I'm developing an app that receives a push notification from the server and if the app is closed i wanted to show a local notification.
To do that i needed to check if the application is running in the foreground or in the background.
I tried finding this but i could not find something similar. I wanted to know if there is any way to check this in the core application or if i would need to create an interface and its implementations.
For example:
public interface IAppInfo
{
bool IsInForeground();
}
Thanks for the help.
Related
I have troubles with deploying an app to Azure.
I started with https://github.com/Autodesk-Forge/forge-configurator-inventor repo. I managed to run it locally with no errors. I am able to login, upload my own zipped files, change parameters, export pdf and download it. Everything is fine. Now i want to publish app to azure.
App is currently running so You can check it out: https://pjk-config.azurewebsites.net
WHAT IS WRONG: I cannot upload any models after login. No error is displayed. If I make change in wrench or wheel model and update it, I won't happened either.
What I did:
created azure account,
changed callback url to my app (in my situation: "https://pjk-config.azurewebsites.net/"),
I changed WebApplication.Program.cs by removing the UseKestrel() statement ( please check that)
{
webBuilder.UseStartup<Startup>();
var port = Environment.GetEnvironmentVariable("PORT");
// If deployed to a service like Heroku, need to listen on port defined in the environment, not the default one
if (!string.IsNullOrEmpty(port))
{
webBuilder.UseUrls("http://*:" + port);
Log.Logger.Information($"PORT environment variable defined to:{port}");
}
});
appsettings:
inviteonlymode - false
embedded mode - false
publisher settings: (but I see polling in output so I think something is missing)
"CompletionCheck": "Callback",
"CallbackUrlBase": "https://pjk-config.azurewebsites.net"
I deployed through VS 2019 with WebApplication right click - publish using this reference:
https://learn.microsoft.com/en-us/visualstudio/deployment/quickstart-deploy-to-azure?view=vs-2019
If you need any additional info just let me know. I am fighting with this almost 30 days by my own. I am beginner and this is my first question on this page so I apologize for lack of precise information about my problem. Just tell me what you need and I will send it over.
thank you for your effort and help. I figured out how to deploy to azure and be able to run without bugs. It was about callback. In my situation Callback URL at my apps>Autodesk Forge should be https://myapp.azurewebsites.net (no slash at the end) and in the appsettings.json i went with that:
"Publisher": {
"CompletionCheck": "Polling",
"CallbackUrlBase": "https://myapp.azurewebsites.net/"
Notice the slash at the end.
Probably the next step will be changing CompletionCheck to Callback.
App is running and I can work on inventor part.
Thanks!
I've got a Windows Store app that's a WinRT Phone/Desktop app (i.e. not a UWP app), targeting Windows 8.1 and up.
It's been on the store for several years now, but recently it stopped being able to connect with various web APIs and websites (YouTube, as well as my own site) using HTTPS.
I have a WPF version of this app as well, and this happened on that app recently as well, and to fix it I used System.Net.ServicePointManager. Unfortunately, in my WinRT environment, System.Net doesn't include ServicePointManager. In my WPF app, I did this, and it worked just fine:
ServicePointManager.ServerCertificateValidationCallback = delegate
{
Debug.WriteLine("returning true (the ssl is valid)");
return true;
};
// our server is using TLS 1.2
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
In doing some research around the internet, it seems that .NET 4.6 should include ServicePointManager, but I don't see any way to change (or even see) my version of .NET in the WinRT development environment.
I looked some more and found that a StreamSocket could be used to connect with TLS1.2... but that seems primarily designed to enable bluetooth communications, or communications to a web endpoint, but only by hostname... which is insufficient for me. I need to connect to an actual website, not just the base-level domain.
