodes that we have in our work environment. it is very strange that all my network connections will timeout quickly in 10 mins, it can either be a putty connection, sqlplus or toad. is there some setting that can help to prevent this. please let me know... (3 Replies)
Discussion started by: sudhiroracle
3 Replies
4. Programming
Hello everyone. Thanks for reading. I am using Ubuntu 7.04 to experience this problem:
I have written my own programs that communicate to eachother and I am having a hard time detecting a TCP socket disconnect when the remote side's computer has a power-failure (for example).
On the computer... (6 Replies)
Discussion started by: pjwhite
6 Replies
5. IP Networking
I need clarification on whether it is okay to set socket options on a listening socket
simultaneously when it is being used in an accept() call?
Following is the scenario:-
-- Task 1 - is executing in a loop - polling a listen socket, lets call it 'fd', (whose file descriptor is global)... (2 Replies)
Discussion started by: jake24
2 Replies
6. Red Hat
Hi , My redhat 5 frequently disconnects from network. Once rebooted , network is working for one day or two. After that the NIC suddently stops working. Even if i give "#service network restart" or ifup eth0 commands it won't come up. I even tried reconfigure the network card. but no use. Only... (6 Replies)
Discussion started by: dknattukal
6 Replies
7. UNIX for Dummies Questions & Answers
Is there a way to have persistent terminal windows to redhat server across viewer disconnects? I can do that with the help of an extra MS Windows server and rdp, but is there a way of doing that without the Windows server?
Here's the scenario. I have multiple redhat servers (VMs) which have no... (3 Replies)
Discussion started by: ad101
3 Replies
8. SCO
I have inherited and SCO OpenServer Release 6 server. The clients connect using telnet to get to a proprietary database application for Service tickets. The issue I am currently having is that the connection just stops abruptly and you can see "telnet session terminated" on the terminal emulation... (22 Replies)
Discussion started by: sean6605
22 Replies
LEARN ABOUT DEBIAN
log::log4perl::appender::socket
Appender::Socket(3pm) User Contributed Perl Documentation Appender::Socket(3pm)
NAME
Log::Log4perl::Appender::Socket - Log to a socket
SYNOPSIS
use Log::Log4perl::Appender::Socket;
my $appender = Log::Log4perl::Appender::Socket->new(
PeerAddr => "server.foo.com",
PeerPort => 1234,
);
$appender->log(message => "Log me
");
DESCRIPTION
This is a simple appender for writing to a socket. It relies on IO::Socket::INET and offers all parameters this module offers.
Upon destruction of the object, pending messages will be flushed and the socket will be closed.
If the appender cannot contact the server during the initialization phase (while running the constructor "new"), it will "die()".
If the appender fails to log a message because the socket's "send()" method fails (most likely because the server went down), it will try
to reconnect once. If it succeeds, the message will be sent. If the reconnect fails, a warning is sent to STDERR and the "log()" method
returns, discarding the message.
If the option "silent_recovery" is given to the constructor and set to a true value, the behaviour is different: If the socket connection
can't be established at initialization time, a single warning is issued. Every log attempt will then try to establish the connection and
discard the message silently if it fails. If you don't even want the warning, set the "no_warning" option to a true value.
Connecting at initialization time may not be the best option when running under Apache1 Apache2/prefork, because the parent process creates
the socket and the connections are shared among the forked children--all the children writing to the same socket could intermingle
messages. So instead of that, you can use "defer_connection" which will put off making the connection until the first log message is sent.
EXAMPLE
Write a server quickly using the IO::Socket::INET module:
use IO::Socket::INET;
my $sock = IO::Socket::INET->new(
Listen => 5,
LocalAddr => 'localhost',
LocalPort => 12345,
Proto => 'tcp');
while(my $client = $sock->accept()) {
print "Client connected
";
while(<$client>) {
print "$_
";
}
}
Start it and then run the following script as a client:
use Log::Log4perl qw(:easy);
my $conf = q{
log4perl.category = WARN, Socket
log4perl.appender.Socket = Log::Log4perl::Appender::Socket
log4perl.appender.Socket.PeerAddr = localhost
log4perl.appender.Socket.PeerPort = 12345
log4perl.appender.Socket.layout = SimpleLayout
};
Log::Log4perl->init($conf);
sleep(2);
for(1..10) {
ERROR("Quack!");
sleep(5);
}
COPYRIGHT AND LICENSE
Copyright 2002-2009 by Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2010-07-21 Appender::Socket(3pm)