basic IPC example connecting node and golang together with unix socket (named pipe)

client.go

package main

import (
	"io"
	"log"
	"net"
	"time"
)

func reader(r io.Reader) {
	buf := make([]byte, 1024)
	for {
		n, err := r.Read(buf[:])
		if err != nil {
			return
		}
		println("client got:", string(buf[0:n]))
	}
}

func main() {
	c, err := net.Dial("unix", "/tmp/foo.sock")
	if err != nil {
		log.Fatal("dial error", err)
	}
	defer c.Close()

	go reader(c)
	for {
		msg := "hi"
		_, err := c.Write([]byte(msg))
		if err != nil {
			log.Fatal("write error:", err)
			break
		}
		println("client sent:", msg)
		time.Sleep(1e9)
	}
}

server.js

const net = require('net')
const fs = require('fs')

try {
  // remove existing socket if exists
  fs.unlinkSync('/tmp/foo.sock')
} catch {}

net.createServer()
  .listen('/tmp/foo.sock', () => {
    console.log('server listening')
  })
  .on('connection', socket => {
    console.log('client connected')
    socket.setEncoding('utf8')
    socket.on('data', data => {
      console.log(`server received: ${data}`)
      socket.write(data.toUpperCase())
    })
  })