ICE bidirectional connections 关键点
ICE是一套跨平台分布式通信框架。本文介绍ICE3.4.1的bidirectional connection特性。 客户端: C++:    1:  CallbackSenderPrx server = CallbackSenderPrx::checkedCast(communicator()->propertyToProxy("CallbackSender.Proxy"));   2:  
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