go - Do I copy resp.Body? -

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i learning go , have following code works fine:

resp, err := http.get(url)  // html    ... doc, err := html.parse(resp.body)  // parse html page

now want print out html first parsing:

resp, err := http.get(url)    ... b, err := ioutil.readall(resp.body)  // line added, not working now... doc, err := html.parse(resp.body)

i guess reason resp.body reader, can not call read twice? idea how can correctly? copy resp.body?

because client streams response body network, it's not possible read body twice.

read response []byte doing. create io.reader on bytes html parser using bytes.newreader.

resp, err := http.get(url) ... b, err := ioutil.readall(resp.body)   doc, err := html.parse(bytes.newreader(b))

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