go - How to read multiple times from same io.Reader

Question

I want to use request.Body(type io.ReadCloser) which is containing a image.

I dont want to use ioutil.ReadAll() as i want to write this body directly to the file as well as want to decode it, so i only want to use the reference to the content to pass to further function calls,

I tried creating multiple instances of reader for example shown below

package main

import (
    "io/ioutil"
    "log"
    "strings"
)


func main() {
    r := strings.NewReader("some io.Reader stream to be read
")
    a := &r
    b := &r
    log.Println(ioutil.ReadAll(*a))
    log.Println(ioutil.ReadAll(*b))

}

but in second call it always results into nil.

Please help me how can i pass multiple separate reference for the same reader?

Answer 1

Waitting for answers