message.headers


请求/响应头对象。

标头名称和值的键值对。 标头名称是小写的。

// 打印如下内容:
//
// { 'user-agent': 'curl/7.22.0',
//   host: '127.0.0.1:8000',
//   accept: '*/*' }
console.log(request.headers);

原始标头中的重复项按以下方式处理,具体取决于标头名称:

  • 重复的 ageauthorizationcontent-lengthcontent-typeetagexpiresfromhostif-modified-sinceif-unmodified-sincelast-modifiedlocationmax-forwardsproxy-authorizationrefererretry-afterserveruser-agent 被丢弃。
  • set-cookie 始终是数组。 重复项被添加到数组中。
  • 对于重复的 cookie 标头,值使用 ; 连接。
  • 对于所有其他标头,值使用 , 连接。

The request/response headers object.

Key-value pairs of header names and values. Header names are lower-cased.

// Prints something like:
//
// { 'user-agent': 'curl/7.22.0',
//   host: '127.0.0.1:8000',
//   accept: '*/*' }
console.log(request.headers);

Duplicates in raw headers are handled in the following ways, depending on the header name:

  • Duplicates of age, authorization, content-length, content-type, etag, expires, from, host, if-modified-since, if-unmodified-since, last-modified, location, max-forwards, proxy-authorization, referer, retry-after, server, or user-agent are discarded.
  • set-cookie is always an array. Duplicates are added to the array.
  • For duplicate cookie headers, the values are joined together with ; .
  • For all other headers, the values are joined together with , .