read this first: https://teknokoodiradio.vuodatus.net/lue/2021/02/rds-data-from-sdr-to-rdsspy-with-tcp

Some new features added:
IP address
TCP time to live value
TCP dont fragment on/off
TCP no delay on/off

rds2spy2.jpg

https://i.ibb.co/XVyZSbq/rds2spy2.jpg