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.
  • pinknoise
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    3 years ago

    Not that I know of. HTTP uses TCP connections, so why don’t you want to use it? Sounds like you are trying to solve the wrong problem.

    • erioqueOP
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      3 years ago

      My client must send data like ‘GET /ip HTTP/1.1\r\n…’ after connecting for HTTP servers to get wanted responses. I want to use TCP without HTTP because I want to reduce the data.