RTM Client features

An overview of features of the RtmClient object beyond simply opening a WebSocket. Some of these features may not be exclusive to the RTM Client.

• Response Management: Callback functions (or Promises) are associated with every sent message and invoked (or completed) once the Platform responds with an acknowledgement or an error.
• Data Store: A caching mechanism for team data with an abstract interface: SlackDataStore.
  • MemoryDataStore is a default implementation
  • Consumes RTM messages and processes them to update the state of the team, users, and channels.
• Automatic Reconnection: TODO
• Ping/Pong Management: Are there WS protocol level ping/pongs? There def are message level ping/pongs. Describe the technique used.
• Proxy Support: Exposes an API to HttpsProxyAgent to create an alternative transport in order to proxy traffic via another HTTP server. This currently only supports HTTP tunnels.
• Chat and RTM facets: The client exposes an implementation of the rtm.* and chat.* Web API methods. See Web Client features for features of these facets, but not thate Request Queuing is disabled in this client.
• Lifecycle Events: TODO see docs/RtmClient Event Lifecycle.xml

TODO how do retries work?