Function contentstream

lib/read.js:184–205

* Get the content stream of the request. * * @param {Object} req * @param {Function} debug * @param {boolean} inflate * @returns {Object} * @private

(req, debug, inflate)

 * @private
 */
function contentstream (req, debug, inflate) {
  const encoding = (req.headers['content-encoding'] || 'identity').toLowerCase()
  const length = req.headers['content-length']

  debug('content-encoding "%s"', encoding)

  if (inflate === false && encoding !== 'identity') {
    throw createError(415, 'content encoding unsupported', {
      encoding: encoding,
      type: 'encoding.unsupported'
    })
  }

  if (encoding === 'identity') {
    req.length = length
    return req
  }

  const stream = createDecompressionStream(encoding, debug)
  req.pipe(stream)
  return stream
}

/**
 * Create a decompression stream for the given encoding.