private void ExchangeKeys(Stream baseStream, ISymmetricAlgorithmDescriptor transportAlgorithmDescriptor, IKeyExchangeAlgorithm keyExchangeAlgorithm, out ICryptoTransform decryptor, out ICryptoTransform encryptor)
{
var encryptionAlgorithm = transportAlgorithmDescriptor.Build();
var key = new byte[encryptionAlgorithm.KeySize / 8];
var iv = new byte[encryptionAlgorithm.BlockSize / 8];
prng.GetBytes(key);
prng.GetBytes(iv);
encryptionAlgorithm.Key = key;
encryptionAlgorithm.IV = iv;
var keyPackage = new KeyPackage
{
Key = encryptionAlgorithm.Key,
InitializationVector = encryptionAlgorithm.IV,
};
byte[] keyBuffer;
using (var memoryStream = new MemoryStream())
{
Serializer.Serialize(memoryStream, keyPackage);
keyBuffer = keyExchangeAlgorithm.Encrypt(memoryStream.ToArray());
}
var buffer = bitConverter.GetBytes(keyBuffer.Length);
baseStream.Write(buffer, 0, buffer.Length);
baseStream.Write(keyBuffer, 0, keyBuffer.Length);
buffer = new byte[sizeof(int)];
baseStream.Read(buffer, 0, buffer.Length);
var length = bitConverter.ToInt32(buffer);
if (0 > length)
{
throw new InvalidDataException();
}
buffer = new byte[length];
baseStream.Read(buffer, 0, buffer.Length);
buffer = keyExchangeAlgorithm.Decrypt(buffer);
var decryptionAlgorithm = transportAlgorithmDescriptor.Build();
KeyPackage remoteKeyPackage;
using (var memoryStream = new MemoryStream(buffer))
remoteKeyPackage = Serializer.Deserialize <KeyPackage>(memoryStream);
decryptionAlgorithm.Key = remoteKeyPackage.Key;
decryptionAlgorithm.IV = remoteKeyPackage.InitializationVector;
encryptor = encryptionAlgorithm.CreateEncryptor();
decryptor = decryptionAlgorithm.CreateDecryptor();
}
public T ReadNext(out int size)
{
var buffer = new byte[4];
EndPoint remoteEndpoint = null;
socket.FillReceiveFrom(buffer, ref remoteEndpoint);
var messageLength = bitConverter.ToInt32(buffer);
if (0 > messageLength)
{
size = -1;
return(default(T));
}
buffer = new byte[messageLength];
socket.FillReceive(buffer);
size = 4 + messageLength;
using (var stream = new MemoryStream(buffer))
return(serializer.Deserialize(stream));
}
static Reader()
{
//positive fixint 0xxxxxxx 0x00 - 0x7f
_lookup.AddRange(0, 0x7F,
(b, s) => new MPack(b, MPackType.SInt),
(b, s, c) => Task.FromResult(new MPack(b, MPackType.SInt)));
//positive fixint 0xxxxxxx 0x00 - 0x7f
_lookup.AddRange(0x80, 0x8F, (b, s) =>
{
MPackMap map = new MPackMap();
int len = b - 0x80;
for (int i = 0; i < len; i++)
{
map.Add(ParseFromStream(s), ParseFromStream(s));
}
return(map);
}, async(b, s, c) =>
{
MPackMap map = new MPackMap();
int len = b - 0x80;
for (int i = 0; i < len; i++)
{
map.Add(await ParseFromStreamAsync(s, c), await ParseFromStreamAsync(s, c));
}
return(map);
});
//fixarray 1001xxxx 0x90 - 0x9f
_lookup.AddRange(0x90, 0x9f, (b, s) =>
{
MPackArray array = new MPackArray();
int len = b - 0x90;
for (int i = 0; i < len; i++)
{
array.Add(ParseFromStream(s));
}
return(array);
}, async(b, s, c) =>
{
MPackArray array = new MPackArray();
int len = b - 0x90;
for (int i = 0; i < len; i++)
{
array.Add(await ParseFromStreamAsync(s, c));
}
return(array);
});
// fixstr 101xxxxx 0xa0 - 0xbf
_lookup.AddRange(0xA0, 0xBF, (b, s) =>
{
int len = b - 0xA0;
return(new MPack(_encoding.GetString(s.Read(len)), MPackType.String));
}, async(b, s, c) =>
{
int len = b - 0xA0;
return(new MPack(_encoding.GetString(await s.ReadAsync(len, c)), MPackType.String));
});
// negative fixnum stores 5-bit negative integer 111xxxxx
_lookup.AddRange(0xE0, 0xFF,
(b, s) => new MPack((sbyte)b, MPackType.SInt),
(b, s, c) => Task.FromResult(new MPack((sbyte)b, MPackType.SInt)));
// null
_lookup.Add(0xC0,
(b, s) => MPack.Null(),
(b, s, c) => Task.FromResult(MPack.Null()));
// note, no 0xC1, it's not used.
