HTTPS tracker support

[drfrogsplat]

Support for trackers accessible only by HTTP over a SSL, or more simply, "https".

Currently, when adding a torrent in which the tracker URL is prefixed by "​https://" an error is generated in the Transmission Message Log: "ERR Invalid announce URL (​https://...)"

The desired behaviour, instead, is that Transmission should be able to use these URLs to access the tracker, exactly as it would a simple HTTP URL.

[drfrogsplat]

There appears to be a slight change in the behaviour described since it was reported (now at version 1.01)

Transmission now appears to silently (i.e. its not mentioned in the Transmission Message Log - even at Debug level) convert the tracker URL from "​https://..." to "​http://..."

Presumably if the tracker offers both methods of access this will work fine, however where it does not this results in something along the lines of "Tracker: Error - Not Found"

[SchAmane]

There is small patch for libevent to support HTTPS with OpenSSL, but its little bit outdated.

Maybe somebody can adopt it for current version to see if HTTPS Tracker support will work with it?

​http://msgbus.googlecode.com/svn/trunk/libevent.diff

[charles]

One possible approach is to replace evhttp with libcurl as our web backend. It looks like, as of curl 7.16, we can even use ​curl_multi_socket_action to let libcurl use our existing libevent loop. I've Googled and found some sample code that does this and will attach it to this ticket.

[charles]

sample code for integrating libevent and libcurl

[charles]

another libcurl + libevent example, possibly closer to what our code will need to look like:

​http://cvs.php.net/viewvc.cgi/pecl/http/http_request_pool_api.c?revision=1.61&view=markup

[charles]

And a breadcrumb for the libcurl API call to work with libevent:

​http://curl.haxx.se/libcurl/c/curl_multi_socket.html

[livings124]

[5673] - [5677]

[charles]

IMO it's premature to close this ticket... there are a lot of changes that need testing.

[charles]

[5690] make the tracker status lines human-readable again