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VDSIPP: TELNET ECHO ON / OFF ???

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henrywood
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Joined: 21 Sep 2004
Posts: 66
Location: Copenhagen, Denmark

Posted: Tue May 23, 2006 1:58 pm Post subject: VDSIPP: TELNET ECHO ON / OFF ???

Hi !

I am trying to write a server app using VDSIPP that can tell the terminal client to turn off and on echo (ie. control if anything is output to console)

I am going to use this for authentification purposes, turning ECHO OFF when requesting a password and turning it back ON afterwards.

I am able to turn echo off but I cannot turn it back on ? According to RFC 857 it is a feature of the TELNET protocol ??

Code:

Code:

%A = @internet(tcp-server,userid,1)
%B = @internet(tcp-server,message,1)
%C = @internet(tcp-server,userip,1)

%%ECHO_OFF = @chr(255)@chr(254)@chr(1)
%%ECHO_ON = @chr(255)@chr(253)@chr(1)

if @equal(%B,off)
INTERNET TCP-SERVER,SENDUSER,1,%A,%%ECHO_OFF@cr()
goto evloop
end

if @equal(%B,on)
INTERNET TCP-SERVER,SENDUSER,1,%A,%%ECHO_ON%B
goto evloop
end

Any suggestions ?

Henrik

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