--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/classes/sun/net/www/protocol/http/Handler.java	Fri Jan 23 10:14:01 2015 -0800
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2014, United States Government, as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All rights reserved.
+ *
+ * The Java Pathfinder core (jpf-core) platform is licensed under the
+ * Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0. 
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and 
+ * limitations under the License.
+ */
+package sun.net.www.protocol.http;
+
+import gov.nasa.jpf.CachedROHttpConnection;
+
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.net.Proxy;
+import java.net.URL;
+
+/**
+ * replaced handler to support configured URLConnection classes
+ */
+public class Handler extends java.net.URLStreamHandler {
+
+  protected String proxy;
+  protected int proxyPort;
+
+  public Handler() {
+    proxy = null;
+    proxyPort = -1;
+  }
+
+  public Handler(String proxy, int port) {
+    this.proxy = proxy;
+    this.proxyPort = port;
+  }
+
+  @Override
+  protected int getDefaultPort() {
+    return 80;
+  }
+
+
+  static Class<?>[] argTypes = { URL.class, Proxy.class };
+  private native Class<? extends java.net.URLConnection> getConnectionClass(String url);
+
+  
+  @Override
+  protected java.net.URLConnection openConnection (URL u, Proxy p) throws IOException {
+
+    Class<? extends java.net.URLConnection> clazz = getConnectionClass(u.toString());
+
+    if (clazz != null){
+      try {
+        Constructor<? extends java.net.URLConnection> ctor = clazz.getConstructor(argTypes);
+        return ctor.newInstance(u, p);
+
+      } catch (NoSuchMethodException nmx){
+        throw new IOException("connection class has no suitabe ctor: " + clazz.getName());
+      } catch (IllegalAccessException iax){
+        throw new IOException("connection class has no public ctor: " + clazz.getName());
+      } catch (InvocationTargetException itx){
+        throw new IOException("exception initializing URLConnection", itx);
+      } catch (InstantiationException ix){
+        throw new IOException("connection class cannot be instantiated: " + clazz.getName());
+      }
+
+    } else {
+      // we just go with the standard thing, hoping that we have a modeled Socket layer
+      return new CachedROHttpConnection(u, p, this);
+    }
+  }
+
+  @Override
+  protected java.net.URLConnection openConnection(URL u) throws IOException {
+    return openConnection(u, null);
+  }
+
+  //... and a lot of methods still missing
+}