Error using newer dotnet adapter library with old LS server
We're in the process of updating our LS server to the latest version (currently on 5.1.1 build 1623.2), but to do that we need to first update our dotnet adapters to the newer LS adapter library (as the one we were using doesn't work with the new LS server). Because our site can't be down we want to do this in 2 steps where first we update our adapters to the new version, and then subsequently we update our LS servers to the new version. But we're getting errors when using the new adapter library with the older LS server. Errors are:
13-Jul-19 16:02:11,331|WARN |ghtstreamerLogger.connections.ssl|NIO READ SELECTOR 2 |TLS/SSL read error: Insufficient buffer remaining for AEAD cipher fragment (2). Needs to be more than or equal to IV size (8) + tag size (16) on 10.40.10.69:61269.
The adapter library we're using is: 1.7.0.0 DotNetAdapter_N2.dll
I understand that we're running a really old version of LS server, but I can't seem to find any information that indicates that the newer adapter library wouldn't be compatible.
Even running our adapters with the new adapter library and the new LS server we get these errors:
15.Jul.19 17:39:20,886 <ERROR> Got fatal error from the inner Proxy Metadata Adapter
com.lightstreamer.adapters.proxy.RemotingException : Unexpected end of reply stream reached
at com.lightstreamer.adapters.proxy.request_reply.Not ifyReceiver.run(NotifyReceiver.java:110)
Caused by: java.io.EOFException: null
... 1 common frames omitted