src/java.base/share/classes/java/net/ServerSocket.java

*** 74,87 ****
       * Are we using an older SocketImpl?
       */
      private boolean oldImpl = false;
  
      /**
!      * Package-private constructor to create a ServerSocket associated with
!      * the given SocketImpl.
       */
!     ServerSocket(SocketImpl impl) {
          this.impl = impl;
          impl.setServerSocket(this);
      }
  
      /**
--- 74,88 ----
       * Are we using an older SocketImpl?
       */
      private boolean oldImpl = false;
  
      /**
!      * Creates a server socket with a user-specified SocketImpl.
!      *
!      * @param      impl the user-specified SocketImpl
       */
!     protected ServerSocket(SocketImpl impl) {
          this.impl = impl;
          impl.setServerSocket(this);
      }
  
      /**
*** 988,997 ****
--- 989,999 ----
          return getImpl().getOption(name);
      }
  
      private static Set<SocketOption<?>> options;
      private static boolean optionsSet = false;
+     private static boolean rdmaOptionsSet = false;
  
      /**
       * Returns a set of the socket options supported by this server socket.
       *
       * This method will continue to return the set of options even after
*** 1002,1021 ****
       *
       * @since 9
       */
      public Set<SocketOption<?>> supportedOptions() {
          synchronized (ServerSocket.class) {
!             if (optionsSet) {
                  return options;
              }
              try {
                  SocketImpl impl = getImpl();
                  options = Collections.unmodifiableSet(impl.supportedOptions());
              } catch (IOException e) {
                  options = Collections.emptySet();
              }
              optionsSet = true;
              return options;
          }
      }
  
      static {
--- 1004,1031 ----
       *
       * @since 9
       */
      public Set<SocketOption<?>> supportedOptions() {
          synchronized (ServerSocket.class) {
!             String currentImpl = impl.getClass().getName();
!             boolean rdma = currentImpl.equals("rdma.ch.RdmaSocketImpl");
!             if ((rdma && rdmaOptionsSet) || (!rdma && optionsSet)) {
                  return options;
              }
              try {
                  SocketImpl impl = getImpl();
                  options = Collections.unmodifiableSet(impl.supportedOptions());
              } catch (IOException e) {
                  options = Collections.emptySet();
              }
+             if (rdma) {
+                 rdmaOptionsSet = true;
+                 optionsSet = false;
+             } else {
+                 rdmaOptionsSet = false;
                  optionsSet = true;
+             }
              return options;
          }
      }
  
      static {