what's the purpose of session_id?

[315567599]

rt , hanks

[aykutalparslan]

A (random) 64-bit number generated by the client to distinguish between individual sessions (for example, between different instances of the application, created with the same authorization key).

Please check the original documentation at: https://core.telegram.org/mtproto/description#session

[junko2013]

收到。。