EJB over HTTP fails with "Invalid application_layer_protocol_negotiation extension" when SSL is enabled

Solution Verified - Updated -

Issue

We have a 2 nodes clustered JBoss EAP with mod_cluster setup and a java client application invokes EJB over HTTP using the mod_cluster virtual host. Invocation fails with the following error:

Fatal (UNEXPECTED_MESSAGE): Invalid application_layer_protocol_negotiation extension: Only client specified application protocol is allowed in ServerHello message (
"throwable" : {
  javax.net.ssl.SSLProtocolException: Invalid application_layer_protocol_negotiation extension: Only client specified application protocol is allowed in ServerHello message

Environment

  • Red Hat JBoss Enterprise Application Platform (JBoss EAP)
    • 7.4.12
  • OpenJDK
    • 11.0.19
  • Red Hat JBoss Core Services (JBCS)
    • 2.4.x

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