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Using a torrent file from
http://torrent.ubuntu.com:6969/
I am calculating its hash which matches with the hash on the page.
Then i make a request to the tracker. Like
http://torrent.ubuntu.com:6969/announce?info_hash=9a81333c1b16e4a83c10f3052c1590aadf5e2e20
But i get
d14:failure reason63:Requested download is not authorized for use with this tracker.e
According to the spec this should work?
Tracker Spec General Spec
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The "tracker" server keeps track of where file copies reside on peer machines, which ones are available at time of the client request, and helps coordinate efficient transmission and reassembly of the copied file.
If you aren't familiar with BitTorrent jargon, a tracker is a server that coordinates the peer-to-peer connections in a swarm. It doesn't host any files but connects you to the other users sharing the files you want.
Your internet service provider can't instantly tell if you're using BitTorrent, nor can they tell what you're downloading on it. Most torrent clients have some form of encryption, which makes it harder for ISPs (and your home router) to pin down that BitTorrent traffic.
You specified the info_hash in hex, rather than URL-encoding. The bytes of the SHA-1 hash should be encoded directly, like this:
http://torrent.ubuntu.com:6969/file?info_hash=%9A%813%3C%1B%16%E4%A8%3C%10%F3%05%2C%15%90%AA%DF%5E.%20
Also, for the announce URL, some additional parameters like peer_id are usually required.
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