From: andreas.alin@...
Date: 2006-08-19T22:55:21+09:00
Subject: Client/server with threads

Yow!
I'm trying to make a script that will act as a server (server 1), and
when a connection to the server server 1 is made, it will start a
thread that will connect to another server (server 2), and it will keep
the connection to server 2, even if the client disconnects.

The thing is that, as I've tried, my client/server will not connect to
another server, and if it does, the client can not disconnect.

Any ideas?

Thanks,
Andreas

----------------------

require 'socket'

class Session < Thread
  def initalize(session_id)
    super
    @session_id = session_id
  end

  def session_id
    @session_id
  end

  def send_message( message
    # This method should send a message to
    # server 2
    puts message
  end
end

threads = []

server = TCPServer.new("0.0.0.0", 12121)

while (session = server.accept)
  session_id, message = session.gets.split(";", 2)

  t = threads.map {|t| t if t["session_id"] == session_id }.delete_if
{|s| s == nil}.first
  puts t
  if t
    puts "Found thread with existing session_id: #{ session_id }"
    t.send :send_message, message
  else
    threads << Session.new(session) do |t|
      Thread.current["session_id"] = session_id
      puts "Creating thread for #{ session_id }"
    end
  end
  session.close
end