CODEWITHSUNDEEP
c#bittorrent
Nebeski
Nebeski

Reputation: 610

How do I send a request to a UDP tracker?

I am learning about BitTorrent protocol and I managed to make a simple little program that can load a torrent file, parse it, get a tracker from it, then send a GET request to the tracker, and do a handshake with one peer. But now I came by a UDP tracker in the form udp://example.to:999/announce.

With a regular tracker I would do (in C#):

HttpWebRequest request =(HttpWebRequest)WebRequest.Create(request_string);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

How do I send a request and get a response with an UDP tracker?

Upvotes: 1

Views: 1308

Answers (2)

Nebeski
Nebeski

Reputation: 610

The class I needed in C# was System.Net.Sockets.UdpClient. If your udp tracker address is udp://example.to:999/announce, then you need to initialize your UdpClient with:

UdpClient udpTracker = new UdpClient("example.to", 999);

Then use appropriate methods for sending and receiving information. For what needs to be sent to the tracker refer to UDP Tracker Protocol.

Upvotes: 0

Encombe
Encombe

Reputation: 2090

You need to implement the UDP Tracker Protocol that is specified in:
BEP15 - UDP Tracker Protocol.

Upvotes: 1

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