Introduction to Raw-Body Module

The raw-body module is a vital tool for developers working with Node.js, designed to efficiently read and parse the body of a readable stream. Whether you are dealing with JSON payloads, text, or other types of data, raw-body can handle it all.

Key APIs of Raw-Body Module

Installation

npm install raw-body

Example API Usage

Basic Usage

const getRawBody = require('raw-body') const http = require('http')
const server = http.createServer((req, res) => {
   getRawBody(req, (err, body) => {
       if (err) {
           res.statusCode = 500
           res.end('Error reading body')
           return
       }
       res.end(body)
   })
})
server.listen(3000)

Advanced Options

const getRawBody = require('raw-body')
getRawBody(req, {
   length: req.headers['content-length'],
   limit: '1mb',
   encoding: 'utf8'
}, (err, body) => {
   if (err) {
       console.error(err)
       return
   }
   console.log(body)
})

Handling Different Data Encodings

const getRawBody = require('raw-body') const http = require('http')
const server = http.createServer((req, res) => {
   getRawBody(req, { encoding: 'base64' }, (err, body) => {
       if (err) {
           res.statusCode = 500
           res.end('Error reading body')
           return
       }
       res.end(body)
   })
})
server.listen(3000)

Usage with Promises

const getRawBody = require('raw-body')
async function readBody(req) {
   try {
       const body = await getRawBody(req, { encoding: true })
       console.log(body)
   } catch (err) {
       console.error(err)
   }
}

Complete Application Example

const getRawBody = require('raw-body') const express = require('express') const app = express()
app.post('/data', async (req, res) => {
   try {
       const body = await getRawBody(req)
       res.status(200).send(body)
   } catch (err) {
       res.status(400).send('Error reading body')
   }
})
app.listen(3000, () => {
   console.log('Server running on port 3000')
})

The raw-body module proves to be a powerful and flexible utility, handling diverse data formats efficiently and simplifying the process of reading raw request bodies in Node.js applications.

Whether you’re dealing with small payloads or need precise control over input lengths and encodings, integrating raw-body in your applications can streamline your development process and enhance your resource handling capabilities.

To explore more about its functionalities and advanced use-cases, check out the official raw-body documentation on GitHub.

Happy Coding!

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