When a connection is made, a transport strategy must be put in place in order to properly move bits back and forth between the client and the server. SignalR can choose among different transport options as follows:
WebSocket: This is an HTML5-related protocol that provides full duplex communication channels over a single TCP connection and is available in modern web browsers and web servers
Server-Sent Events: This is a strategy based on the EventSource HTML5 support that allows a server to stream messages to the connected clients
Forever Frame: This is a strategy based on the use of a hidden iframe element, where the chunked encoding HTTP feature is used to send an indefinitely long stream of bytes
Long Polling: This is quite a basic technique that involves the opening of an HTTP connection and keeping it artificially alive to create the illusion of a persistent connection
Each one of these strategies is based on a specific underlying technology, which...