On 10/05/11 01:40 PM, Matteo Sisti Sette wrote:
On 05/10/2011 06:56 PM, Martin wrote:
I don't have any trouble here with [udpsend] and debian lenny.
I don't have any trouble with [udpsend] either. It's [netsend 1] that
can't broadcast (neither in Pd Vanilla 0.42.5 nor Pd Extended 0.42.5)
Any time you get permission denied it's up to you to set the
permissions. (If a program could do that, why have permissions at all?)
That sounds very reasonable, but then how comes that [udpsend] can
broadcast packets and [netsend 1] can't (on the same system, same
machine, I've tried both right now)?
My guess is that either
A) [netsend 1] is doing something wrong, trying to do something that
is not really necessary and that requires some permissions that the
program doesn't have
B) it is printing a wrong error message and the failure is not really
due to a denied permission.
OK I see now. [udpsend] has this in it right after the socket is created:
/* Based on zmoelnig's patch 2221504:
Enable sending of broadcast messages (if hostname is a broadcast address)*/
#ifdef SO_BROADCAST
if( 0 != setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, (const void
*)&broadcast, sizeof(broadcast)))
{
udpsend_sock_err(x, "couldn't switch to broadcast mode");
}
#endif /* SO_BROADCAST */
...and broadcast is just an int:
int broadcast = 1;/* nonzero is true */
I guess if something like that were to be added to the netsend_connect
function it would work.
Martin
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