Undefined error message while using it with testcafe's chrome browser.

Component	Version
Operating system	Mac Os
Node.js	v14.15.5
chrome-remote-interface	0.30.0

Is Chrome running in a container? (I am using chrome with the help of TestCafe)

My main Aim: My Aim is to cut the network so that I can see the error dialog in the website while automation testing.

[Important]: Testcafe is opening with this url: //http://192.168.0.123:1234/someRandomString/https://theWebsiteThatIAmTesting.com/

const CDP = require('chrome-remote-interface');
let config = {
        offline: true,
        latency: 100,
        downloadThroughput: 750 * 1024 / 8,
        uploadThroughput: 250 * 1024 / 8
    };
let client = await CDP({
        port:1234,
        host:"192.168.0.123"
    });

    const {Network} = client;
    await Network.enable();
    Network.emulateNetworkConditions(config);

I am getting error at this line 34:

         29 |        });
         30 |        response.on('end', () => {
         31 |            if (response.statusCode === 200) {
         32 |                callback(null, data);
         33 |            } else {
       > 34 |                callback(new Error(data));
         35 |            }
         36 |        });
         37 |    });
         38 |    request.setTimeout(REQUEST_TIMEOUT, () => {
         39 |        request.abort();

         at IncomingMessage.<anonymous> (/.../node_modules/chrome-remote-interface/lib/external-request.js:34:26)

The error message is not visible and this is the main reason why I am putting this question over here.

[MukulCode]

Most likely http://192.168.0.123:1234/json/list returns an empty body, try with curl as I shown you above if you want to see the status code. In any case, that endpoint is not returning the list of targets as chrome-remote-interface expects to.

Got it. Trying this. Thanks for the explanation and help 😃

[cyrus-and]

Most likely http://192.168.0.123:1234/json/list returns an empty body, try with curl as I shown you above if you want to see the status code. In any case, that endpoint is not returning the list of targets as chrome-remote-interface expects to.