Check Whether a Socket Is Writable

See more Socket/SSL/TLS Examples

Demonstrates Socket.CheckWriteable, which waits for the connected socket to become writable. It returns 1 if writable, 0 if it did not become writable before the timeout, or -1 on error.

<?php

use Chilkat2\Socket;

$socket = new Socket();

// Connect to the server using TLS.
$bTls = true;
$maxWaitMs = 5000;
try {
    $socket->Connect('example.com', 5000, $bTls, $maxWaitMs);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Wait up to 5 seconds for the socket to become writable.  Returns 1 if writable, 0 if it did not
// become writable before the timeout, or -1 on error.
$writable = $socket->CheckWriteable(5000);
if ($writable < 0) {
    echo $socket->LastErrorText, "\n";
    exit;
}

if ($writable != 1) {
    echo "The socket did not become writable before the timeout.\n";
    exit;
}

echo "The socket is writable.\n";