message: added virtual, since this is now a base class
diff: @@ -54,7 +54,7 @@ public:
  on_accept_cb;
  tcp_socket(kernel* k);
  - ~tcp_socket();
  + virtual ~tcp_socket();
  tcp_socket(const tcp_socket&) = delete;
  tcp_socket& operator=(const tcp_socket&) = delete;
  