Hi, JDK-8254631 is backported to 11.0.12-oracle. I'd like to backport it for parity. It applies cleanly, but the javadoc parts don't compile with 11u. They are not compatible with 11u and are documented to be dropped in the CSR (linked below). As also documented in the CSR, the old behavior can get restored by specifying the property: jdk.tls.alpnCharset=UTF-8
Bug: https://bugs.openjdk.java.net/browse/JDK-8254631 Original change: https://git.openjdk.java.net/jdk/commit/fe5cccc1 11u CSR: https://bugs.openjdk.java.net/browse/JDK-8264177 11u backport: http://cr.openjdk.java.net/~mdoerr/8254631_ALPN_11u/webrev.00/ Please review. Best regards, Martin