SOAP fault, curl success

[johanafm]

When trying to use a web service function with SoapClient I get fault code "HTTP" and fault text "Could not connect to host", but when doing the exact same thing except for using a child class to override SoapClient::__doRequest() and have it use curl to send the request, everything works fine. Does anyone have an idea why?

Does not work

$opts = array(
	'trace' => 1,
	'soap_version' => SOAP_1_2,
	'exceptions' => 0,
	'login' => DibsWS::APIUSER,
	'password' => DibsWS::APIPASS,
	'authentication' => SOAP_AUTHENTICATION_BASIC
);
# instantiating works fine
$s = new SoapClient($wsdl, $opts);
# and so do these
$s->__getFunctions();
$s->__getTypes();

# Could not connect to host on this line, "theFunc" is specified in the WSDL doc
$result = $s->theFunc($params);

Works

class CurlSoapClient extends SoapClient
{
	function __doRequest($request, $location, $action, $version)
	{
		$headers = array
		(
			'Method: POST',
			'Connection: Keep-Alive',
			'User-Agent: PHP-SOAP-CURL',
			'Content-Type: application/soap+xml; charset=utf-8',
		);

	$ch = curl_init($location);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($ch, CURLOPT_POST, true );
	curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
	curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
	if ($this->login && $this->password && $this->authentication)
	{
		curl_setopt($ch, CURLOPT_HTTPAUTH, $this->curlAuth);
		curl_setopt($ch, CURLOPT_USERPWD, $this->user.':'.$this->password);
	}
	curl_setopt($ch, CURLINFO_HEADER_OUT, true);

	$response = curl_exec($ch);

	if (curl_errno($ch) !== 0)
	{
		error_log('CurlSoapClient, curl error ('.curl_errno($ch).'): ' .
			curl_error($ch));
		return false;
	}

	$this->__last_request_headers = curl_getinfo($ch, CURLINFO_HEADER_OUT);
	$this->__last_request = $request;

	return $response;
}
}
$s = new SoapClient($wsdl, $opts);
$result = $s->theFunc($params);