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MQTT 示例程序 不能连接到broker

Other Parts Discussed in Thread: CC3200

MQTT 示例程序 不能连接到broker。

运行CC3200 程序 提示  Connection to broker failed

运行m2m.demos.ibm.com/.../   提示 Failed to connect to messagesight.ibm.com:1883

请问是我设置有问题吗?

还是 http://m2m.demos.ibm.com 这个现在不能用了?

谢谢!