233391 2021-11-19 17:52:35 -0800 [WebDriver][GLIB] Timeout navigating to COOP same-origin pages 2021-11-19 18:02:46 -0800 1 1 1 Unclassified WebKit WebDriver WebKit Nightly Build Unspecified Unspecified NEW P2 Normal --- 166679 216899 1 lmoura webkit-unassigned bburg bugs-noreply cgarcia oldest_to_newest 1817055 0 lmoura 2021-11-19 17:52:35 -0800 imported/w3c/webdriver/tests/get_window_handle/get.py::test_navigation_with_coop_headers[capabilities0] Timing out waiting for the response setting the URL in the following snippet: ``` @pytest.mark.capabilities({"acceptInsecureCerts": True}) def test_navigation_with_coop_headers(session, url): base_path = ("/webdriver/tests/support/html/subframe.html" + "?pipe=header(Cross-Origin-Opener-Policy,same-origin") session.url = url(base_path, protocol="https") ``` If we remove the pipe defining the COOP header, the assignment returns normally. This also happens when trying to fetch a page with COOP same-origin from a custom server through selenium's RemoteWebDriver. FTR, the coop LayoutTests are working fine. Checking the journal with WEBKIT_DEBUG=All, the NetworkProcess request for the non-coop page returns right away. Meanwhile, the response for a COOP page also loads the page to the finish, but the webdriver request never returns, both in the WPT test and the Selenium script. Between the request and the response, the journal logs a large number of loader-related messages (see below) Maybe something in the automation-related code is losing track of the load after receiving the COOP? Tests scripts to be attached in the following comments [NetworkProcess GET request before] WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setPolicyDocumentLoader: Setting policy document loader to 0x7f41306f6c00 (was (nil)) WebKitWebProcess[2586504]: 0x7f41306f6c00 - [pageID=17, frameID=3, main=1] DocumentLoader::DocumentLoader::attachToFrame: m_frame=0x7f4199e7f000 WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setProvisionalDocumentLoader: Setting provisional document loader to 0x7f41306f6c00 (was (nil)) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setDocumentLoader: Setting document loader to 0x7f41306f6c00 (was (nil)) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::transitionToCommitted: Clearing provisional document loader (m_provisionalDocumentLoader=0x7f41306f6c00) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setProvisionalDocumentLoader: Setting provisional document loader to (nil) (was 0x7f41306f6c00) WebKitWebProcess[2586504]: 0x7f41306f6c00 - [pageID=17, frameID=3, main=1] DocumentLoader::startLoadingMainResource: Returning empty document WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setState: main frame load completed WebKitWebProcess[2586504]: Memory usage info dump at MainFrameLoadCompleted: WebKitWebProcess[2586504]: javascript_gc_heap_capacity_mb: 0 WebKitWebProcess[2586504]: page_count: 1 WebKitWebProcess[2586504]: backforward_cache_page_count: 0 WebKitWebProcess[2586504]: javascript_gc_heap_extra_memory_size_mb: 0 WebKitWebProcess[2586504]: document_count: 1 WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::load (FrameLoadRequest): frame load started WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::load (DocumentLoader): frame load started WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::loadWithDocumentLoader: frame load started WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::loadWithDocumentLoader: main frame load started WebKitWebProcess[2586504]: Memory usage info dump at MainFrameLoadStarted: WebKitWebProcess[2586504]: javascript_gc_heap_capacity_mb: 0 WebKitWebProcess[2586504]: page_count: 1 WebKitWebProcess[2586504]: backforward_cache_page_count: 0 WebKitWebProcess[2586504]: javascript_gc_heap_extra_memory_size_mb: 0 WebKitWebProcess[2586504]: document_count: 1 WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setPolicyDocumentLoader: