Utilizing Angular to intercept AJAX requests, verifying internet connectivity before proceeding with sending the request

In my Angular (with Ionic) app, I have this code snippet:

my_app.factory('connectivityInterceptorService', ['$q', '$rootScope', function ($q, $rootScope) {
    var connectivityInterceptorServiceFactory = {};
    var _request = function (config) {
        if(navigator.connection) {
            if(navigator.connection.type == Connection.NONE) {

            }
        }
        return config;
    };

    connectivityInterceptorServiceFactory.request = _request;
    return connectivityInterceptorServiceFactory;
}])

The navigator.connection method retrieves the type of connection (wifi, 3G, none, etc...) using a Cordova plugin. This code effectively determines whether the device has an active connection. However, my goal is to "cancel" the request within this if statement, and I'm unsure if it's feasible.

Answer №1

If you're utilizing the reliable $http method to send the request, it's important to note that the 'timeout' parameter can be linked to a promise and subsequently resolved once the promise is fulfilled:

Referencing the guide provided below:

// The timeout property of the http request takes a deferred value        
// that will abort the underlying AJAX request if / when the deferred                  
// value is resolved.

By having your connection function return a promise to the timeout of $http, you can activate the timeout by resolving it with a specific value in case there is no established connection.

Guide link:

I hope this information proves to be beneficial!

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