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Java example source code file (DefaultClientConnectionOperator.java)
The DefaultClientConnectionOperator.java example source code/* * ==================================================================== * 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.impl.conn; import java.io.IOException; import java.net.ConnectException; import java.net.Socket; import java.net.InetAddress; import org.apache.http.annotation.ThreadSafe; import org.apache.http.HttpHost; import org.apache.http.params.HttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.protocol.HttpContext; import org.apache.http.conn.ConnectTimeoutException; import org.apache.http.conn.HttpHostConnectException; import org.apache.http.conn.OperatedClientConnection; import org.apache.http.conn.ClientConnectionOperator; import org.apache.http.conn.scheme.LayeredSocketFactory; import org.apache.http.conn.scheme.PlainSocketFactory; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.scheme.SchemeRegistry; import org.apache.http.conn.scheme.SocketFactory; /** * Default implementation of a {@link ClientConnectionOperator}. It uses * a {@link SchemeRegistry} to look up {@link SocketFactory} objects. * <p> * The following parameters can be used to customize the behavior of this * class: * <ul> * <li>{@link org.apache.http.params.CoreProtocolPNames#HTTP_ELEMENT_CHARSET} * <li>{@link org.apache.http.params.CoreConnectionPNames#TCP_NODELAY} * <li>{@link org.apache.http.params.CoreConnectionPNames#SO_TIMEOUT} * <li>{@link org.apache.http.params.CoreConnectionPNames#SO_LINGER} * <li>{@link org.apache.http.params.CoreConnectionPNames#SOCKET_BUFFER_SIZE} * <li>{@link org.apache.http.params.CoreConnectionPNames#MAX_LINE_LENGTH} * </ul> * * @since 4.0 */ @ThreadSafe public class DefaultClientConnectionOperator implements ClientConnectionOperator { /** The scheme registry for looking up socket factories. */ protected final SchemeRegistry schemeRegistry; // @ThreadSafe /** * Creates a new client connection operator for the given scheme registry. * * @param schemes the scheme registry */ public DefaultClientConnectionOperator(SchemeRegistry schemes) { if (schemes == null) { throw new IllegalArgumentException ("Scheme registry must not be null."); } schemeRegistry = schemes; } public OperatedClientConnection createConnection() { return new DefaultClientConnection(); } public void openConnection(OperatedClientConnection conn, HttpHost target, InetAddress local, HttpContext context, HttpParams params) throws IOException { if (conn == null) { throw new IllegalArgumentException ("Connection must not be null."); } if (target == null) { throw new IllegalArgumentException ("Target host must not be null."); } if (params == null) { throw new IllegalArgumentException ("Parameters must not be null."); } if (conn.isOpen()) { throw new IllegalArgumentException ("Connection must not be open."); } SocketFactory sf = null; LayeredSocketFactory layeredsf = null; Scheme schm = schemeRegistry.getScheme(target.getSchemeName()); sf = schm.getSocketFactory(); if (sf instanceof LayeredSocketFactory) { layeredsf = (LayeredSocketFactory) sf; sf = PlainSocketFactory.getSocketFactory(); } InetAddress[] addresses = InetAddress.getAllByName(target.getHostName()); for (int i = 0; i < addresses.length; i++) { InetAddress address = addresses[i]; boolean last = i == addresses.length - 1; Socket sock = sf.createSocket(); conn.opening(sock, target); try { Socket connsock = sf.connectSocket( sock, address.getHostAddress(), schm.resolvePort(target.getPort()), local, 0, params); if (sock != connsock) { sock = connsock; conn.opening(sock, target); } if (layeredsf != null) { connsock = layeredsf.createSocket( sock, target.getHostName(), schm.resolvePort(target.getPort()), true); if (sock != connsock) { sock = connsock; conn.opening(sock, target); } sf = layeredsf; } prepareSocket(sock, context, params); conn.openCompleted(sf.isSecure(sock), params); break; } catch (ConnectException ex) { if (last) { throw new HttpHostConnectException(target, ex); } } catch (ConnectTimeoutException ex) { if (last) { throw ex; } } } } public void updateSecureConnection(OperatedClientConnection conn, HttpHost target, HttpContext context, HttpParams params) throws IOException { if (conn == null) { throw new IllegalArgumentException ("Connection must not be null."); } if (target == null) { throw new IllegalArgumentException ("Target host must not be null."); } if (params == null) { throw new IllegalArgumentException ("Parameters must not be null."); } if (!conn.isOpen()) { throw new IllegalArgumentException ("Connection must be open."); } final Scheme schm = schemeRegistry.getScheme(target.getSchemeName()); if (!(schm.getSocketFactory() instanceof LayeredSocketFactory)) { throw new IllegalArgumentException ("Target scheme (" + schm.getName() + ") must have layered socket factory."); } final LayeredSocketFactory lsf = (LayeredSocketFactory) schm.getSocketFactory(); final Socket sock; try { sock = lsf.createSocket (conn.getSocket(), target.getHostName(), target.getPort(), true); } catch (ConnectException ex) { throw new HttpHostConnectException(target, ex); } prepareSocket(sock, context, params); conn.update(sock, target, lsf.isSecure(sock), params); } /** * Performs standard initializations on a newly created socket. * * @param sock the socket to prepare * @param context the context for the connection * @param params the parameters from which to prepare the socket * * @throws IOException in case of an IO problem */ protected void prepareSocket(Socket sock, HttpContext context, HttpParams params) throws IOException { sock.setTcpNoDelay(HttpConnectionParams.getTcpNoDelay(params)); sock.setSoTimeout(HttpConnectionParams.getSoTimeout(params)); int linger = HttpConnectionParams.getLinger(params); if (linger >= 0) { sock.setSoLinger(linger > 0, linger); } } } Other Java examples (source code examples)Here is a short list of links related to this Java DefaultClientConnectionOperator.java source code file: |
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