Function closeResponse

utils.go:135–148

closeResponse close non nil response with any response Body. convenient wrapper to drain any remaining data on response body. Subsequently this allows golang http RoundTripper to re-use the same connection for future requests.

(resp *http.Response)

// Subsequently this allows golang http RoundTripper
// to re-use the same connection for future requests.
func closeResponse(resp *http.Response) {
	// Callers should close resp.Body when done reading from it.
	// If resp.Body is not closed, the Client's underlying RoundTripper
	// (typically Transport) may not be able to re-use a persistent TCP
	// connection to the server for a subsequent "keep-alive" request.
	if resp != nil && resp.Body != nil {
		// Drain any remaining Body and then close the connection.
		// Without this closing connection would disallow re-using
		// the same connection for future uses.
		//  - http://stackoverflow.com/a/17961593/4465767
		io.Copy(io.Discard, resp.Body)
		resp.Body.Close()
	}
}

var (
	// Hex encoded string of nil sha256sum bytes.