[Boost-users] asio multicast cross-platform issues

Subject: [Boost-users] asio multicast cross-platform issues
From: Birju Prajapati (Birju.Prajapati_at_[hidden])
Date: 2009-01-26 06:25:12

Hi,
On WinXP, I successfully implemented an application that listens to
multiple multicast groups (different IPs same port). When I recompiled
that app on Linux, on another box, I started getting duplicate
datagrams. After messing around for a long while, I got it working.
I had to change two things:
socket.bind was changed so that it no longer was given 'any' and the
port, but the multicast address and port.
socket.set_option was changed so that it no longer was given only the
multicast address, but both the multicast address and local address.
Moving this code back to Windows stops it working!
I then stumbled across this while researching my issue:

http://osdir.com/ml/lib.boost.asio.user/2007-04/msg00135.html

I could not find this information anywhere in the documentation. Could
someone point me in the right place?
Does it also mean that the statement
"Boost.Asio is a cross-platform C++ library for network and low-level
I/O programming that provides developers with a consistent asynchronous
model using a modern C++ approach."
In the docs is inaccurate for multicast? If not, is there a
cross-platform, asio way?

Cheers,
Birju
 

 
Schneider Trading
4th Floor,
25 Copthall Avenue
London EC2R 7BP

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