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Error: No data found for resource with given identifier

See original GitHub issue

Perhaps you can help me with this, I try to get body from some ajax request on the page, but I all time getting Error: No data found for resource with given identifier and looks like problem only with this request, maybe I’m missing something

const CDP = require('chrome-remote-interface');

setTimeout(() => {
    CDP(async (client) => {
        const {Network, Page, Runtime} = client;
        Network.requestWillBeSent(({requestId, request}) => {
            if(request.url.indexOf("ct2/results/rpc") != -1){
                console.log(`REQ [${requestId}] ${request.method} ${request.url} \n`);
            }
        });
        Network.responseReceived(async ({requestId, response}) => {
            if(response.url.indexOf("ct2/results/rpc") != -1){
                const {body, base64Encoded} = await Network.getResponseBody({requestId});
                console.log(`RES [${requestId}] body: ${body} \n`);
            }
        });
        try {
            await Promise.all([Network.enable(), Page.enable()]);
            await Page.navigate({url: 'https://clinicaltrials.gov/ct2/results?cond=Parents&term=&cntry1=&state1=&Search=Search&recrs=a#wrapper'});
            await Page.loadEventFired();
            await Runtime.evaluate({
                expression: `document.querySelector('.paginate_button.next').click()`
            });
        } catch (err) {
            console.error(err);
        }
    }).on('error', (err) => {
        console.error(err);
    });
}, 1000);

Thanks.

Issue Analytics

State:
Created 6 years ago
Comments:24 (9 by maintainers)

Top GitHub Comments

7reactions

cyrus-andcommented, Sep 9, 2017

This happens because AFAIK you’re only allowed to call Network.getResponseBody when the Network.loadingFinished event has fired. Unfortunately this event doesn’t contain the associated request object so you have to keep track of the requestId for which you want to fetch the response body.

I implemented this in the following using a Set:

const CDP = require('chrome-remote-interface');

setTimeout(() => {
    CDP(async (client) => {
        const {Network, Page, Runtime} = client;

        const requests = new Set(); // <---------- HERE

        Network.requestWillBeSent(({requestId, request}) => {
            if(request.url.indexOf("ct2/results/rpc") != -1){
                console.log(`REQ [${requestId}] ${request.method} ${request.url} \n`);

                requests.add(requestId); // <---------- HERE

            }
        });
        Network.loadingFinished(async ({requestId}) => {

            if (requests.has(requestId)) { // <---------- HERE

                const {body, base64Encoded} = await Network.getResponseBody({requestId});
                console.log(`RES [${requestId}] body: ${body} \n`);
            }
        });
        try {
            await Promise.all([Network.enable(), Page.enable()]);
            await Page.navigate({url: 'https://clinicaltrials.gov/ct2/results?cond=Parents&term=&cntry1=&state1=&Search=Search&recrs=a#wrapper'});
            await Page.loadEventFired();
            await Runtime.evaluate({
                expression: `document.querySelector('.paginate_button.next').click()`
            });
        } catch (err) {
            console.error(err);
        }
    }).on('error', (err) => {
        console.error(err);
    });
}, 1000);

2reactions

bookincommented, Sep 9, 2017

Thank you very much for your help, only you are helping people)