UDP | UDP implementation using RAW SOCKET in Python | Socket library

I believe what you want is the following:

1. This version already has a built-in jager tracer, see the documentation.
2. In order for the events to be nested, it is necessary to transfer the context inside the actions, use ctx.call calls instead of broker.call, so they will be nested.
3. To quickly receive support for the moleculer, join us in discord!

Search your code for where the @interface for ESPTaskParameter is defined, that will be in some .h file. Then, make sure the .m file #imports that header file. If it doesn’t the there would indeed be no visible interface defining the selector you want to call to the .m file that is trying to call it

And check that the interface .h does indeed declare a public setter for broadcast.

Try below code to initialise Host and a Port.

Host-:

As described in this question/answer, it's a matter of avoiding packet fragmentation. Sending packages above this size will force the system to split them up into multiple fragments of size MTU, with each of them being individually unreliable. As memory is already very limited on embedded systems, sending large (> MTU) packages where all fragments has to arrive before it can be processed, can be very unfortunate for the overall application behavior as it can time out or go out-of-memory.

Instead the application should look at a streaming pipeline (perhaps even TCP to handle the unreliable aspects as well).

As TCP/IP is a streaming protocol, any sized "packages" can be sent, as they are automatically split into fragments of size MTU. Note that the data is received in "random"-sized packages, though the order of the bytes is fully preserved.

The way the output looks is controlled by the layout. The message is formatted. You can tell it to output raw with a ${message:raw=true} declaration.

The default layout is:

${longdate}|${level:uppercase=true}|${logger}|${message}

So we would change that to:

${longdate}|${level:uppercase=true}|${logger}|${message:raw=true}

You would add this option to your target like so:

That is because using 2's complement may give you a wrong result if the sender and receiver machines have different endianness.

If we use the example:

0000 1111 1110 0000 1111 0000 0001 0000

the checksum with 2's complement calculated on a little-endian machine would be:

0000 0000 0001 0000

if we added our original data to this checksum on a big-endian machine we would get:

0000 0000 1111 1111

which would suggest that our checksum was wrong even though it was not. However, 1's compliments results are independent of the endianness of the machine so if we were to do the same thing with a 1's complement number our checksum would be:

0000 0000 0000 1111

which when added together with the data would get us:

1111 1111 1111 1111

which allows the short UDP checksum to work without requiring both the sender and receiver machines to have the same endianness.

1. as noted by @CeriseLimon : don't make the goroutine block on each iteration, move wg.Wait() outside of the loop
2. don't forget to call wg.Done() from within each goroutine : add a call to defer wg.Done() in each function

(since your listening goroutines never return, the second point is a bit theoretical ... obviously, add some code to have your listening goroutines do something, and exit cleanly if possible)

Your main method sits in the while (true) loop, so the start_btnClicked method never returns.

Instead of calling main, why not make your Server class implement Runnable. Then, when the button is clicked you can instantiate a Server and start it, which will return allow the start method to return