Shell Programming and Scripting

A similar script I wrote long time ago, it was working, but it was deleted and now for some reasons my new script doesnt work. I have been searching for a while in google but no luck so far. Can anyone help me to spot syntax errors with this little script here:

Code:

#!/bin/sh

{
    sleep 2 
    echo -e "HEAD / HTTP/1.0\r\r"
} | telnet server 80

Any idea, pls?

use round brackets ()

Ah yes, it should have been (). Nonetheless, it makes no progress, I still cannot pass the HEAD method command to the server

i've recently done some testing on sending mais by telnetting mailserver on port 25 but i didn't manage to make telnet read data from stdin. i was wondering that souch things has been working, as you said.
if you are interestet in the perl example i will send it to you gently

It was indeed working. I even managed to write a port scanner utility with telnet as a backend application

But then I changed to another backend application (netcat), as telnet doesnt support UDP connection.

Unfortunately I didnt keep copy of the working version based on telnet

Thanks for your offer, but I dont have any knowledge in perl