[eq-dev] Setting up reliable multicast (RSP) connections?

[cpapado]

Hey Stefan,

we are moving forward with our project and right now I am composing the
final eqc files. I have everything working with traditional TCPIP
connections, but I would like to try out RSP since TCPIP seems pretty slow
(especially when doing soft frame barriers).

I am trying to make an EQ config file based off the Hactar example that
ships with EQ. The resulting config looks like this:

http://pastebin.com/jf6ck6nZ

Then I try to launch each client by the following string:

"myEQApp.exe --eq-client --eq-listen clientHostName --eq-listen
clientHostName:RSP"

However, the client process will exit and complain about being unable to
create a listener connection.

It will try to join its interface on 0.0.0.0 and then complain that it can't
setup the underlying UDP connection...Am I missing something in this
process? I feel like the multicast address should be something other than
0.0.0.0 but I can't figure out a way to set it...

Thanks!

-Harris

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[Carsten Rohn]

Hey Harris,

In the RSP connection, the hostname is used to set the Multicast group, while the interface specifies the IP address of the adapter used for sending and receiving multicast packets. Your connection is supposed to look like this:

connection
{
hostname "224.0.0.1" #or any other address in the multicast address range
interface "<adapter-ip>"
port 12345 #optional
type RSP
bandwidth 102400 #optional
}

h2h,
Carsten

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[Stefan Eilemann]

Hi,

Adding to Carsten's general information:

On 6. May 2012, at 6:43, cpapado wrote:

> we are moving forward with our project and right now I am composing the
> final eqc files. I have everything working with traditional TCPIP
> connections, but I would like to try out RSP since TCPIP seems pretty slow
> (especially when doing soft frame barriers).

How do you come to this conclusion? In any case, barriers always use unicast connections. Multicast is used only for co::Object data distribution.