Function buildRequestWithTrustProxy

lib/request.js:102–150

(R, trustProxy)

}

function buildRequestWithTrustProxy (R, trustProxy) {
  const _Request = buildRegularRequest(R)
  const proxyFn = getTrustProxyFn(trustProxy)

  // This is a more optimized version of decoration
  _Request[kHasBeenDecorated] = true

  Object.defineProperties(_Request.prototype, {
    ip: {
      get () {
        const addrs = proxyAddr.all(this.raw, proxyFn)
        return addrs[addrs.length - 1]
      }
    },
    ips: {
      get () {
        return proxyAddr.all(this.raw, proxyFn)
      }
    },
    host: {
      get () {
        const socket = this.raw.socket
        if (this.headers['x-forwarded-host'] && socket != null && proxyFn(socket.remoteAddress, 0)) {
          return getLastEntryInMultiHeaderValue(this.headers['x-forwarded-host'])
        }
        /**
         * The last fallback supports the following cases:
         * 1. http.requireHostHeader === false
         * 2. HTTP/1.0 without a Host Header
         * 3. Headers schema that may remove the Host Header
         */
        return this.headers.host ?? this.headers[':authority'] ?? ''
      }
    },
    protocol: {
      get () {
        const socket = this.raw.socket
        if (this.headers['x-forwarded-proto'] && socket != null && proxyFn(socket.remoteAddress, 0)) {
          return getLastEntryInMultiHeaderValue(this.headers['x-forwarded-proto'])
        }
        if (this.socket) {
          return this.socket.encrypted ? 'https' : 'http'
        }
      }
    }
  })

  return _Request
}

function assertsRequestDecoration (request, name) {
  if (!decorators.hasKey(request, name) && !decorators.exist(request, name)) {