Chat server-client applications as a sample implementation of gRPC for C# (Grpc.Core)
- WPF app on .NET Framework 4.8
- Console app on .NET 5.0
- Their common libraries on .NET Standard 2.0
implements:
- Simple RPC: Client registers a message to server.
- Server-side streaming RPC: Server streams messages to clients.
Read the official quick start and guides.
Note that DB is not implemented but on-memory List is used as a placeholder.
service Chat {
rpc Write(ChatLog) returns (google.protobuf.Empty) {}
rpc Subscribe(google.protobuf.Empty) returns (stream ChatLog) {}
}| Project | Type |
|---|---|
| GrpcWpfSample.Server.Wpf | Server on .NET Framework WPF app |
| GrpcWpfSample.Server.Core | Server on .NET Core Console app |
| GrpcWpfSample.Client.Wpf | Client on .NET Framework WPF app |
| GrpcWpfSample.Client.Core | Client on .NET Core Console app |
- Start a server.
- Start client(s). You can start multiple clients.
- For GrpcWpfSample.Client.Core, write a name and hit enter key.
- On client, write a message and hit enter key.
- Your message will be registered on server, and you can see it on the client.
See these classes. Locate required files and then change var secure = true; to enable SSL.
| File Name | Description |
|---|---|
| localhost_server.crt | Server's certificate |
| localhost_serverkey.pem | Private key of the server's certificate |
| localhost_client.crt | Client's certificate (optional) |
| localhost_clientkey.pem | Private key of the client's certificate (optional) |
- All these files have to be PEM format without encryption.
- The server has to have the client's certificate or its CA certificate and vice versa. Here you can find an idea about this.
- The sample implementation includes client authentication as well. You can disable it then you don't need client's certificate and its private key.
- You have to set "localhost" as Common Name (CN) of the certificate for your test on localhost.
- XCA is the one of the easy way to create the these files.