package main import ( "fmt" "io" "net/http" "unit.nginx.org/go" ) func handler(w http.ResponseWriter, r *http.Request) { var buf [32768]byte len, _ := r.Body.Read(buf[:]) w.Header().Add("Content-Length", fmt.Sprintf("%v", len)) io.WriteString(w, string(buf[:len])) } func main() { http.HandleFunc("/", handler) unit.ListenAndServe(":7080", nil) }