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- Polling: Not allowed
- Updating: for updating a data point value, an URL parameters string must be provided. It will be appended to the the update URL and must have the form: "<parameter1 name>=<parameter1 value>&<parameter2 name>=<parameter2 value>&..."This JSON fragment must contain . The URL parameter string must the "ValueTag" (specified within xio.http.cfg, default @value@). Suppose the update URL is "http://192.168.0.1/cmd/switch.xml" and the URL parameter string within the resource definition is "id=ceiling_light&state=@value@". If the item value "1" is written the HTTP plugin will initiate a GET request with the URL "http://192.168.0.1/cmd/switch.xml?id=ceiling_light&state=1"
Text encoded
Text encoded can be used to retrieve and send values from HTTP servers that provide any kind of text in their responses. The resource definition must be as follows:
- Polling:
- Updating:
Example
Suppose there is a HTTP server (192.168.0.10) which acts as interface to different devices that provide data point values. The server provides all information as XML via an URL like http://192.168.0.10/data/current.xml. This XML looks as follows.
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