Messages in this thread | | | Date | Wed, 14 Jun 2006 15:57:01 -0700 (PDT) | From | Jason <> | Subject | Re: SO_REUSEPORT and multicasting |
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--- David Miller <davem@davemloft.net> wrote: > Instead of degenerating this mailing list into a BSD > socket > programming class, you may find this informative: > > > http://www.unixguide.net/network/socketfaq/4.11.shtml > > and it's covered extensively in W. Richard Steven's > book, TCP/IP > Illustrated, Volume 2. It is considered the bible > on BSD socket > programming. > > Particularly telling is the final paragraph from > that web page which > reads: > > Basically SO_REUSEPORT is a BSD'ism that arose when > multicast was added, evne though it was not used in > the > original Steve Deering code. I believe some > BSD-derived > systems may also include it. SO_REUSEPORT lets you > bind > the same address *and* port, but only if all the > binders > have specified it. But when binding to multicast > address > (its main use), SO_REUSEADDR is considered > identical to > SO_REUSEPORT (p. 731, "TCP/IP Illustrated, Volume > 2"). > So for portability of multicast applications, I > always > use SO_REUSEADDR. > > I STRONGLY suggest you go read that reference to > page 731 in > the Steven book.
I agree that I don't want to start a flamewar or get off topic. However, I did state earlier that I did switch to use SO_REUSEADDR and while the program compiled on Linux (without error) the server did not receive any packets. Hence my questions regarding Linux supporting multicasting.
Thanks,
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