[squid-dev] [RFC] deprecating ICP protocol

[Amos Jeffries]

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On 29/10/2014 12:07 a.m., Eliezer Croitoru wrote:
> On 10/28/2014 10:32 AM, Amos Jeffries wrote:
>> I would like to deprecate ICP protocol from a first-class
>> citizen to a second-class. Swapping it for HTCP as the default
>> peer exchange protocol for Squid-3.6.
> 
>> ICP protocol was designed for use in HTTP/1.0 and works well for 
>> that. However Squid and most servers are now HTTP/1.1 software.
> 
>> ICP is not able to produce accurate results for the increasingly
>>  popular HTTP/1.1 Vary objects. It will also have difficulty with
>>  Store-ID adapted objects where header fields (Vary and others)
>> are used by the Store-ID helper.
> 
>> Amos
> Can we leave the ICP support(since it's very simple compared to
> HTCP) and use HTCP as default instead?

That is the proposal.

> We might add a warning in the parsing that it's not recommended.

I'm not intending to go quite that far yet. ICP is still valid as a
protocol, just not efficient anymore.

Amos
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