Trying this, I did the following:
StreamSocket socket = new StreamSocket();
string serverServiceName = "https";
socket.Control.KeepAlive = false;
url = "inadaydevelopment.com";
HostName serverHost = new HostName(url);
await socket.ConnectAsync(serverHost, serverServiceName, SocketProtectionLevel.Tls12);
text = await ReadDataFromSocket(socket);
I can include the code for ReadDataFromSocket() if necessary, but it seems to work, reading the data from the socket as expected when I point it at https://google.com. However, I can't seem to figure out how to point the socket at anything useful. The homepage of inadaydevelopment.com isn't what I want; I'm looking to consume a web API hosted on that server, but can't seem to find a way to do that.
Since the first parameter to the ConnectAsync() method is just HostName, the second parameter (remoteServiceName) must be the way to connect to the actual API or webpage I'm trying to connect to. According to the docs, that is The service name or TCP port number of the remote network destination... I haven't seen any example values for this parameter other than https and various numeric values, neither of which is going to get me to the API endpoint or webpage I'm trying to connect to.
So, with that super-long preamble out of the way, my question boils down to this:
Is there a way for me to use System.Net.ServicePointManager in my WinRT app like I do in my WPF app? If so, how?
If not, how can I use StreamSocket to connect to the exact web service or webpage I want to connect to, rather than just the top-level host?
If that's not possible, by what other means can I consume web content using TLS1.2?
Thanks in advance for any help or advice.
Use Windows.Web.Http API instead of System.Net.Http API.
System.Net.Http does not support TLS1.2 but Windows.Web.Http does in WinRT apps.
I have a Line-of-Business (LoB) Windows 8.1 Store application I developed for a client. The client side-loads it on several Windows 10 tablets. They use it in an environment where WiFi is spotty at best and they would like to get some sort of notification inside the app, regardless of what page they are on, notification that will let them know that they've lost connectivity to the network. I have created a method on my Web API that is not hitting the repository (database). Instead, it quickly returns some static information regarding my Web API, such as version, date and time of the invocation and some trademark stuff that I'm required to return. I thought of calling this method at precise intervals of time and when there's no response, assume that the Web API connectivity is lost. In my main page, the first one displayed when the application is started, I have the following stuff in the constructor of my view model:
_webApiStatusTimer = new DispatcherTimer();
_webApiStatusTimer.Tick += OnCheckWebApiStatusEvent;
_webApiStatusTimer.Interval = new TimeSpan(0, 0, 30);
_webApiStatusTimer.Start();
Then, the event handler is implemented like this:
private async void OnCheckWebApiStatusEvent(object sender, object e)
{
// stop the timer
_webApiStatusTimer.Stop();
// refresh the search
var webApiInfo = await _webApiClient.GetWebApiInfo();
// add all returned records in the list
if (webApiInfo == null)
{
var messageDialog = new MessageDialog(#"The application has lost connection with the back-end Web API!");
await messageDialog.ShowAsync();
// restart the timer
_webApiStatusTimer.Start();
}
}
When the Web API connection is lost, I get a nice popup message that informs me that the Web API is no longer available. The problem I have is that after a while, especially if I navigate away from the first page but not necessary, I get an UnauthorizedAccessException in my application.
I use the DispatcherTimer since my understanding is that this is compatible with
UI threads, but obviously, I still do something wrong. Anyone cares to set me on the right path?
Also, if you did something similar and found a much better approach, I'd love to hear about your solution.
Thanks in advance,
Eddie
First, If you are using Windows Store Apps, then you could possibly use a Background task to check poll for the status of the web api instead of putting this responsibility on your view model, its not the viewmodels concern
Second, if you are connecting from your Windows store app to your API then one successful authentication/ authorization for the first time, how and where do you store the token (assuming you are using token authentication). If you are (and ideally you should), is there a timer that you start which is set to the token expiration time? Is your local storage getting flushed somehow and loosing the aurthorization data?
