Basic implementation of RFC862 echo protocol

Note: This is for academic purposes only - this application is not designed for production but for demonstration. For example security issues have not been addressed.

Doing it by hand

If you don't want to use clion or you want to do things manually:

$ git clone https://github.com/pmembrey/echo.git
$ cd echo
$ mkdir build
$ cd build
$ cmake -G "Unix Makefiles" ../
$ make

Some pre-requisites for the example we'll do in class:

$ sudo apt-get install tmux tcpdump

First you'll need to run the server in a new terminal. It blocks when it runs:

$ ./echos  12345

Then in another terminal run:

$ ./echoc 127.0.0.1 12345 "Hello world!"