Starting with Java™ SE Development Kit 11.0.9 (JDK 11.0.9), Oracle has introuduced a new feature: https://www.oracle.com/java/technologies/javase/11all-relnotes.html#JDK-8245417  Improve Certificate Chain HandlingA new system property, jdk.tls.maxHandshakeMessageSize, has been added to set the maximum allowed size for the handshake message in TLS/DTLS handshaking. The default value of the system property is 32768 (32 kilobytes). This might cause troubles when … Continue reading javax.net.ssl.SSLProtocolException — The size of the handshake message (xxxxx) exceeds the maximum allowed size (32768) →