DISCONNECTED:WILL-RETRY on the Android Client

syg5201314

HI,I've got a problem on the android platform.

<dependencies>
<dependency>
<groupId> com.lightstreamer</groupId>
<artifactId> ls-javase-client</artifactId>
<version> 3.0.0-b1</version>
</dependency>
</dependencies>LightstreamerClient client = new LightstreamerClient("HOST", "AdapterSet");
client.connectionDetails.setUser("");
client.connectionDetails.setPassword("");
client.addListener(clientListener);
client.connect();

log info===

Start listening to client events
Client property changed: sessionId
Client property changed: serverSocketName
Client property changed: serverInstanceAddress
LSLightstreamer CONNECTING
DISCONNECTED:WILL-RETRY
Client property changed: sessionId
Client property changed: serverSocketName
Client property changed: serverInstanceAddress
LSLightstreamer CONNECTING
DISCONNECTED:WILL-RETRY
Client property changed: sessionId
Client property changed: serverSocketName
Client property changed: serverInstanceAddress
LSLightstreamer CONNECTING
====
I need your help

Alessandro.Carioni

Hi,

Which Lightstreamer server and Android platform versions are you using?

Further attach a copy of the server log and of the client log.

The client logger is enabled putting the following statements in the initialization of you app:

SystemOutLogProvider prov = new SystemOutLogProvider();
LightstreamerClient.setLoggerProvider(prov);

You must also include in the classpath the libraries 'com.lightstreamer:ls-log-adapter-java:1.0.1'and 'com.lightstreamer:java-system-out-log:1.0.2' available on our Maven repository.

Please consider also the option of using a more recent version of the client. The last released is 4.0.9 and requires server 7.0.

syg5201314

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=pcYgxptg4pkpW39AK3M4hwLri8L6U9m&LS_adapter_set=TradingPlatformAdapterSet&LS_user=1%23D1228861400&LS_password=xsOLWp4kjUa1bVb9NTcx4XwvVy2lIskJv0O5iRJXY80&
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=pcYgxptg4pkpW39AK3M4hwLri8L6U9m&LS_adapter_set=TradingPlatformAdapterSet&LS_user=1%23D1228861400&LS_password=xsOLWp4kjUa1bVb9NTcx4XwvVy2lIskJv0O5iRJXY80&
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|Session Thread <1>|Getting a new channel
30.May.18 09:30:53,851|DEBUG|lightstreamer.netty.pool|Session Thread <1>|Creating new ChannePoolWrapper
30.May.18 09:30:53,915|DEBUG|lightstreamer.netty.pool|Session Thread <1>|ChannelPoolWrapper[1] created and initialized
30.May.18 09:30:53,916|DEBUG|lightstreamer.netty.pool|Session 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.callDecode(ByteToMessageDecoder.java:442)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:248)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:373)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:351)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:373)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:129)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:651)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:574)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(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(SSLEngineImpl.java:535)
at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:813)
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.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.callDecode(ByteToMessageDecoder.java:411)
... 15 more
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1728)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:304)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1509)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.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(Handshaker.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.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)
at sun.security.validator.Validator.validate(Validator.java:260)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:281)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:136)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1496)
... 25 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: 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(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
... 31 more
30.May.18 09:30:55,122|ERROR|lightstreamer.session|Session Thread <1>|Error event while CREATING

syg5201314

Is this a certificate problem? Where can I get the certificate? How do I import it into LightStreamer? Why is there no problem with IOS with the same code?

syg5201314

Any help would be greatly appreciated.
Thanks in advance.

Alessandro.Carioni

Hi,

The client cannot connect because you are using a Java SE client. You should instead use a version specific to Android.
According to the server version, you have two possibilities:

1) If your server version is 6.0.0 or lower you must use the client library included in the server distribution in the folder DOCS-SDKs/sdk_client_androidor download it from this link .

2) If your server is 6.0.1 or above, you can get the library from our public Maven repository. For example to download the last version, your pom.xml should specify the following dependency:
<dependency>
<groupId>com.lightstreamer</groupId>
<artifactId>ls-android-client</artifactId>
<version>4.0.9</version>
</dependency>
Further always check you are using the last client version compatible with your server looking at the changelog .

syg5201314

Thanks for your reply. I have the same problem with ls-android-lib on the Android platform. So the lib using Javase is also for testing purposes.
Could you check the information about Log?

