public static async Task <byte[]> ReadToFileAndHashAsync(Stream networkStream, string filePath, long fileLength)
{
var folder = Path.GetDirectoryName(filePath);
if (folder == null)
{
throw new InvalidOperationException($"Failed to get file '{filePath}' folder");
}
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
if (fileLength == 0)
{
return(XxHash64Callback.EmptyHash);
}
using (var fileStream = new FileStream(filePath, FileMode.CreateNew, FileAccess.Write, FileShare.None, ReadBufferSize, FileOptions.WriteThrough | FileOptions.Asynchronous))
{
async Task WriteToFile(byte[] bytes, int length)
{
await fileStream.WriteAsync(bytes, 0, length);
}
return(await XxHash64Callback.ComputeHash(networkStream, ChunkSize, fileLength, WriteToFile));
}
}
private static async Task <byte[]> HashFileAsync(string filePath, long fileLength)
{
using (var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read, ReadBufferSize, FileOptions))
using (var bufferedStream = new BufferedStream(fileStream, ReadBufferSize))
{
return(await XxHash64Callback.ComputeHash(bufferedStream, ChunkSize, fileLength, (bytes, i) => Task.CompletedTask));
}
}
public static async Task <byte[]> WriteFromFileAndHashAsync(NetworkStream networkStream, string filePath, int fileLength)
{
async Task WriteToNetwork(byte[] bytes, int length)
{
await networkStream.WriteAsync(bytes, 0, length);
}
using (var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read, ReadBufferSize, FileOptions))
using (var bufferedStream = new BufferedStream(fileStream, ReadBufferSize))
{
return(await XxHash64Callback.ComputeHash(bufferedStream, ChunkSize, fileLength, WriteToNetwork));
}
}
public static async Task <byte[]> HashFileAsync(FileInfo inf)
{
if (inf.Length == 0)
{
return(XxHash64Callback.EmptyHash);
}
using (var fileStream = new FileStream(inf.FullName, FileMode.Open, FileAccess.Read, FileShare.Read, ReadBufferSize, FileOptions))
using (var bufferedStream = new BufferedStream(fileStream, ReadBufferSize))
{
return(await XxHash64Callback.ComputeHash(bufferedStream, ChunkSize, inf.Length, (bytes, i) => Task.CompletedTask));
}
}
