private ValueDictionary parseBEncodeDict(MemoryStream responseStream)
{
ValueDictionary dictionary = null;
if ((this._contentEncoding == "gzip") || (this._contentEncoding == "x-gzip"))
{
GZipStream d = new GZipStream(responseStream, CompressionMode.Decompress);
try
{
dictionary = (ValueDictionary)BEncode.Parse(d);
}
catch (Exception)
{
}
return(dictionary);
}
try
{
dictionary = (ValueDictionary)BEncode.Parse(responseStream);
}
catch (Exception exception)
{
Console.Write(exception.StackTrace);
}
return(dictionary);
}
/// <summary>
///
/// </summary>
/// <param name="key"></param>
/// <param name="iv"></param>
/// <returns></returns>
private byte[] BuildAckMessage(byte[] key, byte[] iv)
{
DictNode node = new DictNode();
node.Add("key", key);
node.Add("iv", iv);
return(BEncode.ByteArrayEncode(node));
}
/// <summary>
/// 建立连接包
/// </summary>
/// <returns></returns>
private byte[] BuildHandshakeMessage()
{
DictNode node = new DictNode();
node.Add("port", clientPort);
node.Add("key", key);
node.Add("iv", iv);
return(BEncode.ByteArrayEncode(node));
}
/// <summary>
/// 交互函数
/// </summary>
/// <param name="stateInfo"></param>
internal void Exchange(object stateInfo)
{
try
{
isClose = false;
do
{
byte[] rcvMsg = handler.ReceiveSealedPacket();
DictNode responseNode = HandlePacket(rcvMsg);
byte[] sndMsg = BEncode.ByteArrayEncode(responseNode);
handler.SendSealedPacket(sndMsg);
if (isClose)
{
return;
}
} while (true);
}
catch (TdsException te)
{
Console.WriteLine("Tds Exception:{0}", te.Message);
}
catch (PacketException pe)
{
Console.WriteLine("Packet Exception:{0}", pe.Message);
}
catch (IOException ioe)
{
Console.WriteLine("IO Exception:{0}", ioe.Message);
}
catch (SocketException se)
{
Console.WriteLine("Socket Exception:{0}", se.Message);
}
catch (BEncodingException bee)
{
Console.WriteLine("BEncoding Exception:{0}", bee.Message);
}
finally
{
monitor.Unregister(handler);
handler.Close();
}
}
/// <summary>
/// 检验打开数据包
/// </summary>
/// <param name="packet">打开数据包</param>
/// <param name="key">密钥</param>
/// <param name="iv">初始化向量</param>
/// <param name="error">错误信息</param>
/// <returns>如果打开成功,返回ture,否则返回false</returns>
private bool CheckOpenPacket(byte[] packet, out byte[] key, out byte[] iv, out string error)
{
key = null;
iv = null;
port = -1;
error = string.Empty;
try
{
DictNode node = (DictNode)BEncode.Decode(packet);
if (node.ContainsKey("key") && node.ContainsKey("iv"))
{
key = ((BytesNode)node["key"]).ByteArray;
iv = ((BytesNode)node["iv"]).ByteArray;
return(true);
}
error = "数据包不包含密钥或者初始化向量或者端口信息!";
}
catch (BEncodingException bee)
{
error = bee.Message;
}
return(false);
}
