http server

Node.js

const http = require('http')
function handler(request, response) {
  response.writeHead(200, { 'Content-type':'text/plain' })
  response.write('hello world')
  response.end()
}
const server = http.createServer(handler)
server.listen(8080)

Output

$ curl http://localhost:8080
hello world

Go

package main
import (
    "net/http"
)
func handler(w http.ResponseWriter, r *http.Request) {
    w.WriteHeader(200)
    w.Write([]byte("hello world"))
}
func main() {
    http.HandleFunc("/", handler)
    if err := http.ListenAndServe(":8080", nil); err != nil {
        panic(err)
    }
}

Output

$ curl http://localhost:8080
hello world