| public Read ( byte buffer, int offset, int count ) : int | ||
| buffer | byte | |
| offset | int | |
| count | int | |
| return | int | |
public override void Send(System.IO.Stream stream, TimeSpan timeout, Information options)
{
if (_disposed) throw new ObjectDisposedException(this.GetType().FullName);
if (!_connect) throw new ConnectionException();
if (stream == null) throw new ArgumentNullException(nameof(stream));
if (stream.Length == 0) throw new ArgumentOutOfRangeException(nameof(stream));
bool isCompress = true;
if (options != null)
{
if (options.Contains("IsCompress")) isCompress = (bool)options["IsCompress"];
}
lock (_sendLock)
{
using (RangeStream targetStream = new RangeStream(stream, stream.Position, stream.Length - stream.Position, true))
{
try
{
var list = new List<KeyValuePair<byte, Stream>>();
if (isCompress)
{
if (_otherCompressAlgorithm.HasFlag(CompressAlgorithm.Deflate))
{
BufferStream deflateBufferStream = null;
try
{
deflateBufferStream = new BufferStream(_bufferManager);
using (DeflateStream deflateStream = new DeflateStream(deflateBufferStream, CompressionMode.Compress, true))
using (var safeBuffer = _bufferManager.CreateSafeBuffer(1024 * 4))
{
int length;
while ((length = targetStream.Read(safeBuffer.Value, 0, safeBuffer.Value.Length)) > 0)
{
deflateStream.Write(safeBuffer.Value, 0, length);
}
}
deflateBufferStream.Seek(0, SeekOrigin.Begin);
list.Add(new KeyValuePair<byte, Stream>((byte)1, deflateBufferStream));
}
catch (Exception e)
{
if (deflateBufferStream != null)
{
deflateBufferStream.Dispose();
}
throw e;
}
}
}
list.Add(new KeyValuePair<byte, Stream>((byte)0, new WrapperStream(targetStream, true)));
list.Sort((x, y) =>
{
int c = x.Value.Length.CompareTo(y.Value.Length);
if (c != 0) return c;
return x.Key.CompareTo(y.Key);
});
#if DEBUG
if (list[0].Value.Length != targetStream.Length)
{
Debug.WriteLine("Send : {0}→{1} {2}",
NetworkConverter.ToSizeString(targetStream.Length),
NetworkConverter.ToSizeString(list[0].Value.Length),
NetworkConverter.ToSizeString(list[0].Value.Length - targetStream.Length));
}
#endif
for (int i = 1; i < list.Count; i++)
{
list[i].Value.Dispose();
}
var headerStream = new BufferStream(_bufferManager);
headerStream.WriteByte((byte)list[0].Key);
using (var dataStream = new UniteStream(headerStream, list[0].Value))
{
_connection.Send(dataStream, timeout, options);
}
}
catch (ConnectionException e)
{
throw e;
}
catch (Exception e)
{
throw new ConnectionException(e.Message, e);
}
}
}
}
public void Test_RangeStream()
{
using (MemoryStream memoryStream = new MemoryStream(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }))
{
byte[] mbyte = new byte[4];
memoryStream.Seek(7, SeekOrigin.Begin);
memoryStream.Read(mbyte, 0, mbyte.Length);
memoryStream.Seek(5, SeekOrigin.Begin);
using (RangeStream rangeStream = new RangeStream(memoryStream, 7, 4))
{
Assert.AreEqual(memoryStream.Position, 7, "RangeStream #1");
Assert.AreEqual(rangeStream.Position, 0, "RangeStream #2");
byte[] rbyte = new byte[4];
rangeStream.Read(rbyte, 0, rbyte.Length);
Assert.AreEqual(rangeStream.Length, 4, "RangeStream #3");
Assert.IsTrue(CollectionUtilities.Equals(mbyte, rbyte), "RangeStream #4");
}
}
}
public override void Send(Stream stream, TimeSpan timeout, Information options)
{
if (_disposed) throw new ObjectDisposedException(this.GetType().FullName);
if (stream == null) throw new ArgumentNullException("stream");
if (stream.Length == 0) throw new ArgumentOutOfRangeException("stream");
if (!_connect) throw new ConnectionException();
lock (_sendLock)
{
try
{
using (RangeStream targetStream = new RangeStream(stream, stream.Position, stream.Length - stream.Position, true))
{
if (_version.HasFlag(SecureConnectionVersion.Version3))
{
using (BufferStream bufferStream = new BufferStream(_bufferManager))
{
bufferStream.SetLength(8);
bufferStream.Seek(8, SeekOrigin.Begin);
if (_informationVersion3.CryptoAlgorithm.HasFlag(SecureVersion3.CryptoAlgorithm.Aes256))
{
byte[] iv = new byte[16];
_random.GetBytes(iv);
bufferStream.Write(iv, 0, iv.Length);
using (var aes = Aes.Create())
{
aes.KeySize = 256;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
using (CryptoStream cs = new CryptoStream(new WrapperStream(bufferStream, true), aes.CreateEncryptor(_informationVersion3.MyCryptoKey, iv), CryptoStreamMode.Write))
{
byte[] sendBuffer = null;
try
{
sendBuffer = _bufferManager.TakeBuffer(1024 * 4);
int i = -1;
while ((i = targetStream.Read(sendBuffer, 0, sendBuffer.Length)) > 0)
{
cs.Write(sendBuffer, 0, i);
}
}
finally
{
if (sendBuffer != null)
{
_bufferManager.ReturnBuffer(sendBuffer);
