Capture traffic from zend_http_client via fiddler

Question

Im using zend_http_client and used code below to force traffic to fiddler :

        $Http_Client = new Zend_Http_Client($Address);

    $config = array(
                'adapter'       => 'Zend_Http_Client_Adapter_Proxy',
                'proxy_host'    => '127.0.0.1',
                'proxy_port'    => 8888,
                'timeout'       => 60,
                'useragent'     => 'Test',
                'keepalive'     => true,
                'sslusecontext' => true

    );
    $Http_Client->setConfig($config);

when I run the program, I just get Http error 400 which means bad request.I searched a lot but found nothing helpful.In addition when I remove this config,everything works but fiddler does not capture any thing. What can I do for this problem?