Exception thrown using HttpClient with handler

[jskeet]

I have an HttpClient which is meant to propagate trace information:

var handler = TraceHeaderPropagatingHandler.Create(tracer);
httpClient = new HttpClient(handler);

Unfortunately when I call GetStringAsync I get an exception:

System.InvalidOperationException occurred
  HResult=-2146233079
  Message=The inner handler has not been assigned.
  Source=System.Net.Http
  StackTrace:
       at System.Net.Http.DelegatingHandler.SetOperationStarted()
       at System.Net.Http.DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
       at Google.Cloud.Diagnostics.Common.TraceHeaderPropagatingHandler.<SendAsync>d__3.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.Net.Http.HttpClient.<FinishSendAsync>d__58.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.Net.Http.HttpClient.<GetContentAsync>d__32`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 Google.NextTalk.Web.Backends.JsonBackend.<GetLanguagesAsync>d__6.MoveNext() in

[jskeet]

Hmm... the same code in an integration test is fine. I'm very confused at this point.

[jskeet]

Aha - it was fixed in 7e0191e.
New release should sort it :)