feat: set headers in individual query and be able to write Buffer data for attachment download

Describe the feature you’d like to request

Make the response a download request so browser can immediate initiate the download right away

e.g.

      //res.header('Content-Disposition', `attachment; filename="${fileName}"`)
      //res.header('Content-Type', fileType)

      //const download = Buffer.from(fileData); // fileData is a string
      //res.end(download)

Describe the solution you’d like to see

able to use res.header() right now res.header() will throw an error that the request has already been sent

same thing with res.end(), where right now it will throw circular json when it is simply a string

Desribe alternate solutions

I don’t know any viable ones, ideally the ones shown above in the solution makes the most sense and the most striaghtforward

Additional information

No response

👨‍👧‍👦 Contributing

• 🙋‍♂️ Yes, I’d be down to file a PR implementing this feature!

[pencilcheck]

I tested with various entry points with various results but one thing for sure, that setHeader didn’t throw any error anymore, very encouraging.

Trying to add custom header “TEST”: “test”

Tested on postman Result: it showed up in the response header field, hooray!!

Tested from browser calling the method using @trpc/client Result: no error but the header didn’t show up in the response header field when viewing from inspector, :\

It is very likely due to CORS, will need to check again

------------- update -------------

Weird, after CORS allowing all headers, the custom headers still didn’t show up.

Also, changing the CORS header somehow made postman not working anymore (request still succeeded but the custom header isn’t set), not sure why

------------- update -------------

sorry for the back and forth but I restarted the server a couple of times and suddenly the header shows up in the browser method now!!

I guess it works just sometimes it is unstable?? But it works now.

I appreciated the help, I guess header and writeHead both sends the requests implicitly?? I really don’t know the implementation details on but setHeader seems to work as expected.

Thanks again.

Look forward to the feature for content-type being available, that would be awesome.

Since I have gotten the feature I will close this one.

[KATT]

Thanks for sharing your process! ♥