Learn libcef together -- set cookies for your browser

I haven't written about for a long time libcef The article of , Because my understanding is very shallow .

We know that the browser has the function of remembering passwords , After login , You can log in directly by entering the domain name again . Most of the time through cookie To achieve .

For someone who hasn't touched web People who , Maybe I don't understand cookie?

Cookie, Sometimes in the plural Cookies, Refers to some websites in order to identify users 、 Conduct session Tracking data stored on the user's local terminal （ Usually encrypted ）.

for instance , We create One browser, And navigate to the http://blog.csdn.net/ Website , Then you can login and other operations .

But if we give browser Set it up in advance cookie, such as username userinfo etc. . Then visit http://blog.csdn.net/ When ,cef The browser will read cookie Information in , Then displayed http://blog.csdn.net/ The home page is in login status .

therefore , The next question is how to cef Set up cookie？

Is in createbrowser Before or after createbrowser After that ？

The answer is before .

Let's first assume cookie The format of ：
username = xxx

Go straight to the code ：

    std::wstring username_key = L"username";
    std::wstring username_value = L"jiangtao";
    std::wstring domain = L"blog.csdn.net"
    
    CefRefPtr<CefCookieManager> manager = CefCookieManager::GetGlobalManager();
    CefCookie cookie;
	CefString(&cookie.name).FromWString(username_key.c_str());
	CefString(&cookie.value).FromWString(username_value.c_str());
	CefString(&cookie.domain).FromWString(domain.c_str());
	CefString(&cookie.path).FromASCII("/");
	cookie.has_expires = false;
	
	domain = L"https://" + domain;
	CefPostTask(TID_IO, NewCefRunnableMethod(manager.get(), &CefCookieManager::SetCookie,CefString(domain.c_str()), cookie));

// Create a browser 
    CefBrowserHost::CreateBrowser(info, g_web_browser_client.get(),
		domain.c_str(), browserSettings, NULL);

What needs to be noted here is ,cookie.domain Is not to bring "https://" Of , and CefString(domain.c_str()) Medium domain It's with "https://“ Of , Be sure to pay attention to .

Let's see below. setcookie English document of ：
SetCookie

public virtual bool SetCookie( const CefString& url, const CefCookie& cookie, CefRefPtr< CefSetCookieCallback > callback )= 0;

Sets a cookie given a valid URL and explicit user-provided cookie attributes. This function expects each attribute to be well-formed. It will check for disallowed characters (e.g. the ‘;’ character is disallowed within the cookie value attribute) and fail without setting the cookie if such characters are found. If |callback| is non-NULL it will be executed asnychronously on the IO thread after the cookie has been set. Returns false if an invalid URL is specified or if cookies cannot be accessed.

Let's see below. setcookie English document of ：
CreateManager

public static CefRefPtr< CefCookieManager > CreateManager( const CefString& path, bool persist_session_cookies, CefRefPtr< CefCompletionCallback > callback );

Creates a new cookie manager. If |path| is empty data will be stored in memory only. Otherwise, data will be stored at the specified |path|. To persist session cookies (cookies without an expiry date or validity interval) set |persist_session_cookies| to true. Session cookies are generally intended to be transient and most Web browsers do not persist them. If |callback| is non-NULL it will be executed asnychronously on the IO thread after the manager’s storage has been initialized.