PHP HTTP proxy for XMPP/BOSH connections using CORS

bosh-proxy.php

<?php 

header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Credentials: true ");
header("Access-Control-Allow-Methods: OPTIONS, GET, POST");
header("Access-Control-Allow-Headers: Content-Type, Depth, User-Agent, X-File-Size, X-Requested-With, If-Modified-Since, X-File-Name, Cache-Control");

$url = "http://example.com/http-bind"; // URI of the HTTP/BOSH gate to the XMPP server

$postdata = file_get_contents('php://input');
$opts = array('http' =>
	array(
		'method'  => 'POST',
		'header'  => 'Accept:text/xml',
		'header'  => 'Content-type:text/xml',
		'header'  => 'Content-Length: '.strlen( $postdata ),
		'content' => $postdata
	)
);
$context = stream_context_create( $opts );
$response = file_get_contents( $url, false, $context );
echo $response;

?>

Always make sure to put the CORS headers first, otherwise chrome is in trouble!