TCP issue: sending data to specific client from server

Hi there, I have few questions to ask.

First, is it impossible to TCP Server to send data only to clients I choose, not every client?
I need to send different data to different clients, but I noticed that TCP Server node seems that it has no pins to manipulate such operation.

Second, is there any way to access to core code of existing node, like editing dynamic plugins?

Thanks for reading and paying attention.
Every answer will be greatly appreciated and help me a lot!

the code of the native nodes is closed source, you can’t see it.

as for your problem, i would put the server node to the clients and use a client node on your server. you can spread the IP input of the client node, so your able to send to each specific IP separately.

Thank you for your reply. it helped me a lot!