| public Write ( byte buffer, int offset, int count ) : void | ||
| buffer | byte | |
| offset | int | |
| count | int | |
| return | void | |
public void Test_BufferStream()
{
//for (int i = 0; i < 10; i++)
Parallel.For(0, 32, new ParallelOptions() { MaxDegreeOfParallelism = 64 }, i =>
{
//using (MemoryStream stream = new MemoryStream())
using (BufferStream stream = new BufferStream(_bufferManager))
{
byte[] buffer = _bufferManager.TakeBuffer(1024 * 1024); //new byte[_random.Next(128, 1024 * 1024 * 10)];
long seek = _random.Next(64, buffer.Length);
//long seek = 0;
_random.NextBytes(buffer);
stream.Write(buffer, 0, buffer.Length);
stream.Position = seek;
byte[] buff2 = _bufferManager.TakeBuffer(buffer.Length); //new byte[buffer.Length];
stream.Read(buff2, (int)seek, buff2.Length - (int)seek);
if (!CollectionUtilities.Equals(buffer, (int)seek, buff2, (int)seek, buffer.Length - (int)seek))
{
Assert.IsTrue(CollectionUtilities.Equals(buffer, (int)seek, buff2, (int)seek, buffer.Length - (int)seek));
}
_bufferManager.ReturnBuffer(buffer);
_bufferManager.ReturnBuffer(buff2);
}
});
using (MemoryStream mstream = new MemoryStream())
using (BufferStream stream = new BufferStream(_bufferManager))
{
for (int i = 0; i < 1024 * 1024; i++)
{
var v = (byte)_random.Next(0, 255);
mstream.WriteByte(v);
stream.WriteByte(v);
}
mstream.Seek(0, SeekOrigin.Begin);
stream.Seek(0, SeekOrigin.Begin);
Assert.IsTrue(mstream.Length == stream.Length);
for (int i = 0; i < 1024 * 1024; i++)
{
Assert.IsTrue(mstream.ReadByte() == stream.ReadByte());
}
}
}
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;
try
{
stream = _connection.Receive(timeout, options);
var version = (byte)stream.ReadByte();
Stream dataStream = null;
try
{
dataStream = new RangeStream(stream, stream.Position, stream.Length - stream.Position);
if (version == (byte)0)
{
return dataStream;
}
else if (version == (byte)1)
{
BufferStream deflateBufferStream = null;
try
{
deflateBufferStream = new BufferStream(_bufferManager);
using (DeflateStream deflateStream = new DeflateStream(dataStream, CompressionMode.Decompress, true))
using (var safeBuffer = _bufferManager.CreateSafeBuffer(1024 * 4))
{
int length;
while ((length = deflateStream.Read(safeBuffer.Value, 0, safeBuffer.Value.Length)) > 0)
{
deflateBufferStream.Write(safeBuffer.Value, 0, length);
if (deflateBufferStream.Length > _maxReceiveCount) throw new ConnectionException();
}
}
}
catch (Exception e)
{
if (deflateBufferStream != null)
{
deflateBufferStream.Dispose();
}
throw e;
}
#if DEBUG
Debug.WriteLine("Receive : {0}→{1} {2}",
NetworkConverter.ToSizeString(stream.Length),
NetworkConverter.ToSizeString(deflateBufferStream.Length),
NetworkConverter.ToSizeString(stream.Length - deflateBufferStream.Length));
#endif
deflateBufferStream.Seek(0, SeekOrigin.Begin);
dataStream.Dispose();
return deflateBufferStream;
}
else
{
throw new ArgumentException("ArgumentException");
}
}
catch (ConnectionException e)
{
if (dataStream != null) dataStream.Dispose();
throw e;
}
catch (Exception e)
{
if (dataStream != null) dataStream.Dispose();
throw new ConnectionException(e.Message, e);
}
}
catch (ConnectionException e)
{
if (stream != null) stream.Dispose();
throw e;
}
catch (Exception e)
{
if (stream != null) stream.Dispose();
