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From: david@dcl-cs.UUCP (David Coffield)
Newsgroups: net.unix-wizards
Subject: Broadcasting with sockets query
Message-ID: <205@dcl-cs.UUCP>
Date: Sat, 8-Jun-85 01:08:15 EDT
Article-I.D.: dcl-cs.205
Posted: Sat Jun  8 01:08:15 1985
Date-Received: Tue, 11-Jun-85 02:46:56 EDT
Reply-To: david@dcl-cs.UUCP (David Coffield)
Organization: Department of Computing at Lancaster University.
Lines: 23
Xpath: icdoc ivax

Can anyone suggest a checklist of things to do to get broadcasting to work
with sockets in the Internet domain?

I have a sender process and some receiver processes. The sender is supposed to
broadcast a message, the receivers pick it up and echo it to their screens.
Both sender and receiver programs work for "hardwired" addresses. Change the
sender to send a broadcast and nothing happens. The sender program is run as
root, since only root may send broadcast messages, and the broadcast address is
a 0 (actually 150.0.0.0 for our local set up).
The underlying net is an Ethernet.
The machines in question are a VAX 11/750 and SUN workstations (DEUNA and 3Com
controllers respectively).

Does anyone have any ideas what I may be doing wrong?

Thanks,
David.
-- 
NAME:	David Coffield			PHONE: +44 524 65201 ext 4150
UUCP:	...!ukc!icdoc!dcl-cs!david
DARPA:	david%lancs.comp@uk.ac.ucl.cs 	JANET: david@uk.ac.lancs.comp
POST:	University of Lancaster, Department of Computing,
	Engineering Building, Bailrigg, Lancaster, LA1 4YR, UK.