POST data using the Content-Type multipart/form-data

Question

I\'m trying to upload images from my computer to a website using go. Usually, I use a bash script that sends a file and a key to the server:

curl -F \"image         


        

Answer 1

Send file from one service to another:

func UploadFile(network, uri string, f multipart.File, h *multipart.FileHeader) error {

    buf := new(bytes.Buffer)
    writer := multipart.NewWriter(buf)

    part, err := writer.CreateFormFile("file", h.Filename)

    if err != nil {
        log.Println(err)
        return err
    }

    b, err := ioutil.ReadAll(f)

    if err != nil {
        log.Println(err)
        return err
    }

    part.Write(b)
    writer.Close()

    req, _ := http.NewRequest("POST", uri, buf)

    req.Header.Add("Content-Type", writer.FormDataContentType())
    client := &http.Client{}
    resp, err := client.Do(req)

    if err != nil {
        return err
    }
    defer resp.Body.Close()

    b, _ = ioutil.ReadAll(resp.Body)
    if resp.StatusCode >= 400 {
        return errors.New(string(b))
    }
    return nil
}