throw new ConnectionException(e.Message, e);
}
}
}
public override void Connect(TimeSpan timeout, Information options)
{
if (_disposed) throw new ObjectDisposedException(this.GetType().FullName);
lock (this.ThisLock)
{
try
{
var stopwatch = new Stopwatch();
stopwatch.Start();
using (BufferStream stream = new BufferStream(_bufferManager))
{
byte[] buffer = NetworkConverter.GetBytes((uint)_myCompressAlgorithm);
stream.Write(buffer, 0, buffer.Length);
stream.Flush();
stream.Seek(0, SeekOrigin.Begin);
_connection.Send(stream, CheckTimeout(stopwatch.Elapsed, timeout));
}
using (Stream stream = _connection.Receive(CheckTimeout(stopwatch.Elapsed, timeout)))
{
byte[] buffer = new byte[4];
stream.Read(buffer, 0, buffer.Length);
_otherCompressAlgorithm = (CompressAlgorithm)NetworkConverter.ToUInt32(buffer);
}
}
catch (ConnectionException ex)
{
throw ex;
}
catch (Exception ex)
{
throw new ConnectionException(ex.Message, ex);
}
_connect = true;
}
}
public override void Send(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));
lock (_sendLock)
{
using (RangeStream targetStream = new RangeStream(stream, stream.Position, stream.Length - stream.Position, true))
{
try
{
_sendStopwatch.Restart();
Stream headerStream = new BufferStream(_bufferManager);
headerStream.Write(NetworkConverter.GetBytes((int)targetStream.Length), 0, 4);
using (Stream dataStream = new UniteStream(headerStream, new WrapperStream(targetStream, true)))
using (var safeBuffer = _bufferManager.CreateSafeBuffer(1024 * 32))
{
for (;;)
{
var sendLength = (int)Math.Min(dataStream.Length - dataStream.Position, safeBuffer.Value.Length);
if (sendLength == 0) break;
if (_bandwidthLimit != null && _bandwidthLimit.Out != 0)
{
sendLength = _bandwidthLimit.GetOutBandwidth(this, sendLength);
if (sendLength < 0) throw new ConnectionException();
}
dataStream.Read(safeBuffer.Value, 0, sendLength);
var time = Connection.CheckTimeout(_sendStopwatch.Elapsed, timeout);
time = (time < _sendTimeSpan) ? time : _sendTimeSpan;
_cap.Send(safeBuffer.Value, 0, sendLength, time);
_aliveStopwatch.Restart();
_sentByteCount.Add(sendLength);
}
}
_aliveTimer.Change(1000 * 30);
}
catch (ConnectionException e)
{
throw e;
}
catch (Exception e)
{
throw new ConnectionException(e.Message, e);
}
}
}
}
public static string GetSignature(Certificate certificate)
{
if (certificate == null || certificate.Nickname == null || certificate.PublicKey == null) return null;
try
{
if (certificate.DigitalSignatureAlgorithm == DigitalSignatureAlgorithm.EcDsaP521_Sha256
|| certificate.DigitalSignatureAlgorithm == DigitalSignatureAlgorithm.Rsa2048_Sha256)
{
using (BufferStream bufferStream = new BufferStream(_bufferManager))
{
Signature.WriteString(bufferStream, certificate.Nickname);
bufferStream.Write(certificate.PublicKey, 0, certificate.PublicKey.Length);
bufferStream.Seek(0, SeekOrigin.Begin);
var signature = certificate.Nickname + "@" + NetworkConverter.ToBase64UrlString(Sha256.ComputeHash(bufferStream));
return _signatureCache.GetValue(signature, certificate);
}
}
return null;
}
catch (Exception)
{
return null;
}
}
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 Stream Receive(TimeSpan timeout, Information options)
{
if (_disposed) throw new ObjectDisposedException(this.GetType().FullName);