Setting policy document loader to 0x7f41306f8400 (was 0x7f41306f6c00) WebKitWebProcess[2586504]: 0x7f41306f8400 - [pageID=17, frameID=3, main=1] DocumentLoader::DocumentLoader::attachToFrame: m_frame=0x7f4199e7f000 WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::stopAllLoaders: m_provisionalDocumentLoader=(nil), m_documentLoader=0x7f41306f6c00 WebKitWebProcess[2586504]: 0x7f41306f6c00 - [pageID=17, frameID=3, main=1] DocumentLoader::DocumentLoader::stopLoading: m_frame=0x7f4199e7f000 WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::stopAllLoaders: Clearing provisional document loader (m_provisionalDocumentLoader=(nil)) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setProvisionalDocumentLoader: Setting provisional document loader to 0x7f41306f8400 (was (nil)) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::continueLoadAfterNavigationPolicy: Setting provisional document loader (m_provisionalDocumentLoader=0x7f41306f8400) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setPolicyDocumentLoader: Setting policy document loader to (nil) (was 0x7f41306f8400) WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::prepareForLoadStart: Starting frame load WebKitWebProcess[2586504]: 0x7f4199efcea0 - ProgressTracker::progressStarted: frame 0x7f4199e7f000, value 0.100000, tracked frames 1, originating frame 0x7f4199e7f000, isMainLoad 1 WebKitWebProcess[2586504]: 0x7f41306f8400 - [pageID=17, frameID=3, main=1] DocumentLoader::startLoadingMainResource: Starting load WebKitWebProcess[2586504]: 0x7f41984f2480 - [pageID=17, frameID=3, frameLoader=0x7f4199e7e000, resourceID=7] ResourceLoader::willSendRequestInternal: calling completion handler WebKitWebProcess[2586504]: 0x7f41984f2480 - [pageID=17, frameID=3, frameLoader=0x7f4199e7e000, resourceID=7] SubresourceLoader::willSendRequestInternal: resource load finished; calling completion handler WebKitWebProcess[2586504]: 0x7f4199e7e000 - [pageID=17, frameID=3, main=1] FrameLoader::setDocumentLoader: Setting document loader to 0x7f41306f8400 (was 0x7f41306f6c00) WebKitWebProcess[2586504]: 0x7f41306f6c00 - [pageID=17, frameID=3, main=1] DocumentLoader::DocumentLoader::detachFromFrame: m_frame=0x7f4199e7f000 WebKitWebProcess[2586504]: 0x7f41306f6c00 - [pageID=17, frameID=3, main=1] DocumentLoader::DocumentLoader::stopLoading: m_frame=0x7f4199e7f000 [NetworkProcess GET response after] 1817056 1 444876 lmoura 2021-11-19 17:54:51 -0800 Created attachment 444876 Selenium standalone script Script used to load the page with selenium. Usually invoked with `./coop.py --remote 127.0.0.1:8088 http://localhost:8080/noncoop.html` with the WebDriver running on localhost:8088. 1817057 2 444877 lmoura 2021-11-19 17:56:34 -0800 Created attachment 444877 Standalone server to fetch coop and non-coop pages <server>:<port>/coop.html will return a response with COOP enabled. Any other page will return a non-Coop page. 1817058 3 lmoura 2021-11-19 18:00:07 -0800 And to run the WebDriver manually inside the SDK: ``` $ ./Tools/Scripts/webkit-flatpak --gtk --release -c bash [org.webkit.Sdk WebKit]$ export PATH=/app/webkit/WebKitBuild/Release/bin:$PATH [org.webkit.Sdk WebKit]$ export WEBKIT_EXEC_PATH=/app/webkit/WebKitBuild/Release/bin [org.webkit.Sdk WebKit]$ export WEBKIT_INJECTED_BUNDLE_PATH=/app/webkit/WebKitBuild/Release/lib [org.webkit.Sdk WebKit]$ env WEBKIT_DEBUG=All WebKitWebDriver --port=8088 --host=all ``` The coop.py script automatically defaults to use GTK's MiniBrowser. 444876 2021-11-19 17:54:51 -0800 2021-11-19 17:54:51 -0800 Selenium standalone script coop.py text/x-python 1893 lmoura IyEvdXNyL2Jpbi9lbnYgcHl0aG9uMwoKIiIiU2ltcGxlIHNjcmlwdCBsb2FkaW5nIGEgcGFnZSB3 aXRoIFJlbW90ZVdlYkRyaXZlciIiIgoKaW1wb3J0IGFyZ3BhcnNlCmltcG9ydCB0aW1lCgpmcm9t IHNlbGVuaXVtIGltcG9ydCB3ZWJkcml2ZXIKCgpkZWYgcGFyc2VfYXJncygpOgogICAgIiIiUGFy 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