[KIO] Regarding KIO based redirection handling and header responses

[Dawit A]

http://paste.kde.org/492344/

I thought you would be able to simply look for the headers by simply
connecting to the "mimeType" or "redirection" KIO signals, but that turns
out to be not possible. The only way you can obatin those redirection
headers is to disable the redirection like you are doing in your code, but
then connect to the "result" signal and cast the KJob into KIO::Job.
Alternatively, you can store the KIO::TransferJob instance in a member
variable and use that if you do not want to do the cast.

On Sun, Jun 3, 2012 at 12:32 AM, Aish Raj Dahal <dahalaishraj at gmail.com>wrote:

> Hello there,
>
> I've tried using the mimetype signal as suggested by you but I seem to get
> the same headers(the redirected ones). Here is the code
> http://paste.kde.org/492068/ .
> If there is any other way by which KIO can me made to do this, please let
> me know. :)
>
> Thanks.
>
>
> On Sun, Jun 3, 2012 at 8:01 AM, Dawit A <adawit at kde.org> wrote:
>
>> Unless you explicitly disable internal redirection handling, you will
>> never be able to get the redirection HTTP header from kio_http if you are
>> attempting to read from a slot connected to KIO's "result" signal. Instead,
>> what you should try to do is connect to the "mimeType" signal and look for
>> the meta-data there.
>>
>>
>> On Sat, Jun 2, 2012 at 9:00 PM, Aish Raj Dahal <dahalaishraj at gmail.com>wrote:
>>
>>> Respected members of the community,
>>>
>>> First of all let me introduce myself. I am a Google Summer of Code 2012
>>> student implementing Metalink/HTTP [RFC 6249] support in Kget. In most
>>> basic terms my implementation involves receiving of the custom HTTP
>>> response header fields sent by the server supporting Metalink/HTTP. I have
>>> been trying to use KIO and extract the information from the custom HTTP
>>> response headers sent back by the server, however it has been in vain.
>>>
>>> I am using
>>> http://download.services.openoffice.org/files/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gzto check the Metalink/HTTP. It works fine while running
>>>
>>> curl -sI
>>> http://download.services.openoffice.org/files/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz
>>>
>>> However, while doing so using KIO, I've encountered problems.
>>> It seems that the header replies that KIO gets are of the redirected
>>> download link, ( the same  as Konqueror gets it while typing the link in
>>> the address bar)
>>> However my objective is to prevent the redirection and directly obtain
>>> the HTTP header response sent by the server.
>>> I have tried with setRedirectionHandlingEnabled(false). But on doing
>>> this there is no response and the program gets stuck.
>>> On removing the redirection handling code and setting it to the defaults
>>> the redirection presisits.
>>>
>>>
>>> The output that(with the redirection left to defaults) I get is
>>>
>>> "HTTP/1.1 200
>>> OK
>>> server:
>>> nginx/0.8.54
>>> date: Fri, 25 May 2012 14:32:56
>>> GMT
>>> content-type:
>>> application/octet-stream
>>> content-length: 8957266
>>> last-modified: Mon, 17 Jan 2011 22:03:15 GMT
>>> connection: close
>>> accept-ranges: bytes"
>>>
>>> And the output that I should be actually getting is:
>>>
>>> HTTP/1.1 302 Found
>>> Date: Fri, 25 May 2012 13:13:14 GMT
>>> Server: Apache/2.2.22 (Linux/SUSE)
>>> X-Prefix: 49.244.64.0/21
>>> X-AS: 23752
>>> X-MirrorBrain-Mirror: mirror.averse.net
>>> X-MirrorBrain-Realm: region
>>> Link: <
>>> http://download.services.openoffice.org/files/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz.meta4>;
>>> rel=describedby; type="application/metalink4+xml"
>>> Link: <
>>> http://download.services.openoffice.org/files/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz.torrent>;
>>> rel=describedby; type="application/x-bittorrent"
>>> Link: <
>>> http://mirror.averse.net/openoffice/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz>;
>>> rel=duplicate; pri=1; geo=sg
>>> Link: <
>>> http://ftp.isu.edu.tw/pub/OpenOffice/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz>;
>>> rel=duplicate; pri=2; geo=tw
>>> Link: <
>>> http://ftp.twaren.net/OpenOffice/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz>;
>>> rel=duplicate; pri=3; geo=tw
>>> Link: <
>>> http://ftp.kaist.ac.kr/openoffice/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz>;
>>> rel=duplicate; pri=4; geo=kr
>>> Link: <
>>> http://mirror.yongbok.net/openoffice/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz>;
>>> rel=duplicate; pri=5; geo=kr
>>> Digest: MD5=chZROzRjy791zYb5mUhk3A==
>>> Digest: SHA=nRgEtguiGxDlu8PKSxyBSc7TlGw=
>>> Digest: SHA-256=VO2S9pgCq1lqgTFTKssVj6amn0npNdagtjI8ziDtiRQ=
>>> Location:
>>> http://mirror.averse.net/openoffice/stable/3.3.0/OOo-SDK_3.3.0_Linux_x86-64_install-deb_en-US.tar.gz
>>> Connection: close
>>> Content-Type: text/html; charset=iso-8859-1
>>>
>>> My "practice" repository is at
>>> https://github.com/ardahal/kio-learner/tree/master/showHttp
>>>
>>> I hope you'll go through the code and help me with figuring out how to
>>> get the desired result. :)
>>>
>>> Thanks a lot.
>>>
>>> Cheers
>>> Aish
>>> Google Summer of Code Student 2012
>>>
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.kde.org/mailman/private/kfm-devel/attachments/20120603/77b55ebb/attachment.htm>