- 1 year ago
HTTP Basic authentication using CEFSharp
CEFSharp is a framework for embedding Chromium-based browsers in .NET applications. To perform HTTP Basic authentication using CEFSharp, you can use the ResourceRequestHandler
class to intercept and handle requests to a specific URL or domain.
Here's an example of how to implement HTTP Basic authentication using CEFSharp:
csharpusing CefSharp;
using CefSharp.Handler;
public class BasicAuthRequestHandler : ResourceRequestHandler
{
private readonly string _username;
private readonly string _password;
public BasicAuthRequestHandler(string username, string password)
{
_username = username;
_password = password;
}
protected override bool OnBeforeResourceLoad(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
{
if (request.Url.StartsWith("https://example.com"))
{
string credentials = string.Format("{0}:{1}", _username, _password);
byte[] credentialBytes = System.Text.Encoding.UTF8.GetBytes(credentials);
string encodedCredentials = System.Convert.ToBase64String(credentialBytes);
string authHeader = string.Format("Basic {0}", encodedCredentials);
request.Headers["Authorization"] = authHeader;
}
return base.OnBeforeResourceLoad(chromiumWebBrowser, browser, frame, request, callback);
}
}
In this example, we create a BasicAuthRequestHandler
class that inherits from the ResourceRequestHandler
class. The constructor of the BasicAuthRequestHandler
class takes two parameters: a username
and a password
.
The OnBeforeResourceLoad
method is called when a resource is requested by the browser. We check if the requested URL starts with https://example.com
, which is the URL that we want to authenticate against.
If the URL matches, we create a basic authentication header using the username
and password
parameters. We then add the header to the request
object's Headers
collection.
Finally, we return the result of the base OnBeforeResourceLoad
method.
To use this BasicAuthRequestHandler
, you can set it as the ResourceRequestHandler
for a ChromiumWebBrowser
instance:
csharpvar settings = new CefSettings();
Cef.Initialize(settings);
var browser = new ChromiumWebBrowser("https://example.com");
browser.RequestHandler = new BasicAuthRequestHandler("username", "password");
Controls.Add(browser);
In this example, we create a new ChromiumWebBrowser
instance and set its initial URL to https://example.com
. We also set the RequestHandler
property of the browser instance to an instance of the BasicAuthRequestHandler
class, passing in the username and password.
You can modify this example to use the appropriate URL and credentials for your application.