// server.js

const SyncIPCServer = require("node-sync-ipc").SyncIPCServer;

// pipe File
// on Unix based systems, pipe file should be a sock file path
// on Windows, pipe should be named pipes
// const pipeFile = "\\\\.\\pipe\\somePipeName"; // <- windows
const pipeFile = path.join(require('os').tmpDir(), 'tmp.sock');

const server = new SyncIPCServer(pipeFile);

server.startListen();

server.onMessage("foo",function(res,bar){
    bar = bar + " " +bar;
    // block the child process for one second
    setTimeout(function(){
        // the first argument will be passed to child process as the result
        res(bar);
    },1000)
});

//stop server when not needed
//server.stop()

// client.js

const SyncIPCClient = require("node-sync-ipc").SyncIPCClient;

// pipe File to connect to
const serverHandle = path.join(require('os').tmpDir(), 'tmp.sock');

const client = new SyncIPCClient(serverHandle);

// will log "echo content echo content" in console

console.log(client.sendSync("foo","echo content"));