[ http://issues.apache.org/jira/browse/MODPYTHON-142?page=all ]

Graham Dumpleton updated MODPYTHON-142:
---------------------------------------

    Description: 
If a handler sets req.no_cache to be true, then Apache will internally add 
appropriate "Expires" header. Also the  req.no_cache attribute is consulted by 
mod_cache to know when not to cache. The alternative is that a handler must 
know to set both:

  req.headers_out['Cache-Control'] = 'no-cache'
  req.headers_out['Expires'] = '-1'

It would be better to allow handlers to set req.no_cache as it isolates them 
from any future changes in respect of special headers that may need to be 
additionally set if standards change in any way.

Not entirely sure if req.no_local_copy attribute is somehow related. It somehow 
affects whether 304 errors are returned in some cases. Certain modules such as 
mod_include set this, so no reason that a mod_python handler wouldn't want to 
set it also.

  was:
If a handler sets req.no_cache to be true, then Apache will internally add 
appropriate "Expires" header. Also the  req.no_cache attribute is consulted by 
mod_cache to know when not to cache. The alternative is that a handler must 
know to set both:

  req.headers_out['Cache-Control'] = 'no-cache'
  req.headers_out['Expires'] = '-1'

It would be better to allow handlers to set req.no_cache as it isolates them 
from any future changes in respect of special headers that may need to be 
additionally set if standards change in any way.

Not entirely sure if req.no_local_copy attribute is somehow related. It somehow 
affects whether 302 errors are returned in some cases. Certain modules such as 
mod_include set this, so no reason that a mod_python handler wouldn't want to 
set it also.


> Make req.no_cache and req.no_local_copy writable.
> -------------------------------------------------
>
>          Key: MODPYTHON-142
>          URL: http://issues.apache.org/jira/browse/MODPYTHON-142
>      Project: mod_python
>         Type: Improvement
>   Components: core
>     Versions: 3.2.8
>     Reporter: Graham Dumpleton
>     Assignee: Graham Dumpleton
>      Fix For: 3.3

>
> If a handler sets req.no_cache to be true, then Apache will internally add 
> appropriate "Expires" header. Also the  req.no_cache attribute is consulted 
> by mod_cache to know when not to cache. The alternative is that a handler 
> must know to set both:
>   req.headers_out['Cache-Control'] = 'no-cache'
>   req.headers_out['Expires'] = '-1'
> It would be better to allow handlers to set req.no_cache as it isolates them 
> from any future changes in respect of special headers that may need to be 
> additionally set if standards change in any way.
> Not entirely sure if req.no_local_copy attribute is somehow related. It 
> somehow affects whether 304 errors are returned in some cases. Certain 
> modules such as mod_include set this, so no reason that a mod_python handler 
> wouldn't want to set it also.

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