(PHP ActiveX) Bind and Listen on a Randomly Selected Unused Port

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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Socket')
$listenSocket = new COM("Chilkat.Socket");

// 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 != 1) {
    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->ListenPort;
print 'Chosen listen port = ' . $listenPort . "\n";

?>