This is simple, echo-like, asynchronous Python 3 TCP server.
It accepts some bytes from connected client until receiving CRLF and then sends back the number of received bytes. After this it terminates the connection to the client.
pytcp writes useful information to the log file: connection state (accepted or terminated), client socket address, number of received bytes and other pytcp related info.
It also shows all this information on the terminal.
Python >= 3.5
Clone this repository. Then go to the repository directory.
Run the script setup.py:
sudo python3 setup.py install
~$ sudo pytcp - running pytcp.
You can specify some parameters for pytcp.
pytcp [-h] [-p PORT] [-l LOGFILE]
-p --port - port, which pytcp listens on.
Default port is 8888.
-l --logfile - the path to the custom logfile.
Default logfile is "pytcp.log". It will be created in the directory, where pytcp is launched.
Server:
~/pytcp$ sudo pytcp -p 123
2017-04-16 01:39:53,393 (root) Started logging to file - /home/kajoj/pytcp/pytcp.log
2017-04-16 01:39:53,393 (root) Welcome to pytcp v0.1.0! Press Ctrl+C to stop the server.
2017-04-16 01:39:53,394 (pytcp.server) Serving on 123 port.
2017-04-16 01:39:53,395 (pytcp.misc) Privileges dropped, running as nobody/nogroup.
2017-04-16 01:40:34,086 (pytcp.server) Accepted connection from 192.168.0.100:35708.
2017-04-16 01:40:45,284 (pytcp.server) Received 11 bytes from 192.168.0.100:35708.
2017-04-16 01:40:45,284 (pytcp.server) Connection with 192.168.0.100:35708 was terminated.
By the way, you don't have to run pytcp as root, if you use the number of port > 1023.
Client:
~$ netcat 192.168.0.104 123
pytcp abcd
11