Wait for a Socket to Become Writable

See more Socket/SSL/TLS Examples

Demonstrates Socket.SelectForWriting, which waits for the socket, or sockets in a socket set, to become writable. It returns 1 if writable, 0 on timeout, or -1 on error.

<?php

$success = 0;

$socket = new COM("Chilkat.Socket");

//  Connect to the server using TLS.
$bTls = 1;
$maxWaitMs = 5000;
$success = $socket->Connect('example.com',5000,$bTls,$maxWaitMs);
if ($success == 0) {
    print $socket->LastErrorText . "\n";
    exit;
}

//  Wait up to 5 seconds for the socket (or sockets in a socket set) to become writable.  Returns 1 if
//  writable, 0 on timeout, or -1 on error.
$ready = $socket->SelectForWriting(5000);
if ($ready < 0) {
    print $socket->LastErrorText . "\n";
    exit;
}

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

print 'The socket is ready for writing.' . "\n";

?>