Angular Js Http Intercept Neterr_connection_refused

When working with AngularJS, encountering errors during HTTP requests can be quite common. One such error that you might come across is the "NET::ERR_CONNECTION_REFUSED" message. This error typically indicates that the connection to the server was refused or failed.

The main cause of the "NET::ERR_CONNECTION_REFUSED" error in AngularJS is when the application cannot establish a connection to the server. This can be due to various reasons such as incorrect server settings, firewall issues, or network problems.

To troubleshoot and resolve this error in your AngularJS application, you can follow these steps:

1. Check Server Settings: Verify that the server you are trying to connect to is up and running. Ensure that the server address and port are correct in your AngularJS code.

2. Network Connection: Make sure that your network connection is stable and there are no network issues causing the connection to be refused. Try accessing the server from a different device or network to confirm if the issue is with your local setup.

3. Firewall Configuration: Check if there are any firewall settings blocking the connection to the server. Adjust the firewall settings to allow connections to the specific server and port your AngularJS application is trying to access.

4. Use Interceptors: In AngularJS, interceptors are a powerful feature that allows you to intercept and modify HTTP requests before they are sent to the server. You can use interceptors to handle errors like "NET::ERR_CONNECTION_REFUSED" more effectively. Below is an example of how you can create an HTTP interceptor to handle this error:

myApp.factory('httpErrorInterceptor', function ($q) {
    return {
        'responseError': function (rejection) {
            if (rejection.status === -1) {
                // Handle the NET::ERR_CONNECTION_REFUSED error
                console.log('Connection refused error occurred');
            }
            return $q.reject(rejection);
        }
    };
});

myApp.config(function ($httpProvider) {
    $httpProvider.interceptors.push('httpErrorInterceptor');
});

By using an interceptor like the one above, you can catch the "NET::ERR_CONNECTION_REFUSED" error and handle it appropriately in your AngularJS application.

5. Debugging Tools: Use browser developer tools like Chrome DevTools to inspect the network requests and responses. This can help you identify any issues with the HTTP requests and responses that might be causing the connection refused error.

By following these steps and leveraging AngularJS features like interceptors, you can effectively troubleshoot and resolve the "NET::ERR_CONNECTION_REFUSED" error in your AngularJS application. Remember to test your application thoroughly after making any changes to ensure that the error has been successfully resolved.