- What are the two serialization formatters supported by SignalR?
JSON and Message Pack.
- What transports does SignalR support?
AJAX long polling, WebSockets, and server-sent events.
- What are the benefits of the Message Pack protocol?
Message Pack is more compact, thereby resulting in lower latency.
- Which targets can we send messages to?
Single recipient, all users, or groups of users.
- Why would we restrict the transport to be used by SignalR?
Some transports might not be supported or might be restricted—for example, WebSockets.
- Can we send messages to SignalR from outside the web application where it is hosted?
Yes...