Artemis AMQP protocol requires proton-j...jar if SASL is used ------------------------------------------------------------- Key: WFLY-11289 URL: https://issues.jboss.org/browse/WFLY-11289 Project: WildFly Issue Type: Bug Components: JMS Affects Versions: 14.0.0.Final Reporter: Miroslav Novak Assignee: ehsavoie Hugonnet Priority: Major If AMQP client uses SASL authentication then connection fails with: {code} 2018-11-05 12:08:01,636 TRACE [org.jboss.modules] (Thread-1 (activemq-netty-threads)) Class org.apache.qpid.proton.engine.SaslListener not found from Module "org.apache.activemq.artemis.protocol.amqp" from local module loader @79b4d0f (finder: local module finder @6b2fad11 (roots: /apps/wildfly14.0/modules,/apps/wildfly14.0/modules/system/layers/base)) 2018-11-05 12:08:01,636 WARN [org.jboss.modules.define] (Thread-1 (activemq-netty-threads)) Failed to define class org.apache.activemq.artemis.protocol.amqp.proton.handler.ProtonHandler in Module "org.apache.activemq.artemis.protocol.amqp" from local module loader @79b4d0f (finder: local module finder @6b2fad11 (roots: /apps/wildfly14.0/modules,/apps/wildfly14.0/modules/system/layers/base)): java.lang.NoClassDefFoundError: Failed to link org/apache/activemq/artemis/protocol/amqp/proton/handler/ProtonHandler (Module "org.apache.activemq.artemis.protocol.amqp" from local module loader @79b4d0f (finder: local module finder @6b2fad11 (roots: /apps/wildfly14.0/modules,/apps/wildfly14.0/modules/system/layers/base))): org/apache/qpid/proton/engine/SaslListener {code} It requires proton-j-0.27.3.jar to be added to org.apache.activemq.artemis.protocol.amqp module. It appears to missing and should be added. See: https://developer.jboss.org/message/986253 for more information. Credit for finding this problem goes to [~ninjasftw]