const http = require('http');
const contentDisposition = require('content-disposition');

http.get('http://example.com/中文文件.txt', (res) => {
  const disposition = res.headers['content-disposition'];
  const encodedFilename = contentDisposition.parse(disposition).parameters.filename;
  const filename = decodeURIComponent(encodedFilename);
  console.log(filename);
});