zewen

Results 4 issues of zewen

After scan and connect we can get the BLE device object which is broadcasting, then communication with it by `gattlib`, but in some cases, need to communication with an already...

Tinyb can obtain Attribute uuid, but how to obtain Attribute handle??

I can not get some services when i use tinyb(hellotinyb.cpp), result as: ![image](https://user-images.githubusercontent.com/7780577/33421781-2f58d18a-d5ee-11e7-9916-410b0efe4084.png) But with gatttool as: ![image](https://user-images.githubusercontent.com/7780577/33421735-0d8ace32-d5ee-11e7-9157-ec4b44525038.png) why there have not 1800 and 1812 (uuid) service with tinyb? thanks!

To test the backup function , I install jira 8.11.0 on my PC(`ip:192.168.3.3`), The jira can visitor nomally: ![image](https://user-images.githubusercontent.com/7780577/153563110-8eb494dc-0a14-4ff9-8cc0-63c209169fe2.png) and I follow the Instructions in **README**, the details in the...