Re: [certi-dev] Network traffic

[Eric Noulard]

2015-05-29 11:40 GMT+02:00 Alisson Brito <address@hidden>:

Dears

Where could I read about the network traffic generated by Certi (UDP, TCP)?

You could read that:
http://download.savannah.gnu.org/releases/certi/papers/CERTI-GenMsg-presentation-6june2011.pdf

and have an overview of CERTI message based communication archietcture.
and may be that
http://download.savannah.gnu.org/releases/certi/papers/Pancik2010_Thesis.pdf

 

You'll see that for each HLA services a bunch of messages are exchange between Federate and RTIA process

(over a Unix Socket on Unix and a TCP socket on Windows) and between RTIA and RTIG through a TCP socket.

If "Reliable" transport is required then you get TCP connection

if "Best effort" transport is used then you should get UDP connection, however AFAIK not so many users uses UDP

and the level of testing of UDP usage is currently  low.

Also, how could I configure a Federation for only have at a time transmission from machine A to B, where A and B are any machines from the Federation?

Currently you can't do that.

Every RTIA attached to each federate willl connect to a single RTIG (this the CRC of CERTI architecture).

So if RTIG is running of machine A then every federate will connect to A from whereever they are.

What you want is some hierarchical communication arch. and/or some kind of proxy/redirection.

The only workaround I can imagine is to:

- run RTIG on machine A

- run a proxy server on machine B

make all federate use proxy connection B to A.

see informations there:
http://www.nongnu.org/certi/certi_doc/User/html/execute.html

for using proxy.

Eric

Best regards,

Alisson Brito, Dr. 

Professor Adjunto III
Vice-Coordenador do Programa de Pós-Graduação em Informática (PPGI) - www.ppgi.di.ufpb.br 
Centro de Informática (CI) - www.ci.ufpb.br
Universidade Federal da Paraiba (UFPB) - www.ufpb.br

   

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Eric