package wv import ( "bytes" "io" "net/http" ) func GetCertData(client *http.Client, licenseURL string) ([]byte, error) { response, err := client.Post(licenseURL, "application/x-www-form-urlencoded", bytes.NewReader([]byte{0x08, 0x04})) if err != nil { return nil, err } defer response.Body.Close() return io.ReadAll(response.Body) }