if (!_connect) throw new ConnectionException();
lock (_receiveLock)
{
try
{
_receiveStopwatch.Restart();
Restart:;
int length = 0;
{
byte[] lengthBuffer = new byte[4];
var time = Connection.CheckTimeout(_receiveStopwatch.Elapsed, timeout);
time = (time < _receiveTimeSpan) ? time : _receiveTimeSpan;
_cap.Receive(lengthBuffer, time);
_receivedByteCount.Add(4);
length = NetworkConverter.ToInt32(lengthBuffer);
}
if (length == 0)
{
Thread.Sleep(300);
goto Restart;
}
else if (length > _maxReceiveCount)
{
throw new ConnectionException();
}
BufferStream bufferStream = null;
try
{
bufferStream = new BufferStream(_bufferManager);
using (var safeBuffer = _bufferManager.CreateSafeBuffer(1024 * 32))
{
do
{
int receiveLength = Math.Min(safeBuffer.Value.Length, length);
var time = Connection.CheckTimeout(_receiveStopwatch.Elapsed, timeout);
time = (time < _receiveTimeSpan) ? time : _receiveTimeSpan;
if (_bandwidthLimit != null && _bandwidthLimit.In != 0)
{
if (_cap.Available == 0)
{
Thread.Sleep(300);
continue;
}
receiveLength = _bandwidthLimit.GetInBandwidth(this, Math.Min(_cap.Available, receiveLength));
if (receiveLength < 0) throw new ConnectionException();
}
_cap.Receive(safeBuffer.Value, 0, receiveLength, time);
_receivedByteCount.Add(receiveLength);
bufferStream.Write(safeBuffer.Value, 0, receiveLength);
length -= receiveLength;
} while (length > 0);
}
}
catch (Exception e)
{
if (bufferStream != null)
{
bufferStream.Dispose();
}
throw e;
}
bufferStream.Seek(0, SeekOrigin.Begin);
return bufferStream;
}
catch (ConnectionException e)
{
throw e;
}
catch (Exception e)
{
throw new ConnectionException(e.Message, e);
}
}
}
private static Stream Encrypt(Stream stream, IExchangeEncrypt publicKey)
{
if (stream == null) throw new ArgumentNullException("stream");
if (publicKey == null) throw new ArgumentNullException("publicKey");
try
{
BufferStream outStream = null;
try
{
outStream = new BufferStream(_bufferManager);
outStream.WriteByte((byte)ConvertCryptoAlgorithm.Aes256);
byte[] cryptoKey = new byte[32];
_random.GetBytes(cryptoKey);
{
var encryptedBuffer = Exchange.Encrypt(publicKey, cryptoKey);
outStream.Write(NetworkConverter.GetBytes((int)encryptedBuffer.Length), 0, 4);
outStream.Write(encryptedBuffer, 0, encryptedBuffer.Length);
}
byte[] iv = new byte[32];
_random.GetBytes(iv);
outStream.Write(iv, 0, iv.Length);
using (Stream inStream = new WrapperStream(stream, true))
{
using (var rijndael = new RijndaelManaged() { KeySize = 256, BlockSize = 256, Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7 })
using (CryptoStream cs = new CryptoStream(inStream, rijndael.CreateEncryptor(cryptoKey, iv), CryptoStreamMode.Read))
{
byte[] buffer = null;
try
{
buffer = _bufferManager.TakeBuffer(1024 * 4);
int i = -1;
while ((i = cs.Read(buffer, 0, buffer.Length)) > 0)
{
outStream.Write(buffer, 0, i);
}
}
finally
{
if (buffer != null)
{
_bufferManager.ReturnBuffer(buffer);
}
}
}
}
outStream.Seek(0, SeekOrigin.Begin);
}
catch (Exception)
{
if (outStream != null)
{
outStream.Dispose();
}
throw;
}
return outStream;
}
catch (Exception e)
{
throw new ArgumentException(e.Message, e);
}
}
public static string GetSignature(DigitalSignature digitalSignature)
{
