Platforms

A platform implements a specific protocol

Common verbs for platforms

These are methods called from the client through 'commands'

• subscribe -- tells the platform that the session is interested in incoming data from this platform, receives "credentials"
• unsubscribe -- stop listening for messages of given creds
• message -- sends a message to the target, normally a room or a person
• presence -- says "here I am" to the platform (optionally passing details such as status type & message)

Other platform methods

These are special methods called by the listener

• cleanup -- called when a session is terminated. Should clean up all platform-local data associated with that session (such as close connections, stop polling, ...)