Another easy solution for this problem is to close server_socket(listen_sock) when we are closing the client socket(sock).
Add the highlighted line into tcp_server_task() function.


if (sock != -1) {
ESP_LOGE(TAG, "Shutting down socket and restarting...");
shutdown(sock, 0);
close(sock ...

attached full code for TCP SERVER + SOFTAP + STA with bugfix of connection problems after disconnect and connect again.

+ fix with able to resume socket even after disconnecting and connecting back to the station or softap.

you can switch between station and softap by changing rf_mode value.

rf ...