t.Errorf("Server got %q, %v; want %q", slurp, err, reqBody(n))
				}
			}
			body := fmt.Sprintf("Response number %d", n)
			v := []byte(strings.Replace(fmt.Sprintf(`HTTP/1.1 %s
Date: Thu, 28 Feb 2013 17:55:41 GMT

HTTP/1.1 200 OK
Content-Type: text/html
Echo-Request-Id: %s
Content-Length: %d

%s`, resCode, id, len(body), body), "\n", "\r\n", -1))
			w.Write(v)