Results 1 to 2 of 2
  1. #1
    Member
    Join Date
    Jan 2011
    Location
    Redhill
    Posts
    9

    Switching Lightstreamer v3 to SSL with HTML client deployed on web server

    I have managed to get Lightstreamer SSL to work with an HTML+Javascript client served from apache2. I'd like to sum up here the pitfalls, it may save someone some time.

    1. Use the eval version of Lightstreamer, not Moderato, as Moderato does not support SSL. It is there all over in the docs, but when you have been using Moderato for a while, and you want to switch to SSL as an experiment, you might not go back all the way to the docs Licence the eval version and set it up to work in Vivace mode in lightstreamer_conf.xml. Enable https_server (moderato's config does not have https_server)

    2. Use https to get your client HTML+Javascript page. If you don't, you will get a java exception on your server console:

    Code:
    14.Jul.11 17:18:56,776 <ERROR> Handshake error on Lightstreamer HTTPS Server
    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
    	at com.sun.net.ssl.internal.ssl.EngineInputRecord.bytesInCompletePacket(EngineInputRecord.java:152)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:798)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:713)
    	at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:607)
    	at com.lightstreamer.e.a.t.a(t.java)
    	at com.lightstreamer.e.a.m.a(m.java)
    	at com.lightstreamer.e.a.a.g.b(g.java)
    	at com.lightstreamer.e.a.a.n.e(n.java)
    	at com.lightstreamer.e.a.a.n.run(n.java)
    This may happen if your client page is deployed on a web server, and that web server is not using https (yet). You need to setup your web server to serve the client pages via https.

    3. Set up your Lightstreamer client to connect to the port the Lightstreamer HTTPS service is running on. You can do that by using:

    lsEngine.connection.setLSPort("8443");

    This has to be the same port as the one set in the LS config file.

    4. Open the client URL via https and store the permanent security exception in your browser.

    5. Open the Lightstreamer push url via https and using the port number setup in the config file (https://push.example.com:8443), store the security exception in the browser. If you don't, the client will not connect and the server log will show the following java exception:
    Code:
    14.Jul.11 17:19:14,833 <ERROR> Handshake error on Lightstreamer HTTPS Server
    javax.net.ssl.SSLException: Received fatal alert: bad_certificate
    	at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:190)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1429)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1397)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.recvAlert(SSLEngineImpl.java:1563)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.readRecord(SSLEngineImpl.java:1023)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:837)
    	at com.sun.net.ssl.internal.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:713)
    	at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:607)
    	at com.lightstreamer.e.a.t.a(t.java)
    	at com.lightstreamer.e.a.m.a(m.java)
    	at com.lightstreamer.e.a.a.g.b(g.java)
    	at com.lightstreamer.e.a.a.n.e(n.java)
    	at com.lightstreamer.e.a.a.n.run(n.java)
    I did not find anything on the forums about the bad_certificate exception, hence this post, hope someone will find it useful, and I hope Lightstreamer folks don't mind .

  2. #2
    Administrator
    Join Date
    Jul 2006
    Location
    Milan, Italy
    Posts
    517

    Emese,

    Well done! Thanks for the post

    -Alessandro

 

 

Similar Threads

  1. Increase Timeout for switching to samrt polling
    By afshin_a in forum Client APIs
    Replies: 6
    Last Post: August 27th, 2011, 05:43 AM
  2. LS4 with SSL, html client problem
    By jonasby1 in forum General
    Replies: 2
    Last Post: August 4th, 2011, 06:14 PM
  3. How LS server uses the deployed adapter(s)?
    By mnenchev in forum Adapter APIs
    Replies: 5
    Last Post: September 17th, 2009, 10:11 AM
  4. HTML Data
    By pyuvienco in forum Client APIs
    Replies: 1
    Last Post: July 2nd, 2008, 09:20 AM
  5. Alpha Theory has deployed Lightstreamer
    By Alessandro in forum General
    Replies: 0
    Last Post: January 25th, 2008, 11:19 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT +1. The time now is 10:55 AM.