Custom HTTP

Custom HTTP

Due to the common usage in Home Automation devices with a HTTP based REST interface, the Custom HTTP driver is intended to facilitate the integration with these equipments.

Connection

The Connection Settings has the next parameters:

  • Base url : Base URL of destination for each HTTP Request. For each resource that has an endpoint specified, the URL of the request is the concatenation of Base url + endpoint.
  • Headers (OPTIONAL) : Specify the Headers for each HTTP request made by the driver as JSON Object. Eg: {"Header1": "valueX", "Header2": "valueY"}. If this field is left empty the next headers are used by default: {"Accept": "*/*", "Content-Length": "${Length}","Host": "${Host URL}"}.
  • Poll url (OPTIONAL) : If this field is not empty, the driver makes a GET HTTP Request to the Poll url every 60 seconds. The driver state depends if the returned status code is 2XX Success or not. On the other hand, if this field is left empty, the driver state is determined by the last returned status code of a request made. In this case the driver state will be equal to Online if the returned status code is 2XX Success and Offline if not.

Resources

The driver presents 4 (_CUSTOM) resource types. Each one corresponds with a type of HTTP request:

  • GET
  • PUT
  • POST
  • DELETE

Each resource is composed by:

  • Name of the resource.
  • HTTP request type.
  • Address

Resource Address Format

The resource address has the next format ENDPOINT;PAYLOAD, which ENDPOINT will be used as the endpoint url (concatenated next to the Base url value) and PAYLOAD the payload data of the HTTP request. Both the ENDPOINT and PAYLOAD are OPTIONAL. If only PAYLOAD is specified, the usage of ; is MANDATORY. Usage of “;” (semi-colon) on ENDPOINT must be encoded as %3B.

Also, an EMPTY resource address is valid.

Resource address examples
  • /subpath;key=value
  • subpath1/subpath2;{"json": "example"}
  • subpath
  • ;data1=value1&data2=value2

Event and Command

The only COMMAND for each request is the _SEND command which executes the HTTP request.

The only EVENT for each request is the _RESPONSE event which represents the response status code obtained from the HTTP request executed.