mod_rewrite & headers

If I use mod_rewrite to rewrite a requested url will it preserve the
headers of the requesting file?

e.g.

request www.mysite.com/audio/file1.mp3 - setting range offset within
header (range: bytes=1025700-)
rewrites to www.mysite.com/audio/process.php?p=file1.mp3

Ideally I want the process.php file to pickup the requesting file and
serve it up as partial content, which is why I need to get the
original header.

Is this possible using mod_rewrite?

Many thanks

Dave

On Thu, 15 Feb 2007 14:39:31 +0100, Dave <spambox.dccobb@gmail.com> wrote:

> If I use mod_rewrite to rewrite a requested url will it preserve the
> headers of the requesting file?
>
> e.g.
>
> request www.mysite.com/audio/file1.mp3 - setting range offset within
> header (range: bytes=1025700-)
> rewrites to www.mysite.com/audio/process.php?p=file1.mp3

Headers & post values will be preserved on internal redirects, get
variables can be easily overwritten by accident if one's not carefull.
--
Rik Wasmus

> Headers & post values will be preserved on internal redirects, get
> variables can be easily overwritten by accident if one's not carefull.
> --
> Rik Wasmus

Rik,

Sorry, I'm not sure what you mean by your last statement.

Cheers

Dave

On Thu, 15 Feb 2007 15:12:12 +0100, Dave <spambox.dccobb@gmail.com> wrote:

>
>> Headers & post values will be preserved on internal redirects, get
>> variables can be easily overwritten by accident if one's not carefull..
>
> Sorry, I'm not sure what you mean by your last statement.
>

The part about the GET variables?
Most rewriting is done to get variables, for instance:
http://example.com/foo/bar
Is rewritten internally to:
http://example.com/index.php?foz=foo&baz=bar

That's a piece of cake, and usally works. Now what if we're trying this
URL:
http://example.com/foo/bar?foz=var

It's highly dependant on the actual rewrite and/or the receiving script
wether this script thinks the GET variable foz is 'var', 'foo', or maybe
both.

While POST & HEADER values can be altered, this most be done very
explicitly, so it's very hard to do it by accidant. Not so for the GET.
--
Rik Wasmus

> The part about the GET variables?
> Most rewriting is done to get variables, for instance:
> http://example.com/foo/bar
> Is rewritten internally to:
> http://example.com/index.php?foz=foo&baz=bar
>
> That's a piece of cake, and usally works. Now what if we're trying this
> URL:
> http://example.com/foo/bar?foz=var
>
> It's highly dependant on the actual rewrite and/or the receiving script
> wether this script thinks the GET variable foz is 'var', 'foo', or maybe
> both.
>
> While POST & HEADER values can be altered, this most be done very
> explicitly, so it's very hard to do it by accidant. Not so for the GET.
> --
> Rik Wasmus

Rik,

With you. I won't need to request files with additional values passed
on the querystring. So the first example will apply. As long as I can
read the requesting header information, then I should be fine.

Many thanks

Dave

On 15 Feb, 14:57, "Dave" <spambox.dcc...@gmail.com> wrote:
> > The part about the GET variables?
> > Most rewriting is done to get variables, for instance:
> > http://example.com/foo/bar
> > Is rewritten internally to:
> > http://example.com/index.php?foz=foo&baz=bar
>
> > That's a piece of cake, and usally works. Now what if we're trying this
> > URL:
> > http://example.com/foo/bar?foz=var
>
> > It's highly dependant on the actual rewrite and/or the receiving script
> > wether this script thinks the GET variable foz is 'var', 'foo', or maybe
> > both.
>
> > While POST & HEADER values can be altered, this most be done very
> > explicitly, so it's very hard to do it by accidant. Not so for the GET.
> > --
> > Rik Wasmus
>
> Rik,
>
> With you. I won't need to request files with additional values passed
> on the querystring. So the first example will apply. As long as I can
> read the requesting header information, then I should be fine.
>
> Many thanks
>
> Dave

$_SERVER["HTTP_RANGE"] is what you need, and then you need to send
back a couple of headers to the application which plays the mpeg:
for instance here is the RR cycle for a raw mp3:
GET /readings/listen/esv/February15.mp3 HTTP/1.1
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:
1.8.1.1) Gecko/20061204 Firefox/2.0.0.1
Accept: text/xml,application/xml,application/xhtml+xml,text/
html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Keep-Alive: 300
Range: bytes=417792-
If-Range: "228f8-3a43cd-708051a3"


HTTP/1.1 206 Partial Content
Date: Thu, 15 Feb 2007 22:33:25 GMT
Server: Microsoft-IIS/7.0
Last-Modified: Wed, 14 Feb 2007 00:01:07 GMT
ETag: "228f8-3a43cd-708051a3"
Accept-Ranges: bytes
Content-Length: 3400653
Vary: User-Agent
Content-Range: bytes 417792-3818444/3818445
Content-Type: audio/mpeg


the user-agent knew the Etag for the mp3, apache responds with this e-
tag as well as the Content-Range, and Accept-Ranges headers

make sure you generate the right headers with your php script and you
should be fine, and then of course read from the correct offset!!