// bool: false
_lookup.Add(0xC2,
(b, s) => new MPack(false, MPackType.Bool),
(b, s, c) => Task.FromResult(new MPack(false, MPackType.Bool)));
// bool: true
_lookup.Add(0xC3,
(b, s) => new MPack(true, MPackType.Bool),
(b, s, c) => Task.FromResult(new MPack(true, MPackType.Bool)));
// binary array, max 255
_lookup.Add(0xC4, (b, s) =>
{
byte len = (byte)s.ReadByte();
return(new MPack(s.Read(len), MPackType.Binary));
}, async(b, s, c) =>
{
byte len = await s.ReadByteAsync(c);
return(new MPack(await s.ReadAsync(len, c), MPackType.Binary));
});
// binary array, max 65535
_lookup.Add(0xC5, (b, s) =>
{
int len = _convert.ToUInt16(s.Read(2), 0);
return(new MPack(s.Read(len), MPackType.Binary));
}, async(b, s, c) =>
{
int len = _convert.ToUInt16((await s.ReadAsync(2, c)), 0);
return(new MPack(await s.ReadAsync(len, c), MPackType.Binary));
});
// binary max: 2^32-1
_lookup.Add(0xC6, (b, s) =>
{
uint len = _convert.ToUInt32(s.Read(4), 0);
return(new MPack(s.Read(len), MPackType.Binary));
}, async(b, s, c) =>
{
uint len = _convert.ToUInt32((await s.ReadAsync(4, c)), 0);
return(new MPack(await s.ReadAsync(len, c), MPackType.Binary));
});
// note 0xC7, 0xC8, 0xC9, not used.
// float 32 stores a floating point number in IEEE 754 single precision floating point number
_lookup.Add(0xCA, (b, s) =>
{
var raw = s.Read(4);
return(new MPack(_convert.ToSingle(raw, 0), MPackType.Single));
}, async(b, s, c) =>
{
var raw = (await s.ReadAsync(4, c));
return(new MPack(_convert.ToSingle(raw, 0), MPackType.Single));
});
// float 64 stores a floating point number in IEEE 754 double precision floating point number
_lookup.Add(0xCB, (b, s) =>
{
var raw = s.Read(8);
return(new MPack(_convert.ToDouble(raw, 0), MPackType.Double));
}, async(b, s, c) =>
{
var raw = (await s.ReadAsync(8, c));
return(new MPack(_convert.ToDouble(raw, 0), MPackType.Double));
});
// uint8 0xcc xxxxxxxx
_lookup.Add(0xCC,
(b, s) => new MPack((byte)s.ReadByte(), MPackType.UInt),
async(b, s, c) => new MPack((byte)await s.ReadByteAsync(c), MPackType.UInt));
// uint16 0xcd xxxxxxxx xxxxxxxx
_lookup.Add(0xCD, (b, s) =>
{
var v = _convert.ToUInt16(s.Read(2), 0);
return(new MPack(v, MPackType.UInt));
}, async(b, s, c) =>
{
var v = _convert.ToUInt16((await s.ReadAsync(2, c))
, 0);
return(new MPack(v, MPackType.UInt));
});
// uint32 0xce xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
_lookup.Add(0xCE, (b, s) =>
{
var v = _convert.ToUInt32(s.Read(4), 0);
return(new MPack(v, MPackType.UInt));
}, async(b, s, c) =>
{
var v = _convert.ToUInt32((await s.ReadAsync(4, c))
, 0);
return(new MPack(v, MPackType.UInt));
});
// uint64 0xcF xxxxxxxx (x4)
_lookup.Add(0xCF, (b, s) =>
{
var v = _convert.ToUInt64(s.Read(8), 0);
return(new MPack(v, MPackType.UInt));
}, async(b, s, c) =>
{
var v = _convert.ToUInt64((await s.ReadAsync(8, c)), 0);
return(new MPack(v, MPackType.UInt));
});
// array (uint16 length)
_lookup.Add(0xDC, (b, s) =>
{
ushort len = _convert.ToUInt16(s.Read(2), 0);
MPackArray array = new MPackArray();
for (ushort i = 0; i < len; i++)
{
array.Add(ParseFromStream(s));
