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Using the same chrome profile (session) for different instances of ChromeDriver

I try to open several browsers in parallel, but I can’t go to the site in multiple windows.

Here is how I do it:

namespace XXX { public class CoreDriver { public IWebDriver driver; public int my_port { get; set; } public void Initialize() { string chromeee = ""; if (my_port == 50147) { chromeee = "C:/Users/AA/Downloads/chromedriver1/"; } else if (my_port == 50148) {chromeee = "C:/Users/AA/Downloads/chromedriver2/"; } else if (my_port == 50149) { chromeee = "C:/Users/AA/Downloads/chromedriver3/"; } else if (my_port == 50140) { chromeee = "C:/Users/AA/Downloads/chromedriver4/"; } ChromeOptions options = new ChromeOptions(); options.AddArgument("user-data-dir=C:\\Users\\AA\\AppData\\Local\\Google\\Chrome\\User Data"); var driverService = ChromeDriverService.CreateDefaultService(chromeee); driverService.HideCommandPromptWindow = true; driverService.Port = my_port; driver = new ChromeDriver(driverService, options); driver.Manage().Timeouts().ImplicitlyWait(new TimeSpan(0,0,12)); driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromSeconds(13)); //driver navigate } } }

calling it the following:

 CoreDriver A1 = new CoreDriver(); A1.my_port = 50147; A1.Initialize(); CoreDriver A2 = new CoreDriver(); A2.my_port = 50148; A2.Initialize(); // timeout error here // ...

Unfortunately, after opening the second window, a timeout error n is displayed:

The first exception of type exception "OpenQA.Selenium.WebDriverException" occurred in WebDriver.dll

Additional information: HTTP request to a remote WebDriver server for URL http: / loca1host: 50148 / session disconnected after 60 seconds.

in this line:

driver = new ChromeDriver (driverService, parameters);

after retesting the test with various parameters, I found that the error appears due to the specified Chrome profile:

 options.AddArgument("user-data-dir=C:\\Users\\AA\\AppData\\Local\\Google\\Chrome\\User Data");

If I delete the line, then all my cookies will not be used in the ChromeDriver instance, and this is not something I can live with :) Is there a way to use the same chrome profile in multiple instances of chrome records?

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2 answers

Ok, so I use my approach as stated above.

My requirements:

  • I have to store chrome main profile cookies
  • I have to support extensions to the main profile
  • I don't need history, open tabs, sessions, etc. main profile.
  • after a new launch of an existing custom profile - I start it without open tabs

Here is the logic in a few words.

  • First I specify the directory for the existing Google Chrome profile.
  • If we need to create cookies (for example, log in to a website), we will do this in the main google chrome profile.
  • After that, close the chrome. Some websites store cookies for a long time, some do not. Therefore, it is in our interests to switch to the main profile when necessary. Do not leave the original chrome open! Otherwise, ChromeDriver will display some warnings.
  • Then my script will copy the necessary folders and files to the new folder. This folder is our new profile with all cookies. All about 30 megabytes in size on my PC.
  • If the folder for the new profile already exists, the program will copy cookies only. This should not be more than 1-2 megabytes of data.

And here is the code. You might want to change one or the other.

