req.ip and req.hostname in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the client's IP address using Express.

Express

app.get('/client-ip', (req, res) => {
  const clientIp = req.[1];
  res.send(`Client IP is: ${clientIp}`);
});

Drag options to blanks, or click blank then click option'

Aip

Bhostname

Cpath

Durl

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.hostname instead of req.ip

Trying to access req.url for IP

The req.ip property in Express gives the client's IP address.

2fill in blank

medium

Complete the code to get the hostname from the request in Express.

Express

app.get('/host', (req, res) => {
  const hostName = req.[1];
  res.send(`Hostname is: ${hostName}`);
});

Drag options to blanks, or click blank then click option'

Ahostname

Bip

Cprotocol

Dmethod

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.ip instead of req.hostname

Using req.protocol to get hostname

The req.hostname property gives the hostname from the request.

3fill in blank

hard

Fix the error in accessing the client's IP address in this Express route.

Express

app.get('/fix-ip', (req, res) => {
  const clientIp = req.[1];
  res.send(`IP: ${clientIp}`);
});

Drag options to blanks, or click blank then click option'

AgetIp

Bhostname

Cip

DipAddress

Attempts:

3 left

💡 Hint

Common Mistakes

Calling req.ip as a function

Using non-existent methods like req.getIp()

req.ip is a property, not a function, so no parentheses are needed.

4fill in blank

hard

Fill both blanks to create a route that sends both IP and hostname.

Express

app.get('/info', (req, res) => {
  const ip = req.[1];
  const host = req.[2];
  res.send(`IP: ${ip}, Hostname: ${host}`);
});

Drag options to blanks, or click blank then click option'

Aip

Bhostname

Curl

Dmethod

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping ip and hostname properties

Using req.url or req.method instead

Use req.ip for IP and req.hostname for hostname.

5fill in blank

hard

Fill all three blanks to log IP, hostname, and request method in Express.

Express

app.use((req, res, next) => {
  console.log('IP:', req.[1]);
  console.log('Host:', req.[2]);
  console.log('Method:', req.[3]);
  next();
});

Drag options to blanks, or click blank then click option'

Aip

Bhostname

Cmethod

Durl

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.url instead of req.method

Mixing up hostname and url

Use req.ip for IP, req.hostname for hostname, and req.method for HTTP method.