public static async Task GetResponseAsync()

in aliyun-net-credentials/Http/HttpResponse.cs [175:214]
40 lines of code
7 McCabe index (conditional complexity)

        public static async Task<HttpResponse> GetResponseAsync(HttpRequest request, int? timeout = null)
        {
            CheckHttpRequest(request);
            var httpWebRequest = await GetWebRequestAsync(request);
            if (timeout != null)
            {
                httpWebRequest.Timeout = (int)timeout;
            }
            HttpWebResponse httpWebResponse;
            var httpResponse = new HttpResponse(httpWebRequest.RequestUri.AbsoluteUri);
            try
            {
                using (httpWebResponse = (HttpWebResponse)await httpWebRequest.GetResponseAsync())
                {
                    await ParseHttpResponseAsync(httpResponse, httpWebResponse);
                    return httpResponse;
                }
            }
            catch (WebException ex)
            {
                if (ex.Response != null)
                {
                    httpWebResponse = (HttpWebResponse)ex.Response;
                    ParseHttpResponse(httpResponse, httpWebResponse);
                    return httpResponse;
                }
                else
                {
                    throw new CredentialException("Exception",
                        string.Format("The request url is {0} {1}",
                            httpWebRequest.RequestUri == null ? "empty" : httpWebRequest.RequestUri.Host, ex));
                }
            }
            catch (Exception ex)
            {
                throw new CredentialException("Exception",
                    string.Format("The request url is {0} {1}",
                        httpWebRequest.RequestUri == null ? "empty" : httpWebRequest.RequestUri.Host, ex));
            }
        }