On 03/20/2014 10:37 AM, xan wrote: > Now I'm looking for a tutorial about ICAP and eCAP. Is there any good point > to start? Thanks all for the answers. For eCAP, the best place to start, IMO, are sample adapters at http://www.e-cap.org/ plus answers to various developer questions at https://answers.launchpad.net/ecap For ICAP, you need an ICAP server. You should not try to write one IMO. There are several servers available, including a free c-icap server. ICAP adapter documentation is specific to the ICAP server you pick. The following Squid FAQ may be useful for both eCAP and ICAP cases: http://wiki.squid-cache.org/SquidFaq/ContentAdaptation In either case, you are unlikely to find comprehensive, high-quality documentation that will tell you exactly what you need to know and guide you all the way through. Good luck, Alex.