Crystalline: a SeedLink client written in Go

Running

You can run the CLI right now.

go run cli.go host:port

Where host:port is the address of the SeedLink server you want to connect to. For example:

go run cli.go seisrequest.iag.usp.br:18000

This will connect to the Universidade de São Paulo's SeedLink server, ran by the Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG/USP).

Then, proceed as normal: send a HELLO command to the server to initiate the handshake. After that, consult the SeedLink protocol documentation to see what to do next. An example of a HELLO command is:

[renan@kingston crystalline]$ go run cli.go seisrequest.iag.usp.br:18000
Connecting to server seisrequest.iag.usp.br on port 18000...
Crystalline Interactive Shell. Type 'exit' to quit.
> hello
SeedLink v3.3 (2024.020)
Centro de Sismologia da USP

>

TODO

• write common behaviors (such as a Initiate function that sends HELLO and USERAGENT on v4, HELLO on v3);
• miniSEED support for data mode;
• automatic station discovery (via CAT on v3, INFO STATIONS on v4. btw CAT isn't available on USGS servers);
• abstract behaviors so both v3 and v4 servers are supported;
• distribute alongside a GUI to quickly connect and visualize real-time data.