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package com.trilead.ssh2;
/**
* Contains constants that can be used to specify what conditions to wait for on
* a SSH-2 channel (e.g., represented by a {@link Session}).
*
* @see Session#waitForCondition(int, long)
*
* @author Christian Plattner, plattner@trilead.com
* @version $Id: ChannelCondition.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
*/
public abstract interface ChannelCondition
{
/**
* A timeout has occurred, none of your requested conditions is fulfilled.
* However, other conditions may be true - therefore, NEVER use the "=="
* operator to test for this (or any other) condition. Always use
* something like <code>((cond & ChannelCondition.CLOSED) != 0)</code>.
*/
public static final int TIMEOUT = 1;
/**
* The underlying SSH-2 channel, however not necessarily the whole connection,
* has been closed. This implies <code>EOF</code>. Note that there may still
* be unread stdout or stderr data in the local window, i.e, <code>STDOUT_DATA</code>
* or/and <code>STDERR_DATA</code> may be set at the same time.
*/
public static final int CLOSED = 2;
/**
* There is stdout data available that is ready to be consumed.
*/
public static final int STDOUT_DATA = 4;
/**
* There is stderr data available that is ready to be consumed.
*/
public static final int STDERR_DATA = 8;
/**
* EOF on has been reached, no more _new_ stdout or stderr data will arrive
* from the remote server. However, there may be unread stdout or stderr
* data, i.e, <code>STDOUT_DATA</code> or/and <code>STDERR_DATA</code>
* may be set at the same time.
*/
public static final int EOF = 16;
/**
* The exit status of the remote process is available.
* Some servers never send the exist status, or occasionally "forget" to do so.
*/
public static final int EXIT_STATUS = 32;
/**
* The exit signal of the remote process is available.
*/
public static final int EXIT_SIGNAL = 64;
}
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