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Access an IoT Service on HANA Trial from HANA Trial HTML5 App


we are trying to call a HANA IoT Post service e.g. https://iotmms . >

However, this does not work for us. After following a description in

Communicate with IoT in your WebIDE project (here the push to device is described) .

when using the the of the IOT helper code in WEBIDE we get errors of type:

MLHttpRequest cannot load https://iotmms . >. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '' is therefore not allowed access. The response had HTTP status code 401

Although there are some blogs stating that you cannot connect from a local HANATRIAL website to the local HANATRIAL .xsodata services, we wonder whether there is a way for the IoT services to be called locally on the trial landscape.

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  • Best Answer
    Posted on Jul 28, 2016 at 07:05 AM

    Hi Marcus,

    as far as I understood you use that "IOT.js" helper library that you "injected" in WebIDE like described for example here [1]? Did you configure your destinations as well? Communication is supposed to be done via destinations otherwise you will face those CORS problems.



    [1] Build IoT Applications using WebIDE

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    • Hi Anton,

      after all I got the posting to the IOT services working.

      It was somewhat tedious to get the right ingrediences from the different tutorials:

      • Getting the destination settings in neo_app.json and on HANA trial
      • Authorization and the Bearer token in the post request
      • Using the IoT.js functions

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