En Sat, 01 Mar 2008 22:51:08 -0200, <[EMAIL PROTECTED]> escribi�: > Hi everyone: > > I posted here a couple days ago looking for some help creating a > Telnet-based chat server. You guys pointed me to Twisted, which has > solved most of my issues. > > However, what I want to do is analyze strings received for keywords > such as 'listcmds' and have the server return something to the client. > I know how to do that part, at least. > > The issue is, when I use clients like PuTTY, it returns a lot of what > appears to be formatting (e.g. if I typed Hello, it would return "\xff > \xfb\x1f\xff\ > xfb \xff\xfb\x18\xff\xfb'\xff\xfd\x01\xff\xfb\x03\xff\xfd\x03Hello".)
They are part of the telnet protocol; 0xFF (IAC=Interpret as Command) starts a two or three byte command sequence. Weren't you using telnetlib? It's supposed to handle this transparently. > How would I go about filtering this stuff out of the strings? The > thing is too, if I use other Telnet programs like Microsoft Telnet, > they don't have this formatting, so I want to be able to recognize if > it does have this formatting and act based on if it does or if it > doesn't. Any client could send similar commands at the start of the session, or even later. > Any help is appreciated, I know I'm probably asking too many questions > already :) It isn't too hard to filter them out, if you want to do it by hand. See the source for telnetlib, and the original Telnet specificacion, RFC 854 http://www.rfc-archive.org/getrfc.php?rfc=854 and RFC 855. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list