Non-blocking client connection -- works without error to connect to non-blocking SSL socket server written in PHP

gistfile1.php

<?php

$uri = 'tcp://127.0.0.1:9382';


$context = stream_context_create(['ssl' => [
    'verify_peer' => FALSE,
    'allow_self_signed' => TRUE
]]);

$socket = stream_socket_client(
    $uri,
    $errNo,
    $errStr,
    42, // <--- not used with ASYNC connections, so the value doesn't matter
    STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT,
    $context
);

if (FALSE === $socket && $errNo !== 10035) {
    $errorMsg = "Socket connection failure: tcp://$host:$port";
    $errorMsg .= $errNo ? "; [Error# $errNo] $errStr" : '';
    throw new Exception($errorMsg);
}

while (TRUE) {
    $read = $ex = null;
    $write = array($socket);
    if (stream_select($read, $write, $ex, 0, 0)) {
        echo "sock ready to write\r\n";
        break;
    }
}

while (TRUE) {
    $crypto = stream_socket_enable_crypto($socket, TRUE, STREAM_CRYPTO_METHOD_TLS_CLIENT);
    
    if ($crypto == TRUE) {
        echo "crypto enabled on " . stream_socket_get_name($socket, TRUE) . "!\r\n";
        break;
    } elseif ($crypto === FALSE) {
        echo "an error occurred while attempting to enable crypto";
        break;
    }
}

fclose($socket);