thanks you for your reply.
Lightstreamer server : 6.0
 Android platform versions:6.0
in accordance with you ,The logs are more detailed than before.

log info===

​30.May.18 09:30:53,664|INFO |lightstreamer.actions|main|User value changed to 1#D122886140030.May.18 09:30:53,665|INFO |lightstreamer.actions|main|Password value changed
30.May.18 09:30:53,666|INFO |lightstreamer.actions|main|Connect requested
Start listening to client events
30.May.18 09:30:53,670|DEBUG|lightstreamer.session|Session Thread <1>|Opening a new session and starting automatic reconnections
30.May.18 09:30:53,672|DEBUG|lightstreamer.session|Session Thread <1>|SessionManager state change: OFF -> STREAMING_WS
Client property changed: sessionId
30.May.18 09:30:53,710|INFO |lightstreamer.actions|Session Thread <1>|Session ID value changed to null
Client property changed: serverSocketName
30.May.18 09:30:53,710|INFO |lightstreamer.actions|Session Thread <1>|Server Socket Name value changed to null
Client property changed: clientIp
30.May.18 09:30:53,710|INFO |lightstreamer.actions|Session Thread <1>|Client IP value changed to null
Client property changed: serverInstanceAddress
30.May.18 09:30:53,710|INFO |lightstreamer.actions|Session Thread <1>|Server Instance Address value changed to null
Client property changed: realMaxBandwidth
30.May.18 09:30:53,710|INFO |lightstreamer.session|Session Thread <1>|Opening new session
30.May.18 09:30:53,713|INFO |lightstreamer.protocol|Session Thread <1>|Sending create_session request
30.May.18 09:30:53,714|DEBUG|lightstreamer.protocol|Session Thread <1>|create_session parameters: LS_polling=true&LS_cause=new.api&LS_polling_millis =0&LS_idle_millis=0&LS_cid=pcYgxptg4pkpW39AK3M4hwL ri8L6U9m&LS_adapter_set=TradingPlatformAdapterSet& LS_user=1%23D1228861400&LS_password=xsOLWp4kjUa1bV b9NTcx4XwvVy2lIskJv0O5iRJXY80&
30.May.18 09:30:53,714|DEBUG|lightstreamer.stream|Session Thread <1>|HTTP transport sending: create_session LS_polling=true&LS_cause=new.api&LS_polling_millis =0&LS_idle_millis=0&LS_cid=pcYgxptg4pkpW39AK3M4hwL ri8L6U9m&LS_adapter_set=TradingPlatformAdapterSet& LS_user=1%23D1228861400&LS_password=xsOLWp4kjUa1bV b9NTcx4XwvVy2lIskJv0O5iRJXY80&
30.May.18 09:30:53,715|DEBUG|lightstreamer.stream|Session Thread <1>|Created HttpListener[] 1
30.May.18 09:30:53,844|DEBUG|lightstreamer.stream|Session Thread <1>|Request header: Host = pushuat009.sfs-uat.com
30.May.18 09:30:53,844|DEBUG|lightstreamer.stream|Session Thread <1>|Request header: user-agent = javase_client 4.0.0 build 1282
30.May.18 09:30:53,844|DEBUG|lightstreamer.stream|Session Thread <1>|Request header: content-type = application/x-www-form-urlencoded
30.May.18 09:30:53,844|DEBUG|lightstreamer.stream|Session Thread <1>|Request header: content-length = 232
30.May.18 09:30:53,851|DEBUG|lightstreamer.netty.pool|Sessio n Thread <1>|Getting a new channel
30.May.18 09:30:53,851|DEBUG|lightstreamer.netty.pool|Sessio n Thread <1>|Creating new ChannePoolWrapper
30.May.18 09:30:53,915|DEBUG|lightstreamer.netty.pool|Sessio n Thread <1>|ChannelPoolWrapper[1] created and initialized
30.May.18 09:30:53,916|DEBUG|lightstreamer.netty.pool|Sessio n Thread <1>|New pool created. Remote address: pushuat009.sfs-uat.com/178.33.0.247:444
30.May.18 09:30:54,114|DEBUG|lightstreamer.session|Session Thread <1>|Session state change: OFF -> CREATING
30.May.18 09:30:54,115|DEBUG|lightstreamer.session|Session Thread <1>|Status timeout in 4000
LSLightstreamer START CONNECT
30.May.18 09:30:54,115|DEBUG|lightstreamer.session|Session Thread <1>|WebSocket early opening
30.May.18 09:30:54,116|DEBUG|lightstreamer.stream|Session Thread <1>|WebSocket transport: NOT_CONNECTED
30.May.18 09:30:54,118|DEBUG|lightstreamer.stream|Session Thread <1>|WebSocket connecting [295acc9a]
30.May.18 09:30:54,397|DEBUG|lightstreamer.stream|Session Thread <1>|WebSocket transport: CONNECTING
30.May.18 09:30:54,423|DEBUG|lightstreamer.netty.pool|Netty HTTP Thread 1|Channel created [id: 0xe06a6cad]
30.May.18 09:30:54,790|DEBUG|lightstreamer.stream|Netty HTTP Thread 2|Writing data
30.May.18 09:30:54,808|INFO |lightstreamer.stream|Netty HTTP Thread 1|Connection opened
