private async Task LogResponse(HttpResponse resp, RequestLog log, Stopwatch timer,
DbCore dbc, string ExceptionMessage = null)
{
bool hasException = ExceptionMessage != null;
dbc.Entry(log);
log.ResponseStatus = hasException ? 500 : resp.StatusCode;
log.ResponseContentType = resp.Headers.GetValueOrDefault("Content-Type", "");
//ContentLength not always set. Fallback to buffer length if unset
log.ResponseSize = (int)(resp.ContentLength ?? resp.Body.Length);
log.Location = resp.Headers.GetValueOrDefault("Location", "");
//TODO: log.ResponseType = ???!!!
//Earlier, the response.body stream was replaced with one that allows rewinding
//so rewind to beginning, read it, and rewind it again.
resp.Body.Seek(0, SeekOrigin.Begin);
string responseAsText = await new StreamReader(resp.Body).ReadToEndAsync();
resp.Body.Seek(0, SeekOrigin.Begin);
if (!responseAsText.IsNullOrWhitespace())
{
log.ResponseText = responseAsText.Left(ResponseLogLength);
}
else if (hasException)
{
log.ResponseText = "Unhandled exception: ";
log.ResponseText += ExceptionMessage.Left(ResponseLogLength - log.ResponseText.Length);
}
//Do as much work as possible before getting the time
log.ResponseMs = (decimal)timer.Elapsed.TotalMilliseconds;
await dbc.SaveChangesAsync();
}