Nodejs https.request头方法问题

Question

nodejs有问题，https.request返回

const checkStatus = await https
  .request(
    {
      method: 'HEAD',
      host: 'host',
      path: 'path',
    },
    (response) => {
      const { statusCode } = response;
      // idk
    },
  )
  .on('error', (e) => {
    if (e) {
      throw new Error();
    }
  })
  .end();

我可以以某种方式在 checkStatus 变量中返回 statusCode 吗？

Answer 1

您只能有用

await

 一个承诺，但 

https.request

 不会返回承诺。

要么：

• 将其包裹在new Promise或中
替换为默认支持promise的库（如axios或node-fetch）

(async function () {

    const url = "https://jsonplaceholder.typicode.com/todos/1";
    const response = await axios.head(url);
    console.log(response.status);

})();

<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.21.1/axios.min.js"></script>

Answer 2

只需将其包裹到

Promise

中即可。例如：

import https from "https";

const response = await new Promise((resolve, reject) => {
  const agent = new https.Agent({ keepAlive: false });
  https
    .request("https://example.com", { method: "HEAD", agent: agent }, (res) => {
      resolve(res);
    })
    .on("error", (err) => {
      reject(err);
    })
    .end();
});

console.log(response.statusCode);
console.log(response.headers);