protected void ScanPackets()
{
bool packetFound = false;
do
{
packetFound = false;
//如果大于包头长度
if (m_recBufOffset >= MinPacketSize)
{
PacketHeader header = new PacketHeader();
header.HeaderSign = BitConverter.ToInt16(m_recBuf, 0);
header.BodySize = BitConverter.ToInt32(m_recBuf, sizeof(Int16));
int dwPkgLen = (int)(MinPacketSize + header.BodySize);
if (m_recBufOffset >= dwPkgLen)
{
//接收到了一个完整的数据包
packetFound = true;
header.RandSeed = (byte)BitConverter.ToChar(m_recBuf, sizeof(Int16) + sizeof(Int32));
header.CheckSum = (byte)BitConverter.ToChar(m_recBuf, sizeof(Int16) + sizeof(Int32) + sizeof(byte));
header.Compress = BitConverter.ToInt32(m_recBuf, sizeof(Int16) + sizeof(Int32) + sizeof(byte) * 2);
header.CMD = BitConverter.ToInt16(m_recBuf, sizeof(Int16) + sizeof(Int32) * 2 + sizeof(byte) * 2);
header.Index = BitConverter.ToInt16(m_recBuf, sizeof(Int16) * 2 + sizeof(Int32) * 2 + sizeof(byte) * 2);
//将数据表扔到接收队列里
RecvBuffer msg = null;
lock (cacheRecvMsgs)
{
msg = cacheRecvMsgs.Get();
}
msg.tick = DateTime.Now.Ticks;
msg.cmd = header.CMD;
//解包数据流
if (header.BodySize != 0)
{
PacketUtil.Decrypt(m_recBuf, PacketHeader.Length, header.BodySize);
if (header.GetCompressType() == (int)CompressType.LZ4)
{
int len = header.GetUnCompressLength();
PacketUtil.uncompress_lz4(m_recBuf, PacketHeader.Length, header.BodySize, msg.data, len);
msg.length = len;
}
else
{
msg.length = header.BodySize;
Utils.CopyTo(m_recBuf, PacketHeader.Length, msg.data, 0, msg.length);
}
}
lock (m_netMgr.recvMsgs)
{
m_netMgr.recvMsgs.Enqueue(msg);
}
//接收缓冲区数据往回移
int offset = dwPkgLen;
if (m_recBufOffset > offset)
{
for (int i = offset, j = 0; i < m_recBufOffset; i++, j++)
{
m_recBuf[j] = m_recBuf[i];
}
m_recBufOffset -= offset;
}
else
{
m_recBufOffset = 0;
}
}
}
}while (packetFound && !IsTerminateFlagSet());
}