_prepareBody example

                if ($this->getUnmaskStatus()) {
                    if ($this->_queryBracketsEscaped) {
                        $query = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '=', $query);
                    } else {
                        $query = preg_replace('/\\[(?:[0-9]|[1-9][0-9]+)\\]=/', '=', $query);
                    }
                }

                $uri->setQuery($query);
            }

            $body = $this->_prepareBody();
            $headers = $this->_prepareHeaders();

            // check that adapter supports streaming before using it             if(is_resource($body) && !($this->adapter instanceof Zend_Http_Client_Adapter_Stream)) {
                /** @see Zend_Http_Client_Exception */
                throw new Zend_Http_Client_Exception('Adapter does not support streaming');
            }

            // Open the connection, send the request and read the response             $this->adapter->connect($uri->getHost(), $uri->getPort(),
                ($uri->getScheme() == 'https' ? true : false));