/**
* Creates a new HTTP POST request with the appropriate content, headers
* and such, which can then be used to send JSON-RPC requests.
* @param string $content the request content
* @return \Zend\Http\Request the request
* @throws ClientException if the Content-Type header cannot be set
*/
private function createHttpRequest($content)
{
$httpRequest = new \Zend\Http\Request();
$httpRequest->setUri($this->_endPoint);
$httpRequest->setMethod(\Zend\Http\Request::METHOD_POST);
$httpRequest->setContent($content);
// Set headers
$headers = $httpRequest->getHeaders();
if (!$headers instanceof \Zend\Http\Headers) {
throw new ClientException('Unable to configure HTTP headers');
}
$headers->addHeaderLine('Content-Type', 'application/json');
$httpRequest->setHeaders($headers);
return $httpRequest;
}