Example of reading messages with a custom delimiter other than \n.

read_msg_at_custom_delimiter.rb

require 'socket'

DELIMITER = "\x04".freeze

server = TCPServer.new '127.0.0.1', 5556
printf "Server at port %p\n", server.addr

loop do
  Thread.new(server.accept) do |client|
    printf "Client %p START\n", client

    client.each_line DELIMITER do |msg|
      printf "msg len = %4d msg: %p bytes: %p\n", msg.length, msg, msg.unpack('C*').map {|i| "%02x" % i}
      msg.chomp! DELIMITER
      printf "msg len = %4d msg: %p bytes: %p\n", msg.length, msg, msg.unpack('C*').map {|i| "%02x" % i}
    end

    printf "Client %p STOP\n", client
  end
end