Wait in the background for response from the server and wait for an event to occur

[marek22k]

Hello,

I would like to implement a client app. This can get one or more messages from the server, which should be evaluated in the background, so that the user can see the results later.

Furthermore I would like to use the Async Gem for this. What would be the correct usage here to use the Async Gem? Would I just write Async instead of DoInBackground?

Furthermore, there may be places in the program where I want to wait for a response to come in the server. Is there (maybe also with Async?) a more elegant method than running a loop until it occurs?

class MyClient

  attr_reader :server_version

  def initialize
    @client = TCPSocket.new('localhost', 8888)
  end
  
  def run
    Background do
      while @client.data_available?
        if @client.gets.chomp == 'RequestComplete'
          @server_version = @client.gets.chomp
        end
      end
    end
  end
  
  def send_request
    @client.puts 'NewRequest'
  end
  
  def wait_until_version_available
    while server_version == nil
    
    end
  end

end

Async do
  client = MyClient.new
  client.run
  # do stuff
  client.send_request
  # do stuff
  client.wait_until_version_available
end

I am fairly new to programming with async and non-imperative programs. I hope this is the right place to ask.

[ioquatix]

Yes that looks okay to me, in principle.