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Program.cs
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Program.cs
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using System.Diagnostics;
using System.Net;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Configs;
using EpicManifestParser;
using EpicManifestParser.Api;
using EpicManifestParser.UE;
using ZlibngDotNet;
//BenchmarkDotNet.Running.BenchmarkRunner.Run<Benchmarks>();
//return;
var client = new HttpClient(new HttpClientHandler
{
UseCookies = false,
UseProxy = false,
AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip,
MaxConnectionsPerServer = 256
})
{
DefaultRequestVersion = new Version(1, 1),
DefaultVersionPolicy = HttpVersionPolicy.RequestVersionExact,
Timeout = TimeSpan.FromSeconds(30)
};
var zlibng = new Zlibng(Benchmarks.ZlibngPath);
var options = new ManifestParseOptions
{
Zlibng = zlibng,
Client = client,
ChunkBaseUrl = "http://cloudflare.epicgamescdn.com/Builds/Fortnite/CloudDir/",
ChunkCacheDirectory = Directory.CreateDirectory(Path.Combine(Benchmarks.DownloadsDir, "chunks_v2")).FullName,
ManifestCacheDirectory = Directory.CreateDirectory(Path.Combine(Benchmarks.DownloadsDir, "manifests_v2")).FullName
};
using var manifestResponse = await client.GetAsync("https://media.wtf/XlQk.json");
var manifestInfo1 = await manifestResponse.Content.ReadManifestInfoAsync();
var manifestInfo2 = await ManifestInfo.DeserializeFileAsync(Benchmarks.ManifestInfoPath);
var manifestInfoTuple = await manifestInfo2!.DownloadAndParseAsync(options);
var parseResult = manifestInfoTuple.InfoElement.TryParseVersionAndCL(out var infoVersion, out var infoCl);
var randomGuid = FGuid.Random();
var chunkGuid = new FGuid("A76EAD354E9F6F06D0E75CAC2AB1B56C");
var manifestBuffer = await File.ReadAllBytesAsync(Benchmarks.ManifestPath);
var sw = Stopwatch.StartNew();
var manifest = FBuildPatchAppManifest.Deserialize(manifestBuffer, options);
sw.Stop();
Console.WriteLine(Math.Round(sw.Elapsed.TotalMilliseconds, 0));
{
var fileManifest = manifest.FileManifestList.First(x =>
x.FileName.EndsWith("/pakchunk0optional-WindowsClient.ucas", StringComparison.Ordinal));
var fileManifestFileName = Path.GetFileName(fileManifest.FileName);
var fileManifestStream = fileManifest.GetStream(false);
await fileManifestStream.SaveFileAsync(Path.Combine(Benchmarks.DownloadsDir, fileManifestFileName));
var fileBuffer = await fileManifestStream.SaveBytesAsync();
Console.WriteLine(FSHAHash.Compute(fileBuffer));
await fileManifestStream.SaveToAsync(new MemoryStream(fileBuffer, true), ProgressCallback, fileManifestFileName);
Console.WriteLine(FSHAHash.Compute(fileBuffer));
static void ProgressCallback(SaveProgressChangedEventArgs<string> eventArgs)
{
Console.WriteLine($"{eventArgs.UserState!}: {eventArgs.ProgressPercentage}% ({eventArgs.BytesSaved}/{eventArgs.TotalBytesToSave})");
}
}
Console.ReadLine();
[GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
[CategoriesColumn]
[MemoryDiagnoser(false), BaselineColumn]
public class Benchmarks
{
public static string DownloadsDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads");
public static string ManifestPath = Path.Combine(DownloadsDir, "jDihDvwDD4VfI5Ss7Uy-BNIY91lqSw.manifest");
