Getting the following exception with the latest stable version of Xamarin.iOS:
System.ArgumentNullException: null handle
Parameter name: waitHandles
at System.Threading.WaitHandle.CheckArray (System.Threading.WaitHandle[]
handles, Boolean waitAll) [0x0005a] in
/Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Threading/WaitHandle.cs:78
at System.Threading.WaitHandle.WaitAny (System.Threading.WaitHandle[]
waitHandles, TimeSpan timeout, Boolean exitContext) [0x00000] in
/Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Threading/WaitHandle.cs:209
at System.Threading.RegisteredWaitHandle.Wait (System.Object state)
[0x00019] in
/Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Threading/RegisteredWaitHandle.cs:71
when executing the following code:
ThreadPool.RegisterWaitForSingleObject((asyncTask as
IAsyncResult).AsyncWaitHandle,
new
WaitOrTimerCallback((state, timedOut) => {
try
{
Console.WriteLine("Timeout: " + timedOut);
if (timedOut)
{
Console.WriteLine("Timeout");
WebRequest request = (WebRequest)state;
if (state != null)
{
request.Abort();
}
}
requestClass.request.Time = DateTime.Now -
requestClass.request.StartTime;
requestClass.requestCallback(HttpRequestResult.TimedOut);
}
finally
{
Interlocked.Decrement(ref currentNumSimultaneousRequests);
}
}),
requestClass.webRequest, requestClass.request.TimeoutMilisecs,
true);
asyncTask.ContinueWith(task =>
{
try
{
requestClass.webResponse = (HttpWebResponse)task.Result;
requestClass.request.Time = DateTime.Now -
requestClass.request.StartTime;
dctRequestsInProgress.Remove(requestClass.request.Signature);
#if !DISTRIBUTION
Console.WriteLine("Made request : " + requestClass.request.Url + "
: Time = " + requestClass.request.Time.TotalSeconds.ToString() + " secs");
#endif
byte[] response = null;
HttpRequestResult result = HttpRequestResult.Success;
if (requestClass.webResponse != null)
{
requestClass.statusCode = requestClass.webResponse.StatusCode;
}
requestClass.requestCallback(result);
}
finally
{
Interlocked.Decrement(ref currentNumSimultaneousRequests);
}
},
TaskContinuationOptions.NotOnFaulted);
Any ideas what's going on? This code used to work as far as I remember.
Dennis
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