public bool ClearFirstPacket()
{
if (_sendBufferList.Count <= 0)
{
return(false);
}
int count = _sendBufferList[0].Count;
_bufferManager.Clear(count);
_sendBufferList.RemoveAt(0);
return(true);
}
protected virtual bool Receive(out byte[] buffer, out int offset, out int count)
{
_recvBuffer.Clear();
Client.Receive(_recvBuffer.Buffer, sizeof(int), SocketFlags.None);
int packetLength = BitConverter.ToInt32(_recvBuffer.Buffer, 0); //获取包长度
if (NetByteOrder)
{
packetLength = IPAddress.NetworkToHostOrder(packetLength); //把网络字节顺序转为本地字节顺序
}
//保证接收有足够的空间
_recvBuffer.SetBufferSize(sizeof(int) + packetLength);
Client.Receive(_recvBuffer.Buffer, sizeof(int), packetLength, SocketFlags.None);
OnReceive(_recvBuffer, packetLength, out buffer, out offset, out count);
return(true);
}
//接收异步事件返回的数据，用于对数据进行缓存和分包
internal bool ProcessReceive(byte[] buffer, int offset, int count)
{
_activeTime = DateTime.UtcNow;
DynamicBufferManager receiveBuffer = _token.ReceiveBuffer;
receiveBuffer.WriteBuffer(buffer, offset, count);
bool result = true;
while (receiveBuffer.Count > sizeof(int))
{
//按照长度分包
int packetLength = BitConverter.ToInt32(receiveBuffer.Buffer, 0); //获取包长度
if (NetByteOrder)
{
packetLength = IPAddress.NetworkToHostOrder(packetLength); //把网络字节顺序转为本地字节顺序
}
if ((packetLength > 10 * 1024 * 1024) | (receiveBuffer.Count > 10 * 1024 * 1024)) //最大Buffer异常保护
{
return(false);
}
if ((receiveBuffer.Count - sizeof(int)) >= packetLength) //收到的数据达到包长度
{
result = ProcessPacket(receiveBuffer.Buffer, sizeof(int), packetLength);
if (result)
{
receiveBuffer.Clear(packetLength + sizeof(int)); //从缓存中清理
}
else
{
return(result);
}
}
else
{
return(true);
}
}
return(true);
}
public void Send(byte[] buffer, int offset, int count)
{
_sendBuffer.Clear();
OnSend(_sendBuffer, buffer, offset, count);
Client.Send(_sendBuffer.Buffer, 0, _sendBuffer.Count, SocketFlags.None);
}