//public static string ManifestPath = Path.Combine(DownloadsDir, "apk_manifest.json");
//public static string ManifestPath = Path.Combine(DownloadsDir, "last_pc_manifest.json");
public static string ZlibngPath = Path.Combine(DownloadsDir, "zlib-ng2.dll");
public static string ManifestInfoPath = Path.Combine(DownloadsDir, "manifestinfo.json");
private byte[] _manifestBuffer = null!;
private Zlibng _zlibng = null!;
private byte[] _manifestInfoBuffer = null!;
private FBuildPatchAppManifest _manifest = null!;
private FFileManifestStream _fileManifestStream1 = null!;
private FFileManifestStream _fileManifestStream2 = null!;
private byte[] _fileBuffer = null!;
private MemoryStream _fileMs = null!;
private string _filePath = null!;
[GlobalSetup]
public void Setup()
{
_manifestBuffer = File.ReadAllBytes(ManifestPath);
_zlibng = new Zlibng(ZlibngPath);
_manifestInfoBuffer = File.ReadAllBytes(ManifestInfoPath);
_manifest = FBuildPatchAppManifest.Deserialize(_manifestBuffer, options =>
{
options.Zlibng = _zlibng;
//options.ChunkBaseUrl = "http://download.epicgames.com/Builds/Fortnite/CloudDir/"; // 20-21 ms
//options.ChunkBaseUrl = "http://cloudflare.epicgamescdn.com/Builds/Fortnite/CloudDir/"; // 34-36 ms
options.ChunkBaseUrl = "http://fastly-download.epicgames.com/Builds/Fortnite/CloudDir/"; // 19-20 ms
//options.ChunkBaseUrl = "http://epicgames-download1.akamaized.net/Builds/Fortnite/CloudDir/"; // 27-28 ms
options.ChunkCacheDirectory = Directory.CreateDirectory(Path.Combine(DownloadsDir, "chunks_v2")).FullName;
});
var fileManifest = _manifest.FileManifestList.First(x =>
x.FileName.EndsWith("/pakchunk0optional-WindowsClient.ucas", StringComparison.Ordinal));
_filePath = Path.Combine(DownloadsDir, Path.GetFileName(fileManifest.FileName));
_fileBuffer = new byte[fileManifest.FileSize];
_fileMs = new MemoryStream(_fileBuffer, true);
_fileManifestStream1 = fileManifest.GetStream();
_fileManifestStream2 = fileManifest.GetStream(false);
}
//[Benchmark]
//public FBuildPatchAppManifest FBuildPatchAppManifest_Deserialize()
//{
// return FBuildPatchAppManifest.Deserialize(_manifestBuffer, options =>
// {
// options.Zlibng = _zlibng;
// });
//}
//[Benchmark]
//public ManifestInfo? ManifestInfo_Deserialize()
//{
// return ManifestInfo.Deserialize(_manifestInfoBuffer);
//}
[BenchmarkCategory("Buffer"), Benchmark(Baseline = true)]
public async Task FFileManifestStream_SaveBuffer()
{
await _fileManifestStream2.SaveBytesAsync(_fileBuffer);
}
[BenchmarkCategory("Buffer"), Benchmark]
public async Task FFileManifestStream_SaveBuffer_AsIs()
{
await _fileManifestStream1.SaveBytesAsync(_fileBuffer);
}
[BenchmarkCategory("File"), Benchmark(Baseline = true)]
public async Task FFileManifestStream_SaveFile()
{
await _fileManifestStream2.SaveFileAsync(_filePath);
}
[BenchmarkCategory("File"), Benchmark]
public async Task FFileManifestStream_SaveFile_AsIs()
{
await _fileManifestStream1.SaveFileAsync(_filePath);
}
[BenchmarkCategory("Stream"), Benchmark(Baseline = true)]
public async Task FFileManifestStream_SaveStream()
{
_fileMs.Position = 0;
await _fileManifestStream2.SaveToAsync(_fileMs);
}
[BenchmarkCategory("Stream"), Benchmark]
public async Task FFileManifestStream_SaveStream_AsIs()
{
_fileMs.Position = 0;
await _fileManifestStream1.SaveToAsync(_fileMs);
}
}