Hello, I'm writing a small app that sends a message to a server via TCP/SSL and then I need to wait for a full message back from the system. Can anyone see where I can improve the line of "sleep". I tried something using an EVAL, i read this on the internet somewhere, but it doesnt really seem to work.

Any other ideas? Thanks!

#!/usr/local/bin/perl
use strict;

#Create Socket Connection
use IO::Socket::SSL qw(debug3);
my $sock = IO::Socket::SSL->new(
    PeerAddr => 'LOCALHOST',
    PeerPort => '6999',
    SSL_version => 'SSLv3',
    SSL_cipher_list => 'COMPLEMENTOFDEFAULT',
    SSL_error_trap => 1 );
die "Could not create socket: " . IO::Socket::SSL::errstr() unless $so
+ck;

#Get the message
my $socket_message = shift;

print "Message Rec: $socket_message\n";

#Convert the hex message to a string
$socket_message = (hex2string($socket_message));

print "Translated Message: $socket_message\n";

print "*Sending Message*\n";

print $sock $socket_message;

print "*Message Sent*\n";

my $response;

sleep 4; #I wish there was a better way to do this!

#This times out the function so I can get everything from the server.
$SIG{ALRM} = sub { die "timeout" };
eval {
    alarm(1); #Change this 1 to something else for more time.
    while(1){
    sysread($sock, $response, 4000);
}
alarm(0);
};



close($sock);

print "Server Response: $response\n";

$response = (string2hex($response));

print "Server Response: $response\n";

print "Transaction Completed!";

#Hex Functions
sub string2hex
{
        my $in = shift;
        join(' ', map { sprintf("%02X", ord($_)) } split(//, $in));
}

sub hex2string
{
        my $in = shift;
        join('', map { &convert_word($_) } split(/\s+/, $in));
}

sub convert_word
{
        my $word = shift;

        my $rv = '';

        if (length($word) == 2)
        {
                $rv = chr(hex($_));
        }
        elsif (length($word) == 1)
        {
                $rv = $_;
        }

        $rv;
}


exit;

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In reply to Waiting for input, without sleep by Trihedralguy

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