public HandshakeServerHello(ProtocolVersion version) : base(HandshakeMessageType.ServerHello, version)
{
ServerVersion = version;
Random = new HandshakeRandom();
SessionID = new byte[0];
CipherSuite = 0x0000;
CompressionMethod = 0x00;
Extensions = new List <HelloExtension>();
}
public HandshakeClientHello(ProtocolVersion version) : base(HandshakeMessageType.ClientHello, version)
{
ClientVersion = version;
Random = new HandshakeRandom();
SessionID = new byte[0];
Cookie = new byte[0];
CipherSuites = new List <UInt16>();
CompressionMethods = new List <Byte>();
Extensions = new List <HelloExtension>();
}
public HandshakeClientHello(ProtocolVersion version)
: base(HandshakeMessageType.ClientHello, version)
{
ClientVersion = version;
Random = new HandshakeRandom();
SessionID = new byte[0];
Cookie = new byte[0];
CipherSuites = new List<UInt16>();
CompressionMethods = new List<Byte>();
Extensions = new List<HelloExtension>();
}
protected override void DecodeDataBytes(ProtocolVersion ver, byte[] data)
{
MemoryStream memStream = new MemoryStream(data);
HandshakeStream stream = new HandshakeStream(memStream);
byte major = stream.ReadUInt8();
byte minor = stream.ReadUInt8();
ServerVersion = new ProtocolVersion(major, minor);
byte[] randomBytes = stream.ReadBytes(32);
Random = new HandshakeRandom(randomBytes);
int idLength = (int)stream.ReadUInt8();
SessionID = stream.ReadBytes(idLength);
CipherSuite = stream.ReadUInt16();
CompressionMethod = stream.ReadUInt8();
byte[] extensionList = new byte[0];
if (!stream.EndOfStream && ServerVersion.HasExtensions)
{
UInt16 extensionListLength = stream.ReadUInt16();
extensionList = stream.ReadBytes(extensionListLength);
}
stream.ConfirmEndOfStream();
int pos = 0;
while (pos + 4 <= extensionList.Length)
{
UInt16 extensionType = (UInt16)((extensionList[pos] << 8) | extensionList[pos + 1]);
UInt16 extensionDataLength = (UInt16)((extensionList[pos + 2] << 8) | extensionList[pos + 3]);
pos += 4;
if (pos + extensionDataLength > extensionList.Length)
{
throw new AlertException(AlertDescription.IllegalParameter,
"ServerHello extension data length too large: " + extensionDataLength);
}
byte[] extensionData = new byte[extensionDataLength];
Buffer.BlockCopy(extensionList, pos, extensionData, 0, extensionData.Length);
pos += extensionData.Length;
Extensions.Add(new HelloExtension(extensionType, extensionData));
}
}
protected override void DecodeDataBytes(ProtocolVersion ver, byte[] data)
{
CipherSuites.Clear();
CompressionMethods.Clear();
MemoryStream memStream = new MemoryStream(data);
HandshakeStream stream = new HandshakeStream(memStream);
byte major = stream.ReadUInt8();
byte minor = stream.ReadUInt8();
ClientVersion = new ProtocolVersion(major, minor);
byte[] randomBytes = stream.ReadBytes(32);
Random = new HandshakeRandom(randomBytes);
int idLength = (int) stream.ReadUInt8();
SessionID = stream.ReadBytes(idLength);
if (ClientVersion.IsUsingDatagrams) {
int cookieLength = (int) stream.ReadUInt8();
Cookie = stream.ReadBytes(cookieLength);
}
int cipherLength = (int) stream.ReadUInt16();
for (int i=0; i<cipherLength; i+=2) {
CipherSuites.Add(stream.ReadUInt16());
}
int compressionLength = (int) stream.ReadUInt8();
for (int i=0; i<compressionLength; i++) {
CompressionMethods.Add(stream.ReadUInt8());
}
byte[] extensionList = new byte[0];
if (!stream.EndOfStream && ClientVersion.HasExtensions) {
UInt16 extensionListLength = stream.ReadUInt16();
extensionList = stream.ReadBytes(extensionListLength);
}
stream.ConfirmEndOfStream();
int pos = 0;
while (pos+4 <= extensionList.Length) {
UInt16 extensionType = (UInt16) ((extensionList[pos] << 8) | extensionList[pos+1]);
UInt16 extensionDataLength = (UInt16) ((extensionList[pos+2] << 8) | extensionList[pos+3]);
pos += 4;
if (pos+extensionDataLength > extensionList.Length) {
throw new AlertException(AlertDescription.IllegalParameter,
"ClientHello extension data length too large: " + extensionDataLength);
}
byte[] extensionData = new byte[extensionDataLength];
Buffer.BlockCopy(extensionList, pos, extensionData, 0, extensionData.Length);
pos += extensionData.Length;
Extensions.Add(new HelloExtension(extensionType, extensionData));
}
}