public static void UnWrap(ref byte[] recvBuffer, ref int nRecvLen)
{
int offset = 0;
bool bCompress = false;
bool bEncrypt = false;
int nMessageLen = 0;
int datasize = nRecvLen;
int nPacketHeadLen = PacketConstDefine.PacketHeadLen;
//尝试读取包头
while (offset + nPacketHeadLen < datasize)
{
if (nMessageLen == 0)
{
//包头还没有读取过
//第一个字节 是否压缩
//第二个 + 第三个 代表包体长度
bCompress = (recvBuffer[offset] & 0x01) > 0;
bEncrypt = (recvBuffer[offset] & 0x02) > 0;
nMessageLen = CUtility.BytesToUshort(recvBuffer, offset + 1);
}
if (nMessageLen <= 0)
{
//GDebug.LogError("<color=red> 消息长度小于等于0 </color>");
offset += nPacketHeadLen;
nMessageLen = 0;
continue;
}
else if (offset + nMessageLen + nPacketHeadLen > datasize)
{
//byte offset0 = recvBuffer[offset];
//UInt16 offset12 = CUtility.BytesToUshort(recvBuffer, offset+1);
//byte offset3 = recvBuffer[offset + 3]; //大消息号
//byte offset4 = recvBuffer[offset + 4]; //小消息号
//GDebug.LogError("<color=red> 被拆分的包体 offset0 = " + offset0 + " offset12 = " + offset12 + " offset3 = " + offset3 + " offset4 = " + offset4 + " iscompress = " + m_bCompress + " m_nMessageLen = " + m_nMessageLen + " offset " + offset + " datasize " + datasize + "</color>");
break;
}
//尝试读取包体
if ((offset + nMessageLen + nPacketHeadLen) <= datasize)
{
//消息包头已经读取，并且剩下的数据足够读包体
//先解密再解压
byte[] bytes = CUtility.BytesToBytes(recvBuffer, offset + nPacketHeadLen, nMessageLen);
byte[] desdata;
if (bEncrypt)
{
Init();
desdata = dec.TransformFinalBlock(bytes, 0, bytes.Length);
}
else
{
desdata = bytes;
}
byte[] uncompressData;
// 判断是否需要解压
if (bCompress)
{
uncompressData = CUtility.deCompressBytes(desdata);
}
else
{
uncompressData = desdata;
}
NetWorkConnection.Instance.Push(uncompressData, (int)uncompressData.Length);
offset += nMessageLen + nPacketHeadLen;
nMessageLen = 0;
}
}
nRecvLen = datasize - offset;
if (nRecvLen > 0)
{
Array.Copy(recvBuffer, offset, recvBuffer, 0, nRecvLen);
}
}