How can I configure setting a Header in httpd.conf based on contenttype?

Hi
I'd like to try and configure the following outcomes in my httpd.conf:
a) for static images, stylesheets, javascript, Cache-Control:max-age
3600 and Expires: + 3600. This I can easily do by using the ExpiresByType
directive for these content types (text/css, application/x-javascript,
image/* etc)
b) for html, I want to set Cache-Control: no-cache, no-store (and probably
Pragma to no-cache or Expires to -1 to prevent HTTP 1.0 from caching). I'd
rather not use max-age=0 because that will download my pages to the user's
browser.
I can't see how to do b) i.e. define a different Header based on the
content-type which seems to be text/html. I've tried enclosing my Header set
command within a directive, but this doesn't
seem to match my HTML.
Has anyone got any ideas please? Do I need to add a Directory of where my
application is? (I'm using a proxy server and my application server is on
another machine, so I don't know how easily I can do this, if needed).
thanks, Baljeet.
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Re: How can I configure setting a Header in httpd.conf

On 10 March 2010 15:03, Baljeet Nijjhar wrote:
>
> Hi
> I'd like to try and configure the following outcomes in my httpd.conf:
> a) for static images, stylesheets, javascript, Cache-Control:max-age
> 3600 and Expires: + 3600. This I can easily do by using the ExpiresByType
> directive for these content types (text/css, application/x-javascript,
> image/* etc)
> b) for html, I want to set Cache-Control: no-cache, no-store (and probably
> Pragma to no-cache or Expires to -1 to prevent HTTP 1.0 from caching). I'd
> rather not use max-age=0 because that will download my pages to the user's
> browser.
> I can't see how to do b) i.e. define a different Header based on the
> content-type which seems to be text/html. I've tried enclosing my Header set
> command within a directive, but this doesn't
> seem to match my HTML.
> Has anyone got any ideas please? Do I need to add a Directory of where my
> application is? (I'm using a proxy server and my application server is on
> another machine, so I don't know how easily I can do this, if needed).

One way might be to use the Header directive to set 'Cache-Control:
no-cache' as the default and then override it for selected file types
that you do want to cache? Something like:-

Header set Cache-Control "no-cache"


Header set Cache-Control "max-age=3600"


-- Phil

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Re: How can I configure setting a Header in httpd.conf

--001636c5bc62130a33048184748f
Content-Type: text/plain; charset=ISO-8859-1

Hi
That works when distinguishing between html and images. However, I suspect
my problem is more subtle. If the page contains an attachment (content-type
= application/msword for example, rather than text/html) I need to set a
different cache-control header. So are FilesMatch and ExpiresByType looking
at the content-type header value and comparing, or something else?
Also, if I were to set my Header selectively in my application code for some
cases, can I set my gloabl type settings in httpd.conf to only set the
Header if it is not already present? That would help ..
thanks, Baljeet.

On Wed, Mar 10, 2010 at 3:33 PM, Philip Wigg wrote:

> On 10 March 2010 15:03, Baljeet Nijjhar wrote:
> >
> > Hi
> > I'd like to try and configure the following outcomes in my httpd.conf:
> > a) for static images, stylesheets, javascript, Cache-Control:max-age
> > 3600 and Expires: + 3600. This I can easily do by using the ExpiresByType
> > directive for these content types (text/css, application/x-javascript,
> > image/* etc)
> > b) for html, I want to set Cache-Control: no-cache, no-store (and
> probably
> > Pragma to no-cache or Expires to -1 to prevent HTTP 1.0 from caching).
> I'd
> > rather not use max-age=0 because that will download my pages to the
> user's
> > browser.
> > I can't see how to do b) i.e. define a different Header based on the
> > content-type which seems to be text/html. I've tried enclosing my Header
> set
> > command within a directive, but this doesn't
> > seem to match my HTML.
> > Has anyone got any ideas please? Do I need to add a Directory of where my
> > application is? (I'm using a proxy server and my application server is on
> > another machine, so I don't know how easily I can do this, if needed).
>
> One way might be to use the Header directive to set 'Cache-Control:
> no-cache' as the default and then override it for selected file types
> that you do want to cache? Something like:-
>
> Header set Cache-Control "no-cache"
>
>
> Header set Cache-Control "max-age=3600"
>
>
> -- Phil
>
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>

--001636c5bc62130a33048184748f
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Re: How can I configure setting a Header in httpd.conf

--001485e8e7392f74050481847bba
Content-Type: text/plain; charset=ISO-8859-1

i.e. if I do ExpiresByType application/msword "access plus 5 seconds" it
doesn't actually work. Nor does




On Thu, Mar 11, 2010 at 11:09 AM, Baljeet Nijjhar <
baljeet.nijjhar@googlemail.com> wrote:

