[wasm][HTTP] TypeError: Failed to fetch

[pavelsavara]

Broken tests in

• System.Net.Http.Functional.Tests.SyncHttpHandler_PostScenarioTest
• System.Net.Http.Functional.Tests.HttpClientHandler_RemoteServerTest

Tests fail with

System.Net.Http.HttpRequestException : TypeError: Failed to fetch   at System.Net.Http.BrowserHttpHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
   at System.Net.Http.Functional.Tests.HttpClientHandler_RemoteServerTest.SendAsync_SendRequestUsingMethodToEchoServerWithNoContent_MethodCorrectlySent(String method, Uri serverUri)

Part of the failures could be caused by lack of CORS support on the remote test server in Azure.

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Issue Details

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When running SyncHttpHandler_PostScenarioTest some of them fail with: System.Net.Http.HttpRequestException : TypeError: Failed to fetch when used with HTTP/2

Author:	pavelsavara
Assignees:	-
Labels:	arch-wasm, area-System.Net.Http
Milestone:	-

[karelz]

@lewing @pavelsavara can you please triage this one? (set milestone + remove Untriaged label) Thanks!