python broadcast socket

Jp Calderone exarkun at divmod.com
Thu Jun 30 00:21:37 CEST 2005


On Thu, 30 Jun 2005 00:13:45 +0200, Irmen de Jong <irmen.nospam at xs4all.nl> wrote:
>Grant Edwards wrote:
>
>> Under Linux, you need to be root to send a broadcase packet.
>
>I don't think this is true.
>

I think you're right.  I believe you just need to set the broadcast SOL_SOCKET option.

>>> import socket
>>> s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
>>> s.sendto('asdljk', ('255.255.255.255', 12345))
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
socket.error: (13, 'Permission denied')
>>> s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
>>> s.sendto('asdljk', ('255.255.255.255', 12345))
6
>>> 

Yep, looks like it.

Jp



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