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From "Ketan (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NET-426) FTPS: Hook to customize _openDataConnection_ SSLSocket before startHandshake() is called
Date Tue, 25 Oct 2011 16:56:32 GMT

    [ https://issues.apache.org/jira/browse/NET-426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135229#comment-13135229
] 

Ketan commented on NET-426:
---------------------------

Here is code snippet I was playing with.  I had this executed before data connection handshake
starting. Note this is for SunJSSE provider since I had Sun's JVM installed:

	SSLSocket sslControlSocket = (SSLSocket) controlConnectionSocket;
	String host = "host.used.to.connect.to.socket";
	try {
		SSLSession sess = sslControlSocket.getSession();
		SSLSessionContext sessions = sess.getSessionContext();
		// SunJSSE 1.6 specific code
		Field cache = sessions.getClass().getDeclaredField(
			"sessionHostPortCache");
		cache.setAccessible(true);
		Object c = cache.get(sessions);
		String key = (host + ":" + String.valueOf(socket.getPort()))
			.toLowerCase();
		// Class<?> cc = Class.forName("sun.security.util.Cache");
		Class<?> cc = c.getClass();
		cc.getDeclaredMethod("put", Object.class, Object.class).invoke(
				c, key, sess);
	} catch (Exception e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
                
> FTPS: Hook to customize _openDataConnection_ SSLSocket before startHandshake() is called
> ----------------------------------------------------------------------------------------
>
>                 Key: NET-426
>                 URL: https://issues.apache.org/jira/browse/NET-426
>             Project: Commons Net
>          Issue Type: Bug
>          Components: FTP
>    Affects Versions: 3.0.1
>            Reporter: Ketan
>            Priority: Critical
>         Attachments: FTPSClient.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Currently in FTPSClient class, there is protected _openDataConnection_ method, which
create SSLSocket for data connection.  But there is no hook to customize the SSLSocket before
startHandshake is called.  
> I need to know the remote host ip and port, which i can get for socket, and do custom
setup to try to reuse SSL sessions from control connection socket.  Since the socket factory
uses createSocket() method, I can't just use custom socket factory since I don't know the
host and port.  I can't just override the _openDataConnection_() method in my class since
that will call the startHandshake().  
> So it would be nice if you can provide hook, much like _connectAction_(), but for data
connection before handshake is started.  You can pass the new data socket as argument to this
hook method so one can get remote host and port information.  

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