How does nodejs add header? to this url before jumping to another url

I want to download directly when I open a link. By default, opening a link will automatically open a preview in the browser. Can nodejs add header to the url before opening the link?

exports.download = async (ctx,next) => {
    ctx.type = "application/octet-stream"
    ctx.set("Content-Disposition","attachment;filename=name")//
    ctx.redirect(ctx.request.query.path) //
}

I am currently using redirects without adding this header.
if I write this url in a route in iframe form, what I download is the code for the iframe tag.

Http javascript node.js

Mar.18,2021

adding a download attribute to the tag is the most convenient, quick and pollution-free way to solve the problem.

It is useless to add this header to the

redirection, nor is Content-Type . The browser only recognizes the header of the final jump target. It has nothing to do with node, this is the pot of HTTP agreement. In fact, it is easy to understand that redirecting can be cross-domain, and there is a big security problem if tampering with the request header is allowed.

if you have to change your head, you can only be a server agent;

if you want to cross-domain without changing your head, first configure CORS, then fetch get Blob, then URL.createObjectURL , and then insert it to href .

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Express routing problem
I am a novice. I have just come into contact with the node.js and express frameworks. I have configured routing according to the online tutorial, but there are some problems, as follows: first of all, the file structure is as follows: index.js:...

Http javascript node.js express

Mar.25,2021

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-42a1779-5d31.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-42a1779-5d31.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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