From: nickb@... (Nick Bensema)
Date: 2001-03-01T11:40:03+09:00
Subject: [ruby-talk:11819] Thread-local $> and $<

Having just learned that $-variables, while often considered to be global,
are actually thread-specific.

Therefore, I'd like to create a thread which does input and output from
another file, a socket, or some other similar device.  That way, with the
proper protocol wrapper, I could offer all kinds of interactive services
like MUDs and such.  No, I don't have inetd; I'm running Windows 98.

I tried just setting them in the following code, and that didn't work.
I wasn't surprised that "TWO" didn't print, but neither did THREE.  It
was as if I had broken the socket by assigning them elsewhere.  Any
ideas?

class TinyServer
  def run
    Thread.new {
      server = TCPServer.new (2323)
      while (socket = server.accept)
        print "Caller!\n"
        Thread.new {
          socket.puts "ONE"
          $< = socket
          $> = socket
          puts "TWO"
          socket.puts "THREE"
        }
      end
    }
    # command loop
    while TRUE
      puts "Type QUIT to stop the server."
      break if gets.downcase.strip == "quit"
    end
  end
end

TinyServer.new.run


-- 
Nick Bensema <nickb@io.com>      ICQ#2135445 
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