Transaction Login

Authentication mode: Open (unauthenticated, any user)

Database access mode: updating

Attempt to log into the server. Both the user and the host the user is using are verified. The login will fail if the authentication of either of them fails or the user does not have the righ to login from this host.

Inputs:

• username: string
  name of the user
• password: string
  password of the user
• hostname: string
  name of the host
• hostkey: string
  the authentication key of the host

Outputs:

• sessionid: string
• validtill: int64