io.honeybadger.org.apache.http.conn.routing.HttpRouteDirector Maven / Gradle / Ivy
/*
* ====================================================================
* 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
* .
*
*/
package org.apache.http.conn.routing;
/**
* Provides directions on establishing a route.
* Implementations of this interface compare a planned route with
* a tracked route and indicate the next step required.
*
* @since 4.0
*/
public interface HttpRouteDirector {
/** Indicates that the route can not be established at all. */
public final static int UNREACHABLE = -1;
/** Indicates that the route is complete. */
public final static int COMPLETE = 0;
/** Step: open connection to target. */
public final static int CONNECT_TARGET = 1;
/** Step: open connection to proxy. */
public final static int CONNECT_PROXY = 2;
/** Step: tunnel through proxy to target. */
public final static int TUNNEL_TARGET = 3;
/** Step: tunnel through proxy to other proxy. */
public final static int TUNNEL_PROXY = 4;
/** Step: layer protocol (over tunnel). */
public final static int LAYER_PROTOCOL = 5;
/**
* Provides the next step.
*
* @param plan the planned route
* @param fact the currently established route, or
* {@code null} if nothing is established
*
* @return one of the constants defined in this interface, 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);
}