API and Microservices project 2 (Request Header Parser)

Contributors
1

What is your hint or solution suggestion?
This is a simple project that wants you to process the information provided by the computer to the browser and send it back
sample output:

{
  "ipaddress": "42.193.243.32",
  "language": "en-US,en;q=0.9",
  "software": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36"
}

step 1:
making an API endpoint

app.get('api/whoami', (req,res) => {...})

step 2:
getting the IP address.

when you use req.header, it will return an obj with data about the client
the raw output will look something like this

"42.182.219.253,::ffff:10.10.10.51,::ffff:10.10.80.165"

in order to get the IP that meets the requirements, you need to process it with the code below

let ip = req.headers["x-forwarded-for"].split(",")[0]

this piece of code gets the IP, and then extracts the first element

step 3:
getting the language

the req.headers also provides data about the languages that is accepted by the client

code below gets the language

let lang = req.headers["accept-language"]

step 4:
getting the user-agent

code below will return the user agent (browser info and OS)

let software = req.headers["user-agent"]

step 5:
send the data out as JSON

res.json({ipaddress: ip, language: lang, software: software}

full code:

app.get('/api/whoami', (req,res) => {
  
  let ip = req.headers["x-forwarded-for"].split(",")[0]
  let lang = req.headers["accept-language"]
  let software = req.headers["user-agent"]
  
  res.json({ipaddress: ip, language: lang, software : software, x: req.headers['x-forwarded-for']})
  
})

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Challenge: Request Header Parser Microservice

Link to the challenge: