nodriver 多分頁情況下，使用者手動關閉分頁造成 nodriver 無反應

目前 (2024-10-10) nodriver v0.37 還有一些神奇的缺點, 例如：同一個視窗下，開啟二個分頁，先把分頁1 存放在變數A，人工手動關閉分頁1之後，在程式碼存取變數A 就會讓程式掛掉，這裡的掛掉並不是 crash 或 raise exception, 而且類似 dead lock, main thread 走入一個不會跳出的無窮迴圈之中。

解法很簡單，因為出問題的是分頁(tab)，所以只要存取根節點(driver) 就可以了。

範例：

async def nodriver_current_url(driver, tab):
    is_quit_bot = False
    exit_bot_error_strings = [
        "server rejected WebSocket connection: HTTP 500",
        "[Errno 61] Connect call failed ('127.0.0.1',",
        "[WinError 1225] ",
    ]

    url = ""
    tab_count = len(driver.tabs)
    #print("tab_count:", tab_count)

    # PS: manually close tab will cause nodriver no response.
    if tab_count > 1:
        tab = driver.tabs[tab_count-1]

    reset_active_tab = None
    if not tab in driver.tabs:
        print("tab closed by user before.")
        tab = driver.tabs[tab_count-1]
        reset_active_tab = tab

    if tab:
        url_dict = {}
        try:
            url_dict = await tab.js_dumps('window.location.href')
        except Exception as exc:
            print(exc)
            str_exc = ""
            try:
                str_exc = str(exc)
            except Exception as exc2:
                pass
            if len(str_exc) > 0:
                for each_error_string in exit_bot_error_strings:
                    if each_error_string in str_exc:
                        #print('quit bot by error:', each_error_string, driver)
                        is_quit_bot = True

        url_array = []
        if url_dict:
            for k in url_dict:
                if k.isnumeric():
                    if "0" in url_dict[k]:
                        url_array.append(url_dict[k]["0"])
            url = ''.join(url_array)
    return url, is_quit_bot, reset_active_tab

url, is_quit_bot, reset_act_tab = await nodriver_current_url(driver, tab)
if not reset_act_tab is None:
    tab = reset_act_tab

說明：tab變數是程式作用中的分頁(tab), 還到 tab變數不存在於 driver 之中時，設定最後一個分頁為作用中分頁。