UTF-8 characters in header in HTTPURLConnection Java

Question

urlConnection.setRequestProperty("content-type", "application/x-www-form-urlencoded");
urlConnection.setRequestProperty("something", "***UTF-8 characters here***");

In the server side (nodejs), something == ?????. How can we send those characters in header in UTF-8?

Answer 1

HTTP header values can be US-ASCII characters only.

You can URL-encode characters outside this range, thereby only sending allowed characters.