Skip to main content

Part-2 VueJS JWT Auth Cookie - Refresh Token Usage

Part-1 we implemented user login and logout using the HttpOnly Jwt cookie in our Vue application. In this article, we are going to understand the refresh token(refresh token also stored in HttpOnly Jwt Cookie).

Gaurd Routes:

One of the important cases we always need to consider while implementing authentication is guard routes between user authenticated and non authenticates cases.

Suppose an authenticated user can't access the login page. Similarly, a non-authenticated user can't access the dashboard page(any page that needs user authentication). So to fix this kind of case we have to define our navigation rules at our route guard.

But before implementing our route guard logic, we need to set one flag in browser local storage. The flag we will add represents that the user is authenticated. This flag helps us to avoid unnecessary calls to the profile API if the user reloads the application.

Now let's add the flag to browser local storage on user authenticated. So let's update the store action method 'loginApi'.
src/store/module/auth.js:
const actions = {
// code hiden for display
  async loginApi({ commit }, payload) {
    const response = await axios
      .post("http://localhost:3000/auth/login", payload, {
        withCredentials: true,
        credentials: "include",
      })
      .catch((err) => {
        console.log(err);
      });

    if (response && response.data) {
      localStorage.setItem("isAuthenticated", "true");
      commit("setLoginApiStatus", "success");
    } else {
      commit("setLoginApiStatus", "failed");
    }
  }
};
  • (Line: 14) Adding a flag to browser local storage.
Now delete the flag on user logout.
src/store/modules/auth.js:
const actions = {
// hidden code for display purpose
  async userLogout({ commit }) {
    const response = await axios
      .get("http://localhost:3000/logout", {
        withCredentials: true,
        credentials: "include",
      })
      .catch((err) => {
        console.log(err);
      });

    if (response && response.data) {
      commit("setLogout", true);
      localStorage.removeItem("isAuthenticated");
    } else {
      commit("setLogout", false);
    }
  },
};
  • (Line: 15) Remove the authentication flag from the browser's local storage.
So in Part-1, we implemented a partial navigation route guard, now here we are going to update its complete logic.
src/appRouter.js:
routeConfig.beforeEach(async (to, from, next) => {
  let userProfile = store.getters["auth/getUserProfile"];
  let isAuthenticated = localStorage.getItem("isAuthenticated");
  if (userProfile.id === 0 && isAuthenticated) {
    await store.dispatch("auth/userProfile");
    userProfile = store.getters["auth/getUserProfile"];
  }

  if (to.meta.requiredAuth) {
    if (userProfile.id === 0) {
      return next({ path: "/login" });
    }
  } else {
    if (userProfile.id !== 0) {
      return next({ path: "/dashboard" });
    }
  }
  return next();
});
  • Here invoking profile API only when no user data from store and authentication flag exist in browser storage.
  • Handle navigation routes based on the user information and guarding them.
Now test our sample, we can feel our routes have been guarded effectively.

Refresh Token:

Generally, the refresh token is to regenerate the expired jwt access token. So here our nestjs API generates a jwt access token and refresh token inside of the cookie. So from the client-side we simply calling refresh token endpoint is enough.

Our server refresh token endpoint looks like below.
http://localhost:3000/refresh-token

Invoke The Refresh Token Endpoint:

In any client-side application the best and recommended approach to invoking the refresh token endpoint to use the interceptors.

So interceptors are used to bypass the request. If any secured api got unauthorized response, the interceptor will immediately invoke the refresh token endpoint and then again invokes the secured api call which is failed initially.

So let's create an interceptor in the new folder like 'shared'.
shared/jwt.interceptor.js:
import axios from "axios";

const jwtInterceptor = axios.create({});

jwtInterceptor.interceptors.request.use((config) => {
  return config;
});

jwtInterceptor.interceptors.response.use(
  (response) => {
    return response;
  },
  async (error) => {
    if (error.response.status === 401) {
     var response = await axios.get(
        "http://localhost:3000/refresh-token",
        {
          withCredentials: true,
        }
      )
      .catch((err) => {
        return Promise.reject(err);
      });
      if(response && response.data){
        return axios(error.config);

      }
      else{
        return Promise.reject(error);
      }
    } else {
      return Promise.reject(error);
    }
  }
);

export default jwtInterceptor;
  • (Line: 9-35) On receiving the response, if the interceptor receives status like '401', which means the jwt token expired. Then invoke the refresh token api, on the success of the refresh token API, we will re-initiate the api that is actually failed.
So that's all about the cookie-based refresh token usage in our vue application.

