Thanks Alex. You're right. Using ci_icap_add_xheader(req, "X-Next-Services: "); instead solved the problem. Regards, Giray ---------------------------------------- > Subject: Re: Question about c-icap and setting X-Next-Services header to empty string > To: squid-users@xxxxxxxxxxxxxxxxxxxxx > From: rousskov@xxxxxxxxxxxxxxxxxxxxxxx > CC: giray_simsek@xxxxxxxxxxx > Date: Tue, 1 Dec 2015 09:18:07 -0700 > > On 12/01/2015 08:58 AM, Giray Simsek wrote: > >> I am trying to update the adaptation plan dynamically in the first >> service (service_a_resp) Basically, if a certain condition is met, >> then I don't want the second service (service_b_resp) to be called by >> Squid. > > >> icap_enable on >> icap_send_client_ip on >> icap_send_client_username on >> icap_client_username_header X-Client-Username >> >> icap_service service_a_resp respmod_precache bypass=on routing=on icap://127.0.0.1:1344/virus_scan >> icap_service service_b_resp respmod_precache bypass=on routing=on icap://127.0.0.1:1344/content_filter > > This is probably not important, but only the first service needs > routing=on. Your other ICAP service does not route requests. > > >> adaptation_service_chain response_chain service_a_resp service_b_resp >> adaptation_access response_chain allow all > > OK. > > >> After reading the documentation about the icap_service option and its >> routing parameter, I got the impression that I can achieve this by >> setting X-Next-Services header to empty string in my first service >> (service_a_resp) in the adaptation chain > > That sounds correct although you are omitting a critical detail: > X-Next-Services is an ICAP response header, not an HTTP header. > Naturally, ICAP routing does not modify the HTTP message being routed. > > >> as below: >> ci_headers_add(req->response_header, "X-Next-Services: "); > > Googling suggests that the above c-icap method is for adding HTTP > headers. You need to add an ICAP response header instead. I do not know > c-icap API, so I cannot recommend a specific method. If you do not know > how to do that either, consider asking on c-icap support forums. > > > HTH, > > Alex. > _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users