syg5201314

use ls-android-client:4.0.9 lib log info
log info====
30.May.18 15:39:51,247|INFO |lightstreamer.actions|main|User value changed to 1#D1228861400
30.May.18 15:39:51,249|INFO |lightstreamer.actions|main|Password value changed
30.May.18 15:39:51,254|INFO |lightstreamer.actions|main|Connect requested
Start listening to client events
30.May.18 15:39:51,276|DEBUG|lightstreamer.session|Session Thread <1>|Opening a new session and starting automatic reconnections
30.May.18 15:39:51,281|DEBUG|lightstreamer.session|Session Thread <1>|SessionManager state change: OFF -> STREAMING_WS
30.May.18 15:39:51,282|ERROR|lightstreamer.threads|Session Thread <1>|Uncaught exception
java.lang.NoClassDefFoundError: io/netty/handler/codec/http/FullHttpRequest
at com.lightstreamer.client.transport.providers.netty.NettyHttpProviderFactory.getInstance(NettyHttpProviderFactory.java:22)
at com.lightstreamer.client.transport.providers.netty.NettyHttpProviderFactory.getInstance(NettyHttpProviderFactory.java:18)
at com.lightstreamer.client.session.SessionFactory.createNewSession(SessionFactory.java:38)
at com.lightstreamer.client.session.SessionManager.prepareNewSessionInstance(SessionManager.java:291)
at com.lightstreamer.client.session.SessionManager.createSession(SessionManager.java:280)
at com.lightstreamer.client.LightstreamerEngine$1.run(LightstreamerEngine.java:98)
at com.lightstreamer.client.session.SessionThread$1.run(SessionThread.java:155)
at com.lightstreamer.util.threads.LoggingRunnable.run(LoggingRunnable.java:20)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at com.lightstreamer.util.threads.JoinableSchedulerPoolExecutor$1$1.run(JoinableSchedulerPoolExecutor.java:33)
Caused by: java.lang.ClassNotFoundException: io.netty.handler.codec.http.FullHttpRequest
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

syg5201314

hi , i use android client , print log.

Log info ======

I/System.out: /lightstreamer/create_session.txt?LS_protocol=TLCP-2.1.0
LS_polling=true&LS_cause=new.api&LS_polling_millis=0&LS_idle_millis=0&LS_cid=gpGxttxdysogQz2FJ4LG3dXoqoH5Q9u&LS_adapter_set=TradingPlatformAdapterSet&LS_user=1#SHANYUGANG&LS_password=GBare-yp20OpmkhcFVTg_70iAl7edxkbqRVhc9zmIzY&
I/System.out: 30.5月.18 16:59:20,112|DEBUG|lightstreamer.stream|Netty Thread 3|HTTP transport sending [cd1a47e3]: /lightstreamer/create_session.txt?LS_protocol=TLCP-2.1.0
LS_polling=true&LS_cause=new.api&LS_polling_millis=0&LS_idle_millis=0&LS_cid=gpGxttxdysogQz2FJ4LG3dXoqoH5Q9u&LS_adapter_set=TradingPlatformAdapterSet&LS_user=1#SHANYUGANG&LS_password=GBare-yp20OpmkhcFVTg_70iAl7edxkbqRVhc9zmIzY&
I/System.out: 30.5月.18 16:59:20,114|DEBUG|lightstreamer.netty.pool|Netty Thread 1|HTTP channel active [cd1a47e3]
I/System.out: 30.5月.18 16:59:20,120|DEBUG|lightstreamer.netty.pool|Netty Thread 4|ChannelUpgradeFuture state change [4d283dd1]: CONNECTING -> CONNECTION_OK
I/System.out: 30.5月.18 16:59:20,122|DEBUG|lightstreamer.netty.pool|Netty Thread 2|HTTP channel active [4d283dd1]
I/System.out: 30.5月.18 16:59:20,127|DEBUG|lightstreamer.netty.pool|Netty Thread 2|WS channel handshake [4d283dd1]
I/System.out: 30.5月.18 16:59:21,083|DEBUG|lightstreamer.stream|Netty Thread 1|Response status: 200
I/System.out: 30.5月.18 16:59:21,084|DEBUG|lightstreamer.stream|Netty Thread 1|HTTP transport receiving [cd1a47e3]:
CONERR,65,Unsupported protocol version: TLCP-2.1.0

what protocol is TLCP-2.1.0 , please?

syg5201314

syg5201314

Alessandro.Carioni

Hi,

You are using a client version not supported by your server.
Please, check the changelog (https://www.lightstreamer.com/repo/maven/com/lightstreamer/ls-android-client/4.0.9/CHANGELOG.HTML) and make sure that the client you choose has the statement “Compatible with Lightstreamer Server since XXX” where XXX is equal to or lower than you server version.

The exact server version is printed to the console during the startup. You should search a string like “Lightstreamer Server 7.0.0 build 1860”.

On on the Demos page of our site (https://demos.lightstreamer.com/) you can find examples of Android application. For instance see this demo (https://github.com/Lightstreamer/Lightstreamer-example-AdvStockList-client-android) for a step by step tutorial.