On 11/08/2020 18:06, Michael Osipov wrote:
> Am 2020-08-11 um 18:53 schrieb Mark Thomas:
>> On 11/08/2020 17:29, Michael Osipov wrote:
>>> Am 2020-08-11 um 16:52 schrieb ma...@apache.org:
>>
>> <snip/>
>>
>>>> commit bef507e1b7ac2eb0ff012d0d40035e218a5839cc
>>>> Author: Mark Thomas <ma...@apache.org>
>>>> AuthorDate: Tue Aug 11 15:27:45 2020 +0100
>>>>
>>>>       Improve entity tag handling

<snip/>

>>> Even an option for this is wrong. I agree that we cannto produce strong
>>> ETags by default, but it is now better decoupled and a subclass can
>>> handle this. Please retain the semantics as described in RFC 7232.
>>
>> It isn't possible to retain the semantics of RFC 7232 because Tomcat
>> prior to this commit did not implement them.
>>
>> If you look at the code prior to this commit, any "W/" was stripped from
>> the resource ETag and the ETag values in the If-Match header before
>> comparison. The result of doing that is that the comparison is
>> effectively a weak one rather than a strong one.
>>
>> The option is required to preserve backwards compatibility.
> 
> Granted. This ultimately means that Tomcat 10 should remove this cruft
> and be RFC-compliant. For previous versions a comment about behavioral
> change/deprecation should be added too.
> 
> Can we agree on this?

Maybe.

I'd lean towards changing the default in Tomcat 10 to the RFC 7232
compliant behaviour with a view to removing the option in Tomcat 11 if
the change in default doesn't trigger a bunch of user questions / bug
reports etc.

If the consensus is to remove the option immediately in Tomcat 10 I can
live with that but my preference would be to change the default in 10
and remove in 11.

What do others think?

Mark


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