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      1 /*
      2  * Copyright (C) 2013 Square, Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.squareup.okhttp;
     17 
     18 import java.net.InetSocketAddress;
     19 import java.net.Proxy;
     20 
     21 /**
     22  * The concrete route used by a connection to reach an abstract origin server.
     23  * When creating a connection the client has many options:
     24  * <ul>
     25  *   <li><strong>HTTP proxy:</strong> a proxy server may be explicitly
     26  *       configured for the client. Otherwise the {@link java.net.ProxySelector
     27  *       proxy selector} is used. It may return multiple proxies to attempt.
     28  *   <li><strong>IP address:</strong> whether connecting directly to an origin
     29  *       server or a proxy, opening a socket requires an IP address. The DNS
     30  *       server may return multiple IP addresses to attempt.
     31  *   <li><strong>Modern TLS:</strong> whether to include advanced TLS options
     32  *       when attempting a HTTPS connection.
     33  * </ul>
     34  * Each route is a specific selection of these options.
     35  */
     36 public class Route {
     37   final Address address;
     38   final Proxy proxy;
     39   final InetSocketAddress inetSocketAddress;
     40   final boolean modernTls;
     41 
     42   public Route(Address address, Proxy proxy, InetSocketAddress inetSocketAddress,
     43       boolean modernTls) {
     44     if (address == null) throw new NullPointerException("address == null");
     45     if (proxy == null) throw new NullPointerException("proxy == null");
     46     if (inetSocketAddress == null) throw new NullPointerException("inetSocketAddress == null");
     47     this.address = address;
     48     this.proxy = proxy;
     49     this.inetSocketAddress = inetSocketAddress;
     50     this.modernTls = modernTls;
     51   }
     52 
     53   /** Returns the {@link Address} of this route. */
     54   public Address getAddress() {
     55     return address;
     56   }
     57 
     58   /**
     59    * Returns the {@link Proxy} of this route.
     60    *
     61    * <strong>Warning:</strong> This may disagree with {@link Address#getProxy}
     62    * is null. When the address's proxy is null, the proxy selector will be used.
     63    */
     64   public Proxy getProxy() {
     65     return proxy;
     66   }
     67 
     68   /** Returns the {@link InetSocketAddress} of this route. */
     69   public InetSocketAddress getSocketAddress() {
     70     return inetSocketAddress;
     71   }
     72 
     73   /** Returns true if this route uses modern TLS. */
     74   public boolean isModernTls() {
     75     return modernTls;
     76   }
     77 
     78   @Override public boolean equals(Object obj) {
     79     if (obj instanceof Route) {
     80       Route other = (Route) obj;
     81       return (address.equals(other.address)
     82           && proxy.equals(other.proxy)
     83           && inetSocketAddress.equals(other.inetSocketAddress)
     84           && modernTls == other.modernTls);
     85     }
     86     return false;
     87   }
     88 
     89   @Override public int hashCode() {
     90     int result = 17;
     91     result = 31 * result + address.hashCode();
     92     result = 31 * result + proxy.hashCode();
     93     result = 31 * result + inetSocketAddress.hashCode();
     94     result = result + (modernTls ? (31 * result) : 0);
     95     return result;
     96   }
     97 }
     98