Information Security Stack Exchange is a question and answer site for information security professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

My understanding is that COMET implementations of WebSync and SignalR do not directly use IIS and are a few layers lower on the ISO model.

After reading Qualys's blog regarding slow TCP reading, I was wondering if this had any effect on COMET implementations since some are already using "long polling", websockets, or perhaps some other technique?

Are COMET (or reverse AJAX) installations not vulnerable to this class of attack by design?

share|improve this question

WebSync runs directly on top of the IIS/.NET stack, and so it relies on the Windows/IIS kernel to process TCP/HTTP for both long-polling and WebSocket transports. I believe SignalR does this as well.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.