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=gpGxttxdysogQz2FJ4LG3dX oqoH5Q9u&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=gpGxttxdysogQz2FJ4LG3dX oqoH5Q9u&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?