Need help with LUA script

[Deivydas 1]

Hello,

I'm writing an Quick App for controlling device using UDP protocol. It's seems to be working, but I have some additional questions.

 

1. I'm using @tinman QA lib for aes128. When I decrypt response from device I received json formated string with additionals spaces at the end:

{"t":"dev","cid":"111111","bc":"000000000000000000000000000000","brand":"gree","catalog":"gree","mac":"111111","mid":"10001","model":"gree","name":"12312312312","series":"gree","vender":"1","ver":"V1.2.1","lock":0}

OR

{"t":"bindok","mac":"111111","key":"12312312312","r":200}

 

And here is the problem, that if the spaces are at the end, I cannot do json.decode to get exactly value, any solution?

 

2. Can't understand why result return in function return nil value. When I debug it it have value, but how to return this value for other function? 

 

Thanks

 

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Edited October 27, 2022 by Deivydas

[Joep 103]

1 hour ago, Deivydas said:

And here is the problem, that if the spaces are at the end, I cannot do json.decode to get exactly value, any solution?

You can trim the string with: 

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[Deivydas 1]

Ok, the problem was that I cannot use json.decode because that I was using AES library wrong way.

 

I made changes from code below:

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To this code:

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After that - json.decode(response) is working

Edited October 25, 2022 by Deivydas
Post updated

[Joep 103]

Thank you for replying the correct code so people can learn from it.

And good to hear your integration works now.