3min chapter

Elixir Wizards cover image

Mat Trudel on the Future of Phoenix and Web Transports

Elixir Wizards

CHAPTER

The Future of HTTP and WebSockets

WebSockets start life as an HTTP connection. As of plug 1.14, the original upgrade gets surfaced to Phoenix as a plug request. And then Phoenix will indicate that it wants to upgrade that request by calling plug.con.upgrade adapter. That again is the exact same semantics as a Gen Server. You don't have to reauthenticate every time because whatever authentication information you might have about the user is in your socket state.

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