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Solaris

TCP Problem

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Operating Systems Solaris TCP Problem
# 1  
Old 04-17-2008
TCP Problem
I am running a Java Client on Solaris 9 which communicates with the Server using TCP/IP.

The client transmits a FIN packet to server. The server sends a ACK, FIN enters LAST_ACK state and then waits for ACK from client. The client did not respond back leaving the server in LAST_ACK itself. Also the Client connects with the server on a fixed port, so the new connection attempt also results in a failure.

The point is, the client is written not to close the connection. I am not sure how and why the client sends a FIN. One more thing is the client is killed every day but this might not lead to this problem as ideally on killing, only a RST shud be sent to the server. The client is written on Java which will properly close the connection on exit.

My question is, Is der are any TCP/IP issue with the solaris stack which lead me to this problem? The server side is clean(even LAST_ACK sockets are teared down after 1000 seconds after which connection attempt is successful).
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LEARN ABOUT MOJAVE

net::server::proto::tcp

Net::Server::Proto::TCP(3)				User Contributed Perl Documentation				Net::Server::Proto::TCP(3)

NAME

	 Net::Server::Proto::TCP - Net::Server TCP protocol.

SYNOPSIS

       See Net::Server::Proto.

DESCRIPTION

       Protocol module for Net::Server.  This module implements the SOCK_STREAM socket type under INET (also known as TCP).  See
       Net::Server::Proto.

PARAMETERS

       There are no additional parameters that can be specified.  See Net::Server for more information on reading arguments.

INTERNAL METHODS

       "object"
	   Returns an object with parameters suitable for eventual creation of a IO::Socket::INET object listining on UDP.

       "log_connect"
	   Called before binding the socket to provide useful information to the logs.

       "connect"
	   Called when actually binding the port.  Handles default parameters before calling parent method.

       "reconnect"
	   Called instead of connect method during a server hup.

       "accept"
	   Override of the parent class to make sure necessary parameters are passed down to client sockets.

       "poll_cb"
	   Allow for psgi compatible interface during HTTP server.

       "read_until"
	   Takes a regular expression, reads from the socket until the regular expression is matched.

       "hup_string"
	   Returns a unique identifier that can be passed to the re-exec'ed process during HUP.

       "show"
	   Basic dumper of properties stored in the glob.

       "AUTOLOAD"
	   Handle accessor methods.

LICENCE

       Distributed under the same terms as Net::Server

perl v5.18.2							    2013-01-09						Net::Server::Proto::TCP(3)