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    1   /*
    2    *  Licensed to the Apache Software Foundation (ASF) under one
    3    *  or more contributor license agreements.  See the NOTICE file
    4    *  distributed with this work for additional information
    5    *  regarding copyright ownership.  The ASF licenses this file
    6    *  to you under the Apache License, Version 2.0 (the
    7    *  "License"); you may not use this file except in compliance
    8    *  with the License.  You may obtain a copy of the License at
    9    *
    10   *    http://www.apache.org/licenses/LICENSE-2.0
    11   *
    12   *  Unless required by applicable law or agreed to in writing,
    13   *  software distributed under the License is distributed on an
    14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    15   *  KIND, either express or implied.  See the License for the
    16   *  specific language governing permissions and limitations
    17   *  under the License.
    18   *
    19   */
    20  package org.apache.mina.example.proxy;
    21
    22  import java.net.SocketAddress;
    23
    24  import org.apache.mina.core.RuntimeIoException;
    25  import org.apache.mina.core.future.ConnectFuture;
    26  import org.apache.mina.core.future.IoFutureListener;
    27  import org.apache.mina.core.service.IoConnector;
    28  import org.apache.mina.core.session.IoSession;
    29
    30  /**
    31   * Handles the client to proxy part of the proxied connection.
    32   *
    33   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
    34   */
    35  public class ClientToProxyIoHandler extends AbstractProxyIoHandler {
    36      private final ServerToProxyIoHandler connectorHandler = new ServerToProxyIoHandler();
    37
    38      private final IoConnector connector;
    39
    40      private final SocketAddress remoteAddress;
    41
    42      public ClientToProxyIoHandler(IoConnector connector,
    43              SocketAddress remoteAddress) {
    44          this.connector = connector;
    45          this.remoteAddress = remoteAddress;
    46          connector.setHandler(connectorHandler);
    47      }
    48
    49      @Override
    50      public void sessionOpened(final IoSession session) throws Exception {
    51
    52          connector.connect(remoteAddress).addListener(new IoFutureListener<ConnectFuture>() {
    53              public void operationComplete(ConnectFuture future) {
    54                  try {
    55                      future.getSession().setAttribute(OTHER_IO_SESSION, session);
    56                      session.setAttribute(OTHER_IO_SESSION, future.getSession());
    57                      IoSession session2 = future.getSession();
    58                      session2.resumeRead();
    59                      session2.resumeWrite();
    60                  } catch (RuntimeIoException e) {
    61                      // Connect failed
    62                      session.close(true);
    63                  } finally {
    64                      session.resumeRead();
    65                      session.resumeWrite();
    66                  }
    67              }
    68          });
    69      }
    70  }