http://www.jboss.org/undertow-parent/undertow-core: Undertow (JBoss by Red Hat) 
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package io.undertow.server.handlers.sse;


Callback handler that is invoked when a client connects to a SSE endpoint

Author:Stuart Douglas
/**
 * Callback handler that is invoked when a client connects to a SSE endpoint
 *
 * @author Stuart Douglas
 */
public interface ServerSentEventConnectionCallback {

    void connected(ServerSentEventConnection connection, String lastEventId);

}