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Lidarr/NzbDrone.Api/Extensions/Pipelines/IfModifiedPipeline.cs

33 lines
1.0 KiB

using Nancy;
using Nancy.Bootstrapper;
using NzbDrone.Api.Frontend;
namespace NzbDrone.Api.Extensions.Pipelines
{
public class IfModifiedPipeline : IRegisterNancyPipeline
{
private readonly ICacheableSpecification _cacheableSpecification;
public IfModifiedPipeline(ICacheableSpecification cacheableSpecification)
{
_cacheableSpecification = cacheableSpecification;
}
public void Register(IPipelines pipelines)
{
pipelines.BeforeRequest.AddItemToStartOfPipeline(Handle);
}
private Response Handle(NancyContext context)
{
if (_cacheableSpecification.IsCacheable(context) && context.Request.Headers.IfModifiedSince.HasValue)
{
var response = new Response { ContentType = MimeTypes.GetMimeType(context.Request.Path), StatusCode = HttpStatusCode.NotModified };
response.Headers.EnableCache();
return response;
}
return null;
}
}
}