SAP announcements not being received

[steenbras]

I'm streaming multicast over the LAN from an Ubuntu Intrepid machine. I've tried using the packaged version 0.9.4, and also a .deb of version 0.9.8a which I found here. I can see the SAP announcement in a vlc client running on another machine running Intrepid, but all Mac and Win clients can't see the announcement at all.

It seems that they try to connect to an IPv6 address when enabling the SAP module, judging by the messages. I tried enabling IPv6 support in an XP machine by running "ipv6 install". This time it resolves the IPv6 address, but still receives no announcements.

Here's the output from a Mac client:

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main debug: net: opening ff02::2:7ffe%fw0 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff02::2:7ffe%en1 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff01::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff04::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff05::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff06::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff07::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff08::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff09::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0A::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0B::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0C::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0D::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0E::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: rebuilding array of current - root Playlist main debug: rebuild done - 0 items, index -1 main debug: no fetch required for Playlist (art currently (null)) main debug: no fetch required for SAP (art currently (null)) main debug: no fetch required for Playlist (art currently (null)) main debug: no fetch required for Playlist (art currently (null)) main debug: no fetch required for Playlist (art currently (null)) main debug: no fetch required for Playlist (art currently (null)) macosx debug: text input from user requested macosx debug: dialog cancelled macosx debug: hide event 0x148a3710 main debug: waitpipe: object killed main debug: thread ended main debug: thread 2958790656 joined (playlist/services_discovery.c:141) main debug: removing module "sap" main warning: Can't detach to an object event manager event main warning: Can't detach to an object event manager event main warning: Can't detach to an object event manager event main warning: Can't detach to an object event manager event main warning: Can't detach to an object event manager event main warning: Can't detach to an object event manager event main debug: no fetch required for Playlist (art currently (null)) main debug: no fetch required for Playlist (art currently (null)) main debug: Add services_discovery sap main debug: looking for services_discovery module: 1 candidate main debug: using services_discovery module "sap" main debug: TIMER module_Need() : 0.692 ms - Total 0.692 ms / 1 intvls (Avg 0.692 ms) main debug: rebuilding array of current - root Playlist main debug: rebuild done - 0 items, index -1 main debug: thread 2958790656 (services_discovery) created at priority 0 (playlist/services_discovery.c:114) main debug: thread started main debug: net: opening 224.2.127.254 datagram port 9875 main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening 239.195.255.255 datagram port 9875 main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening 239.255.255.255 datagram port 9875 main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening 224.0.0.255 datagram port 9875 main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening ff02::2:7ffe%lo0 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: no fetch required for Playlist (art currently (null)) main debug: net: opening ff02::2:7ffe%gif0 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff02::2:7ffe%stf0 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff02::2:7ffe%en0 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff02::2:7ffe%fw0 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff02::2:7ffe%en1 datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff01::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff04::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff05::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff06::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff07::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff08::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff09::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0A::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0B::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0C::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0D::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: net: opening ff0E::2:7ffe datagram port 9875 main debug: IPV6_JOIN_GROUP multicast request main error: cannot join IPv6 any-source multicast group (Can't assign requested address) main error: Multicast group join error (Can't assign requested address) main error: Multicast not supported main debug: no fetch required for Playlist (art currently (null)) main debug: no fetch required for SAP (art currently (null)) macosx debug: preparsing nodes not implemented main debug: no fetch required for SAP (art currently (null)) main debug: opening config file (/Users/bradleywells/Library/Preferences/VLC/vlcrc) main debug: opening config file (/Users/bradleywells/Library/Preferences/VLC/vlcrc)

On the XP machine, still unable to receive SAP announcements, here's the output

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main debug: Add services_discovery sap main debug: looking for services_discovery module: 1 candidate main debug: using services_discovery module "sap" main debug: TIMER module_Need() : 44.096 ms - Total 44.096 ms / 1 intvls (Avg 44.096 ms) main debug: rebuilding array of current - root Playlist main debug: rebuild done - 0 items, index -1 main debug: thread 5168 (services_discovery) created at priority 0 (playlist/services_discovery.c:114) main debug: thread started main debug: net: opening 224.2.127.254 datagram port 9875 main debug: Multicast group join request main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening 239.195.255.255 datagram port 9875 main debug: Multicast group join request main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening 239.255.255.255 datagram port 9875 main debug: Multicast group join request main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening 224.0.0.255 datagram port 9875 main debug: Multicast group join request main debug: IP_ADD_MEMBERSHIP multicast request main debug: net: opening ff01::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff04::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff05::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff06::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff07::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff08::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff09::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff0A::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff0B::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff0C::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff0D::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request main debug: net: opening ff0E::2:7ffe datagram port 9875 main debug: Multicast group join request main debug: IPV6_JOIN_GROUP multicast request

I think the Ipv6 issue is possibly barking up the wrong tree. What other areas should I be looking at to resolve this?

[Rémi Denis-Courmont]

Make sure the OSX and Windows receiver are up-to-date and unfirewalled. Check with wireshark if you see the stream. Also check if there is not some IGMP version conflict.

[steenbras]

Thanks, Rémi. I hadn't correctly installed 0.9.8a from the site linked above - I was actually still running 0.9.4. Fully removing the old version and then installing 0.9.8a from that site (first needed the NOX package) solved the problem on the streaming server.

For others running up against this issue - the packaged version 0.9.4 in Intrepid Ibex does NOT announce correctly. Use the link above to install the later version and you will be ok. Hopefully 0.9.8a will make it into the main repos soon.

As a side note - another issue which obscured the issue for me is that I was running an XP client on a VM on my Ubuntu system. I still can't receive SAP announcements there, but I'm not too fussed about that. I presume that's a routing issue with the SAP messages not getting off the subnet (main machine 192.168.x.x, VM 10.0.x.x)

All working now though!