Smack 4.1.1 发布，此版本主要修复了一下 Bug：
DIGEST-MD5 challenge/response parsing must handle linear white spaces after the comma
SynchronizationPoint should use signalAll
Integer overflow if both client and server don't specify a max resumption time
isSmResumptionPossible() returns wrong values
DeliveryReceipts auto add should use packet interceptors and should not be requested for messages with ACKs.
Memory leak caused by RosterEntry declaring a strong reference to XMPPConnection
ReconnectionManager's RANDOM_INCREASING_DELAY is erroneously using a fixed value.
Add method to set ProxyInfo in ConnectionConfiguration.Builder
RosterEntry.setName() does not change the name
Smack是一个开源，易于使用的XMPP（jabber）的 Java 客户端类库。
软件详情：http://www.igniterealtime.org/builds/smack/docs/latest/changelog.html
下载地址：http://www.igniterealtime.org/downloads/source.jsp
来自:开源中国社区
