notifyNewSession getting called continuosuly in a session

[loksurya]

So I am new to lightstreamer trying it on my local computer. What I observed while
debugging is it happens that notifyNewSession, notifySessionClose is getting called continuously in a session even if there is no internet fluctuation. My assumption after going through documents is when the client gets connected to server notifyNewSession will be called and when client ask to disconnect notifySessionClose will be called. It will keep connection active through the session. I am confused why it is behaving like this. Have I missed something in doc ? Or is it normal behaviour that it will continuously connect and disconnect even on a good internet connection.

[DarioCrivelli]

In fact, notifyNewSession and notifySessionClose are not supposed to be invoked during the life of a session.
Something else must be happening, such as another client struggling to connect.
If you have left the factory log configuration, the log produced during the session life should show that.

[loksurya]

Thanks got it.

[loksurya]

Also one more issue I am facing today, while trying to deploy it locally, it was running fine yesterday.
But today I am facing this error continuosuly

|Unexpected error while managing the request:
java.lang.NoSuchMethodError: com.lightstreamer.interfaces.metadata.TableInfo.<i nit>(ILcom/lightstreamer/interfaces/metadata/Mode;Ljava/lang/String;Ljava/lang/String;IILjava/lang/StringV
at com.lightstreamer.i.b.c.<init>(c.java)
at com.lightstreamer.k.c.g.h(g.java)
at com.lightstreamer.k.c.f.f(f.java)
at com.lightstreamer.k.a.aa.a(aa.java)
at com.lightstreamer.k.a.z.b(z.java)
at com.lightstreamer.g.aw.a(aw.java)
at com.lightstreamer.g.c.i.a(i.java)
at com.lightstreamer.g.r.a(r.java)
at com.lightstreamer.g.r.a(r.java)
at com.lightstreamer.g.r.b(r.java)
at com.lightstreamer.g.r.a(r.java)
at com.lightstreamer.g.a6.a(a6.java)
at com.lightstreamer.e.a.ab.a(ab.java)
at com.lightstreamer.e.a.p.a(p.java)
at com.lightstreamer.e.a.p.a(p.java)
at com.lightstreamer.e.a.k.d(k.java)
at com.lightstreamer.a.a.m.b(m.java)
at com.lightstreamer.a.a.m.run(m.java)
at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624)
at com.lightstreamer.a.a.d.c(d.java)
at com.lightstreamer.a.a.e.c(e.java)
at com.lightstreamer.a.a.b.run(b.java)

What could be possible reason?

[DarioCrivelli]

The signature is that of a previous version.
A possible reason for the error is that the Server in use is version 7.0.x or earlier and the adapter interface jar is for a later Server version.
Obviously, we assume that some change has happened involving the classpath.
For instance, you may have downloaded the latest version of the adapter interface jar from maven or from github and you have placed it before the older at Lightstreamer\lib\ls-adapter-interface.jar.