src/share/classes/sun/security/ssl/SSLHandshake.java

rev 14411 : 8228757: Fail fast if the handshake type is unknown
Reviewed-by: jnimeh

*** 476,485 ****
--- 476,495 ----
          }
  
          return "UNKNOWN-HANDSHAKE-MESSAGE(" + id + ")";
      }
  
+     static boolean isKnown(byte id) {
+         for (SSLHandshake hs : SSLHandshake.values()) {
+             if (hs.id == id && id != NOT_APPLICABLE.id) {
+                 return true;
+             }
+         }
+ 
+         return false;
+     }
+ 
      static final void kickstart(HandshakeContext context) throws IOException {
          if (context instanceof ClientHandshakeContext) {
              // For initial handshaking, including session resumption,
              // ClientHello message is used as the kickstart message.
              //