jcserve will give you a SHA512 hash of a password, encoded in base64
In the httpserver directory, run
go build
./httpserver
Then, with your http client, POST to
http://localhost:8080/hash
with the data
password=YOUR_PASSWORD
The server will log the number of active and total connections.
To shut down the server, user your http client to access
http://localhost:8080/shutdown