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Special Forums IP Networking Clarification - Setting socket options at the same time when socket is listening Post 302515051 by jake24 on Monday 18th of April 2011 11:28:57 PM
Old 04-19-2011
Clarification - Setting socket options at the same time when socket is listening

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) for an incoming connection request with select() and then executing accept(fd,...) when a connection request arrives.
-- Task 2 - is a task that receives config commands from console and manipulates internal structures in response to them. As part of a particular command, it sets an option on the same listen socket using setsockopt(fd,....)

The option must be set on the listen socket fd ONLY when intimated to do so via a console command.

Can someone please clarify if it is okay to perform setsockopt on a socket when the same is being used in a simultaneous accept() call in another task?
 

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Net::Proxy::Connector(3pm)				User Contributed Perl Documentation				Net::Proxy::Connector(3pm)

NAME
Net::Proxy::Connector - Base class for Net::Proxy protocols SYNOPSIS
# # template for the zlonk connector # package Net::Proxy::Connector::zlonk; use strict; use Net::Proxy::Connector; our @ISA = qw( Net::Proxy::Connector ); # here are the methods you need to write for your connector # if it can be used as an 'in' connector sub listen { } sub accept_from { } # if it can be used as an 'out' connector sub connect { } # to process data sub read_from { } sub write_to { } 1; DESCRIPTION
"Net::Proxy::Connector" is the base class for all specialised protocols used by "Net::Proxy". METHODS
Class methods The base class provides the following methods: new() Instance methods set_proxy( $proxy ) Define the proxy that "owns" the connector. get_proxy() Return the "Net::Proxy" object that "owns" the connector. is_in() Return a boolean value indicating if the "Net::Proxy::Connector" object is the "in" connector of its proxy. is_out() Return a boolean value indicating if the "Net::Proxy::Connector" object is the "out" connector of its proxy. new_connection_on( $socket ) This method is called by "Net::Proxy" to handle incoming connections, and in turn call "accept_from()" on the 'in' connector and "connect()" on the 'out' connector. raw_read_from( $socket ) This method can be used by "Net::Proxy::Connector" subclasses in their "read_from()" methods, to fetch raw data on a socket. raw_write_to( $socket, $data ) This method can be used by "Net::Proxy::Connector" subclasses in their "write_to()" methods, to send raw data on a socket. raw_listen( ) This method can be used by "Net::Proxy::Connector" subclasses in their "listen()" methods, to create a listening socket on their "host" and "port" parameters. raw_accept_from( $socket ) This method can be used internaly by "Net::Proxy::Connector" subclasses in their "accept_from()" methods, to accept a newly connected socket. Subclass methods The following methods should be defined in "Net::Proxy::Connector" subclasses: Initialisation init() This method initalise the connector. Processing incoming/outgoing data read_from( $socket ) Return the data that was possibly decapsulated by the connector. write_to( $socket, $data ) Write $data to the given $socket, according to the connector scheme. "in" connector listen() Initiate listening sockets and return them. This method can use the "raw_listen()" method to do the low-level listen call. accept_from( $socket ) $socket is a listening socket created by "listen()". This method returns the connected socket. This method can use the "raw_accept_from()" method to do the low-level accept call. "out" connector connect() Return a socket connected to the remote server. AUTHOR
Philippe 'BooK' Bruhat, "<book@cpan.org>". COPYRIGHT
Copyright 2006 Philippe 'BooK' Bruhat, All Rights Reserved. LICENSE
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2009-10-18 Net::Proxy::Connector(3pm)
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