As described in the Cordova Network Information Plugin, we must subscribe to online and offline events to detect the network connectivity status.
Is there a way to know what is the network status without listening to these events?
Example:
Before performing an action from my mobile app, I need to know if there is a network connectivity: If there is a connection I perform my action, otherwise I display a message that indicates to the user that he must be online.
In the Network type, there is the type attribute that contains the value none if the network is offline.
This is an example of a service that checks the offline status of the network:
import { Injectable } from "#angular/core";
import { Network, Connection } from '#ionic-native/network/ngx';
#Injectable({providedIn: 'root'})
export class NetworkService {
constructor(private network: Network) {}
public isOffline() {
return this.network.type.toLowerCase() == Connection[Connection.NONE].toLowerCase();
}
}
Related
I implemented a custom Authenticator to restrict login above a given number of existing sessions.
This Authenticator implementation doesn't use any user interaction nor require any model change.
public class MaxGroupAttributeValAuthenticator implements Authenticator {
#Override
public void action(AuthenticationFlowContext authenticationFlowContext) {
if toManySessions(authenticationFlowContext){
authenticationFlowContext.cancelLogin();
} else {
authenticationFlowContext.success();
}
}
It only check the current number of session
This Authenticator is available as an "execution" to be added to a copy of the default Browser Flow
But on a copy of the default Clients Flow, my Custom SPI is not available in the execution list.
How can I have my clients calling this Authenticator upon login/session_creation ?
I'm totally new to flutter.
I need to do a simple app that fetches a few data from a device over wifi (the device acts as AP).
I want to have some popup shown, when the device is not connected, that will show "not connected" and have a button to open wifi settings (just call it from app_settings)
And it shall close this popup when the connection is established.
I think I will reuse requests that were used for AJAX, so just a simple web request with a plaintext response of a few numbers.
The target device is on fixed IP on its own network. So I do not need any more detection than just sending a request and seeing if it returns.
And when that connection is successful, I want to fetch that data a few times a second if possible.
There is a package called connectivity_plus that checks your connectivity.
Usage:
import 'package:connectivity_plus/connectivity_plus.dart';
var connectivityResult = await (Connectivity().checkConnectivity());
if (connectivityResult == ConnectivityResult.mobile) {
// I am connected to a mobile network.
} else if (connectivityResult == ConnectivityResult.wifi) {
// I am connected to a wifi network.
}
If you'd like to make a call to a web service request consider using the http package with a timeout() to check if the service is available.
import 'package:http/http.dart' as http;
final response = await http.get(Uri.parse("myurl.com/MyService")).timeout(const Duration(seconds: 4));
If after 4 seconds the function did not return anything (or complete), it will throw a TimeoutException, or you can specify what to do as a parameter.
Read more here > Documentation
As per the requirement, iOS app needs to identify the currently connected networks whether its open or password protected and display an alert message to the user.
I have gone through the link below but could not make it work https://developer.apple.com/documentation/networkextension/nehotspotnetwork/1618930-issecure
I have received entitlements from the apple, But could not see any sample project.
I expect the code should be similar to the below (just to make the question clear, not real code)
let network = NEHotspotNetwork() // get the currently connected network
let isSecured = network.isSecure // get the current security
print("isSecure \(isSecured)") //printing the security is password protected or not
Few things to consider to achieve this
Request entitlement from apple
Your device target is iOS 14.*
Code below
if #available(iOS 14.0, *) {
NEHotspotNetwork.fetchCurrent { network in
if let network = network {
print("is secured ((network.isSecure))")
}
}
}
I've implemented the possibility of opening VPN connection with IKEv2. The connection works great after I close (kill) the app. However, I want to get the current connection status after I launch the app again. How can I do that?
Unfortunately this returns invalid status when I try to call:
NEVPNManager.shared().connection.status
but I see (and it's correct and it's true) Personal VPN in active state here:
Could you provide how to get actual status of my Personal VPN?
I've resolved this case with this implementation specially for IKEv2
// special case for IKEv2
NEVPNManager.shared().loadFromPreferences { error in
if error != nil {
//
} else {
print(NEVPNManager.shared().connection.status)
}
}
I've added this into my connection manager and now the app handles correctly the status of Personal VPN after relaunch of the app
I am new to iPhone. When I am dealing with location manager I got the first message to access my location
Allow and Don't Allow if I press allow then it works fine.
But I press Don't Allow then it gives me the warning which I have displayed below :
Function,"void CLClientHandleDaemonDataRegistration(__CLClient*, mach_port_t, const CLDaemonCommToClientRegistration*, const __CFDictionary*)",server did not accept client registration 1
Does anyone have a solution for that?
There is no solution, if the user does not allow your app to use the location service there is no way to enforce it.
You can check if you may use the location service:
BOOL result = [CLLocationManager locationServicesEnabled];
if (result) {
dbgPrint(#"Location services enabeld");
} else {
dbgPrint(#"Location services disabeld");
}