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The process has been blocked，so you cannot use Ctrl c to kill the node. However, it is not recommended to allow the program to work in a blocked state.You can use function selectselect when you use readto get some data in UDP or serial port process.

The process has been blocked，so you cannot use Ctrl c to kill the node. However, it is not recommended to allow the program to work in a blocked state.You can use function select~~select~~ when you use readto get some data in UDP or serial port process.

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