A simple "Hello World" web server written in Go.

simple-web-server.go

package main

import (
    "fmt"
    "log"
    "net"
    "time"
)

func main() {
    listener, err := net.Listen("tcp", ":8080")

    if err != nil {
        log.Fatal(err)
    }

    for {
        conn, err := listener.Accept()

        if err != nil {
            log.Fatal(err)
        }

        conn.Write([]byte("HTTP/1.1 200 OK\r\n"))
        conn.Write([]byte(fmt.Sprintf("Date: %s\r\n", time.Now().Format(time.RFC1123Z))))
        conn.Write([]byte("Content-Type: text/html\r\n"))
        conn.Write([]byte(fmt.Sprintf("Content-Length: %d\r\n", len("Hello, world!"))))
        conn.Write([]byte("\r\n"))
        conn.Write([]byte("Hello, world!"))
    }
}