[undertow-dev] Re: Non-control characters in cookie header rejected

We have Spring Boot v2.7.11 application with the undertow web server. I am having troubles understanding how cookie header is "treated" differently from other headers. So, if I make curl request with the following header: --header 'Cookie: foo=ä' I am getting following exception: j.l.IllegalArgumentException: UT000173: An invalid control character [195] was present in the cookie value or attribute On the other hand, if I pass any other header, i.e.: --header 'foo: ä', no exception however. What am I missing here? _______________________________________________ undertow-dev mailing list -- undertow-dev(a)lists.jboss.org To unsubscribe send an email to undertow-dev-leave(a)lists.jboss.org %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s