标头对象

¥Headers object

标头在 JavaScript 对象上表示为自有的属性。属性键将被序列化为小写。属性值应该是字符串（如果不是，它们将被强制转换为字符串）或 Array 个字符串（以便为每个标头字段发送一个以上的值）。

¥Headers are represented as own-properties on JavaScript objects. The property keys will be serialized to lower-case. Property values should be strings (if they are not they will be coerced to strings) or an Array of strings (in order to send more than one value per header field).

const headers = {
  ':status': '200',
  'content-type': 'text-plain',
  'ABC': ['has', 'more', 'than', 'one', 'value']
};

stream.respond(headers); 拷贝

传给回调函数的标头对象将有一个 null 原型。这意味着 Object.prototype.toString() 和 Object.prototype.hasOwnProperty() 等普通 JavaScript 对象方法将不起作用。

¥Header objects passed to callback functions will have a null prototype. This means that normal JavaScript object methods such as Object.prototype.toString() and Object.prototype.hasOwnProperty() will not work.

对于传入的标头：

¥For incoming headers:

• :status 标头转换为 number。

  ¥The :status header is converted to number.

• :status、:method、:authority、:scheme、:path、:protocol、age、authorization、access-control-allow-credentials、access-control-max-age、access-control-request-method、content-encoding、content-language、content-length、content-location、content-md5、content-range、content-type、date、dnt、etag、expires、from、host 的副本， if-match、if-modified-since、if-none-match、if-range、if-unmodified-since、last-modified、location、max-forwards、proxy-authorization、range、referer、retry-after、tk、upgrade-insecure-requests、user-agent 或 x-content-type-options 被丢弃。

  ¥Duplicates of :status, :method, :authority, :scheme, :path, :protocol, age, authorization, access-control-allow-credentials, access-control-max-age, access-control-request-method, content-encoding, content-language, content-length, content-location, content-md5, content-range, content-type, date, dnt, etag, expires, from, host, if-match, if-modified-since, if-none-match, if-range, if-unmodified-since, last-modified, location, max-forwards, proxy-authorization, range, referer,retry-after, tk, upgrade-insecure-requests, user-agent or x-content-type-options are discarded.

• set-cookie 始终是数组。重复项被添加到数组中。

  ¥set-cookie is always an array. Duplicates are added to the array.

• 对于重复的 cookie 标头，这些值用 '; 连接在一起'.

  ¥For duplicate cookie headers, the values are joined together with '; '.

• 对于所有其他标头，值使用 ',' 连接。

  ¥For all other headers, the values are joined together with ', '.

const http2 = require('node:http2');
const server = http2.createServer();
server.on('stream', (stream, headers) => {
  console.log(headers[':path']);
  console.log(headers.ABC);
}); 拷贝