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Full Discussion: Telnet connection closes before i execute GET command
Top Forums Shell Programming and Scripting Telnet connection closes before i execute GET command Post 303020520 by mohtashims on Sunday 22nd of July 2018 01:19:48 AM
Old 07-22-2018
Tools Telnet connection closes before i execute GET command
I tried the below steps for telnet command from a remote server:

1. telnet myservice.com 443
2. GET / HTTP/1.0
3. Press enter key twice

Please see the output below:
Code:
   bash-3.2$ hostname 
 remoteserver1 
  bash-3.2$ telnet myservice.com 443 
 Trying 191.172.172.133... 
 Connected to myservice.com. 
 Escape character is '^]'. 
 GET / HTTP/1.0 
 HTTP/1.1 302 Moved Temporarily 
 Server: Oracle-iPlanet-Web-Server/7.0 
 Date: Tue, 17 Jul 2018 14:04:20 GMT 
 Location: https://myservice.com:443/ 
 Content-length: 0 
  Connection to myservice.com closed by foreign host.

But, when I try the telnet command locally [from the same server where https://myservice.com:443/ service is running] it closes the connection even before I could get the response output of the GET command as shown below:
Code:
   bash-3.2$ hostname 
 localserver1 
  bash-3.2$ telnet myservice.com 443 
 Trying 191.172.172.133... 
 Connected to myservice.com. 
 Escape character is '^]'. 
 GET / HTTP/1.0 
  Connection to myservice.com closed by foreign host.

So, like you can see above the connection gets closed even before the GET command could return any output.

Please share a fix so that I can fire the GET command before the telnet connection closes.
Last edited by mohtashims; 07-22-2018 at 04:34 AM..
 

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LEARN ABOUT DEBIAN

in.identtestd

IN.IDENTTESTD(8)						 Library functions						  IN.IDENTTESTD(8)

NAME

       in.identtestd - a small daemon that can be used to test Ident servers

SYNOPSIS

       in.identtestd

DESCRIPTION

       in.identtestd  is  a  small daemon (to be started from inetd) that does an ident lookup on you if you telnet into it. Can be used to verify
       that your Ident server is working correctly.

       The source code can be found in the debian libident source package, as ident-tester.c.

EXAMPLE

       A typical entry in /etc/inetd.conf would be:

       9999 stream tcp nowait root /usr/sbin/in.identtestd in.identtestd

       With the above entry in place and active, execute "telnet hostname 9999" from either this system, or another system. It should  show  some-
       thing like:

	   Trying hostname...
	   Connected to hostname.
	   Escape character is '^]'.
	   Welcome to the IDENT server tester, version 1.9

	   (Linked with libident 0.22 Debian)

	   Connecting to Ident server at 192.168.1.1...
	   Querying for lport 1109, fport 9999....
	   Reading response data...
	   Userid response is:
	      Lport........ 1109
	      Fport........ 9999
	      Opsys........ UNIX
	      Charset...... <not specified>
	      Identifier... paul
	   Connection closed by foreign host.

AUTHOR

       Peter Eriksson <pen@lysator.liu.se>
       Manpage written for debian by Paul Slootman <paul@debian.org>.

SEE ALSO

       ident(3), identd(8), tcpd(8)

3rd Berkeley Distribution													  IN.IDENTTESTD(8)
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