Fast multiplatform library for sockets?

Question

Internationalization and localization

The project requires a library that provides a very lightweight implementation of UDP sockets in three languages: JavaScript, Java (Android), Swift (iOS).
It is necessary to send the state of the client to the server and vice versa with great frequency (you need good serialization of messages and compression).
One server - one client (single socket).

I would like that on the server (JS):

server = library.createServer(port, event => { ...MESSAGE HANDLER... } )
server.send('sdfsdfgdsg');

Something like this on clients:

client = library.connect(hostname, event => { ...MESSAGE HANDLER... } )
client.send('sdgfsdfgdsfg');

What do you advise?