setHttpHeader not wok in QWebEngineUrlRequestInfo

[KHOSRO]

i want change HttpHeader with setHttpHeader but not work
i used this code
i want to change cache-control :max_age :10000000
but setHttpHeader not work
and max-age is always 3600(1hour)

import os
from PySide2.QtCore import QEventLoop, Qt, QUrl,QByteArray
from PySide2.QtWebChannel import QWebChannel
from PySide2.QtWebEngineWidgets import QWebEngineView, QWebEnginePage, QWebEngineProfile
from PySide2.QtWebEngineCore import QWebEngineUrlRequestInterceptor, QWebEngineUrlRequestInfo

class CacheControlInterceptor(QWebEngineUrlRequestInterceptor):
    def interceptRequest(self, info: QWebEngineUrlRequestInfo):
        request_url = info.requestUrl().toString()
        print(f"Request URL: {request_url}")

        if info.resourceType() == QWebEngineUrlRequestInfo.ResourceTypeImage:
            # Set custom cache control
            info.setHttpHeader(QByteArray(b'Cache-Control'), QByteArray(b'public,max-age=10000000'))

total code is :

class MapWidget(QWebEngineView):
    """
    The MapWidget class is a QWebEngineView that houses the leaflet map.
    Since it is a QWidget, it can be added to any QLayout.
    """

    @property
    def page(self):
        return self._page

    @property
    def channel(self):
        return self._channel

    def __init__(self, use_file_absolute_path: bool = True, alternative_base_path: str = "", cache_path: str = ""):
        super().__init__()
        if use_file_absolute_path or len(alternative_base_path) == 0:
            self.base_path = os.path.dirname(os.path.abspath(__file__))
        else:
            self.base_path = alternative_base_path

        # Create a QWebEngineProfile and set the cache path
        self._profile = QWebEngineProfile.defaultProfile()
        if cache_path:
            self._profile.setCachePath(cache_path)

        self._page = QWebEnginePage(self._profile, self)
        self.setPage(self._page)
        self._channel = QWebChannel()
        self._page.setWebChannel(self._channel)

        # Set the interceptor
        self._interceptor = CacheControlInterceptor()
        self._profile.setRequestInterceptor(self._interceptor)

        self._loadPage()
        self.setContextMenuPolicy(Qt.NoContextMenu)
    def _get_page_path(self):
        return os.path.join(self.base_path, 'web', 'map.html')
    def _loadPage(self):
        html_path = self._get_page_path()
        # QEventLoop is used to make the page loading behave synchronously
        init_loop = QEventLoop()
        self._page.loadFinished.connect(init_loop.quit)
        self._page.load(QUrl().fromLocalFile(html_path))
        init_loop.exec_()

[jsulm]

@KHOSRO said in setHttpHeader not wok in QWebEngineUrlRequestInfo:

but setHttpHeader not work

So, is info.setHttpHeader called?

[KHOSRO]

