added gzip after pipeline

NzbDrone.Api/Extensions/GZipPipeline.cs

@@ -0,0 +1,38 @@
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+using Nancy;
+
+namespace NzbDrone.Api.Extensions
+{
+    public static class GzipCompressionPipeline
+    {
+        public static void Handle(NancyContext context)
+        {
+            if (!context.Response.ContentType.Contains("image") && context.Request.Headers.AcceptEncoding.Any(x => x.Contains("gzip")))
+            {
+                var data = new MemoryStream();
+                context.Response.Contents.Invoke(data);
+                data.Position = 0;
+                if (data.Length < 1024)
+                {
+                    context.Response.Contents = stream =>
+                    {
+                        data.CopyTo(stream);
+                        stream.Flush();
+                    };
+                }
+                else
+                {
+                    context.Response.Headers["Content-Encoding"] = "gzip";
+                    context.Response.Contents = s =>
+                    {
+                        var gzip = new GZipStream(s, CompressionMode.Compress, true);
+                        data.CopyTo(gzip);
+                        gzip.Close();
+                    };
+                }
+            }
+        }
+    }
+}

NzbDrone.Api/NancyBootstrapper.cs

@@ -38,6 +38,7 @@ protected override void ApplicationStartup(TinyIoCContainer container, IPipeline
             container.Resolve<IEnableBasicAuthInNancy>().Register(pipelines);
             container.Resolve<IMessageAggregator>().PublishEvent(new ApplicationStartedEvent());
 
+            pipelines.AfterRequest.AddItemToStartOfPipeline(GzipCompressionPipeline.Handle);
 
             ApplicationPipelines.OnError.AddItemToEndOfPipeline(container.Resolve<NzbDroneErrorPipeline>().HandleException);
         }

NzbDrone.Api/NzbDrone.Api.csproj

@@ -102,6 +102,7 @@
     <Compile Include="Directories\DirectoryModule.cs" />
     <Compile Include="Episodes\EpisodeModule.cs" />
     <Compile Include="Episodes\EpisodeResource.cs" />
+    <Compile Include="Extensions\GZipPipeline.cs" />
     <Compile Include="Extensions\NancyJsonSerializer.cs" />
     <Compile Include="Frontend\MediaCoverMapper.cs" />
     <Compile Include="Frontend\IMapHttpRequestsToDisk.cs" />