蓝牙聊天源码可以实现两个蓝牙间的单方面通讯，但是只是单方面的。只能是客户端消息发往服务端。客户端收不到服务端的消息。(Bluetooth chat source can achieve single - sided communication between two Bluetooth, but only unilateral. The client message can only be sent to the server. The client does not receive messa