Created
October 3, 2018 11:48
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service to intercept chrome
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| const path = require('path'); | |
| const CDP = require('chrome-remote-interface'); | |
| class EavesDropService { | |
| constructor() { | |
| this.seleniumHost = undefined; | |
| this.urlsRegexToTrack = /search|reserve|initial|baskets|create_payment_resource|paypal|orderhistory/; | |
| this.urlsRegexToIgnore = /analytics|facebook|smetrics/; | |
| } | |
| shouldAttemptRemoteDebugConnection() { | |
| return browser.desiredCapabilities.browserName === 'chrome'; | |
| } | |
| async beforeSession(config) { | |
| this.seleniumHost = config.host; | |
| } | |
| async initChromeDevtoolsProtocolAndEnableNetworkDebugging() { | |
| try { | |
| await browser.url('chrome://version'); | |
| const cmdLineElemText = await browser.getText('#command_line'); | |
| let port = parseInt( | |
| cmdLineElemText.match(/--remote-debugging-port=(\d*)/)[1], | |
| 10 | |
| ); | |
| /** | |
| * newer Chrome versions store port in DevToolsActivePort file | |
| */ | |
| if (port === 0) { | |
| const userDataDir = cmdLineElemText | |
| .match(/--user-data-dir=([^-]*)/)[1] | |
| .trim(); | |
| await browser.url( | |
| `file:///${path.join(userDataDir, 'DevToolsActivePort')}` | |
| ); | |
| const response = await browser.getText('<pre>'); | |
| port = parseInt(response.split('\n').shift(), 10); | |
| } | |
| this.client = await CDP({ | |
| port, | |
| host: this.seleniumHost, | |
| }); | |
| await this.client.Network.enable(); | |
| console.log( | |
| `Successfully enabled Chrome Network debugging on port ${port}` | |
| ); | |
| } catch (e) { | |
| console.warn( | |
| `Could not initialise Chrome Developer Tools Protocol\n${e}` | |
| ); | |
| } | |
| } | |
| async before() { | |
| if (this.shouldAttemptRemoteDebugConnection()) { | |
| await this.initChromeDevtoolsProtocolAndEnableNetworkDebugging(); | |
| !!this.client && | |
| this.client.on('Network.responseReceived', params => { | |
| const { url, status } = params.response; | |
| const shouldTrack = | |
| this.urlsRegexToTrack.test(url) && | |
| !this.urlsRegexToIgnore.test(url); | |
| const statusAsString = status.toString(); | |
| const returned4or5Code = | |
| statusAsString.startsWith('4') || statusAsString.startsWith('5'); | |
| if (shouldTrack && returned4or5Code) { | |
| // DO WHAT YOU WANT HERE | |
| } | |
| }); | |
| } | |
| } | |
| async after() { | |
| !!this.client && (await this.client.close()); | |
| } | |
| } | |
| module.exports = new EavesDropService(); |
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