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Feat/network #282
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,15 +1,21 @@ | ||
| { | ||
| "modules": [ | ||
| { "name": "ndb_sdk", "type": "autostart" }, | ||
| { "name": "ndb", "type": "autostart" }, | ||
| { "name": "layer_viewer" }, | ||
| { "name": "timeline_model" }, | ||
| { "name": "timeline" }, | ||
| { "name": "product_registry" }, | ||
| { "name": "mobile_throttling" }, | ||
| { "name": "ndb_ui" }, | ||
| { "name": "xterm" }, | ||
| { "name": "emulation", "type": "autostart" }, | ||
| { "name": "inspector_main", "type": "autostart" }, | ||
| { "name": "mobile_throttling", "type": "autostart" }, | ||
| { "name": "cookie_table" }, | ||
| { "name": "har_importer" }, | ||
| { "name": "network" } | ||
| ], | ||
| "extends": "shell", | ||
| "has_html": true | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| const zlib = require('zlib'); | ||
|
There was a problem hiding this comment. We need to use another way to inject this script, and another channel for inspector node process to speak with DevTools frontend. We already have channel between node process and frontend - devtools protocol. To inject this script please do following:
target.runtimeAgent().invoke_evaluate({
expression: await Ndb.backend.httpMonkeyPatchingSource()
});After these steps we can inject monkey patching script to any inspected process. Second step is how we can build a channel. We can use let messages = [];
let messageAdded = null;
// this function is our instrumentation, to report anything to frontend - call it instead of process.send
function reportMessage(message) {
messages.push(message);
if (messageAdded) {
setTimeout(messageAdded, 0);
messageAdded = null;
}
}
// this function should be called from frontend in the loop using `target.runtimeAgent().invoke_evaluate`
process._getNetworkMessages = async function() {
if (!messages.length)
await new Promise(resolve => messageAdded = resolve);
return messages.splice(0);
}
}Frontend calls in the loop following code: while (true) {
const messages = await target.runtimeAgent().invoke_evaluate({
expression: 'process._getNetworkMessages()', awaitPromise: true
});
// ... process these messages ...
}Feel free to ask any questions! At the same time we can merge your pull request and I will refactor it. |
||
| const http = require('http'); | ||
| const https = require('https'); | ||
|
|
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| const initTime = process.hrtime(); | ||
|
|
||
| // DT requires us to use relative time in a strange format (xxx.xxx) | ||
| const getTime = () => { | ||
| const diff = process.hrtime(initTime); | ||
|
|
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| return diff[0] + diff[1] / 1e9; | ||
| }; | ||
|
|
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| const formatRequestHeaders = req => { | ||
| if (!req.headers) return {}; | ||
| return Object.keys(req.headers).reduce((acc, k) => { | ||
| if (typeof req.headers[k] === 'string') acc[k] = req.headers[k]; | ||
| return acc; | ||
| }, {}); | ||
| }; | ||
|
|
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| const formatResponseHeaders = res => { | ||
| if (!res.headers) return {}; | ||
| return Object.keys(res.headers).reduce((acc, k) => { | ||
| if (typeof res.headers[k] === 'string') acc[k] = res.headers[k]; | ||
| return acc; | ||
| }, {}); | ||
| }; | ||
|
|
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| const getMineType = mimeType => { | ||
| // nasty hack for ASF | ||
| if (mimeType === 'OPENJSON') | ||
| return 'application/json;charset=UTF-8'; | ||
|
|
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|
|
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| return mimeType; | ||
| }; | ||
|
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| const cacheRequests = {}; | ||
| let id = 1; | ||
| const getId = () => id++; | ||
|
|
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| const callbackWrapper = (callback, req) => res => { | ||
| const requestId = getId(); | ||
| res.req.__requestId = requestId; | ||
|
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| process.send({ | ||
| payload: { | ||
| requestId: requestId, | ||
| loaderId: requestId, | ||
| documentURL: req.href, | ||
| request: { | ||
| url: req.href, | ||
| method: req.method, | ||
| headers: formatRequestHeaders(req), | ||
| mixedContentType: 'none', | ||
| initialPriority: 'VeryHigh', | ||
| referrerPolicy: 'no-referrer-when-downgrade', | ||
| postData: req.body | ||
| }, | ||
| timestamp: getTime(), | ||
| wallTime: Date.now(), | ||
| initiator: { | ||
| type: 'other' | ||
| }, | ||
| type: 'Document' | ||
| }, | ||
| type: 'Network.requestWillBeSent' | ||
| }); | ||
|
|
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| const encoding = res.headers['content-encoding']; | ||
| let rawData = []; | ||
|
|
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| const onEnd = function() { | ||
| rawData = Buffer.concat(rawData); | ||
| rawData = rawData.toString('base64'); | ||
|
|
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| cacheRequests[res.req.__requestId] = { | ||
| ...res, | ||
| __rawData: rawData, | ||
| base64Encoded: true | ||
| }; | ||
| const payload = { | ||
| id: res.req.__requestId, | ||
| requestId: res.req.__requestId, | ||
| loaderId: res.req.__requestId, | ||
| base64Encoded: true, | ||
| data: cacheRequests[res.req.__requestId].__rawData, | ||
| timestamp: getTime(), | ||
| type: 'XHR', | ||
| encodedDataLength: 100, | ||
| response: { | ||
| url: req.href, | ||
| status: res.statusCode, | ||
| statusText: res.statusText, | ||
| // set-cookie prop in the header has value as an array | ||
| // for example: ["__cfduid=dbfe006ef71658bf4dba321343c227f9a15449556…20:29 GMT; path=/; domain=.typicode.com; HttpOnly"] | ||
| headers: formatResponseHeaders(res), | ||
| mimeType: getMineType( | ||
| res.headers['content-encoding'] || | ||
| res.headers['content-type'] | ||
| ), | ||
| requestHeaders: formatRequestHeaders(req) | ||
| } | ||
| }; | ||
|
|
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| // Send the response back. | ||
| process.send({ payload: payload, type: 'Network.responseReceived' }); | ||
| process.send({ payload: payload, type: 'Network.loadingFinished' }); | ||
| }; | ||
|
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| if (encoding === 'gzip' || encoding === 'x-gzip') { | ||
| const gunzip = zlib.createGunzip(); | ||
| res.pipe(gunzip); | ||
|
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| gunzip.on('data', function(data) { | ||
| rawData.push(data); | ||
| }); | ||
| gunzip.on('end', onEnd); | ||
| } else { | ||
| res.on('data', chunk => { | ||
| rawData.push(chunk); | ||
| }); | ||
| res.on('end', onEnd); | ||
| } | ||
|
|
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| callback && callback(res); | ||
| }; | ||
|
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| const originHTTPRequest = http.request; | ||
| http.request = function wrapMethodRequest(req, callback) { | ||
| const request = originHTTPRequest.call( | ||
| this, | ||
| req, | ||
| callbackWrapper(callback, req) | ||
| ); | ||
| return request; | ||
| }; | ||
|
|
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| const originHTTPSRequest = https.request; | ||
| https.request = function wrapMethodRequest(req, callback) { | ||
| const request = originHTTPSRequest.call( | ||
| this, | ||
| req, | ||
| callbackWrapper(callback, req) | ||
| ); | ||
| const originWrite = request.write.bind(request); | ||
| request.write = data => { | ||
| req.body = data.toString(); | ||
| originWrite(data); | ||
| }; | ||
| return request; | ||
| }; | ||
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please undo these formatting changes, it will simplify review.