HttpClient's WebRequestHandler hanging with partial response

Question

I'm trying to use WebRequestHandler with HttpClient in an ASP.NET MVC controller with .NET 4.0. I've got the latest HttpClient installed from NuGet.

When passing a WebRequestHandler to HttpClient, requests never complete. Looking via a debugging proxy, responses from the server just get cut off at some point through the response body. Doesn't seem to be a pattern as to where it cuts off.

Here's a test case:

public class HomeController : Controller
{
    public async Task<ActionResult> Index()
    {
        var handler = new WebRequestHandler();
        var httpClient = new HttpClient(handler);
        var google = await httpClient.GetStringAsync("http://www.google.com");
        return View(google);
    }
}

It works fine if I replace WebRequestHandler with HttpClientHandler, but I need to add a client certificate.

I've tried changing various settings of WebRequestHandler, but to no avail. Any ideas?

Tom Gilder Tom Gilder · Accepted Answer · 2013-07-17T14:23:41

Well, this just seems to be a bug and regression in HttpClient.

I went back to v2.0.20710.0 and it works fine.

HttpClient's WebRequestHandler hanging with partial response

1 Answers