Bug 50788 - Overriding AndroidHttpClientHandlerType does not work in csproj
Summary: Overriding AndroidHttpClientHandlerType does not work in csproj
Alias: None
Product: Android
Classification: Xamarin
Component: MSBuild ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: dean.ellis
Depends on:
Reported: 2016-12-25 12:45 UTC by Akash Kava
Modified: 2017-08-23 21:16 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Akash Kava 2016-12-25 12:45:29 UTC
I had plans to use ModernHttpClient which uses OKHttp. However, it turns out that default HttpClient still continue to use AndroidHttpClient.

I have an project, "MyProject.Droid" , and I open .csproj file in text editor and added following line.

<AndroidHttpClientHandlerType>MyProject.Droid.Services.ProxyHandler, MyProject.Droid</AndroidHttpClientHandlerType>

namespace MyProject.Droid.Services{

    public class ProxyHandler : NativeMessageHandler {
        public ProxyHandler()


        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, 
            CancellationToken cancellationToken)
            System.Diagnostics.Debug.WriteLine($"Proxy Request: {request.RequestUri}");
            return base.SendAsync(request, cancellationToken);

Ideally, I should see every request logged in debugger, but I don't see any.
Comment 1 Akash Kava 2016-12-25 12:58:05 UTC
I also created Environment.txt file, changed it's build type to AndroidEnvironment and added following line, still I don't see anything in debugger. 

XA_HTTP_CLIENT_HANDLER_TYPE=MyProject.Droid.Services.ProxyHandler, MyProject.Droid
Comment 2 Akash Kava 2016-12-25 13:03:36 UTC
 var v  = System.Environment.GetEnvironmentVariable("XA_HTTP_CLIENT_HANDLER_TYPE");
            System.Diagnostics.Debug.WriteLine($"XA_HTTP_CLIENT_HANDLER_TYPE = {v}");

In Debugger, I do see correct, 
MyProject.Droid.Services.ProxyHandler, MyProject.Droid
Comment 3 Prashant [MSFT] 2017-07-05 06:07:14 UTC
Thank you for taking the time to submit the bug. We are unable to reproduce this issue. Please attach a reproduction to the bug by starting with a clean Xamarin.Android project and adding just the code necessary to demonstrate the issue
Comment 4 Cody Beyer (MSFT) 2017-08-23 21:16:57 UTC
Because we have not received a reply to our request for more information we are closing this issue. If you are still encountering this issue, please reopen the ticket with the requested information. Thanks!