32327 2009-12-09 09:51:23 -0800 ononline, onoffline and navigator.onLine don't work if Parallels or VMWare is installed 2017-12-21 13:01:33 -0800 1 1 1 Unclassified WebKit WebCore JavaScript 528+ (Nightly build) Mac (Intel) OS X 10.6 RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=181079 https://bug336359.bugzilla.mozilla.org/attachment.cgi?id=220609 InRadar P2 Normal --- 1 grimm cdumez ap beidson cdumez commit-queue darin ggaren mroy tomac webkit-bug-importer youennf oldest_to_newest 170026 0 grimm 2009-12-09 09:51:23 -0800 When going offline or coming back online my understanding is that according to the HTML 5 spec the ononline/onoffline events should fire accordingly and the navigator.onLine property should report the current online state when accessed. In the latest nightly builds as well as Safari 4, these events don't fire and navigator.onLine always appears to return true. To reproduce the problem, load the provided URL and disconnect your network connection. The top box should turn red and report an offline state. To see an example of the behavior I was expecting, try the same procedure using FireFox (3.5). 170517 1 ap 2009-12-10 14:09:20 -0800 Do you happen to have Parallels or VMWare installed? These set up fake network adapters that are always connected, so the machine is always "online" in a way. 170645 2 grimm 2009-12-10 23:20:12 -0800 Good call, I actually do have VMWare installed. I took a look at the source of NetworkStateNotifierMac.cpp and now that you mention this it makes total sense. However, I am wondering why it's not using something like SCNetworkReachabilitySetCallback() instead of counting interfaces. I'm not suggesting that it should, I'm just genuinely curious. 170652 3 ap 2009-12-11 00:16:56 -0800 What target should we use with SCNetworkReachabilitySetCallback? What if the page in question is actually opened from a server running in VMWare? Indeed, there are many cases where online/offline and navigator.onLine events are broken by design. For example, if I'm connected to VPN, and open a Web application from internal network, should an offline event be dispatched once I disconnect from VPN? Or what if a page that's open from intranet fetches its data from an external source with XMLHttpRequest, and a link to that external source gets dropped? Exposing something like SCNetworkReachability to Web applications could make sense in my opinion, but a binary online/offline flag just doesn't describe the reality well. 170865 4 grimm 2009-12-11 11:47:13 -0800 You are quite correct on all points. Even trying to ignore the interfaces that VMWare adds would likely leave a browser running inside a VM in an eternally "offline" state. However, somehow FireFox does not seem to have this exact issue with VMWare being installed. I did a little bit of digging around and it looks like setting the target address to 0.0.0.0 is a good indication that an interface is available. I haven't played around with this yet so I don't know what it would trade off but figured I'd throw it out there for consideration (if it hasn't been already). 334862 5 ap 2011-01-14 22:54:08 -0800 *** Bug 52491 has been marked as a duplicate of this bug. *** 1384060 6 tomac 2017-12-21 00:47:03 -0800 I do have Parallels installed, but am running Safari outside of the virtual machine. Still a simple online/offline test fails (go to https://codepen.io/anon/pen/ZvOwGa, turn WiFi on and off), whereas it works as intended on other browsers. This messes with Service Workers, as the browser always reports to be offline when actually it's not. Safari Technology Preview, Release 46 (Safari 11.1, WebKit 12605.1.18.2) 1384198 7 330048 cdumez 2017-12-21 12:14:19 -0800 Created attachment 330048 Patch 1384199 8 330049 cdumez 2017-12-21 12:14:51 -0800 Created attachment 330049 Patch 1384207 9 330049 ap 2017-12-21 12:31:24 -0800 Comment on attachment 330049 Patch I guess having these hardcoded checks is better that having the problem, r=me. But I still hope that we can get a more sensible API exposed one day. 1384211 10 cdumez 2017-12-21 12:39:16 -0800 (In reply to Alexey Proskuryakov from comment #9) > Comment on attachment 330049 [details] > Patch > > I guess having these hardcoded checks is better that having the problem, > r=me. But I still hope that we can get a more sensible API exposed one day. Agreed 1384222 11 330049 commit-queue 2017-12-21 13:00:53 -0800 Comment on attachment 330049 Patch Clearing flags on attachment: 330049 Committed r226238: <https://trac.webkit.org/changeset/226238> 1384223 12 commit-queue 2017-12-21 13:00:55 -0800 All reviewed patches have been landed. Closing bug. 1384224 13 webkit-bug-importer 2017-12-21 13:01:33 -0800 <rdar://problem/36183968> 330048 2017-12-21 12:14:19 -0800 2017-12-21 12:14:50 -0800 Patch bug-32327-20171221121418.patch text/plain 3361 cdumez U3VidmVyc2lvbiBSZXZpc2lvbjogMjI2MjI3CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggMzUzYmU3YWEyNTBlYjlj OTFkNWNlYThmNmQ0YjVjNWQyMzM4YWQwZC4uMDBhNzhhMDBiMDAxM2I0ZjA4ZGQzYWY1M2VlNGI2 NWE2YTQwMmE2MiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIyIEBACisyMDE3LTEyLTIxICBDaHJp cyBEdW1leiAgPGNkdW1lekBhcHBsZS5jb20+CisKKyAgICAgICAgb25vbmxpbmUsIG9ub2ZmbGlu ZSBhbmQgbmF2aWdhdG9yLm9uTGluZSBkb24ndCB3b3JrIGlmIFBhcmFsbGVscyBvciBWTVdhcmUg aXMgaW5zdGFsbGVkCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNn aT9pZD0zMjMyNworCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAg ICAgIFdoZW4gZGV0ZXJtaW5pbmcgaWYgd2UgYXJlIG9ubGluZSwgaWdub3JlIHZpcnR1YWwgaW50 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