According to the spec, SSL.setUseClientMode() should throw an
IllegalArgumentException if invoked after handshaking has started
on a secure connection. The attached example uses the SunJSSE
provider and cycles through a list of protocols, attempting to
change the client mode once handshaking has started. Note that
generally the first iteration is successful and we see the
expected exception, but subsequently we do not. The
example code uses to "TLS" protocol twice, once successfully
and once not.

To reproduce, use the example and keystore, or alter the example
to use another keystore:

% java -version
java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
% java myExample
testing provider SunJSSE, algorithm TLS
succeeded, we can't set the client mode
testing provider SunJSSE, algorithm SSL
failed, no IllegalArgumentException!
testing provider SunJSSE, algorithm SSLv3
failed, no IllegalArgumentException!
testing provider SunJSSE, algorithm TLS
failed, no IllegalArgumentException!
% uname -a
Linux dickdale 2.6.5-7.108-default #1 Wed Aug 25 13:34:40 UTC 2004 i686 i686 i386 GNU/Linux
%

###@###.### 2005-1-31 18:43:51 GMT