Edge Functions

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.

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import { gunzipSync } from 'node:zlib'
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Deno.serve(async (req) => {
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  try {
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    // Check if the request body is gzip compressed
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    const contentEncoding = req.headers.get('content-encoding')
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    if (contentEncoding !== 'gzip') {
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      return new Response('Request body is not gzip compressed', {
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        status: 400,
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      })
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    }
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    // Read the compressed body
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    const compressedBody = await req.arrayBuffer()
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    // Decompress the body
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    const decompressedBody = gunzipSync(new Uint8Array(compressedBody))
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    // Convert the decompressed body to a string
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    const decompressedString = new TextDecoder().decode(decompressedBody)
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    const data = JSON.parse(decompressedString)
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    // Process the decompressed body as needed
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    console.log(`Received: ${JSON.stringify(data)}`)
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    return new Response('ok', {
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      headers: { 'Content-Type': 'text/plain' },
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    })
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  } catch (error) {
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    console.error('Error:', error)
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    return new Response('Error processing request', { status: 500 })
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  }
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})