Method WriteTo

x/client/client.go:482–502

WriteTo reads the response and then copies its data to the "dest" writer. If the "dest" is a type of HTTP response writer then it writes the content-type and content-length of the original request. Returns the amount of bytes written to "dest".

(ctx context.Context, dest io.Writer, method, urlpath string, payload interface{}, opts ...RequestOption)

//
// Returns the amount of bytes written to "dest".
func (c *Client) WriteTo(ctx context.Context, dest io.Writer, method, urlpath string, payload interface{}, opts ...RequestOption) (int64, error) {
	if payload != nil {
		opts = append(opts, RequestHeader(true, contentTypeKey, contentTypeJSON))
	}

	resp, err := c.Do(ctx, method, urlpath, payload, opts...)
	if err != nil {
		return 0, err
	}
	defer resp.Body.Close()

	if w, ok := dest.(http.ResponseWriter); ok {
		// Copy the content type and content-length.
		w.Header().Set("Content-Type", resp.Header.Get("Content-Type"))
		if resp.ContentLength > 0 {
			w.Header().Set("Content-Length", strconv.FormatInt(resp.ContentLength, 10))
		}
	}

	return io.Copy(dest, resp.Body)
}

// BindResponse consumes the response's body and binds the result to the "dest" pointer,
// closing the response's body is up to the caller.