Cettia Protocol is a protocol based on web standards ^A to provide reliable full duplex connection ^B and elegant patterns to write real-time applications ^C. Also it provides the test suite to verify your client or server implementation. ^D

A

As component of the specification, RFC and W3C standards are mostly adopted. You don't need to reinvent the wheel.

B

It is designed considering their known issues and best practices of real-time web so that it's possible to write a real-time application running on from modern browsers to old browsers like IE 6 seamlessly.

C

It provides a useful suite of features on the top of transport that making modern web application development fast and enjoyable.

D

You don't need to take trouble to demonstrate your implementation works correctly. Just show test arguments and test results.