page.py 文件源码

def goto(self, url: str, options: dict = None, **kwargs: Any
                   ) -> Optional[Response]:
        """Got to url."""
        if options is None:
            options = dict()
        options.update(kwargs)
        watcher = NavigatorWatcher(self._client, self._ignoreHTTPSErrors,
                                   options)
        responses: Dict[str, Response] = dict()
        listener = helper.addEventListener(
            self._networkManager, NetworkManager.Events.Response,
            lambda response: responses.__setitem__(response.url, response)
        )
        result = asyncio.ensure_future(watcher.waitForNavigation())
        referrer = self._networkManager.extraHTTPHeaders().get('referer', '')

        try:
            await self._client.send('Page.navigate',
                                    dict(url=url, referrer=referrer))
        except Exception:
            watcher.cancel()
            raise
        await result
        helper.removeEventListeners([listener])

        if self._frameManager.isMainFrameLoadingFailed():
            raise PageError('Failed to navigate: ' + url)
        return responses.get(self.url)