Discovery is broken in Ruby 2.1

[fliiiix]

Timeout error; switching to the default IP

I got always this error, and I don't understand why.

[soffes]

Working on a fix.

[soffes]

For me, this works fine with Ruby 2.0. In 2.1, it always times out. Not sure why.

@jasperla I tried your patch but it didn't work for me. I'm on Mac OS X running Ruby 2.1-p0.

[jasperla]

I don't need that patch on Mac OS X with ruby 2.0. It was committed to OpenBSD as the setsockopt(2) flag needs to be an unsigned char instead of an int. It was a shot in the dark with regard to the issue you're seeing.

[soffes]

Oh ha. Well now that I know it's a 2.1 issue, it should be easier to track down. Switched to 2.0 to go through some of these issues for now.

[jasperla]

With 2.1 I think the way to set the socket options changed, i.e. the MULTICAST_TTL.
So you'd have to use the Socket::Option.ipv4_multicast_ttl method for portable behavior,

[soffes]

Tried

@socket.setsockopt Socket::Option.ipv4_multicast_ttl(2)

with no luck

[fliiiix]

Hey I try to run the latest version with rake console on different ruby versions with no luck.
My OS is Fedora 20 with 3.12.7-300.fc20.x86_64 kernel. If you need some additional information's just ask.

1.9.3-p484 :001 > system = Sonos::System.new
Timed out...
 => #<Sonos::System:0x0000000212f208 @topology=[], @groups=[], @devices=[]> 

2.0.0-p353 :001 > system = Sonos::System.new
Timed out...
 => #<Sonos::System:0x00000002f49230 @topology=[], @groups=[], @devices=[]> 

2.1.0 :001 > system = Sonos::System.new
Timed out...
 => #<Sonos::System:0x000000013926b8 @topology=[], @groups=[], @devices=[]> 

Good luck with fixing 👍

[soffes]

Thanks @fliiiix! So frustrating. For me 2.0.0-p353 works just fine.

[fliiiix]

I debug it with wireshark, it's really a ugly piece of software.
Turns out I got an ICMP package Type 3 Code 10 which mean Destination Unreachable - Host administratively prohibited.

This sounds like firewall right? I disable my firewall. And now it work for me with:

• 2.0.0-p353
• 2.1.0
• 2.1.0-preview2

So now I try to figure out how I need to configure my firewall to allow these traffic.
But these don't explain why for you 2.0 work and 2.1 not. 😕

[dspeake]

I have the same issue whilst running an app within a docker container (using dokku) so my guess is that it is a routing issue. I've disabled ufw, and I can ping the Sonos box from within the container, but it still doesn't discover. My guess is because the container runs in a different/virtual network.

I've just changed my method to:

system = Sonos::System.new(Sonos::Discovery.new(2, ip).topology)

[michalzielanski]

For me, this works fine with Ruby 2.1 (2.1.0p0 (2013-12-25 revision 44422) from MacPorts). Mac OS X 10.9.1, Sonos 0.3.5 from Ruby Gems.

[gotwalt]

ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-darwin13.0] (current 2.1.2 head from rbenv) works fine out of the box. Suspect this was a regression fixed some time between the opening of this ticket and now.

[jasperla]

ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-openbsd] works fine for me still with sonos-0.3.6, so I'm inclined to close this issue.

@soffes ?