Chromium Embedded Framework Forum

by **Concorde** » Sat Mar 17, 2018 4:19 pm

I am very much a newbie and can't seem to do this. It seems I need to use a scheme handler to accomplish this, I call CefRegisterSchemeHandlerFactory from CefBrowserProcessHandler::OnContextInitialized with my implementation of CefSchemeHandlerFactory and CefResourceHandler. Now, I can't hit a break-point at MySchemeHandlerFactory::Create function after a GET request is sent from V8 . AFAIK, a request like such should execute MySchemeHandlerFactory::Create .

Code: Select all: var Request = new XMLHttpRequest(); Request.addEventListener("load", reqListener); Request.open("GET", "client://myapp"); Request.send();

Code: Select all: class MySchemeHandlerFactory : public CefSchemeHandlerFactory, public CefResourceHandler { public: MySchemeHandlerFactory() { getchar(); } virtual CefRefPtr<CefResourceHandler> Create(CefRefPtr< CefBrowser > browser, CefRefPtr< CefFrame > frame, const CefString& scheme_name, CefRefPtr< CefRequest > request) OVERRIDE { const std::string& html_content = "<html><body>Hello!< / body>< / html>"; // Create a stream reader for |html_content|. CefRefPtr<CefStreamReader> stream = CefStreamReader::CreateForData( static_cast<void*>(const_cast<char*>(html_content.c_str())), html_content.size()); // Constructor for HTTP status code 200 and no custom response headers. // There’s also a version of the constructor for custom status code and response headers. return new CefStreamResourceHandler("text/html", stream); } virtual void Cancel() OVERRIDE { } virtual bool CanGetCookie(const CefCookie& cookie) OVERRIDE { return true; } virtual bool CanSetCookie(const CefCookie& cookie) OVERRIDE { return true; } virtual void GetResponseHeaders(CefRefPtr< CefResponse > response, int64& response_length, CefString& redirectUrl) OVERRIDE { } virtual bool ProcessRequest(CefRefPtr< CefRequest > request, CefRefPtr< CefCallback > callback) OVERRIDE { return true; } virtual bool ReadResponse(void* data_out, int bytes_to_read, int& bytes_read, CefRefPtr< CefCallback > callback) OVERRIDE { return true; } IMPLEMENT_REFCOUNTING(MySchemeHandlerFactory); };

Any help would be appreciated , thanks :oops:

. There is something I'm just not getting.

by **payalord** » Sun Mar 18, 2018 2:54 am

Are you sure that "CefBrowserProcessHandler::OnContextInitialized" is fired? I had problem with it when I was implementing my custom resource handler. Because my mistake was that i forgot to add as parent to my ClientApp, the class "CefBrowserProcessHandler". So when i changed it

from "class ClientApp : public CefApp, public CefRenderProcessHandler {"
to "class ClientApp : public CefApp, public CefRenderProcessHandler, public CefBrowserProcessHandler {"

I finally hit break-point inside "OnContextInitialized" where i have next:

Code: Select all: // CefBrowserProcessHandler methods: void OnContextInitialized() OVERRIDE { // Register the custom scheme handler factory. CefRegisterSchemeHandlerFactory("resource", "html", new ResourceShemeHandlerFactory()); }

and also hit break-point in Create function then. But I'm not sure will my situation help you or not. Maybe your problem is little bit different than mine.

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