It looks like https://github.com/wildfly/wildfly-core/commit/77158040d82d74af33800fce8813189e66471c5b may have introduced some soft or mismatch when trying to connect using SSL / TLS, the requested buffer size is quite large.

1:30:58,377 TRACE [org.xnio.nio.selector] (management Accept) Beginning select on sun.nio.ch.EPollSelectorImpl@2ab25536
11:30:58,377 TRACE [org.xnio.listener] (management I/O-1) Invoking listener org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial@aca44ee on channel org.xnio.conduits.ConduitStreamSourceChannel@787e0a1f

11:30:58,377 TRACE [org.jboss.remoting.remote.connection] (management I/O-1) Not enough buffered bytes for message of size 369296128+4 (java.nio.DirectByteBuffer[pos=0 lim=135 cap=8192])
^^^^^^^

11:30:58,377 TRACE [org.jboss.remoting.remote.connection] (management I/O-1) Compacted existing buffer java.nio.DirectByteBuffer[pos=135 lim=8192 cap=8192]
11:30:58,377 TRACE [org.jboss.remoting.remote.connection] (management I/O-1) Received EOF
11:30:58,377 TRACE [org.jboss.remoting.remote] (management I/O-1) Received connection end-of-stream
11:30:58,377 TRACE [org.xnio.nio.selector] (management I/O-1) Beginning select on sun.nio.ch.EPollSelectorImpl@1cc4241b

This was with native management, but I see the same thing using https. The client is jboss-cli.sh, connecting with:

./bin/jboss-cli.sh -c --controller=127.0.0.1:9999 --user=admin --password=password

Relevant bits of config in use:

<management>
<security-realms>
<security-realm name="sslSecurityRealm">
<server-identities>
<ssl>
<keystore path="/home/kwills/ssl/configuration/server.keystore" alias="server" keystore-password="asdasd"/>
</ssl>
</server-identities>
<authentication>
<properties path="/home/kwills/ssl/configuration/users.properties" plain-text="true"/>
</authentication>
</security-realm>
</security-realms>

<management-interfaces>
<native-interface security-realm="sslSecurityRealm">
<socket-binding native="native"/>
</native-interface>
</management-interfaces>
</management>

<socket-binding-group name="standard-sockets" default-interface="public" port-offset="${jboss.socket.binding.port-offset:0}">
<socket-binding name="management-http" interface="management" port="${jboss.management.http.port:9990}"/>
<socket-binding name="management-https" interface="management" port="${jboss.management.https.port:9993}"/>
<socket-binding name="native" interface="management" port="${jboss.management.https.port:9999}"/>
</socket-binding-group>