chromium - 在初始页面加载c#上发送自定义标题信息

Question

或者如何在新建ChromiumWebBrowser实例时将自定义标头注入到站点的初始请求中.

我是Chromium的菜鸟,可以真正使用一些帮助.我有一个带CEF窗口的winforms应用程序.K,到目前为止没有问题.我需要做的是使用包含身份验证信息的自定义http-header调用/加载初始URL.这可能吗？

以下基本上是正在发挥作用的所有部分工作,除了自定义标题(Doh!)

Winform(CEF httpRequest(带有自定义标头))[永远不会超过这一点] => C#MVC web app => Owin_Authentication_Pipeline segment => MVC响应,带有填充的Razor视图=>显示在Winform Chromium应用程序中.

也许这也会有所帮助:

using CefSharp;
using CefSharp.WinForms;
...
private void Form1_Load(object sender, EventArgs e)
{
    Cef.Initialize();
    ChromiumWebBrowser myBrowser = new ChromiumWebBrowser("whatever.com");
    // ??How do i get a custom header be sent with the above line??

    myBrowser.Dock = DockStyle.Fill;
    //myBrowser.ShowDevTools();
    //myBrowser.RequestHandler = new DSRequestHander();
    //myBrowser.FrameLoadStart += myBrowser_FrameLoadStart;
    this.Controls.Add(myBrowser);
}

我把它弄死了,看了看,尝试了我工具箱中的所有技巧,然后是一些.

我非常感谢任何想法,帮助或暗示我如何能够解决或绕过这个boggler.提前致谢.

Answer 1

实施和分配75.你应该遵循的方法75,一个基本的例子应该是这样的

public class CustomResourceRequestHandler : ResourceRequestHandler
{
    protected override CefReturnValue OnBeforeResourceLoad(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
    {
        var headers = request.Headers;
        headers["User-Agent"] = "My User Agent";
        request.Headers = headers;

        return CefReturnValue.Continue;
    }
}

public class CustomRequestHandler : RequestHandler
{
    protected override IResourceRequestHandler GetResourceRequestHandler(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, bool isNavigation, bool isDownload, string requestInitiator, ref bool disableDefaultHandling)
    {
        return new CustomResourceRequestHandler();
    }
}

browser.RequestHandler = new CustomRequestHandler();

目前,您必须阅读headers属性,进行更改然后重新分配.

Answer 2

您应该创建一个实现的类,IRequestHandler然后RequestHandler在浏览器对象中设置该类的实例.

对于版本53,该类应如下所示:

class ChromeBrowserRequestHandler: IRequestHandler
    {
        public bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, IFrame frame, bool isProxy, string host, int port, string realm, string scheme, IAuthCallback callback)
        {
            return false;
        }

        public bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool isRedirect)
        {
            return false;
        }

        public bool OnBeforePluginLoad(IWebBrowser browser, string url, string policyUrl, WebPluginInfo info)
        {
            return false;
        }

        public CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
        {
            var headers = request.Headers;
            headers["Custom-Header"] = "My Custom Header";
            request.Headers = headers;

            return CefReturnValue.Continue;
        }

        public bool OnCertificateError(IWebBrowser browser, CefErrorCode errorCode, string requestUrl)
        {
            return false;
        }

        public void OnPluginCrashed(IWebBrowser browser, string pluginPath)
        {
        }

        public void OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status)
        {
        }

        public IResponseFilter GetResourceResponseFilter(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response) 
        { 
            return null; 
        }

        public bool OnCertificateError(IWebBrowser browserControl, IBrowser browser, CefErrorCode errorCode, string requestUrl, ISslInfo sslInfo, IRequestCallback callback) 
        {
            return false; 
        }

        public bool OnOpenUrlFromTab(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, WindowOpenDisposition targetDisposition, bool userGesture) 
        {
            return false; 
        }

        public void OnPluginCrashed(IWebBrowser browserControl, IBrowser browser, string pluginPath) 
        {
        }

        public bool OnProtocolExecution(IWebBrowser browserControl, IBrowser browser, string url) 
        {
            return false;
        }

        public bool OnQuotaRequest(IWebBrowser browserControl, IBrowser browser, string originUrl, long newSize, IRequestCallback callback) 
        {
            return false;
        }

        public void OnRenderViewReady(IWebBrowser browserControl, IBrowser browser) 
        { 
        }

        public void OnResourceLoadComplete(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response, UrlRequestStatus status, long receivedContentLength)
        { 
        }

        public void OnResourceRedirect(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, ref string newUrl) 
        { 
        }

        public bool OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response) 
        {
            return false;
        }
    }

然后,在创建浏览器对象时:

ChromiumWebBrowser myBrowser = new ChromiumWebBrowser("whatever.com")
{
    RequestHandler = new ChromeBrowserRequestHandler()
};

请注意,必须在加载页面之前设置请求处理程序.如果您无法在instanctiaction期间设置请求处理程序,您仍可以稍后设置它重新加载页面myBrowser.Load("whatever.com").

Answer 3

在最新的版本中的一个部分回调已经从移动IRequestHandler到 IResourceRequestHandler界面。最简单的方法是覆盖默认实现RequestHandler& ResourceRequestHandler，例如：

class BearerAuthResourceRequestHandler : ResourceRequestHandler
    {
        public BearerAuthResourceRequestHandler(string token)
        {
            _token = token;
        }

        private string _token;

        protected override CefReturnValue OnBeforeResourceLoad(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
        {
            if (!string.IsNullOrEmpty(_token))
            {
                var headers = request.Headers;
                headers["Authorization"] = $"Bearer {_token}";
                request.Headers = headers;
                return CefReturnValue.Continue;
            }
            else return base.OnBeforeResourceLoad(chromiumWebBrowser, browser, frame, request, callback);
        }

    }
    class BearerAuthRequestHandler : RequestHandler
    {
        public BearerAuthRequestHandler(string token)
        {
            _token = token;
        }

        private string _token;

        protected override IResourceRequestHandler GetResourceRequestHandler(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, bool isNavigation, bool isDownload, string requestInitiator, ref bool disableDefaultHandling)
        {
            if (!string.IsNullOrEmpty(_token)) return new BearerAuthResourceRequestHandler(_token);
            else return base.GetResourceRequestHandler(chromiumWebBrowser, browser, frame, request, isNavigation, isDownload, requestInitiator, ref disableDefaultHandling);
        }
    }

然后，将其分配给 browser RequestHandler：

Browser.RequestHandler = new BearerAuthRequestHandler(token);