Getting seeders and liquors to clean from udp tracker
I am trying to implement a scrape method for a UDP tracker, but I keep getting 0 planters / leechers as a response. I am still getting 2 as an action, so no error is reported. I have hardcoded the hash here to show that it does not affect the result I get.
final ByteArrayOutputStream byteStream =new ByteArrayOutputStream();
final DataOutputStream dataStream =new DataOutputStream(byteStream);
dataStream.writeInt(connectResponse.get("connectionId0"));
dataStream.writeInt(connectResponse.get("connectionId1"));
dataStream.writeInt(2);
dataStream.write(connectResponse.get("transactionId"));
bencodeWriter.write(byteOut.toString());
dataStream.writeChars("1D19CC96C1A4965D184E4B215942DBC0A09FF8F2");
dataStream.close();
final byte[] scrapeBytes= byteStream.toByteArray();
I tried different trackers but got the same answer. What could be the problem?
Edit: Added a hex dump of all requests and responses:
Connect request:
Connect the answer:
Cleaning request:
Scratch answer:
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In a Scrape request, transaction_id
= is 0x36
sent as one byte instead of 4 bytes = 0x00000036
and info_hash
sent as an 80 byte string, which is hex encoded, each character appended with a zero byte 0x00
instead of a 20 byte string. I.E. 0x0031004400310039...
instead0x1D19...
There are no peers in Scrape's response as there are no torrents with info_hash data sent in the request.
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