AggregateException is throwing while waiting for PostAsJsonAsync

Question

AggregateException is throwing while waiting for API post to complete how i could fix this? My API call is similar like this ``` using (var httpClient = new HttpClient()) { httpClient.BaseAddress = new Uri(workflowUrl); var task = httpClient.PostAsJsonAsync("api/apiname/execute/", executeModel) .ContinueWith(x => x.Result.Content.ReadAsAsync<bool>().Result); Task continuation = task.ContinueWith(x => { bool response = x.Result; }); continuation.Wait(); } ``` I am getting Exception given below while waitng for POST to complete. ``` System.AggregateException was caught Message=One or more errors occurred. Source=mscorlib StackTrace: at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) at System.Threading.Tasks.Task.Wait() at InnerException: System.AggregateException Message=One or more errors occurred. Source=mscorlib StackTrace: at System.Threading.Tas…

Accepted Answer

Are you posting a big piece of data ? Once I had a similar issue. I believe the underlying problem is occasional timeout due to bandwidth issues. I tried getting the task and manually waiting on it then checking `.IsFaulted` and `.IsCancelled` but the `.Result` throws `AggregateException` / `TaskCancelledException`.

Maybe you should try to increase HttpClient.Timeout property which is 100 sec by default ?

AggregateException is throwing while waiting for PostAsJsonAsync

Solution

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