check_local_network.py 文件源码

def _check_worker():
    global _checking_lock, _checking_num, network_stat, last_check_time
    time_now = time.time()
    if config.PROXY_ENABLE:
        socket.socket = socks.socksocket
        xlog.debug("patch socks")

    _checking_lock.acquire()
    _checking_num += 1
    _checking_lock.release()
    try:
        conn = httplib.HTTPSConnection("github.com", 443, timeout=30)
        header = {"user-agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Safari/537.36",
                  "accept":"application/json, text/javascript, */*; q=0.01",
                  "accept-encoding":"gzip, deflate, sdch",
                  "accept-language":'en-US,en;q=0.8,ja;q=0.6,zh-CN;q=0.4,zh;q=0.2',
                  "connection":"keep-alive"
                  }
        conn.request("HEAD", "/", headers=header)
        response = conn.getresponse()
        if response.status:
            last_check_time = time.time()
            report_network_ok()
            xlog.debug("network is ok, cost:%d ms", 1000*(time.time() - time_now))
            return True
    except Exception as e:
        xlog.warn("network fail:%r", e)
        network_stat = "Fail"
        last_check_time = time.time()
        return False
    finally:
        _checking_lock.acquire()
        _checking_num -= 1
        _checking_lock.release()

        if config.PROXY_ENABLE:
            socket.socket = default_socket
            xlog.debug("restore socket")