On 15 Feb, 22:45, "shimmyshack" <matt.fa...@gmail.com> wrote:
> On 15 Feb, 14:57, "Dave" <spambox.dcc...@gmail.com> wrote:
>
>
>
> > > The part about the GET variables?
> > > Most rewriting is done to get variables, for instance:
> > > http://example.com/foo/bar
> > > Is rewritten internally to:
> > > http://example.com/index.php?foz=foo&baz=bar
>
> > > That's a piece of cake, and usally works. Now what if we're trying this
> > > URL:
> > > http://example.com/foo/bar?foz=var
>
> > > It's highly dependant on the actual rewrite and/or the receiving script
> > > wether this script thinks the GET variable foz is 'var', 'foo', or maybe
> > > both.
>
> > > While POST & HEADER values can be altered, this most be done very
> > > explicitly, so it's very hard to do it by accidant. Not so for the GET.
> > > --
> > > Rik Wasmus
>
> > Rik,
>
> > With you. I won't need to request files with additional values passed
> > on the querystring. So the first example will apply. As long as I can
> > read the requesting header information, then I should be fine.
>
> > Many thanks
>
> > Dave
>
> $_SERVER["HTTP_RANGE"] is what you need, and then you need to send
> back a couple of headers to the application which plays the mpeg:
> for instance here is the RR cycle for a raw mp3:
> GET /readings/listen/esv/February15.mp3 HTTP/1.1
> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:
> 1.8.1.1) Gecko/20061204 Firefox/2.0.0.1
> Accept: text/xml,application/xml,application/xhtml+xml,text/
> html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
> Keep-Alive: 300
> Range: bytes=417792-
> If-Range: "228f8-3a43cd-708051a3"
>
> HTTP/1.1 206 Partial Content
> Date: Thu, 15 Feb 2007 22:33:25 GMT
> Server: Microsoft-IIS/7.0
> Last-Modified: Wed, 14 Feb 2007 00:01:07 GMT
> ETag: "228f8-3a43cd-708051a3"
> Accept-Ranges: bytes
> Content-Length: 3400653
> Vary: User-Agent
> Content-Range: bytes 417792-3818444/3818445
> Content-Type: audio/mpeg
>
> the user-agent knew the Etag for the mp3, apache responds with this e-
> tag as well as the Content-Range, and Accept-Ranges headers
>
> make sure you generate the right headers with your php script and you
> should be fine, and then of course read from the correct offset!!



I suppose I should add that theres a great resource at http://
www.ampache.com
for instance in the play folder theres a file called index.php which
has these lines:

if ($start) {
debug_event('seek','Content-Range header recieved, skipping ahead ' .
$start . ' bytes out of ' . $song->size,'5');
$browser->downloadHeaders($song_name, $song->mime, false, $song-
>size);
fseek( $fp, $start );
$range = $start ."-". ($song->size-1) . "/" . $song->size;
header("HTTP/1.1 206 Partial Content");
header("Content-Range: bytes=$range");
header("Content-Length: ".($song->size-$start));
}

I havent determined whether it can handle streaming at just above the
average bit rate, which can be useful, but it seems an active project.
Although some of the code is a work in progress.

Yes, that's pretty much how I've done this in .NET
I couldn't find much at http://www.ampache.com, sorry.

Just one other question...

I'm trying to resolve this rule:

RewriteRule ^test.html?s=([0-9]+)&b=([0-9]+) /folder$1/$2/test.html

where you would supply test.html?s=2&b=14016, which would rewrite the
url to: /folder2/14016/test.html

However, I can't get it to work using the above rule. Can anyone help
please?

Thanks

Dave

On 16 Feb, 14:02, "Dave" <spambox.dcc...@gmail.com> wrote:
> Yes, that's pretty much how I've done this in .NET
> I couldn't find much athttp://www.ampache.com, sorry.
>
> Just one other question...
>
> I'm trying to resolve this rule:
>
> RewriteRule ^test.html?s=([0-9]+)&b=([0-9]+) /folder$1/$2/test.html
>
> where you would supply test.html?s=2&b=14016, which would rewrite the
> url to: /folder2/14016/test.html
>
> However, I can't get it to work using the above rule. Can anyone help
> please?
>
> Thanks
>
> Dave

sorry my mistake: http://www.ampache.org

it seems strange to me that you are rewriting things this way when you
could just later the links.
However you can use
ReWriteCond %{QUERY_STRING} s=([0-9]+)&b=([0-9]+)
RewriteRule . /folder%1/%2/test.html [L,NS]
where the syntax %1 rather than $1 is because it matches against the
last conditions.