package main
import (
"fmt"
"log"
"net/http"
"os"
)
func main() {
// register hello function to handle all requests
mux := http.NewServeMux()
mux.HandleFunc("/", hello)
// use PORT environment variable, or default to 8080
port := os.Getenv("PORT")
if port == "" {
port = "8080"
}
// start the web server on port and accept requests
log.Printf("Server listening on port %s", port)
log.Fatal(http.ListenAndServe(":"+port, mux))
}
// hello responds to the request with a plain-text "Hello, world" message.
func hello(w http.ResponseWriter, r *http.Request) {
log.Printf("Serving request: %s", r.URL.Path)
host, _ := os.Hostname()
fmt.Fprintf(w, "Hello, world!\n")
fmt.Fprintf(w, "Version: 1.0.0\n")
fmt.Fprintf(w, "Hostname: %s\n", host)
}