Handling Soap timeouts in PHP

Question

I\'m working on a project where I am verifying information from a user with a SOAP web service. I currently am taking care of errors assuming that I\'m receiving responses from

Answer 1

Simply setting the default_socket_timeout globally via the ini may not do what you want. This would affect SOAP requests, but would also affect other outgoing connections, including DB connections. Instead, override SoapClient's __doRequest() method to make the HTTP connection yourself. You can then set your own timeout on the socket, detect it, and throw exceptions that you can trap and handle.

class SoapClientWithTimeout extends SoapClient {

    public function __construct ($wsdl, $options = null) {
        if (!$options) $options = [];

        $this->_connectionTimeout =
            @$options['connection_timeout']
            ?: ini_get ('default_socket_timeout');
        $this->_socketTimeout =
            @$options['socket_timeout']
            ?: ini_get ('default_socket_timeout');
        unset ($options['socket_timeout']);

        parent::__construct($wsdl, $options);
    }

    /**
     * Override parent __doRequest to add a timeout.
     */
    public function __doRequest (
        $request, $location, $action, $version, $one_way = 0
    ) {
        // Extract host, port, and scheme.
        $url_parts = parse_url ($location);
        $host = $url_parts['host'];
        $port =
            @$url_parts['port']
            ?: ($url_parts['scheme'] == 'https' ? 443 : 80);
        $length = strlen ($request);

        // Form the HTTP SOAP request.
        $http_req = "POST $location HTTP/1.0\r\n";
        $http_req .= "Host: $host\r\n";
        $http_req .= "SoapAction: $action\r\n";
        $http_req .= "Content-Type: text/xml; charset=utf-8\r\n";
        $http_req .= "Content-Length: $length\r\n";
        $http_req .= "\r\n";
        $http_req .= $request;

        // Need to tell fsockopen to use SSL when requested.
        if ($url_parts['scheme'] == 'https')
            $host = 'ssl://'.$host;

        // Open the connection.
        $socket = @fsockopen (
            $host, $port, $errno, $errstr, $this->_connectionTimeout
        );
        if (!$socket)
            throw new SoapFault (
                'Client',
                "Failed to connect to SOAP server ($location): $errstr"
            );

        // Send the request.
        stream_set_timeout ($socket, $this->_socketTimeout);
        fwrite ($socket, $http_req);

        // Read the response.
        $http_response = stream_get_contents ($socket);

        // Close the socket and throw an exception if we timed out.
        $info = stream_get_meta_data ($socket);
        fclose ($socket);
        if ($info['timed_out'])
            throw new SoapFault (
                'Client',
                "HTTP timeout contacting $location"
            );

        // Extract the XML from the HTTP response and return it.
        $response = preg_replace (
            '/
                \A       # Start of string
                .*?      # Match any number of characters (as few as possible)
                ^        # Start of line
                \r       # Carriage Return
                $        # End of line
             /smx',
            '', $http_response
        );
        return $response;
    }

}