476rick 476rick - 10 months ago 90
HTTP Question

Xamarin UWP HttpRequestException when using non-localhost (PCL)

I'm building an application with Xamarin.Forms and a Portable Class Library.
I try to do an API call which returns JSON. I have problems when running the project on Universal Windows Platform.
This is the code that throws an error:

using (HttpClient wc = new HttpClient())
var data = await wc.GetStringAsync("http://something.e1923.companyname.local/content-api/Category/?format=json");

This is the error:

Exception thrown: 'System.Net.Http.HttpRequestException' in mscorlib.ni.dll
at System.Net.Http.HttpClientHandler.d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Somethoing.RESTConnection.d__4.MoveNext()

When I used the same code but an other URL it worked perfect:


The code does work on Android, but not in Universal Windows Platform.
Why is the above code (without localhost) not working on UWP?

I only changed from localhost to an other URL. The only requirement to have access to the non-localhost URL (in my particular case) is that you are connected to the right network (same as where the website is hosted).

Answer Source

Krumeler asked me in the comments if I did add the required capabilities in my UWP app, so I wen't looking.

The one I didn't check was: Private Networks (Client & Server).

This was the one that needed to be checked. It works now, thanks!