if (digitalSignature == null || digitalSignature.Nickname == null || digitalSignature.PublicKey == null) return null;
try
{
if (digitalSignature.DigitalSignatureAlgorithm == DigitalSignatureAlgorithm.EcDsaP521_Sha256
|| digitalSignature.DigitalSignatureAlgorithm == DigitalSignatureAlgorithm.Rsa2048_Sha256)
{
using (BufferStream bufferStream = new BufferStream(_bufferManager))
{
Signature.WriteString(bufferStream, digitalSignature.Nickname);
bufferStream.Write(digitalSignature.PublicKey, 0, digitalSignature.PublicKey.Length);
bufferStream.Seek(0, SeekOrigin.Begin);
return string.Concat(digitalSignature.Nickname, "@", NetworkConverter.ToBase64UrlString(Sha256.ComputeHash(bufferStream)));
}
}
return null;
}
catch (Exception)
{
return null;
}
}
private static Stream Decrypt(Stream stream, IExchangeDecrypt privateKey)
{
if (stream == null) throw new ArgumentNullException("stream");
if (privateKey == null) throw new ArgumentNullException("privateKey");
try
{
byte type = (byte)stream.ReadByte();
if (type == (byte)ConvertCryptoAlgorithm.Aes256)
{
byte[] cryptoKey;
{
byte[] lengthBuffer = new byte[4];
if (stream.Read(lengthBuffer, 0, lengthBuffer.Length) != lengthBuffer.Length) throw new ArgumentException();
int length = NetworkConverter.ToInt32(lengthBuffer);
byte[] encryptedBuffer = new byte[length];
if (stream.Read(encryptedBuffer, 0, encryptedBuffer.Length) != encryptedBuffer.Length) throw new ArgumentException();
cryptoKey = Exchange.Decrypt(privateKey, encryptedBuffer);
}
BufferStream outStream = null;
try
{
outStream = new BufferStream(_bufferManager);
using (Stream dataStream = new WrapperStream(stream, true))
{
var iv = new byte[32];
dataStream.Read(iv, 0, iv.Length);
using (var rijndael = new RijndaelManaged() { KeySize = 256, BlockSize = 256, Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7 })
using (var inStream = new RangeStream(dataStream, dataStream.Position, dataStream.Length - dataStream.Position))
using (CryptoStream cs = new CryptoStream(inStream, rijndael.CreateDecryptor(cryptoKey, iv), CryptoStreamMode.Read))
{
byte[] buffer = null;
try
{
buffer = _bufferManager.TakeBuffer(1024 * 4);
int i = -1;
while ((i = cs.Read(buffer, 0, buffer.Length)) > 0)
{
outStream.Write(buffer, 0, i);
}
}
finally
{
_bufferManager.ReturnBuffer(buffer);
}
}
}
outStream.Seek(0, SeekOrigin.Begin);
}
catch (Exception)
{
if (outStream != null)
{
outStream.Dispose();
}
throw;
}
return outStream;
}
throw new NotSupportedException();
}
catch (Exception e)
{
throw new ArgumentException(e.Message, e);
}
}
private static Stream Decompress(Stream stream)
{
if (stream == null) throw new ArgumentNullException("stream");
try
{
var targetStream = new RangeStream(stream, true);
byte type = (byte)targetStream.ReadByte();
if (type == (byte)ConvertCompressionAlgorithm.None)
{
return new RangeStream(targetStream);
}
else if (type == (byte)ConvertCompressionAlgorithm.Deflate)
{
using (Stream dataStream = new WrapperStream(targetStream, true))
{
BufferStream deflateBufferStream = null;
try
{
deflateBufferStream = new BufferStream(_bufferManager);
using (DeflateStream deflateStream = new DeflateStream(dataStream, CompressionMode.Decompress, true))
{
byte[] decompressBuffer = null;
try
{
decompressBuffer = _bufferManager.TakeBuffer(1024 * 4);
int i = -1;