30.May.18 09:30:55,119|ERROR|lightstreamer.stream|Netty HTTP Thread 1|HTTP transport error
io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
at io.netty.handler.codec.ByteToMessageDecoder.callDe code(ByteToMessageDecoder.java:442)
at io.netty.handler.codec.ByteToMessageDecoder.channe lRead(ByteToMessageDecoder.java:248)
at io.netty.channel.AbstractChannelHandlerContext.inv okeChannelRead(AbstractChannelHandlerContext.java: 373)
at io.netty.channel.AbstractChannelHandlerContext.inv okeChannelRead(AbstractChannelHandlerContext.java: 359)
at io.netty.channel.AbstractChannelHandlerContext.fir eChannelRead(AbstractChannelHandlerContext.java:35 1)
at io.netty.channel.DefaultChannelPipeline$HeadContex t.channelRead(DefaultChannelPipeline.java:1334)
at io.netty.channel.AbstractChannelHandlerContext.inv okeChannelRead(AbstractChannelHandlerContext.java: 373)
at io.netty.channel.AbstractChannelHandlerContext.inv okeChannelRead(AbstractChannelHandlerContext.java: 359)
at io.netty.channel.DefaultChannelPipeline.fireChanne lRead(DefaultChannelPipeline.java:926)
at io.netty.channel.nio.AbstractNioByteChannel$NioByt eUnsafe.read(AbstractNioByteChannel.java:129)
at io.netty.channel.nio.NioEventLoop.processSelectedK ey(NioEventLoop.java:651)
at io.netty.channel.nio.NioEventLoop.processSelectedK eysOptimized(NioEventLoop.java:574)
at io.netty.channel.nio.NioEventLoop.processSelectedK eys(NioEventLoop.java:488)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop .java:450)
at io.netty.util.concurrent.SingleThreadEventExecutor $5.run(SingleThreadEventExecutor.java:873)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
at sun.security.ssl.Handshaker.checkThrown(Handshaker .java:1431)
at sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSL EngineImpl.java:535)
at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEn gineImpl.java:813)
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImp l.java:781)
at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler. java:1097)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler. java:968)
at io.netty.handler.ssl.SslHandler.decode(SslHandler. java:902)
at io.netty.handler.codec.ByteToMessageDecoder.callDe code(ByteToMessageDecoder.java:411)
... 15 more
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
at sun.security.ssl.Alerts.getSSLException(Alerts.jav a:192)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl .java:1728)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.jav a:304)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.jav a:296)
at sun.security.ssl.ClientHandshaker.serverCertificat e(ClientHandshaker.java:1509)
at sun.security.ssl.ClientHandshaker.processMessage(C lientHandshaker.java:216)
at sun.security.ssl.Handshaker.processLoop(Handshaker .java:979)
at sun.security.ssl.Handshaker$1.run(Handshaker.java: 919)
at sun.security.ssl.Handshaker$1.run(Handshaker.java: 916)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.ssl.Handshaker$DelegatedTask.run(Hand shaker.java:1369)
at io.netty.handler.ssl.SslHandler.runDelegatedTasks( SslHandler.java:1123)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler. java:1008)
... 17 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXV alidator.java:387)
at sun.security.validator.PKIXValidator.engineValidat e(PKIXValidator.java:292)
at sun.security.validator.Validator.validate(Validato r.java:260)
at sun.security.ssl.X509TrustManagerImpl.validate(X50 9TrustManagerImpl.java:324)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted (X509TrustManagerImpl.java:281)
at sun.security.ssl.X509TrustManagerImpl.checkServerT rusted(X509TrustManagerImpl.java:136)
at sun.security.ssl.ClientHandshaker.serverCertificat e(ClientHandshaker.java:1496)
... 25 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder. build(SunCertPathBuilder.java:146)
at sun.security.provider.certpath.SunCertPathBuilder. engineBuild(SunCertPathBuilder.java:131)
at java.security.cert.CertPathBuilder.build(CertPathB uilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXV alidator.java:382)
... 31 more
30.May.18 09:30:55,122|ERROR|lightstreamer.session|Session Thread <1>|Error event while CREATING