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Re: Squid does not cache file download by FileZilla and apache FTPCLIENT

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On 21/05/20 9:35 pm, david770514 wrote:
> Hello everyone,
> 
> I need to implement FTP transfer via Squid proxy.
> I use Web browser (Firefox, IE) to download file by my PC after the PC
> already set the proxy server from Windows setting. The message in store.log
> shows Squid has cached the file on it properly.
> 
> The problem is it isn't working when I use "FileZilla" or
> "apache.commons.net.ftp.FTPHTTPClient" to download file. I still be able to
> download the file from FTP server via Squid proxy, but Squid won't cache the
> file. I can't get message about the cache in store.log file.
> 
> I tried set proxy server in FileZilla directly(don't set proxy on windows),
> and it still not cache, only download the file. Do I need have some special
> setting on FTPHTTPClient to make it happen?
> 
> Is there anyone can help me?
> 

Look at what requests is Squid seeing in access.log when you do these
downloads. Then find out what type of messaging the various settings in
that "apache.commons.net.ftp." config do.

* FTP sent as CONNECT tunnels through the proxy cannot be cached.

* FTP Native relay feature of Squid does not yet support caching IIRC.

* FTP sent as ftp:// URLs through the proxy should cache in accordance
with whatever details Squid is able to fetch from the FTP server about
file creation and modification times vs the Cache-Control limits sent by
the client.


Amos
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