public override void ParseBytes(byte[] data)
{
if (Version == P2PVersion.P2PV1)
{
base.ParseBytes(data);
P2Pv1Header head = this.V1Header;
Guid = new Guid(
(int)head.AckSessionId,
(short)(head.AckIdentifier & 0x0000FFFF),
(short)((head.AckIdentifier & 0xFFFF0000) >> 16),
(byte)((head.AckTotalSize & 0x00000000000000FF)),
(byte)((head.AckTotalSize & 0x000000000000FF00) >> 8),
(byte)((head.AckTotalSize & 0x0000000000FF0000) >> 16),
(byte)((head.AckTotalSize & 0x00000000FF000000) >> 24),
(byte)((head.AckTotalSize & 0x000000FF00000000) >> 32),
(byte)((head.AckTotalSize & 0x0000FF0000000000) >> 40),
(byte)((head.AckTotalSize & 0x00FF000000000000) >> 48),
(byte)((head.AckTotalSize & 0xFF00000000000000) >> 56)
);
}
else
{
// Don't call base.ParseBytes(); Data is 16 bytes for v2.
Guid = HashedNonceGenerator.CreateGuidFromData(Version, data);
}
InnerBody = new byte[0];
}
private P2PDCHandshakeMessage VerifyHandshake(byte[] data)
{
P2PVersion authVersion = P2PVersion.P2PV1;
P2PDCHandshakeMessage ret = null;
if (data.Length == 48)
{
authVersion = P2PVersion.P2PV1;
}
else if (data.Length == 16)
{
authVersion = P2PVersion.P2PV2;
}
else
{
Trace.WriteLineIf(Settings.TraceSwitch.TraceWarning,
"Invalid handshake length, the data was: " + Encoding.ASCII.GetString(data), GetType().Name);
return(null);
}
if (authVersion != this.version)
{
Trace.WriteLineIf(Settings.TraceSwitch.TraceWarning,
String.Format("Received version is {0}, expected {1}", authVersion, this.version), GetType().Name);
return(null);
}
P2PDCHandshakeMessage incomingHandshake = new P2PDCHandshakeMessage(version);
incomingHandshake.ParseBytes(data);
Guid incomingGuid = incomingHandshake.Guid;
if (incomingHandshake.Version == P2PVersion.P2PV1 && (P2PFlag.DirectHandshake != (incomingHandshake.V1Header.Flags & P2PFlag.DirectHandshake)))
{
Trace.WriteLineIf(Settings.TraceSwitch.TraceWarning,
"Handshake flag not set for v1, the flag was: " + incomingHandshake.V1Header.Flags, GetType().Name);
return(null);
}
Guid compareGuid = incomingGuid;
if (needHash)
{
compareGuid = HashedNonceGenerator.HashNonce(compareGuid);
}
if (this.nonce == compareGuid)
{
ret = new P2PDCHandshakeMessage(version);
ret.ParseBytes(data); // copy identifiers
ret.Guid = compareGuid; // set new guid (hashed)
ret.Header.Identifier = 0; // our id
return(ret); // OK this is our handshake message
}
return(null);
}
