Hi I'm trying to implement an encryption layer for UDP (due to the lack of a DTLS implementation for java right now), and my first attempt was to put it into a filter like SslFilter. It works, but the implementation is ugly as I need to keep track of specific NextFilter instances so that handshake messages dont end up going through the regular filter chain. Would this be better implemented as something other than a filter?
Currently, my filter chains look something like this: 1. DALS ProtocolCodecFilter (encodes/decodes handshake and encrypted messages) 2. DALS Filter (provides encryption/decryption/reliable handshake) 3. user's ProtocolCodecFilter (this would be the end-user's codec, so I have no control of what it is) 4. any other filters the end user see's fit to add The DALS Filter needs to keep a reference to the DALS ProtocolCodecFilter so that it can write handshake messages without exceptions being thrown by the user's ProtocolCodecFilter because it is unable to encode the handshake messages. Since I am manipulating the filter chain it seems like maybe this functionality should be pulled out of the chain and put somewhere else, but I'm not sure where. Any ideas?
