Function read

lib/read.js:40–139

* Read a request into a buffer and parse. * * @param {object} req * @param {object} res * @param {function} next * @param {function} parse * @param {function} debug * @param {object} options * @private

(req, res, next, parse, debug, options)

 */

function read (req, res, next, parse, debug, options) {
  var length
  var opts = options
  var stream

  // flag as parsed
  req._body = true

  // read options
  var encoding = opts.encoding !== null
    ? opts.encoding
    : null
  var verify = opts.verify

  try {
    // get the content stream
    stream = contentstream(req, debug, opts.inflate)
    length = stream.length
    stream.length = undefined
  } catch (err) {
    return next(err)
  }

  // set raw-body options
  opts.length = length
  opts.encoding = verify
    ? null
    : encoding

  // assert charset is supported
  if (opts.encoding === null && encoding !== null && !iconv.encodingExists(encoding)) {
    return next(createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
      charset: encoding.toLowerCase(),
      type: 'charset.unsupported'
    }))
  }

  // read body
  debug('read body')
  getBody(stream, opts, function (error, body) {
    if (error) {
      var _error

      if (error.type === 'encoding.unsupported') {
        // echo back charset
        _error = createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
          charset: encoding.toLowerCase(),
          type: 'charset.unsupported'
        })
      } else {
        // set status code on error
        _error = createError(400, error)
      }

      // unpipe from stream and destroy
      if (stream !== req) {
        unpipe(req)
        destroy(stream, true)