Handling Compressed Requests

Handling Gzip compressed requests.

To decompress Gzip bodies, you can use gunzipSync from the node:zlib API to decompress and then read the body.

1import { gunzipSync } from 'node:zlib'23Deno.serve(async (req) => {4  try {5    // Check if the request body is gzip compressed6    const contentEncoding = req.headers.get('content-encoding')7    if (contentEncoding !== 'gzip') {8      return new Response('Request body is not gzip compressed', {9        status: 400,10      })11    }1213    // Read the compressed body14    const compressedBody = await req.arrayBuffer()1516    // Decompress the body17    const decompressedBody = gunzipSync(new Uint8Array(compressedBody))1819    // Convert the decompressed body to a string20    const decompressedString = new TextDecoder().decode(decompressedBody)21    const data = JSON.parse(decompressedString)2223    // Process the decompressed body as needed24    console.log(`Received: ${JSON.stringify(data)}`)2526    return new Response('ok', {27      headers: { 'Content-Type': 'text/plain' },28    })29  } catch (error) {30    console.error('Error:', error)31    return new Response('Error processing request', { status: 500 })32  }33})

Edge functions have a runtime memory limit of 150MB. Overly large compressed payloads may result in an out-of-memory error.