---
id: bd7158d8c443edefaeb5bdff
title: Request Header Parser Microservice
challengeType: 4
forumTopicId: 301507
dashedName: request-header-parser-microservice
---

# --description--

Build a full stack JavaScript app that is functionally similar to this: <a href="https://request-header-parser-microservice.freecodecamp.rocks/" target="_blank" rel="noopener noreferrer nofollow">https://request-header-parser-microservice.freecodecamp.rocks/</a>. Working on this project will involve you writing your code using one of the following methods:

-   Clone <a href="https://github.com/freeCodeCamp/boilerplate-project-headerparser/" target="_blank" rel="noopener noreferrer nofollow">this GitHub repo</a> and complete your project locally.
-   Use <a href="https://replit.com/github/freeCodeCamp/boilerplate-project-headerparser" target="_blank" rel="noopener noreferrer nofollow">our Replit starter project</a> to complete your project.
-   Use a site builder of your choice to complete the project. Be sure to incorporate all the files from our GitHub repo.

If you use Replit, follow these steps to set up the project:

-   Start by importing the project on Replit.
-   Next, you will see a `.replit` window.
-   Select `Use run command` and click the `Done` button.

When you are done, make sure a working demo of your project is hosted somewhere public. Then submit the URL to it in the Solution Link field. Optionally, also submit a link to your project's source code in the GitHub Link field.

# --hints--

You should provide your own project, not the example URL.

```js
(getUserInput) => {
  assert(
    !/.*\/request-header-parser-microservice\.freecodecamp\.rocks/.test(
      getUserInput('url')
    )
  );
};
```

A request to `/api/whoami` should return a JSON object with your IP address in the `ipaddress` key.

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/api/whoami').then(
    (data) => assert(data.ipaddress && data.ipaddress.length > 0),
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

A request to `/api/whoami` should return a JSON object with your preferred language in the `language` key.

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/api/whoami').then(
    (data) => assert(data.language && data.language.length > 0),
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

A request to `/api/whoami` should return a JSON object with your software in the `software` key.

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/api/whoami').then(
    (data) => assert(data.software && data.software.length > 0),
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

# --solutions--

```js
/**
  Backend challenges don't need solutions, 
  because they would need to be tested against a full working project. 
  Please check our contributing guidelines to learn more.
*/
```
