| /* |
| * Copyright (C) 2013 Square, Inc. |
| * |
| * 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 com.squareup.okhttp; |
| |
| import java.io.IOException; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| import javax.net.ssl.SSLHandshakeException; |
| |
| /** |
| * A blacklist of failed routes to avoid when creating a new connection to a |
| * target address. This is used so that OkHttp can learn from its mistakes: if |
| * there was a failure attempting to connect to a specific IP address, proxy |
| * server or TLS mode, that failure is remembered and alternate routes are |
| * preferred. |
| */ |
| public final class RouteDatabase { |
| private final Set<Route> failedRoutes = new LinkedHashSet<Route>(); |
| |
| /** Records a failure connecting to {@code failedRoute}. */ |
| public synchronized void failed(Route failedRoute, IOException failure) { |
| failedRoutes.add(failedRoute); |
| |
| if (!(failure instanceof SSLHandshakeException)) { |
| // If the problem was not related to SSL then it will also fail with |
| // a different TLS mode therefore we can be proactive about it. |
| failedRoutes.add(failedRoute.flipTlsMode()); |
| } |
| } |
| |
| /** Records success connecting to {@code failedRoute}. */ |
| public synchronized void connected(Route route) { |
| failedRoutes.remove(route); |
| } |
| |
| /** Returns true if {@code route} has failed recently and should be avoided. */ |
| public synchronized boolean shouldPostpone(Route route) { |
| return failedRoutes.contains(route); |
| } |
| |
| public synchronized int failedRoutesCount() { |
| return failedRoutes.size(); |
| } |
| } |