Call has really finished, it might have completed or crashed.

Call has started to finish - data might not be here yet and it will be sent as DataFrames.

Data sent C2S and S2C - as soon as the runner sees the first of these it will start running.

Collector to Runner messages.

Acknowledgement of last data in stream: a message sent by Collectors to Runners.

Enable stream readiness for push: a message sent by Collectors to Runners.

Initial Logging session message sent by Collectors to Runners.

Runners to Collectors.

Per container log data.

Per request log data.

Log lines.

Request to allocate a slot for a call.

UnimplementedRunnerProtocolServer can be embedded to have forward compatible implementations.

RunnerProtocolClient is the client API for RunnerProtocol service.

RunnerProtocolServer is the server API for RunnerProtocol service.