[TCPView} many sockets in TIME Wait state: TCPView stopps displaying informations

[JochenBaier]

If I have TCP/IP client server application which connects/disconnect in a loop many sockets will go into TIME WAIT state.
TCPView will stop showing information in this case:

netstat -a -p TCP does show the states:

Because TCPView does not display the states I had problems to find a bug related to TIME WAIT in my software.
After I used netstat I was able to fix the problem.

Version: 4.19 64 bit, Windows 11 (and Windows 10)

python client/server code to reproduce:

server.py:

import socket

def start_server():
    host = '127.0.0.1'  # Localhost
    port = 65432        # Port to bind the server

    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind((host, port))
    server_socket.listen()

    print(f"Server listening on {host}:{port}...")

    while True:
        conn, addr = server_socket.accept()
        print(f"Connected by {addr}")
        conn.sendall(b"Hello, Client!")
        conn.close()

if __name__ == "__main__":
    start_server()

client.py:

import socket
import time

def connect_to_server():
    host = '127.0.0.1'  # Server's IP
    port = 65432         # Same port as the server

    while True:
        try:
            # Create a socket object and connect to the server
            client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            client_socket.connect((host, port))

            # Receive data from server
            data = client_socket.recv(1024)
            print(f"Received from server: {data.decode()}")

            # Close the connection after receiving data
            client_socket.close()

        except ConnectionRefusedError:
            print("Server is not available. Retrying in 3 seconds...")
            time.sleep(3)  # Wait before retrying

if __name__ == "__main__":
    connect_to_server()