取得通讯物件叫用之传送方法逾时前所经过的时间间隔。
Gets the interval of time after which the open method, invoked by a communication object, times out.
网路执行程序会将零的值解译为,基础网路堆叠应该负责等候逾时间隔。
The network executor interprets a value of zero to mean that it is the responsibility of the underlying network stack to wait for the time out interval.
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