}
return(array);
}, async(b, s, c) =>
{
ushort len = _convert.ToUInt16((await s.ReadAsync(2, c)), 0);
MPackArray array = new MPackArray();
for (ushort i = 0; i < len; i++)
{
array.Add(await ParseFromStreamAsync(s, c));
}
return(array);
});
// array (uint32 length)
_lookup.Add(0xDD, (b, s) =>
{
uint len = _convert.ToUInt32(s.Read(4), 0);
MPackArray array = new MPackArray();
for (uint i = 0; i < len; i++)
{
array.Add(ParseFromStream(s));
}
return(array);
}, async(b, s, c) =>
{
uint len = _convert.ToUInt32(await s.ReadAsync(4, c), 0);
MPackArray array = new MPackArray();
for (uint i = 0; i < len; i++)
{
array.Add(await ParseFromStreamAsync(s, c));
}
return(array);
});
// map (uint16 length)
_lookup.Add(0xDE, (b, s) =>
{
ushort len = _convert.ToUInt16(s.Read(2), 0);
MPackMap map = new MPackMap();
for (ushort i = 0; i < len; i++)
{
var flag = (byte)s.ReadByte();
var key = ReadString(flag, s);
var val = ParseFromStream(s);
map.Add(key, val);
}
return(map);
}, async(b, s, c) =>
{
ushort len = _convert.ToUInt16(await s.ReadAsync(2, c), 0);
MPackMap map = new MPackMap();
for (ushort i = 0; i < len; i++)
{
var flag = await s.ReadByteAsync(c);
var key = await ReadStringAsync(flag, s, c);
var val = await ParseFromStreamAsync(s, c);
map.Add(key, val);
}
return(map);
});
// map (uint32 length)
_lookup.Add(0xDF, (b, s) =>
{
uint len = _convert.ToUInt32(s.Read(4), 0);
MPackMap map = new MPackMap();
for (uint i = 0; i < len; i++)
{
var flag = (byte)s.ReadByte();
var key = ReadString(flag, s);
var val = ParseFromStream(s);
map.Add(key, val);
}
return(map);
}, async(b, s, c) =>
{
uint len = _convert.ToUInt32((await s.ReadAsync(4, c)), 0);
MPackMap map = new MPackMap();
for (uint i = 0; i < len; i++)
{
var flag = await s.ReadByteAsync(c);
var key = await ReadStringAsync(flag, s, c);
var val = await ParseFromStreamAsync(s, c);
map.Add(key, val);
}
return(map);
});
// str family
_lookup.AddRange(0xD9, 0xDB,
(b, s) => new MPack(ReadString(b, s), MPackType.String),
async(b, s, c) => new MPack((await ReadStringAsync(b, s, c)), MPackType.String));
// int8 0xD0 xxxxxxxx
_lookup.Add(0xD0,
(b, s) => new MPack((sbyte)s.ReadByte(), MPackType.SInt),
async(b, s, c) => new MPack((sbyte)await s.ReadByteAsync(c), MPackType.SInt));
// int16 0xd1 xxxxxxxx xxxxxxxx
_lookup.Add(0xD1, (b, s) =>
{
var v = _convert.ToInt16(s.Read(2), 0);
return(new MPack(v, MPackType.SInt));
}, async(b, s, c) =>
{
var v = _convert.ToInt16((await s.ReadAsync(2, c))
, 0);
return(new MPack(v, MPackType.SInt));
});
// int32 0xD2 xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
_lookup.Add(0xD2, (b, s) =>
{
var v = _convert.ToInt32(s.Read(4), 0);
return(new MPack(v, MPackType.SInt));
}, async(b, s, c) =>
{
var v = _convert.ToInt32((await s.ReadAsync(4, c))
, 0);
return(new MPack(v, MPackType.SInt));
});
// int64 0xD3 xxxxxxxx (x8)
_lookup.Add(0xD3, (b, s) =>
{
var v = _convert.ToInt64(s.Read(8), 0);
return(new MPack(v, MPackType.SInt));
}, async(b, s, c) =>
{
var v = _convert.ToInt64((await s.ReadAsync(8, c))
, 0);
return(new MPack(v, MPackType.SInt));
});
}