private async Task <T> GetResponseAsync <T>(string endpointType, bool respondToDeviceAuthChallenge) { T typedResponse = default(T); IHttpWebResponse response; ClientMetrics clientMetrics = new ClientMetrics(); try { clientMetrics.BeginClientMetricsRecord(this.CallState); if (PlatformPlugin.HttpClientFactory.AddAdditionalHeaders) { Dictionary <string, string> clientMetricsHeaders = clientMetrics.GetPreviousRequestRecord(this.CallState); foreach (KeyValuePair <string, string> kvp in clientMetricsHeaders) { this.Client.Headers[kvp.Key] = kvp.Value; } IDictionary <string, string> adalIdHeaders = AdalIdHelper.GetAdalIdParameters(); foreach (KeyValuePair <string, string> kvp in adalIdHeaders) { this.Client.Headers[kvp.Key] = kvp.Value; } } //add pkeyauth header this.Client.Headers[DeviceAuthHeaderName] = DeviceAuthHeaderValue; using (response = await this.Client.GetResponseAsync()) { typedResponse = DeserializeResponse <T>(response.ResponseStream); clientMetrics.SetLastError(null); } } catch (HttpRequestWrapperException ex) { if (!this.isDeviceAuthChallenge(endpointType, ex.WebResponse, respondToDeviceAuthChallenge)) { AdalServiceException serviceEx; if (ex.WebResponse != null) { TokenResponse tokenResponse = TokenResponse.CreateFromErrorResponse(ex.WebResponse); string[] errorCodes = tokenResponse.ErrorCodes ?? new[] { ex.WebResponse.StatusCode.ToString() }; serviceEx = new AdalServiceException(tokenResponse.Error, tokenResponse.ErrorDescription, errorCodes, ex); } else { serviceEx = new AdalServiceException(AdalError.Unknown, ex); } clientMetrics.SetLastError(serviceEx.ServiceErrorCodes); PlatformPlugin.Logger.Error(CallState, serviceEx); throw serviceEx; } else { response = ex.WebResponse; } } finally { clientMetrics.EndClientMetricsRecord(endpointType, this.CallState); } //check for pkeyauth challenge if (this.isDeviceAuthChallenge(endpointType, response, respondToDeviceAuthChallenge)) { return(await HandleDeviceAuthChallenge <T>(endpointType, response)); } return(typedResponse); }