QWebEngineUrlRequestInterceptor cause webview crash

Mozzie

Hi,
Today, I found my webView crashed the reason was because I delete QWebEngineUrlRequestInterceptor

my interceptor is:

#include "WebViewOrderInterceptor.h"

#include <QUrl>
#include <QUrlQuery>
#include <QDebug>

WebViewOrderInterceptor::WebViewOrderInterceptor(QObject *parent)
	: QWebEngineUrlRequestInterceptor(parent)
{

}

WebViewOrderInterceptor::~WebViewOrderInterceptor()
{
#ifdef QT_DEBUG
	qDebug() << __FUNCTION__;
#endif
}

void WebViewOrderInterceptor::interceptRequest(QWebEngineUrlRequestInfo &info)
{
	QUrl url = info.requestUrl();

	if (url.path().contains("_____tmd_____/verify")) {
		emit verifyRequired();
	}
}

and the code where used interceptor is:

        WebViewOrderInterceptor* interceptor = new WebViewOrderInterceptor(webview);
	webView->page()->profile()->setRequestInterceptor(interceptor);

after I change the parent of interceptor from webview to 'this',
the webview did not crash,
but when i want to delete interceptor by calling interceptor->deleteLater() from 'this' Object after webview was closed and destoryed,
the crash happend again.

I noticed the document says

Registers a request interceptor singleton interceptor to intercept URL requests.

Does this means I just need only one interceptor for all webview.
And because of I build a interceptor for every webview, so when I delete interceptor, the webview will crash?

VannyD

Hey!
I had a very similar problem where my application crashed when I tried to delete the interceptor (see https://stackoverflow.com/questions/59631239/qwebengine-deleting-qwebengineurlrequestinterceptor-results-in-crash)

I did not have multiple webviews but multiple webpages, where I always created a new interceptor. It was sufficient to only use one interceptor.

Hope this helps!