Update Smack dependency to align with Spring Integration

[wilkinsona]

This change will need to be updated if #18 is merged, but I wanted to open a PR so that I don't forget about it

[garyrussell]

@wilkinsona Please also note we have an open PR to update to smack 4.0 when it is released.

We haven't decided whether this will go in a point release or wait for 4.1 (but the submitter is complaining that SI is using a "very old" smack).

[wilkinsona]

Thanks, Gary.

It's interesting that 3.2.1 is described as "very old": it's the most recent release that's published to Maven Central so it's the latest and greatest as far as I'm concerned.

[artembilan]

Guys, @Flowdalic is the Smack commiter and I'm sure he can answer for all our questions.
Anyway the latest version is 3.4.1: https://igniterealtime.org/downloads/index.jsp

[wilkinsona]

Unfortunately, 3.4.1 is of no use to us as it's not published to Maven Central

@Flowdalic, what are you plans for the release of 4.0.0? We're looking to wrap up a number of releases in the next week or so. Is there any chance of 4.0.0 being final in that timeframe?

[Flowdalic]

While preparing the commit to update Smack in spring-integration (INT-3383) I discovered that Smack is also used in spring-ws. And since there seems to be a dependency between spring-ws and spring-integration, both projects must always have a compatible API version of Smack. I've prepared a commit updating spring-ws to Smack 4 at https://github.com/flowdalic/spring-ws/tree/smack4, but decided to not send a pull request until Smack 4.0.0-rc2 is released.

The only thing that's blocking a 4.0.0-rc2 release are some OSGi issues regarding Smack. If everything goes well, I'd expect those to be fixed in the next few days and the release by the end of the week. It's up to you to decide if you would go with a -rc2. My impression is that it's pretty stable, although a lot has of code has changed, but we got no complaints from Smack 4 testers (besides the OSGi issues).

[wilkinsona]

I'd like to keep this PR for aligning Spring WS with Spring Integration's current Smack dependency, i.e. 3.2.1. We can consider an upgrade to 4.0.0 as a separate piece of work as and when it has been released.

[artembilan]

Sounds goos. So, let's merge!

[poutsma]

Merged. Thanks!