Video Session:

 

Support Me!
Buy Me A Coffee PayPal Me

Wrapping Up:

Hopefully, I think this article delivered some useful information on refresh token usage. I love to have your feedback, suggestions, and better techniques in the comment section below.

Refer:

Follow Me:

Comments

Popular posts from this blog

.NET6 Web API CRUD Operation With Entity Framework Core

In this article, we are going to do a small demo on AspNetCore 6 Web API CRUD operations. What Is Web API: Web API is a framework for building HTTP services that can be accessed from any client like browser, mobile devices, desktop apps. In simple terminology API(Application Programming Interface) means an interface module that contains a programming function that can be requested via HTTP calls to save or fetch the data for their respective clients. Some of the key characteristics of API: Supports HTTP verbs like 'GET', 'POST', 'PUT', 'DELETE', etc. Supports default responses like 'XML' and 'JSON'. Also can define custom responses. Supports self-hosting or individual hosting, so that all different kinds of apps can consume it. Authentication and Authorization are easy to implement. The ideal platform to build REST full services. Create A .NET6 Web API Application: Let's create a .Net6 Web API sample application to accomplish our

Blazor WebAssembly Custom Authentication From Scratch

In this article, we are going to explore and implement custom authentication from the scratch. In this sample, we will use JWT authentication for user authentication. Main Building Blocks Of Blazor WebAssembly Authentication: The core concepts of blazor webassembly authentication are: AuthenticationStateProvider Service AuthorizeView Component Task<AuthenticationState> Cascading Property CascadingAuthenticationState Component AuthorizeRouteView Component AuthenticationStateProvider Service - this provider holds the authentication information about the login user. The 'GetAuthenticationStateAsync()' method in the Authentication state provider returns user AuthenticationState. The 'NotifyAuthenticationStateChaged()' to notify the latest user information within the components which using this AuthenticationStateProvider. AuthorizeView Component - displays different content depending on the user authorization state. This component uses the AuthenticationStateProvider

How Response Caching Works In Asp.Net Core

What Is Response Caching?: Response Caching means storing of response output and using stored response until it's under it's the expiration time. Response Caching approach cuts down some requests to the server and also reduces some workload on the server. Response Caching Headers: Response Caching carried out by the few Http based headers information between client and server. Main Response Caching Headers are like below Cache-Control Pragma Vary Cache-Control Header: Cache-Control header is the main header type for the response caching. Cache-Control will be decorated with the following directives. public - this directive indicates any cache may store the response. private - this directive allows to store response with respect to a single user and can't be stored with shared cache stores. max-age - this directive represents a time to hold a response in the cache. no-cache - this directive represents no storing of response and always fetch the fr

.Net5 Web API Managing Files Using Azure Blob Storage

In this article, we are going to understand the different file operations like uploading, reading, downloading, and deleting in .Net5 Web API application using Azure Blob Storage. Azure Blob Storage: Azure blob storage is Microsoft cloud storage. Blob storage can store a massive amount of file data as unstructured data. The unstructured data means not belong to any specific type, which means text or binary data. So something like images or pdf or videos to store in the cloud, then the most recommended is to use the blob store. The key component to creating azure blob storage resource: Storage Account:- A Storage account gives a unique namespace in Azure for all the data we will save. Every object that we store in Azure Storage has an address. The address is nothing but the unique name of our Storage Account name. The combination of the account name and the Azure Storage blob endpoint forms the base address for each object in our Storage account. For example, if our Storage Account is n

A Small Guide On NestJS Queues

NestJS Application Queues helps to deal with application scaling and performance challenges. When To Use Queues?: API request that mostly involves in time taking operations like CPU bound operation, doing them synchronously which will result in thread blocking. So to avoid these issues, it is an appropriate way to make the CPU-bound operation separate background job.  In nestjs one of the best solutions for these kinds of tasks is to implement the Queues. For queueing mechanism in the nestjs application most recommended library is '@nestjs/bull'(Bull is nodejs queue library). The 'Bull' depends on Redis cache for data storage like a job. So in this queueing technique, we will create services like 'Producer' and 'Consumer'. The 'Producer' is used to push our jobs into the Redis stores. The consumer will read those jobs(eg: CPU Bound Operations) and process them. So by using this queues technique user requests processed very fastly because actually

