golang-http-header/main.go

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711 B
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2023-11-22 12:53:44 +00:00
package main
import (
"fmt"
"net/http"
"os"
)
func handler(w http.ResponseWriter, r *http.Request) {
// Get the hostname of the server
hostname, err := os.Hostname()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// Set the hostname in the response header
w.Header().Set("Server-Hostname", hostname)
// Send a response
fmt.Fprintf(w, "Hello! This is server: %s\n", hostname)
}
func main() {
// Define the handler function for incoming requests
http.HandleFunc("/", handler)
// Start the HTTP server on port 8080
fmt.Println("Server listening on :8080...")
err := http.ListenAndServe(":8080", nil)
if err != nil {
fmt.Println("Error:", err)
}
}