src/java.base/share/classes/sun/security/ssl/ExtensionType.java

@@ -103,9 +103,13 @@
 
     // extensions defined in RFC 6961
     static final ExtensionType EXT_STATUS_REQUEST_V2 =
             e(0x0011, "status_request_v2");      // IANA registry value: 17
 
+    // extensions defined in TLS 1.3
+    static final ExtensionType EXT_CERTIFICATE_AUTHORITIES =
+            e(0x002f, "certificate_authorities");// IANA registry value: 47
+
     // extensions defined in RFC 5746
     static final ExtensionType EXT_RENEGOTIATION_INFO =
             e(0xff01, "renegotiation_info");     // IANA registry value: 65281
 }