how to communicate between two node.js instances, one client one server
node.js
Solution
Short answer: you can use the command
node client.js
to run your "client side" code, it will send one http request
Regarding to what's `server side` and what's `client side`, it's really depends on the context.
Although in most cases, `client side` means the code running on your browser or your mobile phone app, `server side` means the "server" or "back end" your browser or your mobile phone is talking to.
In your case, I think it's more like one "server" talks to another "server", and they are both on the back end, since that's what node.js is designed for
Problem
I am a beginner in node.js (infact started just today). One of the basic concepts is not clear to me, which I am asking here & couldn't find on SO. Reading some tutorials on the web I wrote a client side & a server side code: Server side (say server.js): ``` var http = require('http'); //require the 'http' module //create a server http.createServer(function (request, response) { //function called when request is received response.writeHead(200, {'Content-Type': 'text/plain'}); //send this response response.end('Hello World\nMy first node.js app\n\n -Gopi Ramena'); }).listen(1337, '127.0.0.1'); console.log('Server running at http://127.0.0.1:1337/'); ``` Client side (say client.js): ``` var http=require('http'); //make the request object var request=http.request({ 'host': 'localhost', 'port': 80, 'path': '/', 'method': 'GET' }); //assign callbacks request.on('response', function(response) { console.log('Response status code:'+response.statusCode); response.on('data', function(data) { console.log('Body: '+data); }); }); ``` Now, to run the server, I type `node server.js` in the terminal or cmd prompt. & it runs successfully logs the message in the console & also outputs the response when I browse to 127.0.0.1:1337. But, how to I run client.js? I could not understand how to run the client side code.