Both the AS 5.1 and 6.0 implementations of JbossRemoteContainer have:

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer

Recommend an external dependency on a safe alternative like apache-httpcomponent's HttpClient or Jetty, ie:

http://anonsvn.jboss.org/repos/jbossas/projects/ejb-book/trunk/ch07-rsscache/src/test/java/org/jboss/ejb3/examples/ch07/rsscache/RssCacheTestCaseBase.java