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/*
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 * 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.
 * ====================================================================
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 * This software consists of voluntary contributions made by many
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package org.apache.http.conn;

import java.io.IOException;
import java.net.Socket;

import org.apache.http.HttpClientConnection;
import org.apache.http.HttpHost;
import org.apache.http.HttpInetConnection;
import org.apache.http.params.HttpParams;

/**
 * A client-side connection that relies on outside logic to connect sockets to the
 * appropriate hosts. It can be operated directly by an application, or through an
 * {@link ClientConnectionOperator operator}.
 *
 * @since 4.0
 *
 * @deprecated (4.3) replaced by {@link HttpClientConnectionManager}.
 */
@Deprecated
public interface OperatedClientConnection extends HttpClientConnection, HttpInetConnection {

    /**
     * Obtains the target host for this connection.
     * If the connection is to a proxy but not tunnelled, this is
     * the proxy. If the connection is tunnelled through a proxy,
     * this is the target of the tunnel.
     * 
* The return value is well-defined only while the connection is open. * It may change even while the connection is open, * because of an {@link #update update}. * * @return the host to which this connection is opened */ HttpHost getTargetHost(); /** * Indicates whether this connection is secure. * The return value is well-defined only while the connection is open. * It may change even while the connection is open, * because of an {@link #update update}. * * @return true if this connection is secure, * false otherwise */ boolean isSecure(); /** * Obtains the socket for this connection. * The return value is well-defined only while the connection is open. * It may change even while the connection is open, * because of an {@link #update update}. * * @return the socket for communicating with the * {@link #getTargetHost target host} */ Socket getSocket(); /** * Signals that this connection is in the process of being open. *

* By calling this method, the connection can be re-initialized * with a new Socket instance before {@link #openCompleted} is called. * This enabled the connection to close that socket if * {@link org.apache.http.HttpConnection#shutdown shutdown} * is called before it is fully open. Closing an unconnected socket * will interrupt a thread that is blocked on the connect. * Otherwise, that thread will either time out on the connect, * or it returns successfully and then opens this connection * which was just shut down. *

* This method can be called multiple times if the connection * is layered over another protocol. Note: This method * will not close the previously used socket. It is * the caller's responsibility to close that socket if it is * no longer required. *

* The caller must invoke {@link #openCompleted} in order to complete * the process. * * @param sock the unconnected socket which is about to * be connected. * @param target the target host of this connection */ void opening(Socket sock, HttpHost target) throws IOException; /** * Signals that the connection has been successfully open. * An attempt to call this method on an open connection will cause * an exception. * * @param secure true if this connection is secure, for * example if an SSLSocket is used, or * false if it is not secure * @param params parameters for this connection. The parameters will * be used when creating dependent objects, for example * to determine buffer sizes. */ void openCompleted(boolean secure, HttpParams params) throws IOException; /** * Updates this connection. * A connection can be updated only while it is open. * Updates are used for example when a tunnel has been established, * or when a TLS/SSL connection has been layered on top of a plain * socket connection. *
* Note: Updating the connection will not close the * previously used socket. It is the caller's responsibility to close * that socket if it is no longer required. * * @param sock the new socket for communicating with the target host, * or null to continue using the old socket. * If null is passed, helper objects that * depend on the socket should be re-used. In that case, * some changes in the parameters will not take effect. * @param target the new target host of this connection * @param secure true if this connection is now secure, * false if it is not secure * @param params new parameters for this connection */ void update(Socket sock, HttpHost target, boolean secure, HttpParams params) throws IOException; }





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