How to use the payload (message.data()) about arduinowebsockets HOT 5 CLOSED

Hi Den,
I'm glad to hear it's going well.

The returned object is an Arduino String. You should be able to access it just like a char array. You can also call .c_str() on the string and it will return you the underlying buffer.

Good luck and best regards,
Gil.

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Hi Gil
Thanks for the well wishes ;-)
Do you possibly have an example ?
Instead of String is there an existing char array that can be accessed ? This would save having to use more memory space to create extra variables for character field tests etc.

My incoming message looks like this :
# 100 test test 1234567890 1234567890 Normal 1234 12 1 1

I am currently testing and sorting first character (in the above example a # character) , based on result I decide what to do with the rest of the data.

I hope you can help
PS.
Not quite sure what you mean by this :
You can also call .c_str() on the string and it will return you the underlying buffer.

Kind regards
Den

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I mean you could do:

const char* raw_message_data = message.data().c_str();

And then use the char* as you did before.

Returning a char* might sound like a better idea but it has so many issues with memory management and ownership problems. I think it worth spending some efficiency in order to protect the user.

You could do:

auto data = message.data();

if (data[0] == '#') {
  // Do something
}

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Hi Gill

Thank you kindly for the advice and code bits .. experimenting as we speak :-)

Kind regards
Den

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:)

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