public RequestDelegate Create()
{
return(async context =>
{
context.Response.StatusCode = StatusCodes.Status500InternalServerError;
context.Response.ContentType = "text/html";
var exceptionType = context.Features.GetType();
Microsoft.AspNetCore.Diagnostics.IExceptionHandlerFeature ex = context.Features.Get <Microsoft.AspNetCore.Diagnostics.IExceptionHandlerFeature>();
if (ex != null)
{
Type errorType = ex.Error.GetType();
if (errorType == typeof(UnauthorizedAccessException))
{
context.Response.StatusCode = StatusCodes.Status401Unauthorized;
}
else if (errorType == typeof(NotImplementedException))
{
context.Response.StatusCode = StatusCodes.Status501NotImplemented;
}
else if (errorType == typeof(ArgumentException) || errorType == typeof(ArgumentNullException))
{
context.Response.StatusCode = StatusCodes.Status400BadRequest;
}
else if (errorType == typeof(KeyNotFoundException))
{
context.Response.StatusCode = StatusCodes.Status404NotFound;
}
else if (errorType == typeof(NotImplementedException))
{
context.Response.StatusCode = StatusCodes.Status501NotImplemented;
}
await context.Response.WriteAsync(ex.Error.Message, Encoding.UTF8).ConfigureAwait(false);
}
});
}
public static void AddApplicationError(this HttpResponse response, Microsoft.AspNetCore.Diagnostics.IExceptionHandlerFeature error, string message)
{
response.Headers.Add("Error", message);
response.Headers.Add("Access-Control-Expose-Headers", "Application-Error");
response.Headers.Add("Access-Control-Allow-Origin", "*");
}
