package main import ( "log" "net/http" ) func main() { responseBytes := []byte("Hello world from Go/012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789") http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { w.Write(responseBytes) }) err := http.ListenAndServe(":8080", nil) if err != nil { log.Fatal(err) } }