即所有资源(包括视频/媒体)下载的数据总量,类似于 Chrome DevTools 的“网络”选项卡返回的数据。
最佳答案
截至 2018 年 1 月,似乎没有任何方法可以处理所有资源类型(监听 response
事件 fails for videos ),并且可以正确计算压缩资源。
最好的解决方法似乎是监听 Network.dataReceived
事件,然后手动处理该事件:
const resources = {};
page._client.on('Network.dataReceived', (event) => {
const request = page._networkManager._requestIdToRequest.get(
event.requestId
);
if (request && request.url().startsWith('data:')) {
return;
}
const url = request.url();
// encodedDataLength is supposed to be the amount of data received
// over the wire, but it's often 0, so just use dataLength for consistency.
// https://chromedevtools.github.io/devtools-protocol/tot/Network/#event-dataReceived
// const length = event.encodedDataLength > 0 ?
// event.encodedDataLength : event.dataLength;
const length = event.dataLength;
if (url in resources) {
resources[url] += length;
} else {
resources[url] = length;
}
});
// page.goto(...), etc.
// totalCompressedBytes is unavailable; see comment above
const totalUncompressedBytes = Object.values(resources).reduce((a, n) => a + n, 0);
关于javascript - 如何使用 Puppeteer 获取请求的原始下载大小?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48263345/