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  1. #1

    Exclamation LightStreamer Server Failing Upon A Connection

    Hey all! I have a localhost lightstreamer server set up and upon a single connection it gives me this message in the logs folder Lightstreamer/logs/Lightstreamer.txt:
    "Failed to manage IO task from [ip address]" . Then below that, it goes into detail:

    java.lang.NoClassDefFoundError: Could not initialize class com.lightstreamer.c.d.o
    at com.lightstreamer.c.d.b.j(b.java)
    at com.lightstreamer.c.d.b.a(b.java)
    at com.lightstreamer.c.a.b.ab.n(ab.java)
    at com.lightstreamer.c.a.b.q.b(q.java)
    at com.lightstreamer.c.a.b.o.run(o.java)

    I am running jdk-11 and just have no clue what class this even is or what it's dependent on. Any direction would be helpful. Thank you guys so much for your time!

    -Erik

  2. #2
    Administrator
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    Milan
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    956
    Hello. I confirm that, with Java 11, a few compatibility changes are needed.
    We are working on an update of Lightstreamer, but, unfortunately, this will take a few more days.
    Sorry for the delay.

    The main issue, which is also the one affecting you, is with the Javassist library, used internally.
    Other issues only involve the MPN subsystem and should not affect you, unless you have set <enable> under <mpn> as Y.

    So, for now, please update manually the Javassist library under the lib folder.
    It is in two places: under lib/core and under lib/mpn/hibernate.
    You should remove javassist-3.22.0-GA.jar and put javassist-3.23.1-GA.jar (the related zip files are there for licensing reasons and can be left). You can get the jar, for instance, from Maven.

  3. #3
    Thank you so much Dario for your reply! I will be sure to try that!

  4. #4
    Administrator
    Join Date
    Jul 2006
    Location
    Milan
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    956
    The update to Lightstreamer Server which ensures compatibility with Java 11 has been released.
    Please find 7.0.2 build 20181003 on the download page.

 

 

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