com.bugvm.okhttp.RouteDatabase Maven / Gradle / Ivy
/*
* 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.bugvm.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 failedRoutes = new LinkedHashSet();
/** 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();
}
}