<div>
Hi Peter,
</div><div><br></div><div>Multicast works absolutely fine on OSX. Here is how multicast is enabled:</div><div><a href="https://github.com/gossiperl/gossiperl/wiki/multicast-overlays#setting-up-multicast-on-os-x">https://github.com/gossiperl/gossiperl/wiki/multicast-overlays#setting-up-multicast-on-os-x</a></div>
<div><div><br></div><div>And then using the multicast options:</div><div><a href="https://github.com/gossiperl/gossiperl/blob/master/include/gossiperl.hrl#L107">https://github.com/gossiperl/gossiperl/blob/master/include/gossiperl.hrl#L107</a></div><div><br></div><div>Works perfect on Linux, OSX and RPi.</div>
<p style="font-family: Helvetica; font-size: 10pt; margin-bottom: 0cm;">
</p><p style="font-family: Helvetica; font-size: 10pt; margin-bottom: 0cm;">
</p><p style="margin-bottom: 0cm;">
</p><p style="margin-bottom: 0cm"><font color="#000000"><font face="Helvetica, sans-serif"><font style="font-size: 9pt">Best regards,
<br>Radek
Gruchalski<br>
</font></font></font><font face="Helvetica, sans-serif"><font style="font-size: 9pt"><a href="mailto:radek@gruchalski.com">radek@gruchalski.com</a><a href="mailto:radek@gruchalski.com">
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communication is intended for the above-named person and may be
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<p style="color: #A0A0A8;">On Thursday, 7 April 2016 at 16:14, Peter Morgan wrote:</p>
<blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px;">
<span><div><div><div>Hello -</div><div><br></div><div>I’m having some trouble getting UDP multicast working on OSX, whereas the same code on Linux works fine.</div><div><br></div><div>On linux (fedora 23):</div><div><br></div><div>[pmorgan@dev001 ~]$ erl</div><div>Erlang/OTP 18 [erts-7.3] [source] [64-bit] [async-threads:10] [hipe] [kernel-poll:false]</div><div><br></div><div>Eshell V7.3 (abort with ^G)</div><div>1> Address = {224, 0, 0, 251}.</div><div>{224,0,0,251}</div><div>2> Port = 5353.</div><div>5353</div><div>3> {ok, Socket} = gen_udp:open(Port, [binary, {ip, Address}, {add_membership, {Address, {0,0,0,0}}}, {reuseaddr, true}]).</div><div>{ok,#Port<0.543>}</div><div>4> gen_udp:send(Socket, Address, Port, <<"hello world">>).</div><div>ok</div><div><br></div><div><br></div><div>Whereas on OSX:</div><div><br></div><div>Office-iMac:mdns pmorgan$ sw_vers </div><div>ProductName: Mac OS X</div><div>ProductVersion: 10.11.4</div><div>BuildVersion: 15E61b</div><div><br></div><div>Office-iMac:mdns pmorgan$ erl</div><div>Erlang/OTP 18 [erts-7.3] [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]</div><div><br></div><div>Eshell V7.3 (abort with ^G)</div><div>1> Address = {224, 0, 0, 251}.</div><div>{224,0,0,251}</div><div>2> Port = 5353.</div><div>5353</div><div>3> {ok, Socket} = gen_udp:open(Port, [binary, {ip, Address}, {add_membership, {Address, {0,0,0,0}}}, {reuseaddr, true}]).</div><div>{ok,#Port<0.553>}</div><div>4> gen_udp:send(Socket, Address, Port, <<"hello world">>).</div><div>{error,eaddrnotavail}</div><div><br></div><div><br></div><div>I’ve tried various other options in gen_udp:open/2, but not found a combination that works for OSX. Any ideas please? The above is a simplified test case of <a href="https://github.com/shortishly/mdns/blob/master/src/mdns_udp.erl#L41-L49">https://github.com/shortishly/mdns/blob/master/src/mdns_udp.erl#L41-L49</a></div><div><br></div><div>Thanks,</div><div>Peter.</div><div><br></div><div><br></div><div><br></div><div>_______________________________________________</div><div>erlang-questions mailing list</div><div><a href="mailto:erlang-questions@erlang.org">erlang-questions@erlang.org</a></div><div><a href="http://erlang.org/mailman/listinfo/erlang-questions">http://erlang.org/mailman/listinfo/erlang-questions</a></div></div></div></span>
</blockquote>
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