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Top Forums Programming can client connect() when server in sleep(300); after listen(fd,5); Post 24742 by Perderabo on Wednesday 17th of July 2002 08:49:40 AM
Old 07-17-2002
You can't do that.

Your accept() should be able to either block or not block at your control. If you turned on a non-blocking option on the socket, then yes your accept() call will return an error if there are no pending connections. If you then decide to sleep(), then any connections that arrive while your server is asleep will become become pending connections. After the sleep(), it could re-issue the accept() and establish a connection.

Turning on a non-blocking option and then polling from time to time is supposed to work. But I have never seen it done. I would not sleep for 300 seconds though. That is a very long time to keep a connection waiting for a connect.

But the usual method is to allow accept() to block and wait for a connection to occur.

If your accept() is not blocking then somehow you must have asked it not to. The usual way of doing this would be to have set O_NONBLOCK.

If your accept() call does not behave as I described, then it must be broken. But I find that hard to believe. Never blocking would be a very serious problem.
 

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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)
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