Looking at the MDN documentation IOS/Safari fully supports ServiceWorkerGlobalScope.onfetch but when you look at the FetchEvent specification it says it is not supported at all by Safari.
In particular, I would like to store some state for each client and was hoping to use the fetchEvent.clientId property of the event to index it. Of course I presume I also have access to the fetchEvent.request object otherwise I can't see how a service worker can do anything useful and I could simulate clientID from a passed in parameter in the url. But the docs don't really tell me what IOS/Safari supports and doesn't so I don't know which way to go.
Can someone please tell me precisely what does IOS/Safari pass when it calls the defined onfetch function.
I found the answer to my question by using https://jakearchibald.github.io/isserviceworkerready/demos/fetchevent/
connecting my iPad to my Macbook and debugging my iPad. I was eventually able to open the web inspector for the Service worker for that page, and the console.log showed the event passed in.
FetchEvent.clientID is present but a zero length string. As it happens I did the same thing on my (linux) Desktop using Chrome and its also a zero length string, BUT it has another parameter resultingClientId with what looks like a UUID in it. That parameter is not there in Safari.
The FetchEvent.request is there, and in particular the URL. So I can generate my own client id in the client (I am using Date.now().toString() as that is good enough for my purposes) for use in the service worker. In fact my site without a service worker was using the in the URLs I need to intercept already, so I am happy that I have a solution.
Related
I am currently looking through the options of creating an offline indication for the nuxt/pwa project. Since this moment, app is running perfectly offline, but what I want to do is to push a small notification when there is no connection saying something simple such as "you are currently offline".
I can see that there are multiple ways of doing this such as writing the event listener directly in the default layout, but my question is which one is the most suitable and reliable for the nuxt setup.
I think you don't need to write your own event listener, as this seems to be taken care of by the nuxt already. The network status seems to be accessible via $nuxt helper's isOnline and isOffline properties. Check out this example:
https://nuxtjs.org/api/$nuxt/
I have not worked with this yet, but I think it might be what you are looking for.
Note: Make sure to copy the whole link, as stackoverflow cuts it off at /$nuxt.
Currently i'm working on a security monitoring app that continuously monitor new processes created.
For that im using wim and event watcher, witch works fine in VB.NET.
But there are 2 features that im missing.
I need to monitor process API calls, and I've been searching the web like mad, and come up empty.
Basically i need to monitor process WaitForSingleObject, LoadLibraryA, CreateProcessW and WriteProcessMemory. And registry access/changes as well.
Im hoping this can be done without a system wide hook, but form what i can find, it cannot be done via WMI.
So the question is, how to, and what can i do with managed code.
I'm gonna focus on the second point as i don't have experience on your first.
For checking if a process is signed i am using the sigcheck.exe from Mark Russinovich, because of the various methods it uses to verify files. Some are catalogsigned, some have the key embedded, there is iirc another weird method. There is no easy way to do it yourself. Had weird false detections with trying self-built methods to cover all possibilities. Hope that info helps
I am working at a GPL botanical collection manager (bauble), and I am linking to some reference sites like the wikipedia, the plant list, and similar sites.
all the above handle requests as GET and for each of them I'm generating an URI which I am connecting to a gtk.LinkButton.
is it possible to link to sites only handling requests as POST? I'm wondering because I had to link to tropicos, and initially I had not found the way they handle GET requests.
I'm not working with pygtk any more. and I guess that if I still needed this (I don't), I should consider this: »By default, Gtk.LinkButton calls Gtk.show_uri_on_window() when the button is clicked. This behaviour can be overridden by connecting to the Gtk.LinkButton ::activate-link signal and returning True from the signal handler.«
In my winrt app, I am trying to update the live tile based on polled URIs. There is currently no update happening and I can't figure out how to troubleshoot. There are numerous scenarios that could be breaking things but i can't seem to find anyway to get insight into potential errors.
The TileUpdateManager seems to be a bit of a black hole that absorbs information but never lets it out.
Does anyone know of how to view errors from the TileUpdateManager?
If it interests anyone, here is my update code:
TileUpdateManager.CreateTileUpdaterForApplication().EnableNotificationQueue(true);
PeriodicUpdateRecurrence recurrence = PeriodicUpdateRecurrence.HalfHour;
List<Uri> urisToPoll = new List<Uri>();
urisToPoll.Add(new Uri(#"http://livetileservice2012.azurewebsites.net/api/liveupdate/1"));
urisToPoll.Add(new Uri(#"http://livetileservice2012.azurewebsites.net/api/liveupdate/2"));
TileUpdateManager.CreateTileUpdaterForApplication().StartPeriodicUpdateBatch(urisToPoll, recurrence);
To expand on Nathan's comment, here are two steps you can take to troubleshoot:
Enter your URI straight into a browser to see the results that are returned, and inspect them for being proper XML. As Nathan points out, your URIs are returning JSON which will be ignored by the tile update manager. As a working example (that I use in Chapter 13 of my HTML/JS book), try http://programmingwin8-js-ch13-hellotiles.azurewebsites.net/Default.cshtml.
If you feel that your URI is returning proper XML, try it in the Push and Periodic Notifications Sample (Scenarios 4 and 5 for tiles and badges). If this works, then the error would be in your app code and not in the service.
Do note that StartPeriodicUpdate[Batch] will send a request to the service right away, rather than waiting for the first interval to pass.
Also, if you think that you might have a problem with the service, it's possible to step through its code using Visual Studio Express for Web running on the localhost, when the app is also running inside Visual Studio Express for Win8 (where localhost is enabled).
.Kraig
I wrote this code to hook API functions by changing the address in the IAT and EAT: http://pastebin.com/7d9N1J2c
This works just fine when I want to hook "recv" or "connect". However for some unknown reason when trying to hook "gethostbyname", my hook function is never called.
I tried to find "gethostbyname" in a debugger by taking the base address of the wsock32.dll module + 0x375e, which is what the ordinal 52 of my wsock32.dll is showing as offset. But that just makes me end up in some random asm code, not at the beginning of a function.
The same method however works fine for trying to find the "recv" entry point.
Does anyone see what I might be doing wrong?
I recommend this tool:
http://www.moduleanalyzer.com/
They do exactly the same and show the url that was connected with that API.
The problem is that there are more than one API to translate an url to an address. The application you are hooking may be using another version of the API that you're not intercepting.
Run some disassembler like IDA and attach to your process after you hook this functions, ida get apply changes on attaching and play process and check what is wrong.
In other way you have many libraries to do hooks with trampolines like Microsoft Detours, NCodeHook etc.