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GadiK
Joined: 14 Jul 2010
Posts: 14
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 Posted: Sat 22 Jan '11 13:24 Post subject: Using mod_bw with Location directive |
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Hi all,
We're using Apache 2.2.16 (Windows) for our server.
We want to limit the number of simultaneous downloads from a certain url.
We've modified mod_bw to allow us to state the allowed max connections.
Using <Location> directive we've configured the connection limit to a certain url.
When not using cache it works fine. However, when using cache (mod_cache) the configuration isn't read from the <Location> block.
If we write the configuration outside the <Location> block it is read, but not from within the block.
Does anyone have any idea why this is happening?
Thank you,
Gadi K |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7371
Location: Germany, Next to Hamburg
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| Posted: Mon 24 Jan '11 17:26 Post subject: |
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From the FAQ page and the examples I've seen I'm not sure if it is working in <location> (haven't tried / won't try), but it work in Directory. if that url is not a virtual one and inside your wwwroot you could limit it that way-
e.g.
| Code: |
<VirtualHost *:80>
BandWidthModule On
BandWidth all 16384
LargeFileLimit * 500 4096
<Directory "c:/apache22/wwwroot/somefolder>
LargeFileLimit * 100 1024
</Directory>
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This wont limit Directory c:/apache22/wwwroot/somefolder to 16384. The Directory wont "inherit" the settings from the vhost if you use some of the mod's directives. |
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GadiK
Joined: 14 Jul 2010
Posts: 14
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| Posted: Mon 24 Jan '11 17:53 Post subject: |
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Thanks for the answer. But, I am afraid I haven't made myself clear enough. I should've wrote the configuration like you did. We are using the directives inside the loaction tags:
| Code: | <Location /foo/bar>
BandWidthModule On
MaxCons all 50 //we added this functionality to better suit our needs
</Location> |
And we expect it to limit number of concurrent connections for all URLs that begin with /foo/bar.
If we weren't using mod_cache it would've worked. However, we are using mod_cache and since mod_cache uses ap_hook_quick_handler() it always serves the request before any other module.
This in mind, we modified mod_bw to also use ap_hook_quick_handler(), and mod_cache to call mod_bw itself:
| Code: |
static const char * const aszPre[] = {"mod_bw.c", NULL};
ap_hook_quick_handler(cache_url_handler, aszPre, NULL, APR_HOOK_FIRST);
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Then we found out that using ap_hook_quick_handler() has its drawbacks since it is called before any request processing. Apparently the location enclosed directives are not available.
Right now we have solved the problem by adding a call to ap_location_walk() at the beginning of mod_bws' handle function. This gives us the information we need and the wanted functionality works. However, this doesn't feel like the best solution since ap_location_walk() isn't a very documented function.
Anyone has an alternative?
Thank you,
Gadi K |
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chachotoro
Joined: 25 Jan 2011
Posts: 3
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| Posted: Tue 25 Jan '11 12:56 Post subject: |
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Hello,
I'm looking for the bw_mod for apache 2.2.16 (windows).
I read that you have it.
Could you tell me where you found it ?
Thank you.
Sorry for the bad english... |
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GadiK
Joined: 14 Jul 2010
Posts: 14
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| Posted: Tue 25 Jan '11 13:04 Post subject: |
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Well actually I didn't download it myself I inherited this project from someone else. However, a quick google search came up with this:
http://bwmod.sourceforge.net/# |
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chachotoro
Joined: 25 Jan 2011
Posts: 3
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| Posted: Tue 25 Jan '11 15:21 Post subject: |
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Thank you very much for your answer but the version i find is for apache 2.0.54 :
Get Bandwidth Mod v0.7 (Windows DLL for 2.0.54)
and nothing for 2.2.16 (Windows). |
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glsmith
Moderator
Joined: 16 Oct 2007
Posts: 2268
Location: Sun Diego, USA
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| Posted: Tue 25 Jan '11 16:54 Post subject: |
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That's an old Google summer of code page from a few years ago. The module is at version 0.92, the Windows build is 0.91 (no changes in 0.92 affecting Apache 2.2). This module can be used for Apache from apache.org and some others. It was built against 2.2.14 but will work with 2.2.16.
http://apache.ivn.cl/
People running VC9 built versions of Apache from Apache Lounge or Apache Haus, there are both x86 & x64 versions of mod_bw/0.92 at Apache Haus |
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chachotoro
Joined: 25 Jan 2011
Posts: 3
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| Posted: Wed 26 Jan '11 21:19 Post subject: |
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Sorry but in final the problem seems not to be with the version of the dll.
Because with the last version i have the same problem.
I think it's not a problem with apache but with windows because when i try the dos command : loadlibrary("mod_bw.dll") a echoué (= failed)
Do you have an idea ?
Does this library need some prerequisites ?
Thank you for your answers.
Chacho. |
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glsmith
Moderator
Joined: 16 Oct 2007
Posts: 2268
Location: Sun Diego, USA
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| Posted: Wed 26 Jan '11 23:07 Post subject: |
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| I don't know what your doing there at the command line but how are you loading it in Apache? If it errors, what's in Apache's error log and Windows Event Log? |
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GadiK
Joined: 14 Jul 2010
Posts: 14
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| Posted: Tue 01 Feb '11 18:12 Post subject: |
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Can we get back to my original post?
Has anyone ever dealt with this kind of situation where a module needs to run its handler before mod_cache??
Thank you. |
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