Ping
To create a ping program in Go, you need to create a few files: main.go for the main logic, and optionally, a ping.go file for the ping functionality. Here is a step-by-step guide:
Step 1: Initialize the Go Module
First, create a new directory for your project and initialize the Go module.
mkdir ping
cd ping
go mod init github.com/username/ping
mkdir pingmod
Step 2: Create the ping.go File
Create a pingmod/ping.go file to handle the ping functionality.
// ping.go
package ping
import (
"net"
"time"
)
// Ping sends a ping request to the specified address and returns the duration and any error encountered.
func Ping(address string) (time.Duration, error) {
start := time.Now()
conn, err := net.DialTimeout("ip4:icmp", address, time.Second*2)
if err != nil {
return 0, err
}
defer conn.Close()
duration := time.Since(start)
return duration, nil
}
Step 3: Create the main.go File
Create a main.go file to use the ping functionality.
// main.go
package main
import (
"fmt"
"os"
"github.com/username/ping/pingmod"
)
func main() {
if len(os.Args) != 2 {
fmt.Println("Usage: ping <address>")
os.Exit(1)
}
address := os.Args[1]
duration, err := ping.Ping(address)
if err != nil {
fmt.Printf("Ping to %s failed: %v\n", address, err)
os.Exit(1)
}
fmt.Printf("Ping to %s: %v\n", address, duration)
}
Step 4: Run the Program
Run the program using the go run command.
go run main.go google.com
This will output the ping duration to the specified address.
Last modified: 08 January 2025