public virtual void UnPackage(byte[] receiveData, Action <byte[]> action)
{
//当前包取内容的
if (offset == 0)
{
var packageLength = 0;
if (this._myLenBuffer != null) //长度不完整的（包头不完整的）
{
//调整receiveData包内容
var nData = new byte[this._myLenBuffer.Length + receiveData.Length];
Buffer.BlockCopy(this._myLenBuffer, 0, nData, 0, this._myLenBuffer.Length);
Buffer.BlockCopy(receiveData, 0, nData, this._myLenBuffer.Length, receiveData.Length);
receiveData = nData;
nData = null;
this._myLenBuffer = null;
}
else //全新包（包头完整的）
{
packageLength = TcpPackage.GetLength(receiveData);
if (packageLength == 0)
{
return;
}
}
if (packageLength < receiveData.Length)
{
var package = TcpPackage.Parse(receiveData);
if (action != null && package != null)
{
action(package.Content);
var slen = TcpPackage.GetLength(receiveData, package.Length);
if (slen >= 9)
{
var next = new byte[receiveData.Length - package.Length];
Buffer.BlockCopy(receiveData, package.Length, next, 0, next.Length);
this.UnPackage(next, action);
}
}
}
else if (packageLength == receiveData.Length)
{
var package = TcpPackage.Parse(receiveData);
if (action != null && package != null)
{
action(package.Content);
}
}
else if (packageLength > receiveData.Length)
{
this.count = packageLength;
this._myBuffer = new byte[packageLength];
Buffer.BlockCopy(receiveData, 0, this._myBuffer, 0, receiveData.Length);
this.offset = receiveData.Length;
}
Array.Clear(receiveData, 0, receiveData.Length);
receiveData = null;
}
else //跨包取内容的
{
if (receiveData.Length + offset < count) //包内容超出
{
Buffer.BlockCopy(receiveData, 0, this._myBuffer, offset, receiveData.Length);
offset += receiveData.Length;
}
else if (receiveData.Length + offset >= count) //包内容短的
{
var packageLast = count - offset;
Buffer.BlockCopy(receiveData, 0, this._myBuffer, offset, packageLast);
var package = TcpPackage.Parse(this._myBuffer);
if (action != null && package != null)
{
action(this._myBuffer);
}
Array.Clear(this._myBuffer, 0, this._myBuffer.Length);
this._myBuffer = null;
count = offset = 0;
var receiveLast = receiveData.Length - packageLast;
if (receiveLast >= 4)//包含包头长度
{
var packageLength = TcpPackage.GetLength(receiveData, packageLast);
if (packageLength > 0)
{
if (receiveLast > packageLength)
{
var nextData = new byte[receiveLast];
Buffer.BlockCopy(receiveData, packageLast, nextData, 0, receiveLast);
this.UnPackage(nextData, action);
}
else
{
this._myBuffer = new byte[packageLength];
Buffer.BlockCopy(receiveData, packageLast, this._myBuffer, 0, receiveLast);
offset = receiveLast;
count = packageLength;
}
}
else
{
Array.Clear(this._myBuffer, 0, this._myBuffer.Length);
this._myBuffer = null;
count = offset = 0;
Array.Clear(this._myLenBuffer, 0, this._myLenBuffer.Length);
this._myLenBuffer = null;
}
}
else if (receiveLast > 0)//不包含包头长度
{
this._myLenBuffer = new byte[receiveLast];
Buffer.BlockCopy(receiveData, packageLast, this._myLenBuffer, 0, receiveLast);
if (TcpPackage.GetLength(this._myLenBuffer) == 0)
{
Array.Clear(this._myLenBuffer, 0, this._myLenBuffer.Length);
this._myLenBuffer = null;
}
Array.Clear(this._myBuffer, 0, this._myBuffer.Length);
this._myBuffer = null;
count = offset = 0;
}
}
receiveData = null;
}
}