approve
public boolean approve(X509Certificate servercert,
              SSLCertificateApprovalCallback.ValidityStatus status)
This method is called when the server sends it's certificate to
 the client. 
 The 'status' argument passed to this method is constructed by
 NSS. It's a list of things 'wrong' with the certificate (which
 you can see by calling the status.getReasons() method. So,
 if there are problems regarding validity or trust of any of the
 certificates in the chain, you can present this info to the user.
 If there are no items in the Enumeration returned by getReasons(),
 you can assume that the certificate is trustworthy, and return
 true, or you can continue to make further tests of your own
 to determine trustworthiness.
- Specified by:
 
approve in interface SSLCertificateApprovalCallback 
- Parameters:
 servercert - the peer's server certificatestatus - the ValidityStatus object containing a list
            of all the problems with the cert 
- Returns:
 - true allow the connection to continue
         false terminate the connection (Expect an IOException
              on the outstanding read()/write() on the socket)