/*
 * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
 * and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided with
 * the distribution.
 *
 * 3. The names of the authors may not be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jcraft.jsch;

abstract class Request {
  private boolean reply = false;
  private Session session = null;
  private Channel channel = null;

  void request(Session session, Channel channel) throws Exception {
    this.session = session;
    this.channel = channel;
    if (channel.connectTimeout > 0) {
      setReply(true);
    }
  }

  boolean waitForReply() {
    return reply;
  }

  void setReply(boolean reply) {
    this.reply = reply;
  }

  void write(Packet packet) throws Exception {
    if (reply) {
      channel.reply = -1;
    }
    session.write(packet);
    if (reply) {
      long start = System.currentTimeMillis();
      long timeout = channel.connectTimeout;
      while (channel.isConnected() && channel.reply == -1) {
        try {
          Thread.sleep(10);
        } catch (Exception ee) {
        }
        if (timeout > 0L && (System.currentTimeMillis() - start) > timeout) {
          channel.reply = 0;
          throw new JSchException("channel request: timeout");
        }
      }

      if (channel.reply == 0) {
        throw new JSchException("failed to send channel request");
      }
    }
  }
}
