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List:       kde-devel
Subject:    Re: Using KIO to retrive HTTP Headers [GSoC student help request]
From:       Albert Astals Cid <aacid () kde ! org>
Date:       2012-06-28 18:04:46
Message-ID: 18888744.iaPnoLtcBm () xps
[Download RAW message or body]

El Dijous, 28 de juny de 2012, a les 06:13:15, Aish Raj Dahal va escriure:
> Respected members of the KDE community,
> 
> I am a Google Summer of Student working in the integration of Metalink
> HTTP [RFC 6249] in KDE's KGet Download manager.
> 
> My work involves in retrieval of HTTP header response from the server
> and processing of the headers for download information. So, far
> although I have been able to capture the HTTP header responses from
> the server,  there is an issue with large files.
> 
> The issue is that KIO attempts to download the entire file before
> being able to query for its HTTP header responses. This behavior may
> be taken lightly for smaller files, however for larger files
> downloading an entire file, just to get the HTTP header response
> associated with it seems to be impractical.

I don't think that's correct, from what i see looking at the http kioslave it 
forwards to the application the headers as soon as gets them. And if it does 
not it's a bug and you should fix it :-)

Cheers,
  Albert

> 
> I will be thankful to you if you could kindly help me in finding a way
> in which I'm able to get the header response without downloading the
> entire file. In this process please note that the redirection has to
> disabled.
> 
> As a possible solution to the problem, since, a Metalink header
> response has the content type "text/html", I have tried using the
> mimetype signal  received during a header response with the KIO::Job ,
> but it seems to be ineffective, for some reason. I'd be really
> thankful if you could help me in implementing this approach.
> 
> Lastly, my development repository is located on Github at
> https://github.com/ardahal/kio-learner . The branch "master" contains
> my efforts to use the mimetype in solving the problem, whereas the
> branch "experimental" contains the original (stable) version which
> needs to download an entire file before querying the HTTP header
> response.
> 
> Last but not the least, thank you very much in taking interest in
> reading this email, I hope to have your wholehearted support and
> guidance in helping me solve the problem, as my Summer of Code project
> fully depends on it.
> 
> Thank You very much.
> 
> Regards
> Aish R Dahal
> Google Summer of Code Student 2012
> Metalink / KGet
> 
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