strange behavior of res.writeHeader()

[kng83]

I have code like below:
.get('id', (res,req)=>{
res.writeHeader('Content-Type','text/html; charset=utf-8');
res.writeHeader('Content-Type','text/json');
res.end('');
})
When I send request to localhost:9001/id I get response from server with 2 keys with the same name 'Content-Type' (look on Response Header). It seems like writeHeader() doesn't write the same key but push every key-value pair like new one.
It will be nice to put function like res.removeHeader() from express because it is not possible to remove response Header like uWebSockets: v0.15. I'd like to remove it for safety reasons. I don't want to, that someone knows, what server do I use.

I use windows 7
node 10.15.3
"uWebSockets.js": "github:uNetworking/uWebSockets.js#v15.8.0"

[ghost]

Well you have to make up your mind before you commit ;)

[kng83]

You right.But someone has told me once :It makes sense to follow the docs. Write is not push.

[ghost]

https://unetworking.github.io/uWebSockets.js/generated/interfaces/httpresponse.html#writeheader

Writes key and value to HTTP response.

This is what it does. It writes (in order) what you hand it. That's why lazily written "middlewares" won't fit here - you have to know what you want to write before you write it, well at least you cannot overwrite

[coder456]

Is it necessary to force the uwebsockets header, it would be preferable to not broadcast the software and version running on the server