Socket.setTcpNoDelay & Socket.setKeepAlive are no working as expected on Windows Vista beta 2 (build 5308).

You can test this easily by calling Socket.setTcpNoDelay() followed by Socket.getTcpNoDelay(). The value returned from the get will not match that passed to the set, e.g
   ..\bin\java TestTcpNoDelay
Get TCP_NODELAY = true
Set TCP_NODELAY to false
Get TCP_NODELAY = true

This is a native vista issue and can be reproduced by a simple native testcase (attached, TestSOKEEPALIVE.c, TestTCPNODELAY). This needs to be fixed in the vista platform.
 Native Tests show:
   T:\6358574>TestTCPNODELAY
Get TCP_NODELAY = 4198656
Set TCP_NODELAY = 1
Get TCP_NODELAY = 4198657
  
   T:\6358574>TestSOKEEPALIVE
        Get SO_KEEPALIVE = 5120
        Set SO_KEEPALIVE = 1
        Get SO_KEEPALIVE = 5121

This is causing the following jck failures (7):
  api/java_net/Socket/descriptions.html#setTcpNoDelay
  api/java_net/Socket/descriptions.html#setKeepAlive
  api/javax_net/SocketFactory/index.html#SocketFactory001[SocketFactory001]
  api/javax_net/SocketFactory/index.html#SocketFactory002[SocketFactory002]
  api/javax_net/SocketFactory/index.html#SocketFactory003[SocketFactory003]
  api/javax_net/SocketFactory/index.html#SocketFactory004[SocketFactory004]
  api/javax_net/SocketFactory/index.html#SocketFactory005[SocketFactory005]