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Re: youtube video, caching, disabling QUIC

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On 1/01/2016 2:45 a.m., Massimo.Sala@xxxxxxxxxxxxxx wrote:
> When you request a video on Youtube, its web servers send two new HTTP 
> headers to the browser :
> 
>         alt-svc
>         alternate-protocol
> 
> suggesting to the browser to switch to the new protocol QUIC.
> 
> 
> Unfortunately
> 
> 1) QUIC, working over UDP, is not cacheable by squid 3.4
> 
> 2) even if cacheable, IT admins have to upgrade many tools to support and 
> account videos over QUIC ( proxy, firewall, bandwidth shaping, etc... )
> 
> See :
>         http://wiki.squid-cache.org/KnowledgeBase/Block%20QUIC%20protocol
> 
> 
> We want to disable QUIC, so the servers and browsers fallbacks to normal 
> HTTP for videos.
> 
> ---
> 
> I asked in another thread
> 
>         3) support for Alternate-Protocol HTTP header.
> 
> 
> Amos' answer :

(was plain wrong. Sorry)

> 
> From 
> http://www.squid-cache.org/Versions/v3/3.4/cfgman/reply_header_access.html
>         Usage: reply_header_access header_name allow|deny [!]aclname ...
> 

Oops. You are right. I should have said:

  reply_header_access Alternate-Protocol deny all

Just that.

> 
> Which is the correct syntax to suppress in the replies these headers ?
>         alt-svc
>         alternate-protocol
> 

Same for both. Just different header-name.


Amos

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