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Request Intercept and Self Signed Certificates

See original GitHub issue

I am trying to intercept every request, then modifying its response’s body and sending to browser. It all works fine until SSL certificate of website is valid. If some website has self signed SSL certificate then request always shown as pending in network section of developer console of Chromium and my interception function is never called. Even I have added setOverrideCertificateErrors to true and added listener for certificateError. How to solve this issue?

const chromeLauncher = require('chrome-launcher');
const CDP = require('chrome-remote-interface');
const atob = require('atob');
const btoa = require('btoa');

async function main() {
    const chrome = await chromeLauncher.launch({

    const protocol = await CDP({ port: chrome.port });
    const { Runtime, Network, Security } = protocol;
    const activated = await Promise.all([Runtime.enable(), Network.enable(), Security.enable()]);

    Security.certificateError(({eventId}) => {
        console.log("Ignoring cert error for " + eventId);
            action: 'continue'

    await Security.setOverrideCertificateErrors({override: true});

    console.log("Network enabled: " + activated);

    await Network.setRequestInterception({patterns: [{
        urlPattern: '*',
            interceptionStage: 'HeadersReceived' }]});

    Network.requestIntercepted(async ({interceptionId, request}) => {
        console.log(`Intercepted ${request.url} {interception id: ${interceptionId}}`);
        const response = await Network.getResponseBodyForInterception({ interceptionId });
        console.log("Actual Body: " + response.body);
        const bodyData = response.base64Encoded ? atob(response.body) : response.body;
        // Do some changes to original data then forward it
        console.log("Decoded Body: " + bodyData);

promise = main();
promise.then(value => console.log("Done Setting Up"));

Issue Analytics

  • State:closed
  • Created 5 years ago
  • Comments:5 (2 by maintainers)

github_iconTop GitHub Comments

kamilmahmoodcommented, Oct 12, 2018

--ignore-certificate-errors seems to do the trick. It is working now. Thanks for helping.

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