You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: http_tcp_listener.rs
    path of file: ./repos/CYFS/src/component/cyfs-util/src/interface
    
    the code of the file until where you have to start completion: use super::http_server::HttpServer;
use cyfs_base::{BuckyError, BuckyResult};

use async_std::net::{TcpListener, TcpStream};
use async_std::str
    
    pub fn stop(&self) {
        let mut listener = self.0.lock().unwrap();
        if let Some(abort_handle) = listener.abort_handle.take() {
            info!("will stop tcp listener! local addr={}", listener.listen);
            abort_handle.abort();
        } else {
            warn!("tcp listener not running or already stopped! local addr={}", listener.listen);
        }
    }