void CancelOrder(IReader <IMessageIn> reader, IWriter <IMessageOut> writer, Product product, long orderId)
{
var req = new CancelOrderRequest()
{
Product = product, OrderId = orderId
};
writer.Send(req);
var deadline = DateTime.UtcNow + CancelTimeout;
while (true)
{
TimestampedMsg <IMessageIn> resp;
if (!reader.PeekWithTimeout(DateTime.UtcNow - deadline, out resp))
{
throw new Exception("Timed out waiting for response to our order cancellation request");
}
var reply = resp.Value as CancelOrderResponse;
if (reply != null)
{
if (reply.Error.HasValue &&
reply.Error.Value != ErrorCode.OrderDoesNotExist1 &&
reply.Error.Value != ErrorCode.OrderDoesNotExist2)
{
throw new Exception(String.Format("Unable to cancel order {0}: {1}", orderId, reply));
}
// We need to consume the response so that it doesn't confuse Gateway.
reader.Consume();
break;
}
reader.Skip();
}
}
// See Send() above.
public void Send(CancelOrderRequest req, Action <TimestampedMsg <CancelOrderResponse> > done)
{
_gateway.Send(req, CastCallback(done));
}