CODEWITHSUNDEEP
node.jshttp
MikiBelavista
MikiBelavista

Reputation: 2758

How Node.js http.createServer actually works?

I can not understand createServer in Node.js This is the part of the code that makes me feel stupid

http.createServer((req, res) => {
 let viewUrl = getViewUrl(req.url);
 fs.readFile(viewUrl, (error, data) => {
   if (error) {
    res.writeHead(httpStatus.NOT_FOUND);
     res.write("<h1>FILE NOT FOUND</h1>");
     Handle errorswith a 404
}

This Incoming Message object, how do we know that it has .url method? From documentation

Specifies the IncomingMessage class to be used. Useful for extending the original IncomingMessage. Default: IncomingMessage

Where is req.url actually defined?

Upvotes: 0

Views: 593

Answers (2)

jfriend00
jfriend00

Reputation: 708146

The callback to http.createServer() is called when the request event occurs on the server. That event is documented here and the first argument to that event is an http.IncomingMessage object which is documented here. That object has a number of properties and methods including the .url property described here.

Upvotes: 2

SundaramJ
SundaramJ

Reputation: 111

I didnt try what is the output of req.url. But it should come current url.

For your reference req is an object, which has url attribute. ie.

const req = {
    url : ''
}

I will recommend you to use express js http://expressjs.com framework instead of node js core. So you can easily achive lot of things with minimal time.

Upvotes: 1

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