Golang http save downloaded file

import (
    "os"
    "net/http"
    "io"
)

func downloadFile(filepath string, url string) (err error) {

  // Create the file
  out, err := os.Create(filepath)
  if err != nil  {
    return err
  }
  defer out.Close()

  // Get the data
  resp, err := http.Get(url)
  if err != nil {
    return err
  }
  defer resp.Body.Close()

  // Check server response
  if resp.StatusCode != http.StatusOK {
    return fmt.Errorf("bad status: %s", resp.Status)
  }

  // Writer the body to file
  _, err = io.Copy(out, resp.Body)
  if err != nil  {
    return err
  }

  return nil
}

Source: stackoverflow.com

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