public override Task WriteToStreamAsync(Type type,
object value,
Stream writeStream,
HttpContent content,
TransportContext transportContext,
CancellationToken cancellationToken)
{
var httpError = value as HttpError;
if (httpError == null)
{
throw new ArgumentException("value is not HttpError instance");
}
var problemJsonResponse = new ProblemJsonModel
{
TypeUri = "about:blank",
Detail = httpError.ExceptionMessage,
Instance = string.Format("urn:ietf:rfc:draft-nottingham-http-problem-06:x-exception:{0}", httpError.ExceptionType),
DebugInfo = httpError.StackTrace,
Title = httpError.Message
};
return(base.WriteToStreamAsync(typeof(ProblemJsonModel), problemJsonResponse, writeStream, content, transportContext, cancellationToken));
}
private static async Task WriteResponse(IOwinResponse owinResponse, ProblemJsonModel problemJsonResponse)
{
var message = JsonConvert.SerializeObject(problemJsonResponse);
var bytes = Encoding.UTF8.GetBytes(message);
owinResponse.Headers.Add("Content-type", new[] { ProblemJsonContentType, "charset=utf-8" });
await owinResponse.Body.WriteAsync(bytes, 0, bytes.Length);
}
private ProblemJsonModel CreateResponse(HttpResponseException exception)
{
var problemJsonResponse = new ProblemJsonModel
{
TypeUri = "about:blank",
Status = (int)exception.Response.StatusCode,
Instance = string.Format("urn:ietf:rfc:draft-nottingham-http-problem-06:x-exception:{0}", exception.GetType().FullName),
};
if (_developerMode)
{
problemJsonResponse.Detail = exception.Message;
problemJsonResponse.DebugInfo = exception.StackTrace;
problemJsonResponse.Title = exception.Message;
}
return(problemJsonResponse);
}
