I want to check my network client's IP address. If the client uses HTTP, I can get its IP address by letting it connect http://ipinfo.io/ip or the like. But I want to prevent it from using HTTP. Is there any TCP service (server) that acts like http://ipinfo.io/ip but doesn't require HTTP? For example, I want a server running this python script forever: ``` import socket EXAMPLE_PORT = 50007 with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind(('', EXAMPLE_PORT)) s.listen(1) while True: conn, addr = s.accept() with conn: conn.sendall(addr[0].encode()) ``` And I want to run the next python script as my client to get its IP address: ``` import socket EXAMPLE_SERVER = 'theserver.xyz' with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: s.connect((EXAMPLE_SERVER, 50007)) data = s.recv(1024) print("my client's IP address:", repr(data)) ``` Notes: * I can make the server myself. But I want to know public service if it already exists. * My client runs on hosts that I don't know their IP addresses.