 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using OpenQA.Selenium; using OpenQA.Selenium.Chrome; using OpenQA.Selenium.Firefox; using OpenQA.Selenium.Support.UI; using OpenQA.Selenium.Internal; using OpenQA.Selenium.Remote; using System.IO; using System.Drawing.Imaging; using System.Management; using System.Text.RegularExpressions; using System.Threading; using System.Diagnostics; using System.Reflection; using System.Threading.Tasks; using System.Collections.Concurrent; using System.Runtime.InteropServices; using System.Net; namespace NAMESPACE { public class CoreDriver { public IWebDriver driver; public string my_name { get; set; } public int my_port { get; set; } public string default_profile_dir = @"C:\Users\USERNAME\AppData\Local\Google\Chrome\"; public string chromedriver_path = @"C:\Users\USERNAME\Downloads\chromedriver_win32\"; public string site_profile_path; public string site_profile_path_s; public string default_path; public void Initialize() { ChromeOptions options = new ChromeOptions(); options.AddArgument("--log-level=3"); options.AddArgument("--test-type"); options.AddArgument("--silent"); options.AddArgument("user-data-dir=" + site_profile_path_s); options.AddArgument("--disable-plugins"); // disable flash var driverService = ChromeDriverService.CreateDefaultService(chromedriver_path); driverService.HideCommandPromptWindow = true; driverService.Port = my_port; driver = new ChromeDriver(driverService, options); driver.Manage().Timeouts().ImplicitlyWait(new TimeSpan(0, 0, 14)); driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromSeconds(15)); IJavaScriptExecutor jscript = driver as IJavaScriptExecutor; jscript.ExecuteScript("return window.stop"); } public void ConfigureProfile() { site_profile_path_s = default_profile_dir + "profile " + my_name; site_profile_path = site_profile_path_s + @"\Default"; default_path = default_profile_dir + @"User Data\Default"; if (!Directory.Exists(site_profile_path)) { CreateBlankProfile(); } else { // copy existing chrome profile. Keep cache, extensions, etc. CopyProfileFiles(); // but stay away from opened tabs RemoveOpenedTabsFiles(); } } public void CleanUpOldProfiles() { DirectoryInfo di = new DirectoryInfo(default_profile_dir); DirectoryInfo[] directories = di.GetDirectories("profile*", SearchOption.TopDirectoryOnly); if (directories.Count() > 0) { foreach (var folder in directories) { try { Directory.Delete(folder.FullName, true); } catch { } } } } public void CreateBlankProfile() { // new profile direftory CreateIfMissing(); // copy existing chrome profile. Keep cache, extensions, etc. // but stay away from opened tabs CopyProfileFiles(); CopyProfileFolders(); } public void CopyProfileFiles() { // default profile location DirectoryInfo di = new DirectoryInfo(default_path); // copy files List<string> file_lib = new List<string>() { "Cookies", "Login", "Preferences", "Secur" }; FileInfo[] files = di.GetFiles("*", SearchOption.TopDirectoryOnly); if (files.Count() > 0) { foreach (var file in files) { if (PassFileOrFolder(file.Name, file_lib)) { file.CopyTo(site_profile_path + @"\" + file.Name, true); } } } } public void RemoveOpenedTabsFiles() { // default profile location DirectoryInfo di = new DirectoryInfo(site_profile_path); // copy files List<string> file_lib = new List<string>() { "Current", "Last" }; FileInfo[] files = di.GetFiles("*", SearchOption.TopDirectoryOnly); if (files.Count() > 0) { foreach (var file in files) { if (PassFileOrFolder(file.Name, file_lib)) { File.Delete(file.FullName); } } } } public void CopyProfileFolders() { // default profile location DirectoryInfo di = new DirectoryInfo(default_path); // copy folders List<string> folder_lib = new List<string>() { "databases", "Extension", " Storage", "Web Applications", "File System", "IndexedDB" }; DirectoryInfo[] directories = di.GetDirectories("*", SearchOption.TopDirectoryOnly); if (directories.Count() > 0) { foreach (var folder in directories) { if (PassFileOrFolder(folder.Name, folder_lib)) { DirectoryCopy(folder.FullName, site_profile_path + @"\" + folder.Name, true); } } } } private void CreateIfMissing() { Directory.CreateDirectory(site_profile_path); } private static void DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs) { // Get the subdirectories for the specified directory. DirectoryInfo dir = new DirectoryInfo(sourceDirName); DirectoryInfo[] dirs = dir.GetDirectories(); if (!dir.Exists) { throw new DirectoryNotFoundException( "Source directory does not exist or could not be found: " + sourceDirName); } // If the destination directory doesn't exist, create it. if (!Directory.Exists(destDirName)) { Directory.CreateDirectory(destDirName); } // Get the files in the directory and copy them to the new location. FileInfo[] files = dir.GetFiles(); foreach (FileInfo file in files) { string temppath = Path.Combine(destDirName, file.Name); file.CopyTo(temppath, false); } // If copying subdirectories, copy them and their contents to new location. if (copySubDirs) { foreach (DirectoryInfo subdir in dirs) { string temppath = Path.Combine(destDirName, subdir.Name); DirectoryCopy(subdir.FullName, temppath, copySubDirs); } } } public bool PassFileOrFolder(string input, List<string> library) { foreach (string name in library) { if (input.Contains(name)) { return true; } } return false; } } }

Please note that I also implemented a method to clean all CleanUpOldProfiles profiles

Review the code, make changes to directories, etc. After execution - make the following call:

 CoreDriver something = new CoreDriver(); // creating an object // settings something.my_port = 50150; // multiple chrome instances - will be run on different ports // I am currently having 4 chrome profiles ;) something.my_name = "mynewprofile"; // full profile name will be: 'profile + my_name'. Check the code of the object. // void something.ConfigureProfile(); // creating new profile or updating existing one, if folder eists something.Initialize(); // starting the browser

Sorry for the long answer. Hope this helps you guys somehow :)

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Thank you very much, this solved my problem ! PS: I tried to use my default profile to avoid the login process. Now I can easily create new profiles that will remain in sync <3.

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Source: https://habr.com/ru/post/1209809/

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