mirror
/
Radarr
mirror of https://github.com/Radarr/Radarr
1
0
Fork 0
Code Issues Releases Wiki Activity

Fixed: Mono bug causing memory leakage when http connections use gzip compression. 

The bug is registered upstream, but this commit works around the problem by doing the gzip decompression separately from the http stack.

Ref #2296
This commit is contained in:
Leonardo Galli 2019-02-24 17:58:19 +01:00
parent bd969e0bc3
commit a26016fc08
2 changed files with 55 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
src/NzbDrone.Api/Extensions/Pipelines/GZipPipeline.cs
View File

@ -5,6 +5,7 @@ using System.Linq;
using Nancy;
using Nancy.Bootstrapper;
using NLog;
using NzbDrone.Common.EnvironmentInfo;
using NzbDrone.Common.Extensions;
namespace NzbDrone.Api.Extensions.Pipelines
@ -15,9 +16,14 @@ namespace NzbDrone.Api.Extensions.Pipelines
public int Order => 0;
private readonly Action<Action<Stream>, Stream> _writeGZipStream;
public GzipCompressionPipeline(Logger logger)
{
_logger = logger;
// On Mono GZipStream/DeflateStream leaks memory if an exception is thrown, use an intermediate buffer in that case.
_writeGZipStream = PlatformInfo.IsMono ? WriteGZipStreamMono : (Action<Action<Stream>, Stream>)WriteGZipStream;
}
public void Register(IPipelines pipelines)
@ -43,14 +49,7 @@ namespace NzbDrone.Api.Extensions.Pipelines
var contents = response.Contents;
response.Headers["Content-Encoding"] = "gzip";
response.Contents = responseStream =>
{
using (var gzip = new GZipStream(responseStream, CompressionMode.Compress, true))
using (var buffered = new BufferedStream(gzip, 8192))
{
contents.Invoke(buffered);
}
};
response.Contents = responseStream => _writeGZipStream(contents, responseStream);
}
}
@ -61,6 +60,25 @@ namespace NzbDrone.Api.Extensions.Pipelines
}
}
private static void WriteGZipStreamMono(Action<Stream> innerContent, Stream targetStream)
{
using (var membuffer = new MemoryStream())
{
WriteGZipStream(innerContent, membuffer);
membuffer.Position = 0;
membuffer.CopyTo(targetStream);
}
}
private static void WriteGZipStream(Action<Stream> innerContent, Stream targetStream)
{
using (var gzip = new GZipStream(targetStream, CompressionMode.Compress, true))
using (var buffered = new BufferedStream(gzip, 8192))
{
innerContent.Invoke(buffered);
}
}
private static bool ContentLengthIsTooSmall(Response response)
{
var contentLength = response.Headers.GetValueOrDefault("Content-Length");

32
src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs
View File

@ -1,4 +1,6 @@
using System;
using System.IO;
using System.IO.Compression;
using System.Net;
using NzbDrone.Common.EnvironmentInfo;
using NzbDrone.Common.Extensions;
@ -26,10 +28,19 @@ namespace NzbDrone.Common.Http.Dispatchers
{
webRequest = (HttpWebRequest) WebRequest.Create((Uri) request.Url);
// Deflate is not a standard and could break depending on implementation.
// we should just stick with the more compatible Gzip
//http://stackoverflow.com/questions/8490718/how-to-decompress-stream-deflated-with-java-util-zip-deflater-in-net
webRequest.AutomaticDecompression = DecompressionMethods.GZip;
if (PlatformInfo.IsMono)
{
// On Mono GZipStream/DeflateStream leaks memory if an exception is thrown, use an intermediate buffer in that case.
webRequest.AutomaticDecompression = DecompressionMethods.None;
webRequest.Headers.Add("Accept-Encoding", "gzip");
}
else
{
// Deflate is not a standard and could break depending on implementation.
// we should just stick with the more compatible Gzip
//http://stackoverflow.com/questions/8490718/how-to-decompress-stream-deflated-with-java-util-zip-deflater-in-net
webRequest.AutomaticDecompression = DecompressionMethods.GZip;
}
webRequest.Method = request.Method.ToString();
webRequest.UserAgent = request.UseSimplifiedUserAgent
@ -86,6 +97,19 @@ namespace NzbDrone.Common.Http.Dispatchers
if (responseStream != null)
{
data = responseStream.ToBytes();
if (PlatformInfo.IsMono && httpWebResponse.ContentEncoding == "gzip")
{
using (var compressedStream = new MemoryStream(data))
using (var gzip = new GZipStream(compressedStream, CompressionMode.Decompress))
using (var decompressedStream = new MemoryStream())
{
gzip.CopyTo(decompressedStream);
data = decompressedStream.ToArray();
}
httpWebResponse.Headers.Remove("Content-Encoding");
}
}
}