gRPC Web Chat Demo

A demo project showcasing a gRPC-based Web Chat service with a .NET server and client implementations in multiple languages.

Overview

The server exposes a streaming gRPC Web Chat service defined in protobuf/webchat-service.proto. Clients connect to the server, join a chat room, and exchange messages in real time using bidirectional streaming.

Server: .NET (C#)
Clients: .NET (C#), Go, Java, Node.js, Android (Kotlin)

All implementations connect to localhost:9090 by default.

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Server — .NET

Requirements: .NET 10 SDK

cd grpc-demo-dotnet
dotnet run --project GrpcDemoDotnet/GrpcDemoDotnet.csproj -- server

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Clients

.NET (C#)

cd grpc-demo-dotnet
dotnet run --project GrpcDemoDotnet/GrpcDemoDotnet.csproj -- client

Go

Requirements: Go 1.24+

cd grpc-demo-golang
go run main.go

Java

Requirements: JDK 8+

cd grpc-demo-java
./gradlew run

Node.js

Requirements: Node.js, npm

cd grpc-demo-nodejs
npm install
npm run start:chat

Android

Requirements: Android Studio

Open grpc-demo-android in Android Studio and run on a device or emulator. Ensure the emulator can reach the server at 10.0.2.2:9090 (the Android emulator's alias for localhost on the host machine).