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

mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/conn/SystemDefaultRoutePlanner.java

@@ -0,0 +1,132 @@
+/*
+ * ====================================================================
+ * 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.impl.conn;
+
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.List;
+
+import ch.boye.httpclientandroidlib.HttpException;
+import ch.boye.httpclientandroidlib.HttpHost;
+import ch.boye.httpclientandroidlib.HttpRequest;
+import ch.boye.httpclientandroidlib.annotation.Immutable;
+import ch.boye.httpclientandroidlib.conn.SchemePortResolver;
+import ch.boye.httpclientandroidlib.protocol.HttpContext;
+
+/**
+ * {@link ch.boye.httpclientandroidlib.conn.routing.HttpRoutePlanner} implementation
+ * based on {@link ProxySelector}. By default, this class will pick up
+ * the proxy settings of the JVM, either from system properties
+ * or from the browser running the application.
+ *
+ * @since 4.3
+ */
+@Immutable
+public class SystemDefaultRoutePlanner extends DefaultRoutePlanner {
+
+    private final ProxySelector proxySelector;
+
+    public SystemDefaultRoutePlanner(
+            final SchemePortResolver schemePortResolver,
+            final ProxySelector proxySelector) {
+        super(schemePortResolver);
+        this.proxySelector = proxySelector != null ? proxySelector : ProxySelector.getDefault();
+    }
+
+    public SystemDefaultRoutePlanner(final ProxySelector proxySelector) {
+        this(null, proxySelector);
+    }
+
+    @Override
+    protected HttpHost determineProxy(
+            final HttpHost    target,
+            final HttpRequest request,
+            final HttpContext context) throws HttpException {
+        final URI targetURI;
+        try {
+            targetURI = new URI(target.toURI());
+        } catch (final URISyntaxException ex) {
+            throw new HttpException("Cannot convert host to URI: " + target, ex);
+        }
+        final List<Proxy> proxies = this.proxySelector.select(targetURI);
+        final Proxy p = chooseProxy(proxies);
+        HttpHost result = null;
+        if (p.type() == Proxy.Type.HTTP) {
+            // convert the socket address to an HttpHost
+            if (!(p.address() instanceof InetSocketAddress)) {
+                throw new HttpException("Unable to handle non-Inet proxy address: " + p.address());
+            }
+            final InetSocketAddress isa = (InetSocketAddress) p.address();
+            // assume default scheme (http)
+            result = new HttpHost(getHost(isa), isa.getPort());
+        }
+
+        return result;
+    }
+
+    private String getHost(final InetSocketAddress isa) {
+
+        //@@@ Will this work with literal IPv6 addresses, or do we
+        //@@@ need to wrap these in [] for the string representation?
+        //@@@ Having it in this method at least allows for easy workarounds.
+       return isa.isUnresolved() ?
+            isa.getHostName() : isa.getAddress().getHostAddress();
+
+    }
+
+    private Proxy chooseProxy(final List<Proxy> proxies) {
+        Proxy result = null;
+        // check the list for one we can use
+        for (int i=0; (result == null) && (i < proxies.size()); i++) {
+            final Proxy p = proxies.get(i);
+            switch (p.type()) {
+
+            case DIRECT:
+            case HTTP:
+                result = p;
+                break;
+
+            case SOCKS:
+                // SOCKS hosts are not handled on the route level.
+                // The socket may make use of the SOCKS host though.
+                break;
+            }
+        }
+        if (result == null) {
+            //@@@ log as warning or info that only a socks proxy is available?
+            // result can only be null if all proxies are socks proxies
+            // socks proxies are not handled on the route planning level
+            result = Proxy.NO_PROXY;
+        }
+        return result;
+    }
+
+}