@jsulm no, i checked it now but not work
```

def setHttpHeader(self, name, PySide6_QtCore_QByteArray=None, bytes=None, *args, **kwargs): # real signature unknown; NOTE: unreliably restored from __doc__ 
        """ setHttpHeader(self, name: Union[PySide6.QtCore.QByteArray, bytes], value: Union[PySide6.QtCore.QByteArray, bytes]) -> None """
        print('Hiiiiiiiiiiiiiii')
        pass

it can not print 'Hiiiiiii'

[jsulm]

Then that means that

if info.resourceType() == QWebEngineUrlRequestInfo.ResourceTypeImage

is never true.

[KHOSRO]

@jsulm yesss
this condition satisfy and it is

print(info.resourceType())
        if info.resourceType() == QWebEngineUrlRequestInfo.ResourceTypeImage:
            # Set custom cache control
            info.setHttpHeader(b'Cache-Control', b'max-age=31536000')

outpu is :
PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeImage

and the QWebEngineUrlRequestInfo class is :

class QWebEngineUrlRequestInfo(__Shiboken.Object):
    # no doc
    def block(self, shouldBlock): # real signature unknown; restored from __doc__
        """ block(self, shouldBlock: bool) -> None """
        pass

    def changed(self): # real signature unknown; restored from __doc__
        """ changed(self) -> bool """
        return False

    def firstPartyUrl(self): # real signature unknown; restored from __doc__
        """ firstPartyUrl(self) -> PySide2.QtCore.QUrl """
        pass

    def initiator(self): # real signature unknown; restored from __doc__
        """ initiator(self) -> PySide2.QtCore.QUrl """
        pass

    def navigationType(self): # real signature unknown; restored from __doc__
        """ navigationType(self) -> PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType """
        pass

    def redirect(self, url): # real signature unknown; restored from __doc__
        """ redirect(self, url: PySide2.QtCore.QUrl) -> None """
        pass

    def requestMethod(self): # real signature unknown; restored from __doc__
        """ requestMethod(self) -> PySide2.QtCore.QByteArray """
        pass

    def requestUrl(self): # real signature unknown; restored from __doc__
        """ requestUrl(self) -> PySide2.QtCore.QUrl """
        pass

    def resourceType(self): # real signature unknown; restored from __doc__
        """ resourceType(self) -> PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType """
        pass

    def setHttpHeader(self, name, value): # real signature unknown; restored from __doc__
        """ setHttpHeader(self, name: PySide2.QtCore.QByteArray, value: PySide2.QtCore.QByteArray) -> None """
        pass

    def __init__(self, *args, **kwargs): # real signature unknown
        pass
    @staticmethod # known case of __new__
    def __new__(*args, **kwargs): # real signature unknown
        """ Create and return a new object.  See help(type) for accurate signature. """
        pass
    NavigationType = None # (!) real value is "<class 'PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType'>"
    NavigationTypeBackForward = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeBackForward
    NavigationTypeFormSubmitted = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeFormSubmitted
    NavigationTypeLink = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeLink
    NavigationTypeOther = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeOther
    NavigationTypeRedirect = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeRedirect
    NavigationTypeReload = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeReload
    NavigationTypeTyped = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.NavigationType.NavigationTypeTyped
    ResourceType = None # (!) real value is "<class 'PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType'>"
    ResourceTypeCspReport = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeCspReport
    ResourceTypeFavicon = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeFavicon
    ResourceTypeFontResource = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeFontResource
    ResourceTypeImage = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeImage
    ResourceTypeLast = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeLast
    ResourceTypeMainFrame = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeMainFrame
    ResourceTypeMedia = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeMedia
    ResourceTypeNavigationPreloadMainFrame = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeNavigationPreloadMainFrame
    ResourceTypeNavigationPreloadSubFrame = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeNavigationPreloadSubFrame
    ResourceTypeObject = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeObject
    ResourceTypePing = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypePing
    ResourceTypePluginResource = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypePluginResource
    ResourceTypePrefetch = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypePrefetch
    ResourceTypeScript = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeScript
    ResourceTypeServiceWorker = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeServiceWorker
    ResourceTypeSharedWorker = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeSharedWorker
    ResourceTypeStylesheet = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeStylesheet
    ResourceTypeSubFrame = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeSubFrame
    ResourceTypeSubResource = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeSubResource
    ResourceTypeUnknown = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeUnknown
    ResourceTypeWorker = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeWorker
    ResourceTypeXhr = PySide2.QtWebEngineCore.QWebEngineUrlRequestInfo.ResourceType.ResourceTypeXhr

[jsulm]

@KHOSRO Sorry, I don't really understand what you mean.
Is setHttpHeader() called or not?

And please format your code properly.

[KHOSRO]

@jsulm i correct and edite above code
please check another
yes it call method

[KHOSRO]

@jsulm do u have any idea Sir

[jsulm]

@KHOSRO In the code you posted you do not do anything inside setHttpHeader.

[JonB]

@jsulm
I don't know the answer to this, but what OP shows for QWebEngineUrlRequestInfo and setHttpHeader() etc. is not code he has written, it is Python/PySide's way of showing how QWebEngineUrlRequestInfo() is defined from Python point of view. You can assume it is actually calling the C++ QWebEngineUrlRequestInfo methods.

@KHOSRO
I don't understand what you are doing when you show

def setHttpHeader(self, name, PySide6_QtCore_QByteArray=None, bytes=None, *args, **kwargs): # real signature unknown; NOTE: unreliably restored from __doc__ 
        """ setHttpHeader(self, name: Union[PySide6.QtCore.QByteArray, bytes], value: Union[PySide6.QtCore.QByteArray, bytes]) -> None """
        print('Hiiiiiiiiiiiiiii')
        pass

Where have you made the edit to add your print()? You are not supposed to be redefining (def) setHttpHeader() you are supposed to be calling it with whatever you want. Like you show with

info.setHttpHeader(QByteArray(b'Cache-Control'), QByteArray(b'public,max-age=10000000'))

QWebEngineUrlRequestInfo::setHttpHeader() is not virtual so you cannot override it (e.g. to add in your print()), you can only call it.

[KHOSRO]

@JonB thank u for ur response
do u have idead
why QWebEngineUrlRequestInfo and setHttpHeader() not work when called
and can not change the header
in detail:
i have a client which is qwebengine
i send request url to server when fetch it i want change cache- control for custom purpose
after changing url , i want to show downloaded url

[JonB]

I don't know anything about it, but my guess is that it is changing the header, but you are not seeing the effect you expect/desire. What evidence do you have that it is not setting your header? After calling setHttpHeader() if you are Qt 6.5+ try calling QHash<QByteArray, QByteArray> QWebEngineUrlRequestInfo::httpHeaders() const to at least make sure your Cache-Control header is there. Or try sniffing/checking what is received at server side.