Improved http timeout handling

Co-authored-by: Qstick <qstick@gmail.com>

src/NzbDrone.Common.Test/Http/HttpClientFixture.cs

@@ -131,6 +131,18 @@ namespace NzbDrone.Common.Test.Http
             response.Content.Should().NotBeNullOrWhiteSpace();
         }
 
+        [Test]
+        public void should_throw_timeout_request()
+        {
+            var request = new HttpRequest($"https://{_httpBinHost}/delay/10");
+
+            request.RequestTimeout = new TimeSpan(0, 0, 5);
+
+            Assert.ThrowsAsync<WebException>(async () => await Subject.ExecuteAsync(request));
+
+            ExceptionVerification.ExpectedErrors(0);
+        }
+
         [Test]
         public async Task should_execute_https_get()
         {

src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs

@@ -102,6 +102,8 @@ namespace NzbDrone.Common.Http.Dispatchers
 
             var httpClient = GetClient(request.Url);
 
+            try
+            {
                 using var responseMessage = await httpClient.SendAsync(requestMessage, HttpCompletionOption.ResponseHeadersRead, cts.Token);
                 {
                     byte[] data = null;
@@ -129,6 +131,11 @@ namespace NzbDrone.Common.Http.Dispatchers
                     return new HttpResponse(request, new HttpHeader(headers), data, responseMessage.StatusCode, responseMessage.Version);
                 }
             }
+            catch (OperationCanceledException ex) when (cts.IsCancellationRequested)
+            {
+                throw new WebException("Http request timed out", ex.InnerException, WebExceptionStatus.Timeout, null);
+            }
+        }
 
         protected virtual System.Net.Http.HttpClient GetClient(HttpUri uri)
         {