while ((i = deflateStream.Read(decompressBuffer, 0, decompressBuffer.Length)) > 0)
{
deflateBufferStream.Write(decompressBuffer, 0, i);
}
}
finally
{
if (decompressBuffer != null)
{
_bufferManager.ReturnBuffer(decompressBuffer);
}
}
}
deflateBufferStream.Seek(0, SeekOrigin.Begin);
#if DEBUG
Debug.WriteLine("ContentConverter Decompress {3} : {0}→{1} {2}",
NetworkConverter.ToSizeString(dataStream.Length),
NetworkConverter.ToSizeString(deflateBufferStream.Length),
NetworkConverter.ToSizeString(dataStream.Length - deflateBufferStream.Length),
ConvertCompressionAlgorithm.Deflate);
#endif
return deflateBufferStream;
}
catch (Exception)
{
if (deflateBufferStream != null)
{
deflateBufferStream.Dispose();
}
}
}
}
throw new ArgumentException("ArgumentException");
}
catch (Exception e)
{
throw new ArgumentException(e.Message, e);
}
}
private static Stream AddType(Stream stream, string type)
{
if (stream == null) throw new ArgumentNullException("stream");
List<Stream> streams = new List<Stream>();
Encoding encoding = new UTF8Encoding(false);
// Type
if (type != null)
{
BufferStream bufferStream = new BufferStream(_bufferManager);
bufferStream.SetLength(4);
bufferStream.Seek(4, SeekOrigin.Begin);
using (WrapperStream wrapperStream = new WrapperStream(bufferStream, true))
using (StreamWriter writer = new StreamWriter(wrapperStream, encoding))
{
writer.Write(type);
}
bufferStream.Seek(0, SeekOrigin.Begin);
bufferStream.Write(NetworkConverter.GetBytes((int)bufferStream.Length - 4), 0, 4);
streams.Add(bufferStream);
}
streams.Add(new WrapperStream(stream, true));
return new UniteStream(streams);
}
private static Stream AddPadding(Stream stream, int size)
{
if (stream == null) throw new ArgumentNullException("stream");
try
{
byte[] seedBuffer = new byte[4];
_random.GetBytes(seedBuffer);
Random random = new Random(NetworkConverter.ToInt32(seedBuffer));
BufferStream metadataStream = new BufferStream(_bufferManager);
byte[] lengthBuffer = NetworkConverter.GetBytes((int)stream.Length);
metadataStream.Write(lengthBuffer, 0, lengthBuffer.Length);
int paddingLength = size - ((int)stream.Length + 4);
BufferStream paddingStream = new BufferStream(_bufferManager);
{
byte[] buffer = null;
try
{
buffer = _bufferManager.TakeBuffer(1024);
while (paddingLength > 0)
{
int writeSize = Math.Min(paddingLength, buffer.Length);
random.NextBytes(buffer);
paddingStream.Write(buffer, 0, writeSize);
paddingLength -= writeSize;
}
}
finally
{
_bufferManager.ReturnBuffer(buffer);
}
}
return new UniteStream(metadataStream, new WrapperStream(stream, true), paddingStream);
}
catch (Exception e)
{
throw new ArgumentException(e.Message, e);
}
}
private static Stream AddHash(Stream stream)
{
if (stream == null) throw new ArgumentNullException("stream");
try
{
var targetStream = new RangeStream(stream, true);
BufferStream metadataStream = new BufferStream(_bufferManager);
metadataStream.WriteByte((byte)ConvertHashAlgorithm.Sha256);
targetStream.Seek(0, SeekOrigin.Begin);
var hash = Sha256.ComputeHash(targetStream);
BufferStream hashStream = new BufferStream(_bufferManager);
hashStream.Write(hash, 0, hash.Length);
return new UniteStream(metadataStream, targetStream, hashStream);
}
catch (Exception e)
{
throw new ArgumentException(e.Message, e);
}
}
