Then using request handler web-page do not loading...

[senya]

Hello again.
My previous problem solved: 'Create method of class CefSchemeHandlerFactory not called'
viewtopic.php?f=6&t=16344

But immediately a new difficulty appeared.

If i use request handling

Code: Select all

SerfiumCefApp::OnContextInitialized() {
CefRegisterSchemeHandlerFactory(CefString("https"),CefString(""),new SerfiumCefSchemeHandlerFactory());
}

then web-page do not load into browser's rect, only blank white space seeing.

Screencast illustrating the situation (42 sec video):
https://drive.google.com/file/d/1px98wp ... sp=sharing

Without call 'CefRegisterSchemeHandlerFactory' everything works well. Web-pages do not load to browser also with minimal amount of code required for request handling.

Again I have difficulty and seek advice 0_0

[Czarek]

You have to provide an implementation for SerfiumSchemeHandler methods. Currently they are empty thus you get a null request. What are you trying to accomplish?

[senya]

You have to provide an implementation for SerfiumSchemeHandler methods. Currently they are empty thus you get a null request. What are you trying to accomplish?

I'm trying to edit User-Agent string of request header.

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bool SerfiumSchemeHandler::ProcessRequest(CefRefPtr<CefRequest> request,
                                          CefRefPtr<CefCallback> callback) {
    CEF_REQUIRE_IO_THREAD();

    bool handled = true;

    // Get request header
    CefRequest::HeaderMap vHeaderMap;
    request->GetHeaderMap(vHeaderMap);
    qDebug() << Q_FUNC_INFO;
    qDebug() << "vHeaderMap";
    CefRequest::HeaderMap::iterator i = vHeaderMap.begin();
    int c {0};
    while (i != vHeaderMap.end())
    {
        qDebug() << "c" << c++ << "first" << SerfiumCefMisc::utils::cefStringToQString(i->first) <<
                    "second" << SerfiumCefMisc::utils::cefStringToQString(i->second);
        i++;
    }

    // Indicate that the headers are available.
    callback->Continue();   

    return true;
}
//------------------

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// Implementation of the scheme handler for ... requests.
class SerfiumSchemeHandler : public CefResourceHandler {
public:
    SerfiumSchemeHandler() {}
    ~SerfiumSchemeHandler() OVERRIDE {qDebug() << Q_FUNC_INFO;}

    bool ProcessRequest(CefRefPtr<CefRequest> request,
                        CefRefPtr<CefCallback> callback) OVERRIDE;

    void Cancel() OVERRIDE { CEF_REQUIRE_IO_THREAD(); qDebug() << Q_FUNC_INFO;}

    void GetResponseHeaders(CefRefPtr<CefResponse> response,
                            int64& response_length,
                            CefString& redirectUrl) OVERRIDE {qDebug() << Q_FUNC_INFO;}

    bool ReadResponse(void* data_out,
                      int bytes_to_read,
                      int& bytes_read,
                      CefRefPtr<CefCallback> callback) OVERRIDE {qDebug() << Q_FUNC_INFO; return false; }

    virtual bool CanGetCookie(const CefCookie& cookie) OVERRIDE {qDebug() << Q_FUNC_INFO; return true; }
    virtual bool CanSetCookie(const CefCookie& cookie) OVERRIDE {qDebug() << Q_FUNC_INFO; return true; }

private:
    IMPLEMENT_REFCOUNTING(SerfiumSchemeHandler);
    DISALLOW_COPY_AND_ASSIGN(SerfiumSchemeHandler);
};
//------------------

I got null request? I think if i call

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callback->Continue();

and return true in 'CefResourceHandler::ProcessRequest' method then it will be normal request.

[Czarek]

You have to implement all methods. Read documentation comments in cef_resource_handler.h.

[senya]

You have to implement all methods. Read documentation comments in cef_resource_handler.h.

Aah, now I understand - the chromium framework is designed so that you need to manually make a request to the site within the method.
When I look at such classes, I think that you can just add a few lines of code. But it turns out that you need to fully implement sending a request to the web-site and getting the result.