SocketDrano

Process to gracefully drain Phoenix Socket connections at shutdown.

Plug.Cowboy.Drainer is able to handle draining of connections as they complete during a shutdown. Websockets, however, are long-lived connections which may not complete before timeout periods are reached, especially if they have a heartbeat to keep alive. This library handles both in a single dep to keep things simple.

This module provides a process that during shutdown will initiate shutdown of open Phoenix sockets.

Refer to the HexDocs for more information and examples.

Installation

If available in Hex, the package can be installed by adding socket_drano to your list of dependencies in mix.exs:

def deps do
  [
    {:socket_drano, "~> 0.2.0"}
  ]
end

Disclaimer

There are no tests, so use at your own risk. This was needed for something at work. If it works for you or you want to contribute nice things like tests, PRs welcomed, just open an issue for anything major before you waste your valuable time.