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Full Discussion: socket programming using udp for chat application
Top Forums UNIX for Dummies Questions & Answers socket programming using udp for chat application Post 302283493 by otheus on Tuesday 3rd of February 2009 11:23:14 AM
Old 02-03-2009
Hi there. I think you are confused about something. The server (as it is written) cannot distinguish between "client1" and "client2". So whichever client you start first becomes "client1". The value of c1 and of c depend on which client was talking to the server when the recvfrom() is called.

In order to do this right, I think, you have to build an array of clients, each of which you get after a call to recvfrom(). Then you write to all the clients in that array (except the one that matches the current one).
 

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LEARN ABOUT DEBIAN

multinode_server

MULTINODE_SERVER(1)						       MORSE						       MULTINODE_SERVER(1)

NAME

       multinode_server - Server program to synchronise several instances of MORSE

SYNOPSIS

       multinode_server [synchronisation delay]

DESCRIPTION

       Socket server program to synchronise several instances of MORSE (nodes) running the same simulation scenario.  This program must be started
       before launching the simulation in the nodes.

       All the client nodes will connect with the server and send it the updated positions of the robots they manage. The multinode_server program
       will concentrate the positions of all robots into a single Python dictionary, and then send it back to all clients.

       It  also  permits  pausing  the	simulation, by typing in its terminal p and Enter. The same command will allow the simulation to continue.
       This mechanism relies on the fact that the clients will remain waiting for a reply from the server before continuing with the simulation.

PARAMETERS

       [synchronisation delay]
	      Optional parameter that defines the delay (in seconds) between messages to the connected clients. A larger delay will slow down  the
	      simulation in all clients. Default value is 0.0

SEE ALSO

       morse(1) morseexec(1)

COPYRIGHT

       2009-2010, LAAS-CNRS/ONERA ; 2010-2012, LAAS-CNRS

0.5.2								   May 14, 2012 					       MULTINODE_SERVER(1)
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