A dummy socket that acts as a server through which you can send and receive data. Built using socket programming in Python 3.5.

dummy_server.py

import socket

IP_ADDR = "127.0.0.1"
SOCKET_PORT = 5000

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as skt:
    skt.bind((IP_ADDR, SOCKET_PORT))
    skt.listen(1)
    (conn_skt, conn_addr) = skt.accept()
    with conn_skt:
        print("Connected to %s" % (conn_addr,))
        while True:
            usr_ch = input("Send or receive [s/r]? (0 to exit): ")
            if usr_ch == 's':
                send_msg = input("Enter a message to send: ")
                send_msg = bytes(send_msg, "utf-8")
                conn_skt.sendall(send_msg)
            elif usr_ch == 'r':
                recv_msg = conn_skt.recv(1024)
                recv_msg = str(recv_msg, "utf-8")
                print("Received: %s" % (recv_msg, ))
            elif usr_ch == '0':
                break