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2021-04-09 11-42-43
assif_tiger
 
MVP
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Using Same instance of the HttpClient class to call REST API in Mobile App
Question

Hi,
I want to integrate 2 REST API with the Mobile application, where the one is for Login & another to GetData.

API Detail:

Login API : Method -  POST , Request Body : Username & Password
GetData API :Method - GET

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API behavior on Postman : The second API GetData works only when I am logged-in via the Login API.
In-case If I am not logged-in , the second API will return access denied.

API behavior with Visual Studio C# : I confirmed the instance case with C# by creating 2 different instance of the HttpClient class & calling the GetData API respectively. But here only the instance worked from which I initially hit the Login API, same as Postman.

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How can I maintain or re-use the same instance of the HttpClient class in Outsystems to call the GetData API.

Thanks,
Assif

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13 Sep 2018
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2021-04-09 11-42-43
assif_tiger
 
MVP
Solution

Resolved :)

Created an Extension & then I am calling the respective API from this Extension.


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15 May 2019
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2020-09-15 13-07-23
Kilian Hekhuis
 
MVP

Hi Assif,

Do you have documentation for this REST API? Although I understand what you ask, I don't think that's the solution to this problem.

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13 Sep 2018
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2021-04-09 11-42-43
assif_tiger
 
MVP

Hi,

Please ref the below screenshots:

1- Request with  same HttpClient Object Working Fine : C# Snippet Sample


2- Request with different HttpClient Object Not Working : C# Snippet Sample


 Same behavior occurred with Outsystems, as I am consuming both REST API separately & thus I am calling the API action individually. The Second API GetData works on same Http Object Request, from which the Login API is called Initially.

Thanks



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13 Sep 2018
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2020-09-15 13-07-23
Kilian Hekhuis
 
MVP

HI Assif,

What you're seeing is the result of how the REST API is implemented, but that doesn't mean it's the only way that this can be solved. Therefore, again, please direct us to the API specification. Unless it says "you need the same HttpClient" (in which case they're raving mad), it's very likely it can be solved differently (also not that REST calls should by definition be stateless, so if it worked like you say, it would violate REST principles as well).

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13 Sep 2018
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2021-04-09 11-42-43
assif_tiger
 
MVP

Kilian Hekhuis wrote:

HI Assif,

What you're seeing is the result of how the REST API is implemented, but that doesn't mean it's the only way that this can be solved. Therefore, again, please direct us to the API specification. Unless it says "you need the same HttpClient" (in which case they're raving mad), it's very likely it can be solved differently (also not that REST calls should by definition be stateless, so if it worked like you say, it would violate REST principles as well).

Thanks Kilian for quick response,

Here is the postman snapshot for ref:

1- Login API :



2- GetData API :



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13 Sep 2018
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2020-09-15 13-07-23
Kilian Hekhuis
 
MVP

That's still not an API description. I meant the documentation for it. If that's not public, there's little I can do to help.

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13 Sep 2018
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2021-04-09 11-42-43
assif_tiger
 
MVP
Solution

Resolved :)

Created an Extension & then I am calling the respective API from this Extension.


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15 May 2019
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