Selenium + DevTools

[remote-specialist]

Hello I am trying to implement video recording for Selenium tests (headless Chrome)
I start Chrome with Selenium and get WebSocketDebuggerUrl from the driver log.
After this, I am trying to create ChromeSession object but it fails with NullReferenceException

I read entire ReadMe - and check sample - but it still not clear for me - should I Rebuild protocol or do smth else?

`var service = ChromeDriverService.CreateDefaultService();
service.LogPath = $"c:\temp\{Guid.NewGuid()}.log";
service.EnableVerboseLogging = true;

                var chromeOptions = new ChromeOptions();
                chromeOptions.AddArguments("headless");
                chromeOptions.AddArguments("window-size=2560,1440");
                chromeOptions.AddArguments("no-sandbox");
                Driver = new ChromeDriver(service, chromeOptions, _timeout);


                var webSocketDebuggerUrl = string.Empty;
                while (string.IsNullOrEmpty(webSocketDebuggerUrl))
                {
                    try
                    {
                        using (var fs = new FileStream(service.LogPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
                        {
                            using (StreamReader reader = new StreamReader(fs))
                            {
                                while (!reader.EndOfStream)
                                {
                                    //"webSocketDebuggerUrl": "ws://localhost:59941/devtools/browser/2ccd43e7-e96a-4432-9d0d-bc29e8f13c5b"
                                    var line = reader.ReadLine();
                                    if (line.Contains("webSocketDebuggerUrl"))
                                    {
                                        var split = line.Split(' ');

                                        webSocketDebuggerUrl = split[split.Length - 1].Replace("\"", string.Empty);
                                    }
                                }
                            }
                        }
                    }
                    catch
                    {
                    }
                }

                var chrome = Driver as ChromeDriver;
                var parameters = new Dictionary<string, object>
                                     {
                                         { "format", "png" },
                                         { "everyNthFrame", 1 }
                                     };
                chrome.ExecuteChromeCommand("Page.startScreencast", parameters);
                var chromeSessionFactory = new ChromeSessionFactory();
                var chromeSession = chromeSessionFactory.Create(webSocketDebuggerUrl);`

P.S.
Thx for this great repository!