working prototype

client.rb

@@ -0,0 +1,36 @@
+#!/usr/bin/env ruby
+
+require 'socket'
+require 'io/console'
+
+HOST = 'localhost'
+PORT = 6789
+VERSION = 0.01
+
+socket = TCPSocket.new(HOST, PORT)
+
+puts "PORT: #{PORT}"
+puts "HOST: #{HOST}"
+
+#reader = Thread.new do
+Thread.new do
+  loop do
+    msg = socket.gets
+    exit 0 unless msg
+    ver, msg = msg.split('|',2)
+    next unless ver.to_f <= VERSION
+    next unless msg != nil
+    # In message version 0.01 and lower,
+    # all messages are in an assumed format...
+    row,col,chars = msg.split('|',3)
+    print "\x1b[#{row};#{col}H#{chars}\x1b[A"
+  end
+end
+
+while (char = STDIN.noecho(&:getch))
+  exit unless char != "\x03" # ^C
+  exit unless char != "\x04" # ^D
+  next unless char.ord >= 0x20 # Non printing
+  next unless char.ord != 0x7F # DEL (Non print)
+  socket.puts "#{VERSION}|#{char}"
+end