Add simple message to polling timeout error

source/Halibut.Tests/ExceptionContractFixture.cs

@@ -35,7 +35,7 @@ public async Task WhenThePollingRequestQueueTimeoutIsReached_AHalibutClientExcep
             var client = clientOnly.CreateClientWithoutService<IEchoService, IAsyncClientEchoServiceWithOptions>();
 
             (await AssertException.Throws<HalibutClientException>(async () => await client.SayHelloAsync("Hello", new(CancellationToken))))
-                .And.Message.Should().Contain("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:05), so the request timed out.");
+                .And.Message.Should().Contain("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:05), so the request timed out. Please check the tentacle logs to investigate this timeout.");
         }
 
 

source/Halibut.Tests/PollingServiceTimeoutsFixture.cs

@@ -33,7 +33,7 @@ public async Task WhenThePollingRequestQueueTimeoutIsReached_TheRequestShouldTim
                 var stopwatch = Stopwatch.StartNew();
                 var exception = (await AssertException.Throws<HalibutClientException>(async () => await client.SayHelloAsync("Hello", new(CancellationToken)))).And;
 
-                exception.Message.Should().Contain("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:05), so the request timed out.");
+                exception.Message.Should().Contain("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:05), so the request timed out. Please check the tentacle logs to investigate this timeout.");
                 exception.ConnectionState.Should().Be(ConnectionState.Connecting);
 
                 stopwatch.Stop();

source/Halibut.Tests/ServiceModel/PendingRequestQueueFixture.cs

@@ -94,7 +94,7 @@ public async Task QueueAndWait_WhenPollingRequestQueueTimeoutIsReached_WillStopW
             // Although we sleep for 1 second, sometimes it can be just under. So be generous with the buffer.
             stopwatch.Elapsed.Should().BeGreaterThan(TimeSpan.FromMilliseconds(800));
             response.Id.Should().Be(request.Id);
-            response.Error!.Message.Should().Be("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:01), so the request timed out.");
+            response.Error!.Message.Should().Be("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:01), so the request timed out. Please check the tentacle logs to investigate this timeout.");
 
             var next = await sut.DequeueAsync(CancellationToken);
             next.Should().BeNull();
@@ -123,7 +123,7 @@ public async Task QueueAndWait_WithRelyOnConnectionTimeoutsInsteadOfPollingReque
             // Although we sleep for 1 second, sometimes it can be just under. So be generous with the buffer.
             stopwatch.Elapsed.Should().BeGreaterThan(TimeSpan.FromMilliseconds(800));
             response.Id.Should().Be(request.Id);
-            response.Error!.Message.Should().Be("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:01), so the request timed out.");
+            response.Error!.Message.Should().Be("A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time (00:00:01), so the request timed out. Please check the tentacle logs to investigate this timeout.");
 
             var next = await sut.DequeueAsync(CancellationToken);
             next.Should().BeNull();

source/Halibut/ServiceModel/PendingRequestQueueAsync.cs

@@ -291,7 +291,7 @@ public async Task WaitUntilComplete(CancellationToken cancellationToken)
                     log.Write(EventType.MessageExchange, "Request {0} timed out before it could be collected by the polling endpoint", request);
                     SetResponse(ResponseMessage.FromException(
                         request, 
-                        new TimeoutException($"A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time ({request.Destination.PollingRequestQueueTimeout}), so the request timed out."),
+                        new TimeoutException($"A request was sent to a polling endpoint, but the polling endpoint did not collect the request within the allowed time ({request.Destination.PollingRequestQueueTimeout}), so the request timed out. Please check the tentacle logs to investigate this timeout."),
                         ConnectionState.Connecting));
                 }
             }