public IAsyncResult BeginSend(ServiceRequest request, ExecutionContext context,
AsyncCallback callback, object state)
{
var asyncResult = new RetryableAsyncResult(callback, state, request, context);
BeginSendImpl(request, context, asyncResult);
return(asyncResult);
}
private void BeginSendImpl(ServiceRequest request, ExecutionContext context,
RetryableAsyncResult asyncResult)
{
if (asyncResult.InnerAsyncResult != null)
{
asyncResult.InnerAsyncResult.Dispose();
}
asyncResult.InnerAsyncResult =
_innerClient.BeginSend(request, context, asyncResult.Callback, asyncResult) as AsyncResult;
}
public ServiceResponse EndSend(IAsyncResult ar)
{
if (ar == null)
{
throw new ArgumentNullException("ar");
}
var asyncResult = ar as AsyncResult <ServiceResponse>;
RetryableAsyncResult retryableAsyncResult = ar.AsyncState as RetryableAsyncResult;
if (asyncResult == null || retryableAsyncResult == null)
{
throw new InvalidOperationException("Invalid asynchronous invocation status.");
}
try
{
var response = asyncResult.GetResult();
return(response);
}
catch (Exception ex)
{
if (retryableAsyncResult.OriginalContentPosition >= 0)
{
retryableAsyncResult.Request.Content.Seek(retryableAsyncResult.OriginalContentPosition,
SeekOrigin.Begin);
}
if (ShouldRetry(retryableAsyncResult.Request, ex, retryableAsyncResult.Retries))
{
Pause(retryableAsyncResult.Retries++);
BeginSendImpl(retryableAsyncResult.Request, retryableAsyncResult.Context, retryableAsyncResult);
}
// Rethrow
throw;
}
finally
{
asyncResult.Dispose();
}
}