[Spread-users] Re: Please help me understand

apocalypznow apocalypznow at gmail.com
Wed Feb 9 16:16:08 EST 2005

Thanks John for your answer.  After reading it, here is what my 
spread.conf file will look like.  I am providing it here to ensure I've 
understood what you said:

Spread_Segment {
Spread_Segment {
Furthermore, machA_100 and machB_102 are port-forwarding 4803 to those 
machines from their respective routers.  There should be at least 2 
daemons running, one on machA_100 and the other on machB_102.  machA_101 
  should connect to the daemon on machA_100.  machB_103 should connect 
to the daemon on machB_102.  machA_100 and machB_102 should connect to 
daemons on their localhost.

Do I get it now, or am I still in the dark?

John Schultz wrote:
> apocalypznow wrote:
>> Hi I'm a noob... so please bear with me.
>> I am trying to set up 4 machines on 2 networks, which would all join 
>> the same group "chat01" and hopefully be able to message each other 
>> using multicast() with either RELIABLE_MESS or FIFO_MESS.
>> Two machines are at, and their ips are and 
>>  Two other machines are at and their ips 
>> are at and  Port 4803 is open on each of 
>> the two routers.  Networks and are only 
>> connected on the internet.
>> I've tried various configurations in my spread.conf file and I can't 
>> get all 4 machines to see any messages sent to the same group "chat01".
>> Questions:
>> 1) How should my spread.conf be set up - specifically the segments and 
>> anything else?
> You should probably have two segments corresponding to the two separate 
> networks -- assuming that by "networks" you mean that machines within 
> these "networks" can 1 hop broadcast or multicast to each another.
>> 2) Where do I run the daemons?
> You should run the daemons on machines whose IP addresses are accessible 
>  (i.e. - routable) by all other daemons in the config file.  So the 
> daemons should be run on machines in those networks that can reach the 
> daemons on the other network.
>> 3) How many daemons should I run?
> This is up to you.  But generally you should run at least one daemon per 
> network that will have clients and usually even run 1 daemon on each 
> machine that will have clients.  You run more daemons both for network 
> efficiency and for fault tolerance.
>> 4) To which daemon should each machine connect to?
> Each machine should connect to the closest daemon that it can.  Usually, 
>   this is often a connection to a daemon on the same local machine. 
> However, since it seems your client machines will be on private networks 
> that would not be routable by all daemons, you will probably need to 
> remotely connect to the closest daemon with a public IP.

More information about the Spread-users mailing list