private async Task <string> GetAlexaSecurityInfoAsync(Uri alexaUrl, string accessToken)
{
string bodyText = null;
using (HttpClient httpClient = new HttpClient())
{
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
_logger?.LogDebug("Setting bearer token '{0}'", accessToken);
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
_logger?.LogDebug("Setting host header value '{0}'", alexaUrl.Host);
httpClient.DefaultRequestHeaders.Host = alexaUrl.Host;
_logger?.LogDebug("Executing GET against '{0}'", alexaUrl);
HttpRequestMessage reqMessage = new HttpRequestMessage(HttpMethod.Get, alexaUrl);
HttpResponseMessage respMessage = null;
try
{
respMessage = await httpClient.SendAsync(reqMessage);
}
catch (Exception ex)
{
string errMsg = string.Format("Error calling {0}", alexaUrl);
_logger?.LogError(ErrorEventCatalog.USER_SECURITYINVOCATION, ex, errMsg);
throw new AlexaSecurityException(errMsg);
}
if (respMessage.StatusCode == System.Net.HttpStatusCode.OK)
{
bodyText = await respMessage.Content.ReadAsStringAsync();
_logger?.LogInformation($"Good response: {bodyText}");
}
else
{
string alexaLogMessage = null;
int httpStatus = (int)respMessage.StatusCode;
//200 OK Successfully got the address associated with this deviceId.
//204 No Content The query did not return any results.
//401 Unauthorized authentication token timed out
//403 Forbidden The authentication token is invalid or doesn't have access to the resource.
//405 Method Not Allowed The method is not supported.
//429 Too Many Requests The skill has been throttled due to an excessive number of requests.
//500 Internal Error An unexpected error occurred.
if (respMessage.StatusCode == System.Net.HttpStatusCode.NoContent)
{
// TODO throw an informative error here
throw new AlexaSecurityException("No content returned", System.Net.HttpStatusCode.NoContent);
}
else
{
string respText = null;
try
{
respText = await respMessage.Content.ReadAsStringAsync();
}
catch (Exception ex)
{
alexaLogMessage = string.Format("Error deserializing response from {0}", alexaUrl);
_logger?.LogError(alexaLogMessage, ex);
throw new AlexaSecurityException(alexaLogMessage, respMessage.StatusCode, ex);
}
AlexaSecurityErrorResponse errResp = null;
try
{
errResp = JsonConvert.DeserializeObject <AlexaSecurityErrorResponse>(respText);
}
catch (Exception ex)
{
string errMsg = "Could not deserialized Alexa Error Response";
_logger?.LogWarning(ErrorEventCatalog.ALEXA_ERROR_DESERIALIZATION, ex, errMsg);
throw new AlexaSecurityException(errMsg, respMessage.StatusCode, ex);
}
if (errResp == null)
{
alexaLogMessage = string.Format("Error {0}: {1}", httpStatus, respText);
_logger?.LogError(alexaLogMessage);
throw new AlexaSecurityException(respText, respMessage.StatusCode);
}
else
{
alexaLogMessage = string.Format("Error {0}: Type: {1}, Message: {2}", httpStatus, errResp.Type, errResp.Message);
_logger?.LogError(alexaLogMessage);
throw new AlexaSecurityException(errResp, respMessage.StatusCode);
}
}
}
}
return(bodyText);
}
/// <summary>
/// Initializes a new instance of the System.Exception class with a specified error message.
/// </summary>
/// <param name="message">The message that describes the error.</param>
/// <param name="errorType">Type of the error, according to the Alexa error response message.</param>
/// <param name="statusCode">Http status code of the Alexa Http response.</param>
public AlexaSecurityException(AlexaSecurityErrorResponse errResponse, HttpStatusCode statusCode) : base(errResponse.Message)
{
_errorType = errResponse.Type;
_code = errResponse.Code;
_statusCode = statusCode;
}
