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I tried to implement an async task each time a node is inserted by sending by POST the json_encoded node object to my processing url.
I might be completely stupid but it seems that the httprl module is not sending any data by POST unfortunately :(
EDIT = I AM STUPID => RTFM
* @param array $options * (optional) An array that can have one or more of the following elements: * - headers: An array containing request headers to send as name/value pairs. * Some of the more useful headers: * - For POST: 'Content-Type' => 'application/x-www-form-urlencoded',