[erlang-questions] windows multicast

["Jörg Maushake"]

Thank You for this detailled reply.
 Does your windows code work on two nodes started on one machine?
 On my machine im still getting eaddrinuse when trying to run the code in two nodes.
 I did the following, to verify the code used for windows:
  
  Mc = {230, 0, 0, 1},
  Src = {192,168,2,101},
  %% 1> inet:getiflist().
  %% {ok,["169.254.82.58","192.168.2.101","127.0.0.1"]} 
  %% 2>
  Opts = [ { active, true },
           { ip, Src },
           { multicast_loop, true },
           { reuseaddr, true },
           list 
         ],
  { ok, RecvSocket } = gen_udp:open (Port, Opts),
  inet:setopts(RecvSocket, [{ add_membership, { Mc, Src }}]),

  And it works when starting a node. But when starting another node (on the same maching) im still getting
  Address in use:
  
 !! eaddrinuse 
 
  im using R16B03-1
  

> Gesendet: Sonntag, 11. Mai 2014 um 07:55 Uhr
> Von: "Sergej Jurecko" <sergej.jurecko@REDACTED>
> An: "Jörg Maushake" <joerg.maushake@REDACTED>
> Cc: "Gokhan Boranalp" <kunthar@REDACTED>, Erlang <erlang-questions@REDACTED>
> Betreff: Re: [erlang-questions] windows multicast
>
> Multicast in erlang is kind of weird. 
> I actually have slightly different code for different platforms. This is code from r14 days. I’m not sure if it works any differently now, but I did have issues finding the right combination of parameters to get it to work. Nothing worked universally across all platforms. 
> 
> Mc = multicast address
> Src = source ip of local interface
> 
> Windows:
> {ok, SockSrc} = gen_udp:open(Port, [{reuseaddr,true}, {ip, Src}, {multicast_ttl, 1}, {multicast_loop, false}, binary]),
> inet:setopts(SockSrc, [{add_membership, {Mc, Src}}]);
> 
> linux,freebsd:
> 
> {ok, SockSrc} = gen_udp:open(Port, [{reuseaddr,true}, {ip, {0,0,0,0}}, {add_membership, {Mc, Src}},{active,true}, binary,{recbuf, 1024*1024}]);
> 
> osx:
> 
> {ok, SockSrc} = gen_udp:open(Port, [{reuseaddr,true}, {ip, Mc}, {multicast_ttl, 1}, {multicast_loop, false},{recbuf, 1024*1024}, binary]),
> inet:setopts(SockSrc, [{add_membership, {Mc, {0,0,0,0}}}])
> 
> 
> Sergej
> 
> On 10 May 2014, at 21:37, Jörg Maushake <joerg.maushake@REDACTED> wrote:
> 
> >   Restarting windows does not change anything.
> >   I deployed the code to macbook where it works.
> >   It seems to be a windows issue
> >   otp_release: R16B03-1
> >  
> > Gesendet: Samstag, 10. Mai 2014 um 17:18 Uhr
> > Von: "Gokhan Boranalp" <kunthar@REDACTED>
> > An: "Jörg Maushake" <joerg.maushake@REDACTED>
> > Cc: Erlang <erlang-questions@REDACTED>
> > Betreff: Re: [erlang-questions] windows multicast
> > Restart your computer.
> > 
> > On Sat, May 10, 2014 at 5:58 PM, "Jörg Maushake" <joerg.maushake@REDACTED> wrote:
> > > Hi list,
> > > I am using erlang on windows 7.
> > >
> > > When i start a multicast (the code is from nodefinder) like so:
> > > Opts = [ { active, true },
> > > { ip, {230, 0, 0, 1} },
> > > { add_membership, { {230, 0, 0, 1}, { 0, 0, 0, 0 } } },
> > > { multicast_loop, true },
> > > { reuseaddr, true },
> > > list
> > > ],
> > > { ok, RecvSocket } = gen_udp:open (4321, Opts),
> > >
> > > i get this {error,eaddrnotavail}
> > >
> > > Removing the tuple { ip, {230, 0, 0, 1} } from Opts seems to work!
> > > But when i then start another node on the same machine the error i get is:
> > > {error,eaddrinuse}
> > >
> > > (The multicast group and port works with java )
> > >
> > > Any suggestions ?
> > >
> > > _______________________________________________
> > > erlang-questions mailing list
> > > erlang-questions@REDACTED
> > > http://erlang.org/mailman/listinfo/erlang-questions
> > >
> > 
> > 
> > 
> > --
> > BR,
> > \|/ Kunthar
> > _______________________________________________
> > erlang-questions mailing list
> > erlang-questions@REDACTED
> > http://erlang.org/mailman/listinfo/erlang-questions
> 
>