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hstratum

A segwit-capable stratum server on top of hsd. This is a hsd plugin which will run a stratum server in the same process as a hsd fullnode.

Usage

hstratum can be used as a hsd plugin.

$ hsd --plugins hstratum \
  --stratum-host :: \
  --stratum-port 3008 \
  --stratum-public-host pool.example.com \
  --stratum-public-port 3008 \
  --stratum-max-inbound 1000 \
  --stratum-difficulty 8 \
  --stratum-dynamic \
  --stratum-password=admin-pass

Cutting out the middleman

While having a stratum+fullnode marriage violates separation of concerns, it provides a benefit to large competitive miners: because it sits in the same process, there is no overhead of hitting/longpolling a JSON-rpc api to submit or be notified of new blocks. It has direct in-memory access to all of the data it needs. No getwork or getblocktemplate required.

It can also broadcast submitted blocks before verifying and saving them to disk (since we created the block and know it's going to be valid ahead of time).

Single point of failure?

There's nothing to say you can't have multiple hsd-nodes/stratum-servers behind a reverse/failover proxy still. It's only a single point of failure if you treat it that way.

Payouts

Shares are currently tracked by username and will be dumped to ~/.hsd/stratum/shares/[height]-[hash].json when a block is found. A script can parse through these later and either add the user's balance to a webserver or pay directly to an address. Users are stored in a line-separated json file in ~/.hsd/stratum/users.json.

Administration

hstratum exposes some custom stratum calls: mining.authorize_admin('password') to auth as an admin and mining.add_user('username', 'password') to create a user during runtime.

Todo

  • Reverse/failover proxy for HASH(sid)->hsd-stratum-ip.

Contribution and License Agreement

If you contribute code to this project, you are implicitly allowing your code to be distributed under the MIT license. You are also implicitly verifying that all code is your original work. </legalese>

License

Copyright (c) 2017-2018, Christopher Jeffrey (MIT License). Copyright (c) 2019, Handshake Alliance (MIT License).

See LICENSE for more info.


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