There are a few features we are looking to remove in the ATS 7.0.0 release. If you are using these features and require them, please respond to this email. We also need to have people that are willing to invest time and fix some of the bugs for these features. Your feedback is very important!
ICP (Internet Cache Protocol) is currently not working in ATS. ICP is an Informational RFC (https://tools.ietf.org/html/rfc2187) that has some known flaws since it doesn’t share header information to the peer. It would be preferable to have HTCP (Hyper Text Caching Protocol https://tools.ietf.org/html/rfc2756) support instead. The proposal is to disable the configuration options for ICP for now, so it can’t be enabled. It might be helpful to keep the code in ATS for someone that would like to convert it into HTCP. Thank you, -Bryan
