diff -r 634d8e14c172 -r 34d7cc00f87a src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/WebSocket.java
--- a/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/WebSocket.java	Sun Nov 05 17:32:13 2017 +0000
+++ b/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/WebSocket.java	Sun Nov 05 21:19:55 2017 +0000
@@ -192,8 +192,12 @@
          * <li> {@link InterruptedException} -
          *          if the operation was interrupted
          * <li> {@link SecurityException} -
-         *          if a security manager is set, and the caller does not
-         *          have a {@link java.net.URLPermission} for the WebSocket URI
+         *          If a security manager has been installed and it denies
+         *          {@link java.net.URLPermission access} to the WebSocket URI,
+         *          that was used to create this builder.
+         *          <a href="HttpRequest.html#securitychecks">Security checks</a>
+         *          contains more information relating to the security context
+         *          in which the the listener is invoked.
          * <li> {@link IllegalArgumentException} -
          *          if any of the additional {@link #header(String, String)
          *          headers} are illegal;