[SOLVED] http responses not being intercepted while in headless mode on chrome

http responses not being intercepted while in headless mode on chrome

This code works fine while using non headless mode on chrome.

I initiated an instance of INetwork

_networkInterceptor = _driver.Manage().Network;

setup a network response handler and listening for a specific path once the path is found it basically logs the information and adds the response to a list of responses and start monitoring for the responses.

if (interceptedResponse.StatusCode != 200 || !interceptedResponse.Url.Contains(path)) return false;
_logger.LogInformation($"Network interceptor intercepted the response with path - {path}:" +
                  $"\nStatus: {interceptedResponse.StatusCode.ToString()}" +
                  $"\nURL: {interceptedResponse.Url.ToString()}" +
                  $"\nBody: {interceptedResponse.Body}");
var response = JsonConvert.DeserializeObject<TResponse>(interceptedResponse.Body);
_responses.Add(path,response);


_networkInterceptor.AddResponseHandler(responseHandler);
_networkInterceptor.StartMonitoring().Wait();

If i use the chrome argument --headless the above code does not output the results as while using non headless mode.

I tried to setup remote debugging by using the below arguments

chromeOptions.AddArgument("--remote-debugging-port=9222");
chromeOptions.AddArgument("--remote-debugging-address=0.0.0.0");

Am i missing any arguments to enable devtools while using chrome in headless mode or such a feature is not supported?

Solution

Instead of using --headless, use --headless=chrome.

Regular headless mode in Chrome has restrictions, but the Chromium developers recently added a 2nd headless mode that functions the same way as normal Chrome.

There's more info on that here: https://bugs.chromium.org/p/chromium/issues/detail?id=706008#c36

In summary, use --headless=chrome

(The OLD way was: --headless)

January 2023 UPDATE:

Starting with Chrome 109, the Chromium team renamed the option to --headless=new. See https://github.com/chromium/chromium/commit/e9c516118e2e1923757ecb13e6d9fff36775d1f4 for details.