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Diffstat (limited to 'src/org/apache/http/conn/routing/BasicRouteDirector.java')
| -rw-r--r-- | src/org/apache/http/conn/routing/BasicRouteDirector.java | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/src/org/apache/http/conn/routing/BasicRouteDirector.java b/src/org/apache/http/conn/routing/BasicRouteDirector.java deleted file mode 100644 index a3714ec..0000000 --- a/src/org/apache/http/conn/routing/BasicRouteDirector.java +++ /dev/null @@ -1,181 +0,0 @@ -/* - * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/routing/BasicRouteDirector.java $ - * $Revision: 620255 $ - * $Date: 2008-02-10 02:23:55 -0800 (Sun, 10 Feb 2008) $ - * - * ==================================================================== - * 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.conn.routing; - - - -/** - * Basic implementation of an {@link HttpRouteDirector HttpRouteDirector}. - * This implementation is stateless and therefore thread-safe. - * - * @author <a href="mailto:rolandw at apache.org">Roland Weber</a> - * - * - * <!-- empty lines to avoid svn diff problems --> - * @version $Revision: 620255 $ - * - * @since 4.0 - */ -public class BasicRouteDirector implements HttpRouteDirector { - - // public default constructor - - - /** - * Provides the next step. - * - * @param plan the planned route - * @param fact the currently established route, or - * <code>null</code> if nothing is established - * - * @return one of the constants defined in this class, indicating - * either the next step to perform, or success, or failure. - * 0 is for success, a negative value for failure. - */ - public int nextStep(RouteInfo plan, RouteInfo fact) { - if (plan == null) { - throw new IllegalArgumentException - ("Planned route may not be null."); - } - - int step = UNREACHABLE; - - if ((fact == null) || (fact.getHopCount() < 1)) - step = firstStep(plan); - else if (plan.getHopCount() > 1) - step = proxiedStep(plan, fact); - else - step = directStep(plan, fact); - - return step; - - } // nextStep - - - /** - * Determines the first step to establish a route. - * - * @param plan the planned route - * - * @return the first step - */ - protected int firstStep(RouteInfo plan) { - - return (plan.getHopCount() > 1) ? - CONNECT_PROXY : CONNECT_TARGET; - } - - - /** - * Determines the next step to establish a direct connection. - * - * @param plan the planned route - * @param fact the currently established route - * - * @return one of the constants defined in this class, indicating - * either the next step to perform, or success, or failure - */ - protected int directStep(RouteInfo plan, RouteInfo fact) { - - if (fact.getHopCount() > 1) - return UNREACHABLE; - if (!plan.getTargetHost().equals(fact.getTargetHost())) - return UNREACHABLE; - // If the security is too low, we could now suggest to layer - // a secure protocol on the direct connection. Layering on direct - // connections has not been supported in HttpClient 3.x, we don't - // consider it here until there is a real-life use case for it. - - // Should we tolerate if security is better than planned? - // (plan.isSecure() && !fact.isSecure()) - if (plan.isSecure() != fact.isSecure()) - return UNREACHABLE; - - // Local address has to match only if the plan specifies one. - if ((plan.getLocalAddress() != null) && - !plan.getLocalAddress().equals(fact.getLocalAddress()) - ) - return UNREACHABLE; - - return COMPLETE; - } - - - /** - * Determines the next step to establish a connection via proxy. - * - * @param plan the planned route - * @param fact the currently established route - * - * @return one of the constants defined in this class, indicating - * either the next step to perform, or success, or failure - */ - protected int proxiedStep(RouteInfo plan, RouteInfo fact) { - - if (fact.getHopCount() <= 1) - return UNREACHABLE; - if (!plan.getTargetHost().equals(fact.getTargetHost())) - return UNREACHABLE; - final int phc = plan.getHopCount(); - final int fhc = fact.getHopCount(); - if (phc < fhc) - return UNREACHABLE; - - for (int i=0; i<fhc-1; i++) { - if (!plan.getHopTarget(i).equals(fact.getHopTarget(i))) - return UNREACHABLE; - } - // now we know that the target matches and proxies so far are the same - if (phc > fhc) - return TUNNEL_PROXY; // need to extend the proxy chain - - // proxy chain and target are the same, check tunnelling and layering - if ((fact.isTunnelled() && !plan.isTunnelled()) || - (fact.isLayered() && !plan.isLayered())) - return UNREACHABLE; - - if (plan.isTunnelled() && !fact.isTunnelled()) - return TUNNEL_TARGET; - if (plan.isLayered() && !fact.isLayered()) - return LAYER_PROTOCOL; - - // tunnel and layering are the same, remains to check the security - // Should we tolerate if security is better than planned? - // (plan.isSecure() && !fact.isSecure()) - if (plan.isSecure() != fact.isSecure()) - return UNREACHABLE; - - return COMPLETE; - } - - -} // class BasicRouteDirector |