[Spread-users] Identifying the sender

Jonathan Stanton jonathan at cnds.jhu.edu
Wed Aug 18 12:09:53 EDT 2004

That is exactly what you want. A private group always has only "one" 
member. The reason it is called a private _group_ is that it can be used 
anywhere in spread that a regular 'group' can be used (to send to, receive 
from, in a list of receivers, etc). It just will never have more then one 

getSender will return the private group 
name of ONLY the sender of the message. So if A connected to daemon on 
machine "server1" and it sends a message to the group, all of the 
processes will get a message with the sender being "#A#server1" and the 
getSender method will retrieve it once the message is received.



On Wed, Aug 18, 2004 at 02:35:34PM +0000, Gustavo Castro wrote:
> Hum, i see what you say, but the problem is that i´m using the Java 
> interface for the spread. In order to receive, you do
> SpreadMessage message = connection.receive();
> with no calling to the SP_receive, and i don´t find out how to identify 
> the sender. There is this method, getSender, but according to the 
> definition it "Gets the message sender's private group." which would return 
> me all the members of the group, that is, A, B, C, D and E.
> What am i missing?
> Thank you so much!!

Jonathan R. Stanton         jonathan at cs.jhu.edu
Dept. of Computer Science   
Johns Hopkins University    

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