.Net5 Web API Redis Cache Using StackExchange.Redis.Extensions.AspNetCore Library

In this article, we are going to explore the integration of Redis cache in .Net5 Web API application using the 'StackExchange.Redis.Exntensions' library. Note:- Microsoft has introduced an 'IDistributedCache' interface in dotnet core which supports different cache stores like In-Memory, Redis, NCache, etc. It is simple and easy to work with  'IDistributedCache', for the Redis store with limited features but if we want more features of the Redis store we can choose to use 'StackExchange.Redis.Extensions'.  Click here for Redis Cache Integration Using IDistributedCache Interface . Overview On StackExchange.Redis.Extnesions Library: The 'StackExchange.Redis.Extension' library extended from the main library 'StackExchange.Redis'. Some of the key features of this library like: Default serialization and deserialization. Easy to save and fetch complex objects. Search key. Multiple Database Access Setup Redis Docker Instance: For this sampl

Usage Of CancellationToken In Asp.Net Core Applications

When To Use CancellationToken?: In a web application request abortion or orphan, requests are quite common. On users disconnected by network interruption or navigating between multiple pages before proper response or closing of the browser, tabs make the request aborted or orphan. An orphan request can't deliver a response to the client, but it will execute all steps(like database calls, HTTP calls, etc) at the server. Complete execution of an orphan request at the server might not be a problem generally if at all requests need to work on time taking a job at the server in those cases might be nice to terminate the execution immediately. So CancellationToken can be used to terminate a request execution at the server immediately once the request is aborted or orphan. Here we are going to see some sample code snippets about implementing a CancellationToken for Entity FrameworkCore, Dapper ORM, and HttpClient calls in Asp.NetCore MVC application. Note: The sample codes I will show in

Endpoint Routing In Asp.Net Core

How Routing Works In  Core 2.1 And Below Versions?: In Asp.Net Core routing is configured using app.UseRouter() or app.UseMvc() middleware. app.UseMvc(routes => { routes.MapRoute( name: "default", template: "{controller=Home}/{action=Index}/{id?}"); }); Here in Dotnet Core version 2.1 or below versions on the execution of route middleware request will be navigated appropriate controller matched to the route. An operation or functionality which is dependent on route URL or route values and that need to be implemented before the execution of route middleware can be done by accessing the route path from the current request context as below app.Use(async (context, next) => { if(context.Request.Path.Value.IndexOf("oldvehicle") != -1) { context.Response.Redirect("vehicle"); } else { await next(); } }); app.UseMvc(routes => { routes.MapRoute( name: "vehicleRoute", template: "vehicle", defaul

Asp.Net Core MVC Form Validation Techniques

Introduction: Form validations in any applications are like assures that a valid data is storing on servers. All programing frameworks have their own individual implementations for form validations. In Dotnet Core MVC application server-side validations carried on by the models with the help of Data Annotations and the client-side validations carried by the plugin jQuery Unobtrusive Validation. jQuery Unobtrusive Validation is a custom library developed by Microsoft based on the popular library  jQuery Validate . In this article, we are going to learn how the model validation and client-side validation works in Asp.Net Core MVC Application with sample examples. Getting Started: Let's create an Asp.Net Core MVC application project using preferred editors like Microsoft Visual Studio or Microsoft Visual Studio Code. Here I'm using Visual Studio. Let's create an MVC controller and name it as 'PersonController.cs' and add an action method as bel

NestJS File Upload

In this article, we are going to understand the steps to create a file uploading endpoint in the NestJS application. Key Features In NestJS File Upload: Let us know some key features of NestJS file upload before implementing a sample application. FileInterceptor: The 'FileInterceptor' will be decorated on top of the file upload endpoint. This interceptor will read single file data from the form posted to the endpoint. export declare function FilesInterceptor(fieldName: string, localOptions?: MulterOptions): Type<NestInterceptor>; Here we can observe the 'fieldName' first input parameter this value should be a match with our 'name' attribute value on the form file input field. So our interceptor read our files that are attached to the file input field. Another input parameter of 'MulterOptions' that provides configuration like file destination path, customizing file name, etc. FilesInterceptor: The 'FilesInterceptor' will be decorated on t