Sends the request. 
    {
        if (!function_exists('curl_init') &&
            !( 
              @dl('php_curl' . PHP_SHLIB_SUFFIX)    || @dl('curl' . PHP_SHLIB_SUFFIX)
             )) {
        }
        if ($ch = curl_init()) {
            if (
                (is_null($this->_proxy)     || curl_setopt($ch, CURLOPT_PROXY, $this->_proxy)) &&
                (is_null($this->_proxyAuth) || curl_setopt($ch, CURLOPT_PROXYUSERPWD, $this->_proxyAuth)) &&
                curl_setopt($ch, CURLOPT_URL, $this->_uri) &&
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE) &&
                curl_setopt($ch, CURLOPT_POST, 1) &&
                curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $this->_sslverify) &&
                curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-type: text/xml; charset='.$this->_encoding, 
'User-Agent: PEAR_XML_RCP2/' . 
XML_RPC2_Client::VERSION)) &&
                curl_setopt($ch, CURLOPT_POSTFIELDS, $this->_postData)
            ) {
                if (($errno = curl_errno($ch)) != 0) {
                }
                $info = curl_getinfo($ch);
                if ($info['http_code'] != 200) {
                }
            } else {
            }
        } else {
        }
        return true;
    }