public async Task PrefetchChunk(ValorantChunkV2 chunk, CancellationToken cancellationToken)
{
var chunkPath = Path.Combine(_chunkDirectory.FullName, $"{chunk.Id}.valchunk");
if (File.Exists(chunkPath))
{
return;
}
using var request = new HttpRequestMessage(HttpMethod.Get, chunk.Url);
using var response = await _client.SendAsync(request, cancellationToken).ConfigureAwait(false);
if (response.StatusCode == HttpStatusCode.OK)
{
var chunkBytes = await response.Content.ReadAsByteArrayAsync().ConfigureAwait(false);
await using var fs = new FileStream(chunkPath, FileMode.Create, FileAccess.Write, FileShare.Read);
await fs.WriteAsync(chunkBytes, 0, chunkBytes.Length, cancellationToken).ConfigureAwait(false);
}
#if DEBUG
else
{
var content = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
Debugger.Break();
}
#endif
}
public ValorantAPIManifestV2(BinaryReader reader, DirectoryInfo directoryInfo)
{
using (reader)
{
Header = new ValorantAPIManifestHeaderV2(reader);
var compressedBuffer = reader.ReadBytes((int)Header.CompressedSize);
var uncompressedBuffer = ZlibStream.UncompressBuffer(compressedBuffer);
if (uncompressedBuffer.Length != Header.UncompressedSize)
{
throw new FileLoadException("invalid decompressed manifest body");
}
using var bodyMs = new MemoryStream(uncompressedBuffer, false);
using var bodyReader = new BinaryReader(bodyMs);
Chunks = new ValorantChunkV2[Header.ChunkCount];
for (var i = 0u; i < Header.ChunkCount; i++)
{
Chunks[i] = new ValorantChunkV2(bodyReader);
}
Paks = new ValorantPakV2[Header.PakCount];
for (var i = 0u; i < Header.PakCount; i++)
{
Paks[i] = new ValorantPakV2(bodyReader);
}
}
_client = new HttpClient(new HttpClientHandler
{
UseProxy = false,
UseCookies = false,
AutomaticDecompression = DecompressionMethods.All,
CheckCertificateRevocationList = false,
PreAuthenticate = false,
MaxConnectionsPerServer = 1337,
UseDefaultCredentials = false,
AllowAutoRedirect = false
});
_chunkDirectory = directoryInfo;
}