如何将图像写入请求正文

Question

I have a jpeg image.Image and I want to decode to a request body. Simplified below, it doesn't seem to finish the request ever. The program hangs.

  r, w := io.Pipe()
  jpeg.Encode(w, img, &jpeg.Options{ 80 })

  req, e := http.NewRequest("PUT", myUrl, r)
  if e != nil {
    return nil, e
  }
  http.DefaultClient.Do(req)

How can I write an image to the request body?

Answer 1

Just use a buffer

var w bytes.Buffer

jpeg.Encode(&w, img, &jpeg.Options{80})

req, e := http.NewRequest("PUT", myUrl, &w)
if e != nil {
    log.Fatal(e)
}
http.DefaultClient.Do(req)