Configuring Node Descriptors for Message Passing between 2 BBB

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Hi,

I want to communicate between 2 BBBs using message passing over Ethernet.

What is the method to configure the node descriptors? i.d., the “nd” parameter used in the Msgsend() and Msgrcv().

Thanks

Raman V

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On Tue, 10 Jul 2018 00:34:59 -0700 (PDT),
ramanv.india@gmail.com declaimed the
following:

Hi,

I want to communicate between 2 BBBs using message passing over Ethernet.

What is the method to configure the node descriptors? i.d., the "nd"
parameter used in the Msgsend() and Msgrcv().

  Please provide links to the documentation for those functions.

  The only ones I've found are for SysV style message queues (where it is
msgsnd, not msgsend) https://linux.die.net/man/2/msgrcv (and the POSIX
replacement thereof https://linux.die.net/man/7/mq_overview ) -- neither of
which mention a "node descriptor" (neither do the two libraries I've found
for node.js)

  Furthermore, the SysV/POSIX message queues are local memory structures
only, used for passing data between processes on the single computer --
they do not transfer data between computers via any network (or even UART).

  For the most part, anything going over Ethernet will have to define a
protocol -- not to mention if it will be TCP or UDP; and on Linux (and most
all other OS), you will be using the socket library to perform this.

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Forgot to mention that the Beagle Bones would be running QNX Neutrino RTOS…