Reuse body for response

[megashchik]

Greetings!

I have the following problem
I have a fairly heavy query, the answer to which takes up a lot of space
I would like to reuse the buffer for it
This can be done via fasthttp.Post, but you cannot insert a complex request with headers there

It seems like the solution would be something like this

 req := fasthttp.AcquireRequest()
 resp := fasthttp.AcquireResponse()
 defer fasthttp.ReleaseRequest(req)
 defer fasthttp.ReleaseResponse(resp)
 // set headers
 resp.KeepBodyBuffer = true
 err = fasthttp.Do(req, resp)
 if err != nil {
   return err
 }
 resp.KeepBodyBuffer = false
 ...

However, the keepBodyBuffer field is private

[erikdubbelboer]

Why do you want to set keepBodyBuffer to true? Without it memory is also reused, just between different requests using a pool.

[megashchik]

Because I want to use the same big buffer for the response
And after removing it, because such a call rarely works and I don't want a large buffer to end up in the pool
I have a method call where I am asking for a large amount of data still in large chunks

[erikdubbelboer]

So you want to keep reusing the fasthttp.Response multiple times for this heavy call, without calling fasthttp.ReleaseResponse(resp)? Because you have other light calls that you don't want to get mixed up with this heavy call?

If that is the case I understand and I would be open to a pull request that makes KeepBodyBuffer public with some good documentation.