[Windows] Electron gRPC Server and Playwright + Electron gRPC Client connection issues

[eliw00d]

Problem description

I have an Electron app that spins up a gRPC server after app.whenReady() is called. I have some Playwright + Electron tests that spin up a gRPC client as a fixture available for each test. The instantiated gRPC client closes after a test has finished using client.close(). On Mac, this works great and tests pass without issue. On Windows, one test passes but the next test fails due to Error: 14 UNAVAILABLE: Connection dropped. I thought maybe I needed to gracefully shutdown the gRPC server on Windows so I added a server.tryShutdown call to an app.on('will-quit') listener. This made both tests fail with Error: 1 CANCELLED: Call cancelled.

What do I need to do to make this work on Windows?

Reproduction steps

Electron

const server = new grpc.Server()
server.addService(service, implementation)
server.bindAsync('localhost:1234', grpc.ServerCredentials.createInsecure(), (error) => {
  if (!error) {
    server.start()
  }
})

Playwright + Electron

  grpcClient: async ({}, run) => {
    const packageDefinition = await load(
      'path/to/protos',
      {
        keepCase: true,
        longs: String,
        enums: String,
        defaults: true,
        oneofs: true,
      }
    )
    const proto = loadPackageDefinition(packageDefinition).package
    const client = new proto.Service(
      'localhost:1234',
      credentials.createInsecure()
    )
    await run(client)
    client.close()
  },

Environment

• OS name, version and architecture: Windows 10 x64
• Node version: 16.16.0
• Node installation method: nvm
• Package name and version: "@grpc/grpc-js": "1.7.3",