private object InvokeBeginService(MethodCall methodCall, ProxyOperationRuntime operation)
{
AsyncCallback callback;
object asyncState;
object[] ins = operation.MapAsyncBeginInputs(methodCall, out callback, out asyncState);
object ret = _serviceChannel.BeginCall(operation.Action, operation.IsOneWay, operation, ins, callback, asyncState);
return(ret);
}
private static Task CreateTask(ServiceChannel channel, ProxyOperationRuntime operation, object[] inputParameters)
{
TaskCompletionSource <object> tcs = new TaskCompletionSource <object>();
bool completedCallback = false;
Action <IAsyncResult> endCallDelegate = (asyncResult) =>
{
Contract.Assert(asyncResult != null, "'asyncResult' MUST NOT be NULL.");
completedCallback = true;
OperationContext originalOperationContext = OperationContext.Current;
OperationContext.Current = asyncResult.AsyncState as OperationContext;
try
{
channel.EndCall(operation.Action, Array.Empty <object>(), asyncResult);
tcs.TrySetResult(null);
}
catch (Exception e)
{
tcs.TrySetException(e);
}
finally
{
OperationContext.Current = originalOperationContext;
}
};
try
{
IAsyncResult ar = ServiceChannel.BeginCall(channel, operation, inputParameters, new AsyncCallback(endCallDelegate), OperationContext.Current);
if (ar.CompletedSynchronously && !completedCallback)
{
endCallDelegate(ar);
}
}
catch (Exception e)
{
tcs.TrySetException(e);
}
return(tcs.Task);
}