diff -r 034f2a0b3915 -r 0b75337bb91a src/luan/host/WebHandler.java
--- a/src/luan/host/WebHandler.java	Wed Apr 04 14:54:29 2018 -0600
+++ b/src/luan/host/WebHandler.java	Thu Apr 05 16:38:33 2018 -0600
@@ -33,16 +33,20 @@
 
 	private static class LuanRef {
 		private final LuanState luan;
+		private final Handler handler;
+		private final LuanHandler luanHandler;
 
-		private LuanRef(LuanState luan) {
+		private LuanRef(LuanState luan,Handler handler,LuanHandler luanHandler) {
 			this.luan = luan;
+			this.handler = handler;
+			this.luanHandler = luanHandler;
 		}
 	}
 
 	private static final ReferenceQueue<LuanRef> queue = new ReferenceQueue<LuanRef>();
 
 	private static class MyReference extends SoftReference<LuanRef> {
-		private final LuanState luan;
+		private LuanState luan;
 
 		private MyReference(LuanRef lr) {
 			super(lr,queue);
@@ -57,6 +61,7 @@
 				return;
 			logger.info("sweep");
 			ref.luan.close();
+			ref.luan = null;
 		}
 	}
 
@@ -65,9 +70,6 @@
 	private static final Map<String,MyReference> siteMap = new HashMap<String,MyReference>();
 	private static String sitesDir = null;
 
-	private static final String HANDLER = "WebHandler.handler";
-	private static final String LUAN_HANDLER = "WebHandler.luanHandler";
-
 	public static boolean isServing() {
 		return sitesDir != null;
 	}
@@ -88,23 +90,17 @@
 		LuanRef lr = getSite(domain);
 		if( lr == null )
 			return null;
-		LuanState luan = lr.luan;
-		Handler handler = (Handler)luan.registry().get(HANDLER);
-		return handler.handle(request);
+		return lr.handler.handle(request);
 	}
 
 	public static Object runLuan(String domain,String sourceText,String sourceName) throws LuanException {
 		LuanRef lr = getSite(domain);
-		LuanState luan = lr.luan;
-		LuanHandler luanHandler = (LuanHandler)luan.registry().get(LUAN_HANDLER);
-		return luanHandler.runLuan(sourceText,sourceName);
+		return lr.luanHandler.runLuan(sourceText,sourceName);
 	}
 
 	public static Object callSite(String domain,String fnName,Object... args) throws LuanException {
 		LuanRef lr = getSite(domain);
-		LuanState luan = lr.luan;
-		LuanHandler luanHandler = (LuanHandler)luan.registry().get(LUAN_HANDLER);
-		return luanHandler.call_rpc(fnName,args);
+		return lr.luanHandler.call_rpc(fnName,args);
 	}
 
 	private static LuanRef getSite(String domain) {
@@ -119,8 +115,7 @@
 				if( !dir.exists() /* && !recover(dir) */ )
 					return null;
 				sweep();
-				LuanState luan = newSite(dir.toString(),domain);
-				lr = new LuanRef(luan);
+				lr = newSite(dir.toString(),domain);
 				siteMap.put(domain,new MyReference(lr));
 			}
 			return lr;
@@ -165,7 +160,7 @@
 		return init;
 	}
 
-	private static LuanState newSite(String dir,String domain) {
+	private static LuanRef newSite(String dir,String domain) {
 		LuanState luan = new LuanState();
 		LuanTable init = initLuan(luan,dir,domain);
 
@@ -180,10 +175,7 @@
 		String logDir = dir + "/site/private/local/logs/web";
 		new File(logDir).mkdirs();
 
-		luan.registry().put(HANDLER,handler);
-		luan.registry().put(LUAN_HANDLER,luanHandler);
-
-		return luan;
+		return new LuanRef(luan,handler,luanHandler);
 	}
 
 	public static void removeHandler(String domain) throws Exception {
@@ -191,9 +183,7 @@
 			Reference<LuanRef> ref = siteMap.remove(domain);
 			LuanRef lr = ref==null ? null : ref.get();
 			if( lr != null ) {
-				LuanState luan = lr.luan;
-				LuanHandler luanHandler = (LuanHandler)luan.registry().get(LUAN_HANDLER);
-				luanHandler.close();
+				lr.luan.close();
 			}
 		}
 	}

diff -r 034f2a0b3915 -r 0b75337bb91a src/luan/modules/http/LuanHandler.java
--- a/src/luan/modules/http/LuanHandler.java	Wed Apr 04 14:54:29 2018 -0600
+++ b/src/luan/modules/http/LuanHandler.java	Thu Apr 05 16:38:33 2018 -0600
@@ -1,5 +1,6 @@
 package luan.modules.http;
 
+import java.io.Closeable;
 import java.io.Writer;
 import java.io.PrintWriter;
 import java.io.IOException;
@@ -25,7 +26,7 @@
 import luan.modules.PackageLuan;
 
 
-public class LuanHandler implements Handler {
+public class LuanHandler implements Handler, Closeable {
 	private final LuanState luanInit;
 	private final Logger logger;
 	private final ReadWriteLock lock = new ReentrantReadWriteLock();
@@ -40,8 +41,8 @@
 		}
 	}
 
-	public LuanHandler(LuanState luan,String loggerRoot) {
-		this.luanInit = luan;
+	public LuanHandler(LuanState luanInit,String loggerRoot) {
+		this.luanInit = luanInit;
 		if( loggerRoot==null )
 			loggerRoot = "";
 		logger = LoggerFactory.getLogger(loggerRoot+LuanHandler.class.getName());
@@ -52,6 +53,7 @@
 			throw new RuntimeException(e);
 		}
 		setLuan();
+		luanInit.onClose(this);
 	}
 
 	private void setLuan() {
@@ -92,7 +94,7 @@
 		}
 	}
 
-	public void close() throws IOException {
+	public void close() {
 		synchronized(luan) {
 			luan.close();
 		}