public bool TryGetFileInfo(HttpContext context, out string contentType,
out IFileInfo fileInfo, out DateTimeOffset?lastModified, out EntityTagHeaderValue etag)
{
contentType = null;
fileInfo = null;
if (context.UseMethods("GET", "HEAD") && context.TryGetSubPath(_options.RequestPath, out var subPath) &&
_options.TryGetContentType(subPath, out contentType) &&
_options.TryGetFileInfo(subPath, out fileInfo))
{
var last = fileInfo.LastModified;
long eTagHash = last.ToFileTime() ^ fileInfo.Length;
etag = new EntityTagHeaderValue('\"' + Convert.ToString(eTagHash, 16) + '\"');
lastModified = new DateTimeOffset(last.Year, last.Month, last.Day,
last.Hour, last.Minute, last.Second, last.Offset).ToUniversalTime();
return(true);
}
etag = null;
lastModified = null;
return(false);
}
