/// <summary>
/// 封装数据包
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
private byte[] MakeData(byte[] data)
{
byte[] retBuffer = null;
//1.判断是否压缩
bool isCompress = data.Length > mCompressLen ? true : false;
if (isCompress)//进行压缩
{
data = ZlibHelper.DeCompressBytes(data);
}
//2.先异或
data = SecurityUtil.Xor(data);
//3.校验
ushort crc = Crc16.CalculateCrc16(data);
using (ByteMemoryStream ms = new ByteMemoryStream())
{
ms.WriteUShort((ushort)(data.Length + 3));
ms.WriteBool(isCompress);
ms.WriteUShort(crc);
ms.Write(data, 0, data.Length);
retBuffer = ms.ToArray();
}
return(retBuffer);
}
//接收数据回调
private void ReceiveCallBack(IAsyncResult ar)
{
try
{
int len = m_Client.EndReceive(ar);
if (len > 0)//已经接收到数据
{
//把接收到的数据写入缓冲数据流的尾部
m_ReceiveMS.Position = m_ReceiveMS.Length;
//把长度的字节写入数据流
m_ReceiveMS.Write(m_ReceiveBuffer, 0, len);
//如果缓存数据流的长度大于2说明至少有个不完整的包传递过来,因为包头为ushort长度为2
if (m_ReceiveMS.Length > 2)
{
//进行循环拆分数据包
while (true)
{
//把数据流指针位置放在0处
m_ReceiveMS.Position = 0;
//currMsgLen =包体的长度
int currMsgLen = m_ReceiveMS.ReadUShort();
//总包的长度
int currFullMsgLen = 2 + currMsgLen;
if (m_ReceiveMS.Length >= currFullMsgLen)
{
//至少收到一个完整包
//定一包体的buffer
byte[] buffer = new byte[currMsgLen];
//把数据流指针位置放在包体处
m_ReceiveMS.Position = 2;
//把包体读到buffer中
m_ReceiveMS.Read(buffer, 0, currMsgLen);
//把数据压入队列
lock (m_ReceiveQueue)
{
m_ReceiveQueue.Enqueue(buffer);
}
//==========处理剩余字节数组=========
//剩余包长度
int remainLen = (int)m_ReceiveMS.Length - currFullMsgLen;
if (remainLen > 0)
{
//把指针放在第一个包的尾部
m_ReceiveMS.Position = currFullMsgLen;
//定义剩余字节数据组
byte[] remainBuffer = new byte[remainLen];
//把数据流得到剩余字节数组
m_ReceiveMS.Read(remainBuffer, 0, remainLen);
//请空数据流
m_ReceiveMS.Position = 0;
m_ReceiveMS.SetLength(0);
//把剩余字节数组重新写入数据流
m_ReceiveMS.Write(remainBuffer, 0, remainBuffer.Length);
remainBuffer = null;
}
else
{
//没有剩余字节
//请空数据流
m_ReceiveMS.Position = 0;
m_ReceiveMS.SetLength(0);
break;
}
}
else
{
//还没有收到完整包
break;
}
}
}
//进行下一次接收数据包
ReceiveMsg();
}
else
{
//服务器断开连接
Debug.Log(string.Format("服务器{0}断开连接", m_Client.RemoteEndPoint.ToString()));
}
}
catch
{
//服务器断开连接
Debug.Log(string.Format("服务器{0}断开连接", m_Client.RemoteEndPoint.ToString()));
}
}