IO.getc (Based off of #45 MUD)

ruby-talk
1

I have some questions about sockets, IO.getc(), and IO.ready?().

So my telnet server accepts connections. That works.
It displays the prompt. That works.
It accepts the single characters (IO.getc) without pressing return. That works.
But wait! Whenever I connect to the server (telnet localhost), there is always this string of characters that are:

??%??&??&??^C??? ???"??'???

Where are those characters coming from, and is there a suitable workaround? I tried instituting a sleep 1 to allow the characters to pass (assuming it was a short stream), but they still came. I also noticed that this only happens when I press enter (which for me shows up a ^M. bwah?).

CODE:
       loop do
         character = sock.getc
         if sock.ready?
# puts sock.ready?
# puts sock
           case character
           when ?\C-c
             print "^C"
# break
           when ?\r, ?\n, ?\C-M
             $writer[$output_buffer]
             show_prompt
           else
             $output_buffer << character
             print character.chr
           end
         end

I had to comment out 'break' so that I wouldn't get disconnected during the initial character stream.

What's going on?

Thanks,
-------------------------------------------------------|
~ Ari

2

Those are telnet codes you will need to recognize and remove. Your client sends those to determine the features of the server. I discuss this a little and give code for it in this old quiz summary:

   Ruby Quiz - Cows and Bulls (#32)

James Edward Gray II

···

On Jul 25, 2007, at 4:35 PM, Ari Brown wrote:

So my telnet server accepts connections. That works.
It displays the prompt. That works.
It accepts the single characters (IO.getc) without pressing return. That works.
But wait! Whenever I connect to the server (telnet localhost), there is always this string of characters that are:

??%??&??&??^C??? ??!??"??'???