// TODO: Change Get and Put to byte arrays?
public void WriteContent(byte[] data)
{
if (!this.MetaWritten)
{
throw new DownloaderException("File content must be written after metadata");
}
if (data.Length > this.RemainingLength)
{
throw new DownloaderException("Tried to write more bytes than were remaining in the file.");
}
this._dataStream.Write(data, 0, data.Length);
if (this.RemainingLength == 0)
{
// Append file version if possible
if (this._cacheFileInfo?.Version != null)
{
var writer = new BinaryWriter(this._dataStream);
writer.WriteUInt16BigEndian((ushort)this._cacheFileInfo.Version);
}
this.Completed = true;
var file = new BinaryFile
{
Info = this._cacheFileInfo
};
file.Decode(this._dataStream.ToArray());
this._completionSource.SetResult(file);
}
}
protected override BinaryFile GetBinaryFile(CacheFileInfo fileInfo)
{
var file = new BinaryFile
{
Info = fileInfo
};
file.Decode(this._fileStore.ReadFileData(fileInfo.Index, fileInfo.FileId.Value));
return(file);
}
public async Task <BinaryFile> DownloadFileAsync(Index index, int fileId, CacheFileInfo fileInfo)
{
var webRequest = WebRequest.CreateHttp($"{this._baseUrl}/ms?m=0&a={(int)index}&g={fileId}&c={fileInfo.Crc}&v={fileInfo.Version}");
try
{
using (var response = (HttpWebResponse)await webRequest.GetResponseAsync())
{
if (response.StatusCode != HttpStatusCode.OK)
{
throw new DownloaderException($"HTTP interface responded with status code: {response.StatusCode}.");
}
if (response.ContentLength != fileInfo.CompressedSize)
{
throw new DownloaderException($"Downloaded file size {response.ContentLength} does not match expected {fileInfo.CompressedSize}.");
}
var dataStream = new MemoryStream();
var dataWriter = new BinaryWriter(dataStream);
var responseReader = new BinaryReader(response.GetResponseStream());
dataWriter.Write(responseReader.ReadBytes((int)response.ContentLength));
// Append version
dataWriter.WriteUInt16BigEndian((ushort)fileInfo.Version);
var file = new BinaryFile
{
Info = fileInfo
};
file.Decode(dataStream.ToArray());
return(file);
}
}
catch (WebException exception)
{
throw new DownloaderException(
$"Could not download {(int)index}/{fileId} due to a request error.",
exception
);
}
}