Java tutorial
/* * ==================================================================== * 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 org.apache.http.impl.nio.conn; import java.net.InetAddress; import org.apache.http.HttpException; import org.apache.http.HttpHost; import org.apache.http.HttpRequest; import org.apache.http.client.protocol.ClientContext; import org.apache.http.conn.params.ConnRouteParams; import org.apache.http.conn.routing.HttpRoute; import org.apache.http.conn.routing.HttpRoutePlanner; import org.apache.http.nio.conn.scheme.AsyncScheme; import org.apache.http.nio.conn.scheme.AsyncSchemeRegistry; import org.apache.http.nio.conn.scheme.LayeringStrategy; import org.apache.http.protocol.HttpContext; @Deprecated public class DefaultHttpAsyncRoutePlanner implements HttpRoutePlanner { private final AsyncSchemeRegistry schemeRegistry; public DefaultHttpAsyncRoutePlanner(final AsyncSchemeRegistry schemeRegistry) { super(); this.schemeRegistry = schemeRegistry; } private AsyncSchemeRegistry getSchemeRegistry(final HttpContext context) { AsyncSchemeRegistry reg = (AsyncSchemeRegistry) context.getAttribute(ClientContext.SCHEME_REGISTRY); if (reg == null) { reg = this.schemeRegistry; } return reg; } @Override public HttpRoute determineRoute(final HttpHost target, final HttpRequest request, final HttpContext context) throws HttpException { if (request == null) { throw new IllegalStateException("Request may not be null"); } HttpRoute route = ConnRouteParams.getForcedRoute(request.getParams()); if (route != null) { return route; } if (target == null) { throw new IllegalStateException("Target host may be null"); } final InetAddress local = ConnRouteParams.getLocalAddress(request.getParams()); final HttpHost proxy = ConnRouteParams.getDefaultProxy(request.getParams()); AsyncScheme scheme; try { final AsyncSchemeRegistry registry = getSchemeRegistry(context); scheme = registry.getScheme(target); } catch (final IllegalStateException ex) { throw new HttpException(ex.getMessage()); } final LayeringStrategy layeringStrategy = scheme.getLayeringStrategy(); final boolean secure = layeringStrategy != null && layeringStrategy.isSecure(); if (proxy == null) { route = new HttpRoute(target, local, secure); } else { route = new HttpRoute(target, local, proxy, secure); } return route; } }