scanner.go

package main

import (
    "fmt"
    "net"
)

func main() {
    for i := 1; i <= 1024; i++ {
        address := fmt.Sprintf("scanme.nmap.org:%d", i)
        conn, err := net.Dial("tcp", address)
        if err != nil {
            continue
        }
        conn.Close()
        fmt.Println("Port %d is open.\n", i)
    }
}