使用CEfSharp之旅（6）拦截网络请求 截取get post response返回「建议收藏」

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主要是继承实现 Cefsharp的IRquestHandler对象,

废话不多说上代码：

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  public class request : IRequestHandler
    {

        public event Action<string> msg;
        public event Action<string, object> msg2;
        public bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, IFrame frame, bool isProxy,
            string host, int port, string realm, string scheme, IAuthCallback callback)
        {

            return false;
        }

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

            //if (!response.ResponseHeaders["Content-Type"].Contains("application/json"))
            //{
            //    return null;
            //}

            var filter = FilterManager.CreateFilter(request.Identifier.ToString());

            return filter;
        }
        private void Filter_VOIDFUN(string arg1, string arg2, string arg3, long arg4)
        {
            msg2?.Invoke(arg1, arg2);
        }


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

            var m = request.Method;
            msg?.Invoke(request.Url);
            msg?.Invoke(m);
            if (request.Method == "POST")
            {
                using (var postData = request.PostData)
                {
                    if (postData != null)
                    {
                        var elements = postData.Elements;

                        var charSet = request.GetCharSet();

                        foreach (var element in elements)
                        {
                            if (element.Type == PostDataElementType.Bytes)
                            {
                                var body = element.GetBody(charSet);
                                msg?.Invoke(body);
                            }
                        }
                    }
                }
            }

            return false;
        }

        public CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
        {
            var m = request.Method;
            msg?.Invoke(request.Url);
            msg?.Invoke(m);
            if (request.Method == "POST")
            {
                using (var postData = request.PostData)
                {
                    if (postData != null)
                    {
                        var elements = postData.Elements;

                        var charSet = request.GetCharSet();

                        foreach (var element in elements)
                        {
                            if (element.Type == PostDataElementType.Bytes)
                            {
                                var body = element.GetBody(charSet);
                                msg?.Invoke(body);
                            }
                        }
                    }
                }
            }

            return CefReturnValue.Continue;
        }

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

        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 OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status)
        {

        }

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

        }

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

        }

        public bool OnSelectClientCertificate(IWebBrowser browserControl, IBrowser browser, bool isProxy, string host, int port, X509Certificate2Collection certificates, ISelectClientCertificateCallback callback)
        {
            return true;
        }
    }

    public class FilterManager
    {
        private static Dictionary<string, IResponseFilter> dataList = new Dictionary<string, IResponseFilter>();

        public static IResponseFilter CreateFilter(string guid)
        {
            lock (dataList)
            {
                var filter = new AppendResponseFilter("","");
                dataList.Add(guid, filter);

                return filter;
            }
        }

        public static IResponseFilter GetFileter(string guid)
        {
            lock (dataList)
            {
                return dataList[guid];
            }
        }
    }
}

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