升级指南：https://community.igniterealtime.org/docs/DOC-2703
详细改进记录：
Sub-task
[SMACK-399] - Add support for Roster Versioning (was XEP-0237, now in RFC 6121)
[SMACK-400] - Change xml-not-well-formed to not-well-formed
[SMACK-401] - Remove
[SMACK-445] - XMPPError class is based on deprecated XEP-0086
Bug
[SMACK-357] - Error in SASL authentication when SASL authzid parameter is null
[SMACK-410] - Any valid SSL server certificate can be used to perform a man-in-the-middle attack
[SMACK-411] - ServiceDiscoveryManager identities should be non-static and kept in a Set to allow multiple identities as per XEP-30
[SMACK-414] - Smack does not announce the support for XEP-54 aka vcard-temp
[SMACK-427] - Typo in code - StreamInitiation.setSesssionID()
[SMACK-467] - Don't use the default locale for machine-readable output, use Locale.US instead
[SMACK-531] - Add missing namespace attribute to XHTML-IM body tags
[SMACK-533] - Smack should prevent IQ response spoofing
[SMACK-535] - jul.properties should only configure the 'org.igniterealtime' namespace
[SMACK-538] - ParseRoster does not check the sender of the roster and for pending roster queries
[SMACK-541] - XHTMLExtensionProvider relies on incorrect behavior of MXParser, violating the contract of the XMLPullParser interface
[SMACK-543] - packet.Time is not thread-safe
[SMACK-546] - PubSub's Item needs to escape its XML payload
[SMACK-548] - PingManager notifies pingFailedListeners multiple times
[SMACK-551] - ChatManager throws NPE, when Message has no 'from' attribute
[SMACK-554] - Memory leak in BookmarkManager
[SMACK-555] - VCardProvider should consider some elements as optional
[SMACK-558] - connect() must wait until the stream features have been parsed
[SMACK-559] - Roster entries without a group are not updated
[SMACK-560] - Race condition in PacketWriter
[SMACK-567] - XMPPConnection leaks listenerExecutor ExecutorService
Improvement
[SMACK-343] - Make Smack jar an OSGi bundle.
[SMACK-356] - There is no way to reliably end a Chat and have a new one created.
[SMACK-454] - Follow XEP-0170 recommendation: Compression before Resource Binding
[SMACK-459] - Add option to configure the default identity in ServiceDiscoveryManager
[SMACK-465] - Replace custom wrapped Throwable in XMPPException with Exception.cause
[SMACK-468] - Don't throw an IOException in IBBStreams when the stream got closed by the remote
[SMACK-536] - JUL Loggers should become final
[SMACK-537] - Move XMPP Ping code to smackx, add keep-alive functionality to PingManager
[SMACK-545] - Change API to the style mentioned in Smack's Code Guidelines
[SMACK-547] - Consistent behavior for "from" attribute on outgoing stanzas
[SMACK-556] - Make ConnectionConfigration getters public
[SMACK-557] - Provide a MultiUserChat method to create *or* join a room
[SMACK-568] - Don't exclude groupchat messages without body element in MultiUserChat MessageListeners
New Feature
[SMACK-53] - Add support for XEP-0092: Software Version
[SMACK-71] - Create new FromFilter that checks for exact matching
[SMACK-187] - Add HTTP Binding support (BOSH / XEP-0124)
[SMACK-265] - Move to a newer build process with artifacts published to maven central repo
[SMACK-426] - Improve XMPPException
[SMACK-544] - Add support for XEP-0079: Advanced Message Processing
[SMACK-552] - Add support for "HTTP over XMPP transport" aka. XEP-0332
Task
[SMACK-371] - Some MUC tasks are using stanza's as defined in an older version of the spec. Fails to work on some servers.
[SMACK-432] - Code cleanup of deprecated methods
[SMACK-446] - Remove non-SASL authentication code
项目主页：http://www.igniterealtime.org/projects/smack/
下载地址：http://www.igniterealtime.org/downloads/index.jsp
来自:开源中国社区