// Internal helper to call the right form of the OnClose() method
// asynchronously. It depends on whether the type can support the
// async API's and how the current Communication object is being closed.
private async Task OnCloseAsyncInternal(TimeSpan timeout)
{
// If this type is capable of overriding OnCloseAsync,
// then use it for both async and sync closes
if (SupportsAsyncOpenClose)
{
// The class supports OnCloseAsync(), so use it
await OnCloseAsync(timeout);
}
else
{
// This type is an external type that cannot override OnCloseAsync.
// If this is a synchronous close, invoke the synchronous OnClose)
if (_isSynchronousClose)
{
await TaskHelpers.CallActionAsync(OnClose, timeout);
}
else
{
// The class does not support OnCloseAsync, and this is an asynchronous
// close, so use the Begin/End pattern
await Task.Factory.FromAsync(OnBeginClose, OnEndClose, timeout, TaskCreationOptions.RunContinuationsAsynchronously);
}
}
}
// Internal helper to call the right form of the OnOpen() method
// asynchronously. It depends on whether the type can support the
// async API's and how the current Communication object is being opened.
private async Task OnOpenAsyncInternal(TimeSpan timeout)
{
// If this type is capable of overriding OnOpenAsync,
// then use it for both async and sync opens
if (SupportsAsyncOpenClose)
{
Console.WriteLine("CommunicationObject.OnOpenAsyncInternal.SupportsAsyncOpenClose");
// The class supports OnOpenAsync(), so use it
await OnOpenAsync(timeout);
}
else
{
// This type is an external type that cannot override OnOpenAsync.
// If this is a synchronous open, invoke the synchronous OnOpen)
if (_isSynchronousOpen)
{
Console.WriteLine("CommunicationObject.OnOpenAsyncInternal._isSynchronousOpen");
await TaskHelpers.CallActionAsync <TimeSpan>(OnOpen, timeout);
}
else
{
// The class does not support OnOpenAsync, so use the Begin/End pattern
Console.WriteLine("CommunicationObject.OnOpenAsyncInternal.!_isSynchronousOpen");
await Task.Factory.FromAsync(OnBeginOpen, OnEndOpen, timeout, TaskCreationOptions.RunContinuationsAsynchronously);
}
}
}
// Helper used to close another CommunicationObject "owned" by the current one.
// It is used to propagate the use of either the synchronous or asynchronous methods
internal async Task CloseOtherAsync(ICommunicationObject other, TimeSpan timeout)
{
// If the current object is being closed synchronously, use the synchronous
// close path for the other object.
if (_isSynchronousClose)
{
await TaskHelpers.CallActionAsync(other.Close, timeout);
}
else
{
await Task.Factory.FromAsync(other.BeginClose(timeout, callback: null, state: null), other.EndClose);
}
}
// Helper used to open another CommunicationObject "owned" by the current one.
// It is used to propagate the use of either the synchronous or asynchronous methods
internal async Task OpenOtherAsync(ICommunicationObject other, TimeSpan timeout)
{
// If the current object is being opened synchronously, use the synchronous
// open path for the other object.
if (_isSynchronousOpen)
{
await TaskHelpers.CallActionAsync(other.Open, timeout);
}
else
{
await Task.Factory.FromAsync(other.BeginOpen(timeout, callback: null, state: null), other.EndOpen);
}
}
// Helper used to close another CommunicationObject "owned" by the current one.
// It is used to propagate the use of either the synchronous or asynchronous methods
internal Task CloseOtherAsync(ICommunicationObject other, TimeSpan timeout)
{
// If the current object is being closed synchronously, use the synchronous
// close path for the other object.
if (_isSynchronousClose)
{
return(TaskHelpers.CallActionAsync(other.Close, timeout));
}
else
{
return(Task.Factory.FromAsync(other.BeginClose, other.EndClose, timeout, null));
}
}
// Helper used to open another CommunicationObject "owned" by the current one.
// It is used to propagate the use of either the synchronous or asynchronous methods
internal Task OpenOtherAsync(ICommunicationObject other, TimeSpan timeout)
{
// If the current object is being opened synchronously, use the synchronous
// open path for the other object.
if (_isSynchronousOpen)
{
return(TaskHelpers.CallActionAsync(other.Open, timeout));
}
else
{
return(Task.Factory.FromAsync(other.BeginOpen, other.EndOpen, timeout, null));
}
}
private new async Task OnCloseAsyncInternal(TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
if (_isSynchronousClose)
{
await TaskHelpers.CallActionAsync(base.OnClose, timeoutHelper.RemainingTime());
}
else
{
await Task.Factory.FromAsync(base.OnBeginClose, base.OnEndClose, timeoutHelper.RemainingTime(), TaskCreationOptions.None);
}
await CloseOtherAsync(_innerChannelFactory, timeoutHelper.RemainingTime());
}
