From 9d8fd840c4f980a2b36bde402e04a52de5ec2212 Mon Sep 17 00:00:00 2001
From: Keivan Beigi <kay.one@gmail.com>
Date: Mon, 10 Jun 2013 17:17:57 -0700
Subject: [PATCH] added gzip after pipeline

---
 NzbDrone.Api/Extensions/GZipPipeline.cs | 38 +++++++++++++++++++++++++
 NzbDrone.Api/NancyBootstrapper.cs       |  1 +
 NzbDrone.Api/NzbDrone.Api.csproj        |  1 +
 3 files changed, 40 insertions(+)
 create mode 100644 NzbDrone.Api/Extensions/GZipPipeline.cs

diff --git a/NzbDrone.Api/Extensions/GZipPipeline.cs b/NzbDrone.Api/Extensions/GZipPipeline.cs
new file mode 100644
index 000000000..86767f2e4
--- /dev/null
+++ b/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();
+                    };
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/NzbDrone.Api/NancyBootstrapper.cs b/NzbDrone.Api/NancyBootstrapper.cs
index 01128eff9..400817880 100644
--- a/NzbDrone.Api/NancyBootstrapper.cs
+++ b/NzbDrone.Api/NancyBootstrapper.cs
@@ -38,6 +38,7 @@ namespace NzbDrone.Api
             container.Resolve<IEnableBasicAuthInNancy>().Register(pipelines);
             container.Resolve<IMessageAggregator>().PublishEvent(new ApplicationStartedEvent());
 
+            pipelines.AfterRequest.AddItemToStartOfPipeline(GzipCompressionPipeline.Handle);
 
             ApplicationPipelines.OnError.AddItemToEndOfPipeline(container.Resolve<NzbDroneErrorPipeline>().HandleException);
         }
diff --git a/NzbDrone.Api/NzbDrone.Api.csproj b/NzbDrone.Api/NzbDrone.Api.csproj
index 92621ce49..24ab92ec1 100644
--- a/NzbDrone.Api/NzbDrone.Api.csproj
+++ b/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" />