code-server/packages/protocol/src/proto/client.proto

syntax = "proto3";
import "command.proto";
import "node.proto";
import "vscode.proto";

message ClientMessage {
	oneof msg {
		// command.proto
		NewSessionMessage new_session = 1;
		ShutdownSessionMessage shutdown_session = 2;
		WriteToSessionMessage write_to_session = 3;
		CloseSessionInputMessage close_session_input = 4;
		ResizeSessionTTYMessage resize_session_tty = 5;
		NewConnectionMessage new_connection = 6;
		ConnectionOutputMessage connection_output = 7;
		ConnectionCloseMessage connection_close = 8;
		NewServerMessage new_server = 9;
		ServerCloseMessage server_close = 10;

		// node.proto
		NewEvalMessage new_eval = 11;
	}
}

message ServerMessage {
	oneof msg {
		// command.proto
		NewSessionFailureMessage new_session_failure = 1;
		SessionDoneMessage session_done = 2;
		SessionOutputMessage session_output = 3;
		IdentifySessionMessage identify_session = 4;
		NewConnectionFailureMessage connection_failure = 5;
		ConnectionOutputMessage connection_output = 6;
		ConnectionCloseMessage connection_close = 7;
		ConnectionEstablishedMessage connection_established = 8;
		NewServerFailureMessage server_failure = 9;
		ServerEstablishedMessage server_established = 10;
		ServerCloseMessage server_close = 11;
		ServerConnectionEstablishedMessage server_connection_established = 12;
	
		// node.proto
		EvalFailedMessage eval_failed = 13;
		EvalDoneMessage eval_done = 14;

		WorkingInitMessage init = 15;

		// vscode.proto
		SharedProcessActiveMessage shared_process_active = 16;
	}
}

message WorkingInitMessage {
	string home_directory = 1;
	string tmp_directory = 2;
	string data_directory = 3;
	string working_directory = 4;
	enum OperatingSystem {
		Windows = 0;
		Linux = 1;
		Mac = 2;
	}
	OperatingSystem operating_system = 5;
	string shell = 6;
}