Returns the list of keys in the database.
Request
----------- | request | ----------- 1 byte
Response
--------------------------------------------- | answer | key 1 length | key 1 --------------------------------------------- 1 byte 2 bytes n bytes ... ----------------------------------------- | key n length | key n ----------------------------------------- 2 bytes n bytes --------- | 0 | --------- 1 byte
Sync/async
LIST requests are always synchronous.