NetworkDoubleBaseGetAvailableSocket 方法

获取本次操作的可用的网络通道，如果是短连接，就重新生成一个新的网络通道，如果是长连接，就复用当前的网络通道。
Obtain the available network channels for this operation. If it is a short connection, a new network channel is regenerated. If it is a long connection, the current network channel is reused.

protected OperateResult<Socket> GetAvailableSocket()

Protected Function GetAvailableSocket As OperateResult(Of Socket)

protected:
OperateResult<Socket^>^ GetAvailableSocket()

member GetAvailableSocket : unit -> OperateResult<Socket>