pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/ConnectionReuseStrategy.java

@@ -0,0 +1,70 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package ch.boye.httpclientandroidlib;
+
+import ch.boye.httpclientandroidlib.protocol.HttpContext;
+
+/**
+ * Interface for deciding whether a connection can be re-used for
+ * subsequent requests and should be kept alive.
+ * <p>
+ * Implementations of this interface must be thread-safe. Access to shared
+ * data must be synchronized as methods of this interface may be executed
+ * from multiple threads.
+ *
+ * @since 4.0
+ */
+public interface ConnectionReuseStrategy {
+
+    /**
+     * Decides whether a connection can be kept open after a request.
+     * If this method returns <code>false</code>, the caller MUST
+     * close the connection to correctly comply with the HTTP protocol.
+     * If it returns <code>true</code>, the caller SHOULD attempt to
+     * keep the connection open for reuse with another request.
+     * <br/>
+     * One can use the HTTP context to retrieve additional objects that
+     * may be relevant for the keep-alive strategy: the actual HTTP
+     * connection, the original HTTP request, target host if known,
+     * number of times the connection has been reused already and so on.
+     * <br/>
+     * If the connection is already closed, <code>false</code> is returned.
+     * The stale connection check MUST NOT be triggered by a
+     * connection reuse strategy.
+     *
+     * @param response
+     *          The last response received over that connection.
+     * @param context   the context in which the connection is being
+     *          used.
+     *
+     * @return <code>true</code> if the connection is allowed to be reused, or
+     *         <code>false</code> if it MUST NOT be reused
+     */
+    boolean keepAlive(HttpResponse response, HttpContext context);
+
+}