Standalone EJB client fails to connect javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? in JBoss EAP 6

Solution Verified - Updated

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 6.1.x
    • 6.0.x

Issue

  • Our standalone EJB client is failing to invoke an ejb with the following exception: 
23:00:32,886 ERROR [org.jboss.remoting.remote.connection] JBREM000200: Remote connection failed: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
23:00:32,899 WARN  [org.jboss.ejb.client.remoting.ConfigBasedEJBClientContextSelector] Could not register a EJB receiver for connection to localhost:4447: java.lang.RuntimeException: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
	at org.jboss.ejb.client.remoting.IoFutureHelper.get(IoFutureHelper.java:91) [jboss-ejb-client-1.0.23.Final-redhat-1.jar:1.0.23.Final-redhat-1]
	at org.jboss.ejb.client.remoting.ConnectionPool.getConnection(ConnectionPool.java:77) [jboss-ejb-client-1.0.23.Final-redhat-1.jar:1.0.23.Final-redhat-1]
        ...
Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
        ...

Resolution

Set the SSL_ENABLED property to false in your EJB client configuration (jboss-ejb-client.properties, EJBClientConfiguration, or EAP 6.1 ejb-client InitialContext properties)

remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED=false

Note: if the application is running in side of JBoss EAP , make sure the application declares a dependency on the org.jboss.xnio module as described in This content is not included.Invalid option 'org.xnio.Options.SSL_ENABLED' in property in client application running in JBoss EAP 6

Root Cause

The client is trying to connect with SSL enabled where as the server is expecting SSL to be disabled

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