/// <summary>
/// Sets etag and last modified headers.
/// </summary>
/// <param name="context">The <see cref="ActionContext"/>.</param>
/// <param name="result">The <see cref="FileResult"/>.</param>
/// <param name="fileLength">The nullable file length.</param>
/// <param name="enableRangeProcessing">Whether range processing is enabled.</param>
/// <param name="lastModified">The nullable lastModified date.</param>
/// <param name="etag">The <see cref="EntityTagHeaderValue"/>.</param>
/// <returns>A tuple with the <see cref="RangeItemHeaderValue"/> range, length, and whether the body was served.</returns>
protected virtual (RangeItemHeaderValue?range, long rangeLength, bool serveBody) SetHeadersAndLog(
ActionContext context,
FileResult result,
long?fileLength,
bool enableRangeProcessing,
DateTimeOffset?lastModified = null,
EntityTagHeaderValue?etag = null)
{
var fileResultInfo = new FileResultInfo
{
ContentType = result.ContentType,
EnableRangeProcessing = result.EnableRangeProcessing,
EntityTag = result.EntityTag,
FileDownloadName = result.FileDownloadName,
LastModified = result.LastModified,
};
return(FileResultHelper.SetHeadersAndLog(context.HttpContext, fileResultInfo, fileLength, enableRangeProcessing, lastModified, etag, Logger));
}
public virtual Task ExecuteAsync(HttpContext httpContext)
{
var logger = GetLogger(httpContext);
Log.ExecutingFileResult(logger, this);
var fileResultInfo = new FileResultInfo
{
ContentType = ContentType,
EnableRangeProcessing = EnableRangeProcessing,
EntityTag = EntityTag,
FileDownloadName = FileDownloadName,
LastModified = LastModified,
};
var(range, rangeLength, serveBody) = FileResultHelper.SetHeadersAndLog(
httpContext,
fileResultInfo,
FileLength,
EnableRangeProcessing,
LastModified,
EntityTag,
logger);
if (!serveBody)
{
return(Task.CompletedTask);
}
if (range != null && rangeLength == 0)
{
return(Task.CompletedTask);
}
if (range != null)
{
FileResultHelper.Log.WritingRangeToBody(logger);
}
return(ExecuteCoreAsync(httpContext, range, rangeLength));
}
