Review Request: Proxy overhaul Part 5: Add support for trying multiple proxies to KIO HTTP

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This review has been submitted with commit d75755d97da50a7a812998b163866162c787abcb by Dawit Alemayehu to branch frameworks.

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On Sept. 27, 2011, 9:12 p.m., Dawit Alemayehu wrote:
> 
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> http://git.reviewboard.kde.org/r/102696/
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> 
> (Updated Sept. 27, 2011, 9:12 p.m.)
> 
> 
> Review request for kdelibs.
> 
> 
> Description
> -------
> 
> This 5th patch in a serious of patches meant to improve proxy support in KDE deals with support at the kioslave level. More specifically the http ioslave. The patch is necessary to provide proper support for PAC script based proxy configuration. Namely allowing aleternate proxy servers to be specified and used as necessary. Here are the change this patch makes:
> 
>      * Add a new function in TCPSlaveBase to connect to the a remote server without 
>         automatically sending error notitification to the client. [NEW API]
>     
>      * Move the proxy related code from 'resetSessionSettings' to 'httpOpenConnection'.
>        Proxy information will now be only set from 'setHost' and reset from 
>        'reparseConfiguration' as it should have been from the beginning. No need to 
>        reparse proxy related information on every request.
>     
>      * Added a new variable, proxyUrls, to HTTPRequest to store the multiple proxy URLs
>         obtained from the "ProxyUrls" meta-data.
>     
>      * Modified 'httpShouldCloseConnection' to account for multiple proxy addresses.
>     
>      * Modified 'sendQuery' to connect to the remote server before formatting the HTTP
>        headers so that the headers can properly reflect the correct proxy settings.
> 
> 
> Diffs
> -----
> 
>   kio/kio/tcpslavebase.h 3f87ea8 
>   kio/kio/tcpslavebase.cpp ec70559 
>   kioslave/http/http.h d8c47c7 
>   kioslave/http/http.cpp 6d41a13 
> 
> Diff: http://git.reviewboard.kde.org/r/102696/diff/diff
> 
> 
> Testing
> -------
> 
> - Tested changes using a real proxy server, privoxy.
> 
> - Tested changes using a poor man's SOCKS proxy setup: 
>       ssh -D <port#> <ssh-server-address>
>    and the following PAC script:
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> function FindProxyForURL( url, host )
> {
>     var resolved_ip = dnsResolve(host);
>     
>     if (isInNet(resolved_ip, "127.0.0.1", "255.255.255.0"))
>         return "DIRECT";
> 
>     return "SOCKS 127.0.0.1:9999; DIRECT";
> }
> 
> 
> Thanks,
> 
> Dawit Alemayehu
> 
>

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