A simple C# class using Watson TCP to enable a one-to-one high availability cluster. Callbacks are used to notify the encompassing application when the cluster is healthy (client and server connected) or unhealthy (client or server disconnected).
With release v1.1.1, WatsonCluster now targets .NET Core 2.0 and .NET Framework 4.5.2.
Thanks to @brudo for adding async support to WatsonCluster (v1.0.6) and all of your help from then!
SSL support was introduced in v1.1.0. Use the ClusterNodeSsl class and refer to the TestNodeSsl project for an example.
A test project using the ClusterNode class is included which will help you understand and exercise the class library. You can spawn two instances of the TestNode app using opposing ports to test the functionality. The TestNode app hard-codes to localhost.
Node 1
C:\node1> testnode.exe
Local port : 8000
Remote port : 8001
Node 2
C:\node2> testnode.exe
Local port : 8001
Remote port : 8000
Watson works well in Mono environments to the extent that we have tested it. It is recommended that when running under Mono, you execute the containing EXE using --server and after using the Mono Ahead-of-Time Compiler (AOT).
NOTE: Windows accepts '0.0.0.0' as an IP address representing any interface. On Mac and Linux with Mono you must supply a specific IP address ('127.0.0.1' is also acceptable, but '0.0.0.0' is NOT).
mono --aot=nrgctx-trampolines=8096,nimt-trampolines=8096,ntrampolines=4048 --server myapp.exe
mono --server myapp.exe