message: Fixed
  Added custom error message for ECONNREFUSED
diff: @@ -69,6 +69,9 @@ export abstract class Http {
  };
  return new Error(JSON.stringify(formattedError));
  }
  + if (error.code && error.address && error.code === 'ECONNREFUSED') {
  + return new Error(`Cannot reach node: ${error.address}:${error.port}`);
  + }
  return new Error(error);
  }
  }
  