Client may die and there's no way to restart it

[dblock]

The change in https://github.com/aki017/slack-ruby-gem/pull/23 assumes that the main entry point. For example https://github.com/dblock/slack-gamebot is actually a Puma web server that hosts a Slack client.

As a quick experiment I modified it to do:

      def start
        EM.run do
          ws = Faye::WebSocket::Client.new(@url)

          ws.on :open do |event|
          end

          counter = 0

          ws.on :message do |event|

            data = JSON.parse(event.data)

            puts data['type']

            if counter == 3
              puts "exit!"
              EM.stop
              return
            else
              counter += 1
            end

Here's what happens:

~/source/slack-gamebot/dblock (master)$ foreman start
10:03:33 web.1  | started with pid 48042
10:03:33 web.1  | Puma starting in single mode...
10:03:33 web.1  | * Version 2.11.0 (ruby 2.1.6-p336), codename: Intrepid Squirrel
10:03:33 web.1  | * Min threads: 0, max threads: 16
10:03:33 web.1  | * Environment: development
10:03:34 web.1  | warning: parser/current is loading parser/ruby21, which recognizes
10:03:34 web.1  | warning: 2.1.5-compliant syntax, but you are running 2.1.6.
10:03:34 web.1  | * Listening on tcp://0.0.0.0:5000
10:03:34 web.1  | Use Ctrl-C to stop
10:03:34 web.1  | I, [2015-05-27T10:03:34.994152 #48042]  INFO -- : Welcome 'gamebot' to the 'dblock' team at https://dblockdotorg.slack.com/.
10:03:35 web.1  | hello
10:03:35 web.1  | I, [2015-05-27T10:03:35.379089 #48042]  INFO -- : Successfully connected to https://dblockdotorg.slack.com/.
10:03:35 web.1  | presence_change
10:03:35 web.1  | presence_change
10:03:37 web.1  | user_typing
10:03:37 web.1  | exit!
# just sits here

Need a way to bounce EM.

[tlunter]

@dblock Couldn't you just put a while loop here? When start ends, the thread here just ends. Your process is just hanging because the slack thread has ended, but not the main thread running rack.

[dblock]

You're right. I fixed it in https://github.com/dblock/slack-gamebot/commit/617051c61eaf8328c4167f9c11b510defec3399b, and was able to test it using #stop in https://github.com/aki017/slack-ruby-gem/pull/26. Note that you have to re-create a client because you need a new websocket URL.