/// <summary>
/// 新建握手数据包
/// </summary>
/// <param name="key">密钥</param>
/// <param name="iv">初始化向量</param>
/// <returns>返回握手数据包</returns>
public static byte[] BuildHandshake(byte[] key, byte[] iv)
{
DictNode node = new DictNode();
node.Add("key", key);
node.Add("iv", iv);
return(BEncode.ByteArrayEncode(node));
}
/// <summary>
/// 建立失败打开数据包
/// </summary>
/// <param name="message">失败消息</param>
/// <returns>返回数据包</returns>
private byte[] BuildFailOpenPacket(string message)
{
DictNode result = new DictNode();
result.Add("code", 6);
result.Add("message", message);
return(BEncode.ByteArrayEncode(result));
}
/// <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>
/// 建立打开DB Proxy Server包
/// </summary>
/// <returns>返回数据包</returns>
private byte[] BuildOpenPacket()
{
DictNode rootNode = new DictNode();
rootNode.Add("action", 1);
rootNode.Add("deviceid", deviceId);
rootNode.Add("priority", priority);
return(BEncode.ByteArrayEncode(rootNode));
}
/// <summary>
/// 记录数据包
/// </summary>
/// <param name="buffer">待记录的数据包</param>
/// <param name="endPoint">IP端点</param>
public override void Write(byte[] buffer, IPEndPoint endPoint)
{
DictNode node = new DictNode();
node.Add("buffer", buffer);
node.Add("endpoint", endPoint.ToString());
byte[] sndMsg = BEncode.ByteArrayEncode(node);
handler.SendNormalPacket(sndMsg);
}
/// <summary>
/// 建立成功打开数据包
/// </summary>
/// <param name="key">密钥</param>
/// <param name="iv">初始化向量</param>
/// <returns>返回数据包</returns>
private byte[] BuildSuccessOpenPacket(byte[] key, byte[] iv)
{
DictNode result = new DictNode();
result.Add("code", 1);
result.Add("key", key);
result.Add("iv", iv);
return(BEncode.ByteArrayEncode(result));
}
/// <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>
/// 生成存储过程发送的字节流
/// </summary>
/// <returns>返回发送的字节流</returns>
private byte[] BuildProcMessage(DictNode contentNode)
{
contentNode.Add("text", commandText);
//建立参数列表
if (parameters.Count != 0)
{
ListNode parmsNode = new ListNode();
foreach (DbProxyParameter para in parameters)
{
DictNode parmNode = new DictNode();
parmNode.Add("name", para.ParameterName);
parmNode.Add("type", (int)para.DbType);
switch (para.Direction)
{
case ParameterDirection.Input:
parmNode.Add("value", NodeEncoder.GetValueNode(para));
break;
case ParameterDirection.Output:
parmNode.Add("direction", OutputNum);
break;
case ParameterDirection.InputOutput:
parmNode.Add("direction", InputOutputNum);
parmNode.Add("value", NodeEncoder.GetValueNode(para));
break;
case ParameterDirection.ReturnValue:
parmNode.Add("direction", ReturnValueNum);
break;
}
if (para.Size != 0)
{
parmNode.Add("size", para.Size);
}
parmsNode.Add(parmNode);
}
contentNode.Add("parms", parmsNode);
}
return(BEncode.ByteArrayEncode(contentNode));
}
/// <summary>
/// 生成SQL文本发送的字节流
/// </summary>
/// <returns>返回发送的字节流</returns>
private byte[] BuildTextMessage(DictNode contentNode)
{
contentNode.Add("text", commandText);
return(BEncode.ByteArrayEncode(contentNode));
}