[squid-users] Error from icap during respmod

[Alex Rousskov]

On 2024-05-06 19:39, Arun Kumar wrote:
> Are you aware of any compatible 
> Python or Java based iCAP server implemenation?

I am not aware of any Python- or Java-based ICAP service that I can 
recommend. AFAIK, most folks looking for a free ICAP service (that 
resist the temptation to reinvent a rather complex wheel) use c-icap, 
but c-icap is written in C: https://c-icap.sourceforge.net/

Please note that if my triage is correct, then the issue here is not 
"compatibility" with Squid. It is a serious ICAP service bug or 
misconfiguration.


Good luck,

Alex.


> We want to implement 
> custom virus scanning of the response.
> I got the book /Squid: The Definitive Guide /and going over for more 
> understanding. Saw your name mentioned by the author. I am very proud to 
> work with great people like you.
> 
> 
> On Thursday, May 2, 2024 at 04:18:45 PM EDT, Alex Rousskov 
> <rousskov at measurement-factory.com> wrote:
> 
> 
> On 2024-04-29 13:06, Arun Kumar wrote:
>  > Configured python based icap server (pyicap) and getting 500 Internal
>  > Server error during respmod.
> 
> AFAICT, this ICAP RESPMOD service is buggy: It sends what looks like an
> HTTP response body chunk after sending an ICAP 100 Continue control
> message. Instead, it is supposed to send the final ICAP response headers
> and HTTP response headers _before_ sending that HTTP response body chunk.
> 
> 
>      00:50:54.989 ... ReadNow: conn33 ... size 65535, retval 25
>      ICAP/1.0 100 Continue
> 
> 
>      00:50:54.991 ReadNow: conn33 ... size 65535, retval 137
>      83
>      {"activity":...}
> 
> 
> HTH,
> 
> Alex.
> 
> 
>  > 
> https://drive.google.com/file/d/19yirXfxKli7NXon4ewiy-v3GpLvECT1i/view?usp=sharing <https://drive.google.com/file/d/19yirXfxKli7NXon4ewiy-v3GpLvECT1i/view?usp=sharing> <https://drive.google.com/file/d/19yirXfxKli7NXon4ewiy-v3GpLvECT1i/view?usp=sharing <https://drive.google.com/file/d/19yirXfxKli7NXon4ewiy-v3GpLvECT1i/view?usp=sharing>>
>  >
>  > Squid configuration:
>  > icap_enable on
>  > icap_send_client_ip on
>  > icap_send_client_username on
>  > icap_client_username_encode off
>  > icap_client_username_header X-Authenticated-User
>  > icap_preview_enable on
>  > icap_preview_size 1024
>  >
>  > icap_service service_req reqmod_precache bypass=0
>  > icap://127.0.0.1:13440/example
>  > icap_service service_resp respmod_precache bypass=0
>  > icap://127.0.0.1:13441/example
> 
>  >
>  >
>  >
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