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Full Discussion: Socket programming
Top Forums Programming Socket programming Post 302420896 by jim mcnamara on Wednesday 12th of May 2010 10:13:41 PM
Old 05-12-2010
Quote:
1. open user specified port for TCP connection and set LISTEN mode. I must be able to respond to client request but I must also be able to send data to clientin case of an event
Is the lcient listening on a known port. If not you cannot call connect() and get a connection to your client. It has nothing to do with the listening port, necessarily, unless you have a simplex connection (both sides have a listener).

I personally believe select() is a better choice for what you are doing than is poll().
Of course that is opinion. Some implementaions support pselect() = even better.

Consider some reading. Normally what socket apps do:
loop thru their collection of listeners looking for a connect request. Take a nanosleep() or usleep() and loop again.

select() is good for this. When you get a connection request create a thread to play with it. The thread exits when the socket is closed on the remote side. Or the connection errors out.

I think beej still has this site going, it is a very good place to get some basic ideas. I just connected it still works. Amazing.
Beej's Guide to Network Programming
Last edited by jim mcnamara; 05-13-2010 at 06:14 AM..
This User Gave Thanks to jim mcnamara For This Post:
_thomas
 

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LEARN ABOUT CENTOS

alcc

ALCC(1) 							  aMule utilities							   ALCC(1)

NAME

       alcc - text based eD2k links calculator for aMule

SYNOPSIS

       alcc [-p] [-v] <inputfiles_list>

       alcc [-h]

DESCRIPTION

       Compute the eD2k links of all the input files given in the <inputfiles_list> (There can be one or more files).

       [ -p, --parthashes ]
	      Compute and add part hashes to the computed eD2k links.

       [ -h, --help ]
	      Prints a short usage description.

       [ -v, --verbose ]
	      Be verbose - show also calculation steps.

REPORTING BUGS

       Please report bugs either on our forum (http://forum.amule.org/), or in our bugtracker (http://bugs.amule.org/).  Please do not report bugs
       in e-mail, neither to our mailing list nor directly to any team member.

COPYRIGHT

       aMule and all of its related utilities are distributed under the GNU General Public License.

SEE ALSO

       alc(1), amuled(1), amulecmd(1), amuleweb(1), cas(1), ed2k(1), wxcas(1), xas(1)

AUTHOR

       This manpage was written by Vollstrecker <amule@vollstreckernet.de>

aMule eD2k links calculator					   November 2011							   ALCC(1)
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