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Forum Azure Sphere HTTP Client C Code Example?
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Azure Sphere HTTP Client C Code Example?

Sean_Miller
Sean_Miller over 5 years ago

Does anyone have any leads on a tutorial or example code for using the Azure as an HTTP Client with C code?

 

In my past, I've successfully used C++ on Linux microcontrollers to act in part as an HTTP Client to hit APIs such as Darksky or Nest.  I attempted to port the code to the Azure C environment and its definitely tedious - leaving me to think there are probably some Visual Studio references that could readily be used instead.

 

Thanks,

Sean

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  • peterfenn
    peterfenn over 5 years ago +3 verified
    Sean There are some HTTP related projects under Microsoft Azure Sphere samples: https://docs.microsoft.com/en-us/azure-sphere/resources/sample-links https://github.com/Azure/azure-sphere-samples -Pete…
  • Sean_Miller
    Sean_Miller over 5 years ago in reply to peterfenn +3 suggested
    Was able to get the example HTTPS client code to work. Had it hit www.google.com with success. However, api.darksky.net and the Nest Thermostat API gave this error Connected to firebase-apiserver17-tah01…
  • Sean_Miller
    Sean_Miller over 5 years ago +2
    Man, you are helpful and quick! I need to be building my deck today on my day off, but you keep feeding my brain distracting me. -Sean
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  • Sean_Miller
    0 Sean_Miller over 5 years ago

    Man, you are helpful and quick!  I need to be building my deck today on my day off, but you keep feeding my brain distracting me.

     

    -Sean

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  • peterfenn
    0 peterfenn over 5 years ago in reply to Sean_Miller

    Sean

     

    Not sure why you are bumping into this. The most efficient way to get quick resolution on this is to:
    a) Summarize the issue as succinctly as possible and
    b) Post this to the Microsoft MSDN Azure Sphere forum,
    ...that way we can get Microsoft specialist resources in the loop to advise

    Here's the link:
    https://social.msdn.microsoft.com/Forums/en-US/home?forum=azuresphere

    -Peter

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  • Sean_Miller
    0 Sean_Miller over 5 years ago in reply to peterfenn

    Thanks!  I entered a ticket.

     

    I found one post with a similar issue that was resolved, but it was not clear on how he resolved it.  So, there is light at the end of the tunnel.

     

    After this, I hope to make it catch web socket hits on a port.  Once I got this, I'll have it fully IoT tricked out ready to be an Alexa EndPoint.

     

    See ya',

    Sean

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  • Sean_Miller
    0 Sean_Miller over 5 years ago in reply to peterfenn

    Haven't heard back yet on the forum, but I found this article that talked about how to work around the certificate.

     

    I added this line in the main where the curl is doing all its setopts:

     

    res = curl_easy_setopt(curlHandle, CURLOPT_SSL_VERIFYPEER, false);

     

    It allowed it to return the api.  I feel I'm somewhat circumventing security, but, hey, I'm just asking for the current weather.

     

    -Sean

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  • peterfenn
    0 peterfenn over 5 years ago in reply to Sean_Miller

    Sean

     

    You seem pretty resourceful! Good to hear you have a workaround :-)

    PS: Which Weather APIs are you calling? (AccuWeather / Weatherbit / OpenWeatherMap / Dark Sky, etc?)

    -Peter

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  • Sean_Miller
    0 Sean_Miller over 5 years ago in reply to peterfenn

    I’m using Dark sky.  It returns a Json string that has about everything I’d ever need.

     

    Next, I need to see if Microsoft already has a parser I can leverage.

     

    see ya,

    Sean

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  • Sean_Miller
    0 Sean_Miller over 5 years ago in reply to Sean_Miller

    For the JSON Parser, I found a lightweight one is already part of the AvnetStarterKitReferenceDesign solution.  Here is it's GitHub:

     

    https://github.com/kgabis/parson

     

    One less thing.  :-)

    Sean

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  • Sean_Miller
    0 Sean_Miller over 5 years ago in reply to Sean_Miller

    For the JSON Parser, I found a lightweight one is already part of the AvnetStarterKitReferenceDesign solution.  Here is it's GitHub:

     

    https://github.com/kgabis/parson

     

    One less thing.  :-)

    Sean

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