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Pavel Tupitsyn commented on IGNITE-12415: ----------------------------------------- Fixed as part of IGNITE-12387 (compatibility tests added there too). > .NET: Thin client does not connect to old server nodes > ------------------------------------------------------ > > Key: IGNITE-12415 > URL: https://issues.apache.org/jira/browse/IGNITE-12415 > Project: Ignite > Issue Type: Bug > Components: platforms > Affects Versions: 2.8 > Reporter: Pavel Tupitsyn > Assignee: Pavel Tupitsyn > Priority: Blocker > Labels: .NET > Fix For: 2.8 > > > Exception when trying to connect .NET Thin Client from current master > (https://www.nuget.org/packages/Apache.Ignite/2.8.0-alpha20191203) to the > 2.7.6 server node: > {code} > Unhandled exception. Apache.Ignite.Core.Client.IgniteClientException: Client > handshake failed: 'Unsupported version.'. Client version: 1.6.0. Server > version: 1.2.0 > at > Apache.Ignite.Core.Impl.Client.ClientSocket.Handshake(IgniteClientConfiguration > clientConfiguration, ClientProtocolVersion version) > at > Apache.Ignite.Core.Impl.Client.ClientSocket..ctor(IgniteClientConfiguration > clientConfiguration, EndPoint endPoint, String host, Nullable`1 version, > Action`1 topVerCallback) > at Apache.Ignite.Core.Impl.Client.ClientFailoverSocket.Connect() > at > Apache.Ignite.Core.Impl.Client.ClientFailoverSocket..ctor(IgniteClientConfiguration > config, Marshaller marsh) > at > Apache.Ignite.Core.Impl.Client.IgniteClient..ctor(IgniteClientConfiguration > clientConfiguration) > at Apache.Ignite.Core.Ignition.StartClient(IgniteClientConfiguration > clientConfiguration) > at ConsoleApp2.Program.Main(String[] args) in > /home/pavel/RiderProjects/ConsoleApp2/ConsoleApp2/Program.cs:line 14 > [StatusCode=Fail] > {code} > This is caused by buggy version handling logic in Handshake method. Otherwise > we support any older protocol version. -- This message was sent by Atlassian Jira (v8.3.4#803005)