> I used the source as documentation https://github. > com/apache/trafficserver/blob/master/cmd/traffic_via/traffic_via.cc
https://docs.trafficserver.apache.org/en/7.1.x/ > appendices/faq.en.html#how-do-i-interpret-the-via-header-code Thanks to both of you! Ben On 14 December 2017 at 17:35, Miles Libbey <[email protected]> wrote: > On Wed, Dec 13, 2017 at 9:33 AM, Benjamin Morel > <[email protected]> wrote: > > Thank you all for your replies. TBH I expected it to be much simpler! > > > > That being said, proxy.config.http.insert_request_via_str, and parsing > the > > resulting Via header, looks like the way to go. > > > > Apart from the obscure decoder, is there a documentation for the format > of > > the Via transaction codes? > > https://docs.trafficserver.apache.org/en/7.1.x/ > appendices/faq.en.html#how-do-i-interpret-the-via-header-code > > > With a listing of all possible statuses (cR = fresh Ram hit, cH = fresh > hit, > > ...) > > > > I couldn't find this in the doc. > > > > Thanks in advance, > > Ben > > > > On 13 December 2017 at 10:43, Veiko Kukk <[email protected]> wrote: > >> > >> If you also need MISS (our setup does not, we know amount of requests > and > >> amount of HIT's), you need to add another condition with set-header > X-Cache > >> "MISS" > >> > >> -- > >> Veiko > >> > >> > >> 2017-12-12 14:10 GMT+02:00 Veiko Kukk <[email protected]>: > >>> > >>> Hi, > >>> > >>> I recently had exact same task: to include cache status in response > >>> headers. That's what I did: > >>> > >>> * proxy.config.http.insert_response_via_str 2 > >>> * Using header_rewrite plugin to create additional header with > following > >>> config: > >>> cond %{SEND_RESPONSE_HDR_HOOK} [AND] > >>> cond %{HEADER:Via} /(\[cH|\[cR)/ > >>> set-header X-Cache "HIT" > >>> > >>> Veiko > >>> > >>> > >>> 2017-12-12 2:29 GMT+02:00 Igor Cicimov <[email protected] > >: > >>>> > >>>> You can use the Via header: > >>>> > >>>> > >>>> ############################################################ > ################## > >>>> # Via: headers. Docs: > >>>> # > >>>> https://docs.trafficserver.apache.org/records.config# > proxy-config-http-insert-response-via-str > >>>> > >>>> ############################################################ > ################## > >>>> CONFIG proxy.config.http.insert_request_via_str INT 1 > >>>> CONFIG proxy.config.http.insert_response_via_str INT 3 > >>>> CONFIG proxy.config.http.response_via_str STRING ATS > >>>> > >>>> that will insert values like below that you can decode: > >>>> > >>>> # traffic_via '[cHs f ]' > >>>> Via header is [cHs f ], Length is 8 > >>>> Via Header Details: > >>>> Result of Traffic Server cache lookup for URL :in cache, > fresh > >>>> (a cache "HIT") > >>>> Response information received from origin server :no server > >>>> connection needed > >>>> Result of document write-to-cache: :no cache write > >>>> performed > >>>> > >>>> for detailed stats (insert_response_via_str INT 3): > >>>> > >>>> # traffic_via 'uScHs f p eN:t cCHi p s ' > >>>> Via header is uScHs f p eN:t cCHi p s , Length is 24 > >>>> Via Header Details: > >>>> Request headers received from client :simple request > >>>> (not conditional) > >>>> Result of Traffic Server cache lookup for URL :in cache, > fresh > >>>> (a cache "HIT") > >>>> Response information received from origin server :no server > >>>> connection needed > >>>> Result of document write-to-cache: :no cache write > >>>> performed > >>>> Proxy operation result :unknown > >>>> Error codes (if any) :no error > >>>> Tunnel info :no tunneling > >>>> Cache Type :cache > >>>> Cache Lookup Result :cache hit > >>>> ICP status :no icp > >>>> Parent proxy connection status :no parent > proxy > >>>> or unknown > >>>> Origin server connection status :no server > >>>> connection needed > >>>> > >>>> but you might be already familiar with it and not exactly what you > need. > >>>> > >>>> > >>>> On Tue, Dec 12, 2017 at 11:11 AM, Miles Libbey <[email protected]> > >>>> wrote: > >>>>> > >>>>> Perhaps use the X-Debug header: > >>>>> > >>>>> https://docs.trafficserver.apache.org/en/7.1.x/admin- > guide/plugins/xdebug.en.html > >>>>> and maybe a global header_rewrite rule to add the magic header to > make > >>>>> the debug part appear? > >>>>> > >>>>> On Mon, Dec 11, 2017 at 8:57 AM, Benjamin Morel > >>>>> <[email protected]> wrote: > >>>>> > Sorry if this has been asked before, but I couldn't find it in the > >>>>> > docs. > >>>>> > > >>>>> > I'm using ATS as a forward proxy. Is there a way to add a response > >>>>> > header to > >>>>> > tell me if the request was a HIT or a MISS? > >>>>> > > >>>>> > Something like: X-Cache: HIT > >>>>> > > >>>>> > Thanks in advance, > >>>>> > Benjamin > >>>> > >>>> > >>>> > >>> > >> > > >
