19 Sessions ¶

You can use #:session mode to define a URL rule handler.

(post "/auth" #:session mode
      (lambda (rc) ...))

mode can be:

• #t or ’spawn, to spawn a new session, the name of the SID is "sid" by default.
• ‘(spawn ,sid) to specify the name of the sid to spawn.
• ‘(spawn ,sid ,proc) to specify the name of the sid and a proc to define your own session spawner.

And the APIs of the session is :session

(:session rc cmd)

cmd can be:

• ’check to check the session with name "sid".
• ‘(check ,sid) to check the session with a specified sid name.
• ’check-and-spawn to check "sid" first, if it doesn’t exist, then spawn new.
• ‘(check-and-spawn ,sid) to do the same as above, but with specifying the sid name.
• ‘(check-and-spawn-and-keep ,sid) to check, then spawn, then keep, specifying the sid name.
• ’spawn to spawn a session with the name "sid".
• ’spawn-and-keep to spawn a session then keep with the name "sid".
• ’drop to remove the current session by "sid".
• ‘(drop ,sid) to remove the session by the specifed sid.