Smack - IPv6 support

Smack Smack Dev
1

Hello,

I wonder if it is possible to use Smack with an IPv6 stack?

Did anyone test Smack upon IPv6?

Best regards.

2

I haven’'t tested myself, but Smack should work with IPv6 just fine since all newer versions of Java support IPv6.

Regards,

Matt

3

I did test that last summer (northern hemissphere), it works fine, but you have to tell Java to prefer IPv6 over IPv4 if you want to connect to a server that offers both.

4

Smack works fine with IPv6. Both the 2.* versions and the 3 beta version. I’‘ve only tried it with OpenFire (wildfire). Not sure what other XMPP servers support IPv6. I’'m also not sure how the new Jingle stuff behaves on dual-stack systems. Plan on testing it soon.

You can enable “proper” dual-stack behavior as follows:

// Enable rfc3484 compliant behavior (prefer IPv6 over IPv4 on dual stack systems

System.setProperty(“java.net.preferIPv6Addresses”,“true”);

System.setProperty(“java.net.preferIPv4Stack”,“true”);