> Hi
> That works when distinguishing between html and images. However, I suspect
> my problem is more subtle. If the page contains an attachment (content-type
> = application/msword for example, rather than text/html) I need to set a
> different cache-control header. So are FilesMatch and ExpiresByType looking
> at the content-type header value and comparing, or something else?
> Also, if I were to set my Header selectively in my application code for
> some cases, can I set my gloabl type settings in httpd.conf to only set the
> Header if it is not already present? That would help ..
> thanks, Baljeet.
>
> On Wed, Mar 10, 2010 at 3:33 PM, Philip Wigg wrote:
>
>> On 10 March 2010 15:03, Baljeet Nijjhar
>> wrote:
>> >
>> > Hi
>> > I'd like to try and configure the following outcomes in my httpd.conf:
>> > a) for static images, stylesheets, javascript, Cache-Control:max-age
>> > 3600 and Expires: + 3600. This I can easily do by using the
>> ExpiresByType
>> > directive for these content types (text/css, application/x-javascript,
>> > image/* etc)
>> > b) for html, I want to set Cache-Control: no-cache, no-store (and
>> probably
>> > Pragma to no-cache or Expires to -1 to prevent HTTP 1.0 from caching).
>> I'd
>> > rather not use max-age=0 because that will download my pages to the
>> user's
>> > browser.
>> > I can't see how to do b) i.e. define a different Header based on the
>> > content-type which seems to be text/html. I've tried enclosing my Header
>> set
>> > command within a directive, but this
>> doesn't
>> > seem to match my HTML.
>> > Has anyone got any ideas please? Do I need to add a Directory of where
>> my
>> > application is? (I'm using a proxy server and my application server is
>> on
>> > another machine, so I don't know how easily I can do this, if needed).
>>
>> One way might be to use the Header directive to set 'Cache-Control:
>> no-cache' as the default and then override it for selected file types
>> that you do want to cache? Something like:-
>>
>> Header set Cache-Control "no-cache"
>>
>>
>> Header set Cache-Control "max-age=3600"
>>
>>
>> -- Phil
>>
>> ------------------------------------------------------------ ---------
>> The official User-To-User support forum of the Apache HTTP Server Project.
>> See for more info.
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> " from the digest: users-digest-unsubscribe@httpd.apache.org
>> For additional commands, e-mail: users-help@httpd.apache.org
>>
>>
>

--001485e8e7392f74050481847bba
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Re: How can I configure setting a Header in httpd.conf

--00c09fc2bdbe27b316048185094e
Content-Type: text/plain; charset=ISO-8859-1

In fact, FilesMatch doesnt seem to work for anything (inlcuding the string
you sent for images etc). I'm using my HTTP server as a proxy server. I
wonder if I need to do something with Directory as well ...
Right now, I'm feeling like the only solution is to set them up in my
application code using a filter. Is this recommended, or must it done at the
proxy server level?

On Thu, Mar 11, 2010 at 11:11 AM, Baljeet Nijjhar <
baljeet.nijjhar@googlemail.com> wrote:

> i.e. if I do ExpiresByType application/msword "access plus 5 seconds" it
> doesn't actually work. Nor does
>
>
>
>
> On Thu, Mar 11, 2010 at 11:09 AM, Baljeet Nijjhar <
> baljeet.nijjhar@googlemail.com> wrote:
>
>> Hi
>> That works when distinguishing between html and images. However, I suspect
>> my problem is more subtle. If the page contains an attachment (content-type
>> = application/msword for example, rather than text/html) I need to set a
>> different cache-control header. So are FilesMatch and ExpiresByType looking
>> at the content-type header value and comparing, or something else?
>> Also, if I were to set my Header selectively in my application code for
>> some cases, can I set my gloabl type settings in httpd.conf to only set the
>> Header if it is not already present? That would help ..
>> thanks, Baljeet.
>>
>> On Wed, Mar 10, 2010 at 3:33 PM, Philip Wigg wrote:
>>
>>> On 10 March 2010 15:03, Baljeet Nijjhar
>>> wrote:
>>> >
>>> > Hi
>>> > I'd like to try and configure the following outcomes in my httpd.conf:
>>> > a) for static images, stylesheets, javascript, Cache-Control:max-age
>>> > 3600 and Expires: + 3600. This I can easily do by using the
>>> ExpiresByType
>>> > directive for these content types (text/css, application/x-javascript,
>>> > image/* etc)
>>> > b) for html, I want to set Cache-Control: no-cache, no-store (and
>>> probably
>>> > Pragma to no-cache or Expires to -1 to prevent HTTP 1.0 from caching).
>>> I'd
>>> > rather not use max-age=0 because that will download my pages to the
>>> user's
>>> > browser.
>>> > I can't see how to do b) i.e. define a different Header based on the
>>> > content-type which seems to be text/html. I've tried enclosing my
>>> Header set
>>> > command within a directive, but this
>>> doesn't
>>> > seem to match my HTML.
>>> > Has anyone got any ideas please? Do I need to add a Directory of where
>>> my
>>> > application is? (I'm using a proxy server and my application server is
>>> on
>>> > another machine, so I don't know how easily I can do this, if needed).
>>>
>>> One way might be to use the Header directive to set 'Cache-Control:
>>> no-cache' as the default and then override it for selected file types
>>> that you do want to cache? Something like:-
>>>
>>> Header set Cache-Control "no-cache"
>>>
>>>
>>> Header set Cache-Control "max-age=3600"
>>>
>>>
>>> -- Phil
>>>
>>> ------------------------------------------------------------ ---------
>>> The official User-To-User support forum of the Apache HTTP Server
>>> Project.
>>> See for more info.
>>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>>> " from the digest: users-digest-unsubscribe@httpd.apache.org
>>> For additional commands, e-mail: users-help@httpd.apache.org
>>>
>>>
>>
>

