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1. 版本: v2.4
2. 环境：本地/线上
3. 复现步骤：
4. 日志提供：
5. 可选：提供gif或者视频

对于没有提供详细的 Issues 将直接关闭。谢谢

router.get('/:type/pid/:id', middleware.authenticateOrGuest, controllers.api.getObject);
router.get('/:type/tid/:id', middleware.authenticateOrGuest, controllers.api.getObject);
router.get('/:type/cid/:id', middleware.authenticateOrGuest, controllers.api.getObject);

Can be reduced to a single .get('/:type/:id'), the string in the middle is superfluous. Right now you can call https

Let's support at least reading "b3" header from a single string, most commonly traceid-spanid-1
It would also be nice to support optionally writing this, especially in message providers or others with constrained environments.

Expected behavior

As discussed on openzipkin/b3-propagation#21 and first implemented here: https://github.com/openzipkin/brave/blob/master/brave/src/main/java/bra