}
}
}
}
}
else
{
throw new ConnectionException();
}
_totalSendSize += (bufferStream.Length - 8);
bufferStream.Seek(0, SeekOrigin.Begin);
byte[] totalSendSizeBuff = NetworkConverter.GetBytes(_totalSendSize);
bufferStream.Write(totalSendSizeBuff, 0, totalSendSizeBuff.Length);
if (_informationVersion3.HashAlgorithm.HasFlag(SecureVersion3.HashAlgorithm.Sha256))
{
bufferStream.Seek(0, SeekOrigin.Begin);
byte[] hmacBuff = HmacSha256.ComputeHash(bufferStream, _informationVersion3.MyHmacKey);
bufferStream.Seek(0, SeekOrigin.End);
bufferStream.Write(hmacBuff, 0, hmacBuff.Length);
}
else
{
throw new ConnectionException();
}
bufferStream.Seek(0, SeekOrigin.Begin);
_connection.Send(bufferStream, timeout, options);
}
}
else
{
throw new ConnectionException();
}
}
}
catch (ConnectionException e)
{
throw e;
}
catch (Exception e)
{
throw new ConnectionException(e.Message, e);
}
}
}
public override System.IO.Stream Receive(TimeSpan timeout, Information options)
{
if (_disposed) throw new ObjectDisposedException(this.GetType().FullName);
if (!_connect) throw new ConnectionException();
lock (_receiveLock)
{
Stream stream = null;
RangeStream dataStream = null;
try
{
stream = _connection.Receive(timeout, options);
dataStream = new RangeStream(stream, 0, stream.Length - 4);
byte[] verifyCrc = Crc32_Castagnoli.ComputeHash(dataStream);
byte[] orignalCrc = new byte[4];
using (RangeStream crcStream = new RangeStream(stream, stream.Length - 4, 4, true))
{
crcStream.Read(orignalCrc, 0, orignalCrc.Length);
}
if (!Unsafe.Equals(verifyCrc, orignalCrc)) throw new ArgumentException("Crc Error");
dataStream.Seek(0, SeekOrigin.Begin);
return dataStream;
}
catch (ConnectionException e)
{
if (stream != null) stream.Dispose();
if (dataStream != null) dataStream.Dispose();
throw e;
}
catch (Exception e)
{
if (stream != null) stream.Dispose();
if (dataStream != null) dataStream.Dispose();
throw new ConnectionException(e.Message, e);
}
}
}
private static Stream RemoveHash(Stream stream)
{
if (stream == null) throw new ArgumentNullException("stream");
byte type = (byte)stream.ReadByte();
if (type == (byte)ConvertHashAlgorithm.Sha256)
{
Stream dataStream = null;
try
{
byte[] hash = new byte[32];
using (RangeStream hashStream = new RangeStream(stream, stream.Length - 32, 32, true))
{
hashStream.Read(hash, 0, hash.Length);
}
dataStream = new RangeStream(stream, 1, stream.Length - (1 + 32));
if (!Unsafe.Equals(hash, Sha256.ComputeHash(dataStream))) throw new FormatException();
dataStream.Seek(0, SeekOrigin.Begin);
return dataStream;
}
catch (Exception)
{
if (dataStream != null)
{
dataStream.Dispose();
}
throw;
}
}
throw new NotSupportedException();
}
private static Stream Compress(Stream stream)
{
if (stream == null) throw new ArgumentNullException("stream");
var targetStream = new RangeStream(stream, true);
List<KeyValuePair<byte, Stream>> list = new List<KeyValuePair<byte, Stream>>();
try
{
targetStream.Seek(0, SeekOrigin.Begin);
BufferStream deflateBufferStream = null;
try
{
deflateBufferStream = new BufferStream(_bufferManager);
using (DeflateStream deflateStream = new DeflateStream(deflateBufferStream, CompressionMode.Compress, true))
{
byte[] compressBuffer = null;
try
{
compressBuffer = _bufferManager.TakeBuffer(1024 * 4);
int i = -1;
while ((i = targetStream.Read(compressBuffer, 0, compressBuffer.Length)) > 0)
{
deflateStream.Write(compressBuffer, 0, i);
}
}
finally
{
if (compressBuffer != null)
{
_bufferManager.ReturnBuffer(compressBuffer);
}
}
}
deflateBufferStream.Seek(0, SeekOrigin.Begin);
list.Add(new KeyValuePair<byte, Stream>((byte)ConvertCompressionAlgorithm.Deflate, deflateBufferStream));
}
catch (Exception)
{
if (deflateBufferStream != null)
{
deflateBufferStream.Dispose();
}
}
}
catch (Exception)
{
}
list.Add(new KeyValuePair<byte, Stream>((byte)ConvertCompressionAlgorithm.None, targetStream));
list.Sort((x, y) =>
{
int c = x.Value.Length.CompareTo(y.Value.Length);
if (c != 0) return c;
return x.Key.CompareTo(y.Key);
});
#if DEBUG
if (list[0].Value.Length != targetStream.Length)
{
Debug.WriteLine("ContentConverter Compress {3} : {0}→{1} {2}",
NetworkConverter.ToSizeString(targetStream.Length),
NetworkConverter.ToSizeString(list[0].Value.Length),
NetworkConverter.ToSizeString(list[0].Value.Length - targetStream.Length),
(ConvertCompressionAlgorithm)list[0].Key);
}
#endif
for (int i = 1; i < list.Count; i++)
{
list[i].Value.Dispose();
}
BufferStream metadataStream = new BufferStream(_bufferManager);
metadataStream.WriteByte((byte)list[0].Key);
return new UniteStream(metadataStream, list[0].Value);
}
