Did you go through all those links I provided in your last topic? Are you running both server and client on same RPi? What client Library (programming language) are you using?
We can point you in a few directions, make some recommendations, but you will need to learn a bit of coding… and how to maneuver around a bit in Linux… particularly necessary with the RPi.
I recommend learning the NodeJS method with the RPi… at least then are a few more examples out there you can tear into and try to learn how they work. And Google is your friend.