--00c09fc2bdbe27b316048185094e
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Re: How can I configure setting a Header in httpd.conf

On Thu, Mar 11, 2010 at 11:51 AM, Baljeet Nijjhar
wrote:
> In fact, FilesMatch doesnt seem to work for anything (inlcuding the string
> you sent for images etc). I'm using my HTTP server as a proxy server. I
> wonder if I need to do something with Directory as well ...
> Right now, I'm feeling like the only solution is to set them up in my
> application code using a filter. Is this recommended, or must it done at the
> proxy server level?
>

FilesMatch matches files - real files, existing on disk. If your
handler doesn't refer to files on local disk, eg proxying, then it
will never match a Files or FilesMatch section.

The equivalent solution is to use LocationMatch. See
http://httpd.apache.org/docs/2.2/sections.html#filesystem for details
on the differences between the two,

Cheers

Tom

------------------------------------------------------------ ---------
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Re: How can I configure setting a Header in httpd.conf

--00504502d73689a14c0481854361
Content-Type: text/plain; charset=ISO-8859-1

Ah thanks, that would explain it as yes, it's a proxy.

On Thu, Mar 11, 2010 at 12:03 PM, Tom Evans wrote:

> On Thu, Mar 11, 2010 at 11:51 AM, Baljeet Nijjhar
> wrote:
> > In fact, FilesMatch doesnt seem to work for anything (inlcuding the
> string
> > you sent for images etc). I'm using my HTTP server as a proxy server. I
> > wonder if I need to do something with Directory as well ...
> > Right now, I'm feeling like the only solution is to set them up in my
> > application code using a filter. Is this recommended, or must it done at
> the
> > proxy server level?
> >
>
> FilesMatch matches files - real files, existing on disk. If your
> handler doesn't refer to files on local disk, eg proxying, then it
> will never match a Files or FilesMatch section.
>
> The equivalent solution is to use LocationMatch. See
> http://httpd.apache.org/docs/2.2/sections.html#filesystem for details
> on the differences between the two,
>
> Cheers
>
> Tom
>
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>

--00504502d73689a14c0481854361
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Ah thanks, that would explain it as yes, it's a proxy.

Re: How can I configure setting a Header in httpd.conf

--00504502d73681163a048186d6a0
Content-Type: text/plain; charset=ISO-8859-1

Can I ask, would I have any luck using LocationMatch to distinguish those
requests which were for file attachment downloads, except by adding some
parameter into the URL or having those pages served from a particular named
path that I then search for? I am assuming I could distinguish images,
javascript etc through the URL as the URL would end in .gif, .js etc.

On Thu, Mar 11, 2010 at 12:07 PM, Baljeet Nijjhar <
baljeet.nijjhar@googlemail.com> wrote:

> Ah thanks, that would explain it as yes, it's a proxy.
>
>
> On Thu, Mar 11, 2010 at 12:03 PM, Tom Evans wrote:
>
>> On Thu, Mar 11, 2010 at 11:51 AM, Baljeet Nijjhar
>> wrote:
>> > In fact, FilesMatch doesnt seem to work for anything (inlcuding the
>> string
>> > you sent for images etc). I'm using my HTTP server as a proxy server. I
>> > wonder if I need to do something with Directory as well ...
>> > Right now, I'm feeling like the only solution is to set them up in my
>> > application code using a filter. Is this recommended, or must it done at
>> the
>> > proxy server level?
>> >
>>
>> FilesMatch matches files - real files, existing on disk. If your
>> handler doesn't refer to files on local disk, eg proxying, then it
>> will never match a Files or FilesMatch section.
>>
>> The equivalent solution is to use LocationMatch. See
>> http://httpd.apache.org/docs/2.2/sections.html#filesystem for details
>> on the differences between the two,
>>
>> Cheers
>>
>> Tom
>>
>> ------------------------------------------------------------ ---------
>> The official User-To-User support forum of the Apache HTTP Server Project.
>> See for more info.
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> " from the digest: users-digest-unsubscribe@httpd.apache.org
>> For additional commands, e-mail: users-help@httpd.apache.org
>>
>>
>

--00504502d73681163a048186d6a0
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Can I ask, would I have any luck using LocationMatch to distinguish those r=
equests which were for file attachment downloads, except by adding some par=
ameter into the URL or having those pages served from a particular named pa=
th that I then search for? I am assuming I could distinguish images, javasc=
ript etc through the URL as the URL would end in .gif, .js etc.