syntax = "proto3";

package longbridge.control.v1;

// control command, see document: https://open.longbridge.com/docs/socket/control-command
enum Command {
  CMD_CLOSE = 0;
  CMD_HEARTBEAT = 1;
  CMD_AUTH = 2;
  CMD_RECONNECT = 3;
}

message Close {
  enum Code {
    HeartbeatTimeout = 0; // 心跳超时
    ServerError = 1; // 服务端错误
    ServerShutdown = 2; // 服务端关闭
    UnpackError = 3; // 数据截取错误
    AuthError = 4; // 鉴权失败
    SessExpired = 5; // session 过期
    ConnectDuplicate = 6; // 单个 session 重复连接
  }
  Code code = 1;
  string reason = 2;
}

message Heartbeat {
  int64 timestamp = 1;
  optional int32 heartbeat_id = 2;
}

message AuthRequest {
  string token = 1;
  map<string, string> metadata = 2;
}

message AuthResponse {
  string session_id = 1;
  int64 expires = 2;
  uint32 limit = 3;
  uint32 online = 4;
}

message ReconnectRequest {
  string session_id = 1;
  map<string, string> metadata = 2;
}

message ReconnectResponse {
  string session_id = 1;
  int64 expires = 2;
  uint32 limit = 3;
  uint32 online = 4;
}