PHP Extension

Bind and Listen on a Randomly Selected Unused Port

See more Socket/SSL/TLS Examples

Demonstrates how to bind and listen on a randomly selected unused port.

Note:The ListenPort property used in this example is available starting in Chilkat v9.5.0.59.

PHP Extension

<?php

include("chilkat.php");

$success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$listenSocket = new CkSocket();

// Pass a value of 0 for the port number to randomly select
// an unused port.
// (The 2nd argument allows for a backlog of 25 pending connection requests when accepting connections.)
$success = $listenSocket->BindAndListen(5555,25);
if ($success != true) {
    print $listenSocket->lastErrorText() . "\n";
    exit;
}

// Find out what port was chosen.
// Note: The ListenPort propety was added in Chilkat v9.5.0.59
$listenPort = $listenSocket->get_ListenPort();
print 'Chosen listen port = ' . $listenPort . "\n";

?>