Need more information.
in my windows phone 8 application i am using custom uri association to launch another application through my phone.
i.e
await Windows.System.Launcher.LaunchUriAsync(new Uri("sixtag:"));
but my app is not able to get certified for store because of this. the testing team tells that you app terminates unexpectedly while executing this.
now, i don't know how to deal with this.
is there any way to throw exception if the app which i am launching is not installed on phone ?
or i should try something else so my task gets accomplished and app gets certified for store as well.
You do not need to wrap your launch in try/catch or check for success as described in the other answers. As soon as you call LaunchUriAsync, the platform takes over and will automatically handle the possibility of no app being installed by asking the user if she wishes to search in the store.
A couple of things to double-check:
1) Ensure that you can successfully back into your app following the navigation to sixtag.
2) Ensure that your call to LaunchUriAsync is the direct result of a user action (eg. tapping a button)
try
{
await Windows.System.Launcher.LaunchUriAsync(new Uri("sixtag:"));
}
catch
{
MessageBox.Show("please install Sixtag from the app store","AppMissing", MessageBoxButton.OK);
}
you can perhaps display another button and on clicking directly navigate to the app store. See if this solves your problem. Do vote it up if it does :)
You are needed to handle that as shown here . Also Read out Remarks given there.
My goal is to perform Single sign on functionality from my WPF application which has a embedded browser . Single sign on needs to be implemented for this so that the user should not be asked to enter this credentials again to check the reports from the wpf browser. I need to create a local environment for testing this functionality from my side since I am developing for a product i.e a sql report which has forms authentication and logging to the report from my application. I have browsed almost everything on the net regarding this implementation and the sample provided by microsoft for forms authentication is not working. I also find certain condition that the sample will not work in Itanium based processors etc.. and I am working on ssrs 2012. Sign on with capturing the DOM of reporting site and peforming the login wouldn't be a good idea since this is for a product and reporting login will not be same. I am thinking of implementing with Httpwebrequest and Response, but still not clear on implementing. Some one please provide me crisp and working solution for my implementation. Thanks in advance.
Some one please provide me crisp and working solution for my
implementation.
I wouldn't count on that, especially if you're asking for a source code solution.
Single sign-on assumes that you still have an authentication server somewhere, something like Google OAuth. From your question, it isn't quite clear to me if that's what your looking for. If you just need to supply custom credentials to WebBrowser control, that's still possible, but that solution is for WinForms version of WebBrowser control. The WPF version is sealed from customization, so you may have better luck hosting the WinForms WebBrowser in your WPF project, using WindowsFormsHost.
I finally found the way for Implementing single sign on for reporting services. The standard way for implementing single sign on for forms authentication is by using custom security extension sample. The configuration is a bit tricky, But once the configuration is done single sign on needs to be done by getting the auth token by calling Logonuser() methon in reporting service. The below code passes the credentials and returns auth token.
Configuring forms authentication can be found detailed here
http://www.codeproject.com/Articles/675943/SSRS-2012-Forms-Authentication
The below code helps me to achieve single sign on.
[DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool InternetSetCookie(string lpszUrlName, string lpszCookieName, string lpszCookieData);
private void GetAuthToken(string username, string password)
{
// Step1: Add reference to report service either by directly referencing the reportinservice.asmx service of by converting wsdl to class file.
ReportServerProxy2010 rsProxy = new ReportServerProxy2010();
//Step2: Assign the report server service eg:"http://<servername>/ReportServer/ReportService2010.asmx";
rsProxy.Url = string.Format(ReportServerUrl, ReportServer);
try
{
rsProxy.LogonUser(username,password, null);
Cookie authCookie = rsProxy.AuthCookie;
if (authCookie != null)
{
//Internet Set Cookie is a com method which sets the obtained auth token to internet explorer
InternetSetCookie(Url, null, authCookie.ToString());
}
}
catch (Exception ex)
{
}
}
//When navigating now, the auth token is accepted and report manager page is displayed directly without asking for login credentials.
WebBrowserControl.Navigate(new Uri("");}