public void RequestTimeout(ref IOUSBDevRequestTO request)
{
ThrowIfDisposed();
var result = Interface.DeviceRequestTO(InterfaceRef, ref request);
IOObject.ThrowIfError(result);
}
public Task <int> RequestTimeoutAsync(IOUSBDevRequestTO request)
{
ThrowIfDisposed();
var completionSource = new TaskCompletionSource <int> ();
GCHandle callbackHandle = new GCHandle();
IOAsyncCallback1 callback = (refCon, callbackResult, arg0) => {
callbackHandle.Free();
if (callbackResult == IOReturn.Success)
{
completionSource.TrySetResult((int)arg0);
}
else
{
completionSource.TrySetException(callbackResult.ToNSErrorException());
}
};
callbackHandle = GCHandle.Alloc(callback, GCHandleType.Pinned);
var result = Interface.DeviceRequestAsyncTO(InterfaceRef, request, callback, IntPtr.Zero);
IOObject.ThrowIfError(result);
return(completionSource.Task);
}