When proxying, the Content-Type headers get dropped from the request

[alefranz]

I'm using the Proxy and Capture functionality but when I do a POST with body, the Content-Type header of the request doesn't get passed to the proxyed service

[alefranz]

It looks like there is a specific test for this:

WireMock.Net/test/WireMock.Net.Tests/FluentMockServerTests.Proxy.cs

Line 45 in f358f13

public async Task FluentMockServer_Proxy_Should_preserve_content_header_in_proxied_request()

however I'm on 1.0.4.17 but experiencing the issue

[alefranz]

However that test run only on full framework why I'm experiencing the issue in .NET Core.
Is it a known limitation with .NET Core?

[StefH]

I'll check. Thanks for reporting.

[StefH]

About the unit-tests : for some reason starting a .NET Core instance from WireMock in a unit-test blocks, as where in .NET Framework 4.5.2, it just starts and listens requests.

However testing the WithProxy(...) shows that all works.
https://github.com/WireMock-Net/WireMock.Net/blob/660e97a4ce2c5e811dffe730141328d04013846e/test/WireMock.Net.Tests/ResponseBuilders/ResponseWithProxyTests.cs

Can you maybe provide an example mapping in c# or .json which reproduces your issue?

[StefH]

I just did some testing with example application WireMock.Net.Console.NETCoreApp2, file MainApp.cs

Modified the c# code like this:

server
	.Given(Request.Create()
		.UsingPost()
		.WithHeader("postmanecho", "post")
	)
	.RespondWith(Response.Create()
		.WithProxy(new ProxyAndRecordSettings { Url = "http://postman-echo.com/post" })
	);

server
	.Given(Request.Create()
		.UsingGet()
		.WithHeader("postmanecho", "get")
	)
	.RespondWith(Response.Create()
		.WithProxy(new ProxyAndRecordSettings { Url = "http://postman-echo.com/get" })

When doing a POST to the url http://{{wm_hostname}}/post I get this:

So it seems that the header is correctly passed to the proxy (postman-echo.com)

[alefranz]

Apologies for the delay.
Many thanks for spending time looking into my issue.

You can reproduce my issue with the test app using a custom mediatype like application/vnd.contoso+json

[StefH]

Can you please try version 1.0.4.18-preview-02 from MyGet feed : https://www.myget.org/F/wiremock-net/api/v3/index.json

I did change some code regarding this logic.

[alefranz]

I can't find that specific version, however it works correctly on 1.0.4.18-ci-1343
Thank you!

[StefH]

OK Thanks for testing.