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Fred_Flintstone

Specifics of Announce Seeder List Transmitted From Trackers to Clients?

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For torrents that have been successfully downloaded and are seeding back on a private tracker without PEX/DHT...

I'd like to understand a couple specifics as to how trackers transmit the seeder list to a client every 30 minute announce interval.

Does a tracker send a full seeder list to a client the very first time and subsequent times it only transmits a list of seeders that have been added/removed?  ...or does it transmit the full seeder list each announce interval?

How it's handled would certainly be far more pronounced for a torrent with 5000 seeders vs 5 seeders.

Also, I've seen a few torrent clients that have a selectable option to disconnect from fellow seeders when seeding.  Perhaps there's a tiny chance that influences the list the tracker transmits?

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10 minutes ago, Fred_Flintstone said:

Does a tracker send a full seeder list to a client the very first time and subsequent times it only transmits a list of seeders that have been added/removed?  ...or does it transmit the full seeder list each announce interval?

Neither. On the announce cycle, a small randomized list of both peers and seeds is sent.

Some tracker software is coded to not send seeds in the list when the requesting client is a seed.

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3 hours ago, DreadWingKnight said:

Neither. On the announce cycle, a small randomized list of both peers and seeds is sent.

Some tracker software is coded to not send seeds in the list when the requesting client is a seed.

Good info.  I appreciate your sharing.

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