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Full Discussion: simple socket programming in perl
Top Forums Shell Programming and Scripting simple socket programming in perl Post 302228155 by zedex on Saturday 23rd of August 2008 05:49:02 AM
Old 08-23-2008
simple socket programming in perl
hi

i want to write simple socket program which will listen on socket . here is the code
Code:
## read msg on socket 
#! /usr/bin/perl

use IO::Socket::INET;

my $MySocket= IO::Socket::INET->new(LocalPort=>1234,
                                                       Proto=>'udp') ;
while () {
   $MySocket->recv($text,128);
   if ( $text =~ /Done/i )
   {
      print " ftpdone\n"  ;
   } else
   {
      print " FTP Failed :Msg from Server [$text]\n" ;
      exit 1 ;
   }
}

## send message to socket
use IO::Socket::INET;
$MySocket=new IO::Socket::INET->new(PeerPort=>1234,
                                    Proto=>'udp',
                                    PeerAddr=>'zzz.zzz.zz.zz');

$msg="ftp failed" ;
$MySocket->send($msg);

now i want is that receiver program should try to read on port for 10 sec if no msg is received then wait for minute and again check for message for 10 sec do this for 10 minutes ( inshort check if any message is received in 10 minutes )

but code waits at
Code:
$MySocket->recv($text,128);

line for mesg till it receives msg. Timeout => 10 is not working
what else i can do ? any other module ?? or any work around ??
 

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LEARN ABOUT PHP

socket_set_block

SOCKET_SET_BLOCK(3)							 1						       SOCKET_SET_BLOCK(3)

socket_set_block - Sets blocking mode on a socket resource

SYNOPSIS

       bool socket_set_block (resource	$socket)

DESCRIPTION

	The socket_set_block(3) function removes the O_NONBLOCK flag on the socket specified by the $socket parameter.

	When  an operation (e.g. receive, send, connect, accept, ...) is performed on a blocking socket, the script will pause its execution until
       it receives a signal or it can perform the operation.

PARAMETERS

	      o $socket
		- A valid socket resource created with socket_create(3) or socket_accept(3).

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      socket_set_block(3) example

	      <?php
	      $socket = socket_create_listen(1223);
	      socket_set_block($socket);

	      socket_accept($socket);
	      ?>

	       This example creates a listening socket on all interfaces on port 1223 and sets the socket to O_BLOCK mode.  socket_accept(3)  will
	      hang until there is a connection to accept.

SEE ALSO

       socket_set_nonblock(3), socket_set_option(3).

PHP Documentation Group 												       SOCKET_SET_BLOCK(3)
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