<h2>Editing: class-IXR-client.php</h2>
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/**
 * IXR_Client
 *
 * @package IXR
 * @since 1.5.0
 *
 */
class IXR_Client
{
    var $server;
    var $port;
    var $path;
    var $useragent;
    var $response;
    var $message = false;
    var $debug = false;
    var $timeout;
    var $headers = array();

    // Storage place for an error message
    var $error = false;

	/**
	 * PHP5 constructor.
	 */
    function __construct( $server, $path = false, $port = 80, $timeout = 15 )
    {
        if (!$path) {
            // Assume we have been given a URL instead
            $bits = parse_url($server);
            $this-&gt;server = $bits['host'];
            $this-&gt;port = isset($bits['port']) ? $bits['port'] : 80;
            $this-&gt;path = isset($bits['path']) ? $bits['path'] : '/';

            // Make absolutely sure we have a path
            if (!$this-&gt;path) {
                $this-&gt;path = '/';
            }

            if ( ! empty( $bits['query'] ) ) {
                $this-&gt;path .= '?' . $bits['query'];
            }
        } else {
            $this-&gt;server = $server;
            $this-&gt;path = $path;
            $this-&gt;port = $port;
        }
        $this-&gt;useragent = 'The Incutio XML-RPC PHP Library';
        $this-&gt;timeout = $timeout;
    }

	/**
	 * PHP4 constructor.
	 */
	public function IXR_Client( $server, $path = false, $port = 80, $timeout = 15 ) {
		self::__construct( $server, $path, $port, $timeout );
	}

	/**
	 * @since 1.5.0
	 * @since 5.5.0 Formalized the existing `...$args` parameter by adding it
	 *              to the function signature.
	 *
	 * @return bool
	 */
    function query( ...$args )
    {
        $method = array_shift($args);
        $request = new IXR_Request($method, $args);
        $length = $request-&gt;getLength();
        $xml = $request-&gt;getXml();
        $r = &quot;\r\n&quot;;
        $request  = &quot;POST {$this-&gt;path} HTTP/1.0$r&quot;;

        // Merged from WP #8145 - allow custom headers
        $this-&gt;headers['Host']          = $this-&gt;server;
        $this-&gt;headers['Content-Type']  = 'text/xml';
        $this-&gt;headers['User-Agent']    = $this-&gt;useragent;
        $this-&gt;headers['Content-Length']= $length;

        foreach( $this-&gt;headers as $header =&gt; $value ) {
            $request .= &quot;{$header}: {$value}{$r}&quot;;
        }
        $request .= $r;

        $request .= $xml;

        // Now send the request
        if ($this-&gt;debug) {
            echo '&lt;pre class=&quot;ixr_request&quot;&gt;'.htmlspecialchars($request).&quot;\n&lt;/pre&gt;\n\n&quot;;
        }

        if ($this-&gt;timeout) {
            $fp = @fsockopen($this-&gt;server, $this-&gt;port, $errno, $errstr, $this-&gt;timeout);
        } else {
            $fp = @fsockopen($this-&gt;server, $this-&gt;port, $errno, $errstr);
        }
        if (!$fp) {
            $this-&gt;error = new IXR_Error(-32300, 'transport error - could not open socket');
            return false;
        }
        fputs($fp, $request);
        $contents = '';
        $debugContents = '';
        $gotFirstLine = false;
        $gettingHeaders = true;
        while (!feof($fp)) {
            $line = fgets($fp, 4096);
            if (!$gotFirstLine) {
                // Check line for '200'
                if (strstr($line, '200') === false) {
                    $this-&gt;error = new IXR_Error(-32300, 'transport error - HTTP status code was not 200');
                    return false;
                }
                $gotFirstLine = true;
            }
            if (trim($line) == '') {
                $gettingHeaders = false;
            }
            if (!$gettingHeaders) {
            	// merged from WP #12559 - remove trim
                $contents .= $line;
            }
            if ($this-&gt;debug) {
            	$debugContents .= $line;
            }
        }
        if ($this-&gt;debug) {
            echo '&lt;pre class=&quot;ixr_response&quot;&gt;'.htmlspecialchars($debugContents).&quot;\n&lt;/pre&gt;\n\n&quot;;
        }

        // Now parse what we've got back
        $this-&gt;message = new IXR_Message($contents);
        if (!$this-&gt;message-&gt;parse()) {
            // XML error
            $this-&gt;error = new IXR_Error(-32700, 'parse error. not well formed');
            return false;
        }

        // Is the message a fault?
        if ($this-&gt;message-&gt;messageType == 'fault') {
            $this-&gt;error = new IXR_Error($this-&gt;message-&gt;faultCode, $this-&gt;message-&gt;faultString);
            return false;
        }

        // Message must be OK
        return true;
    }

    function getResponse()
    {
        // methodResponses can only have one param - return that
        return $this-&gt;message-&gt;params[0];
    }

    function isError()
    {
        return (is_object($this-&gt;error));
    }

    function getErrorCode()
    {
        return $this-&gt;error-&gt;code;
    }

    function getErrorMessage()
    {
        return $this-&gt;error-&gt;message;
    }
}
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