Smack-bosh not running

Exception in thread “main” org.jivesoftware.smack.SmackException$ConnectionException: java.lang.IllegalStateException: Could not load org.igniterealtime.jbosh.HTTPSender implementation

at org.jivesoftware.smack.bosh.XMPPBOSHConnection.connectInternal(XMPPBOSHConnecti on.java:175)

at org.jivesoftware.smack.AbstractXMPPConnection.connect(AbstractXMPPConnection.ja va:360)

at Test1.main(Test1.java:102)

Caused by: java.lang.IllegalStateException: Could not load org.igniterealtime.jbosh.HTTPSender implementation

at org.igniterealtime.jbosh.ServiceLib.loadService(ServiceLib.java:83)

at org.igniterealtime.jbosh.BOSHClient.(BOSHClient.java:235)

at org.igniterealtime.jbosh.BOSHClient.create(BOSHClient.java:368)

at org.jivesoftware.smack.bosh.XMPPBOSHConnection.connectInternal(XMPPBOSHConnecti on.java:151)

… 2 more

anyone faced this isse