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KexState.java
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KexState.java
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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.
*/
package org.apache.sshd.common.kex;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Set;
/**
* Used to track the key-exchange (KEX) protocol progression.
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public enum KexState {
UNKNOWN,
/**
* A key exchange has been initiated by this party.
*/
INIT,
/**
* A key exchange is running. Both sides have received the peer's SSH_MSG_KEX_INIT.
*/
RUN,
/**
* Keys have been exchanged; this party has sent its SSH_MSG_NEW_KEYS.
*/
KEYS,
/**
* The key exchange is done; both parties have received the peer's SSH:MSG_NEW_KEYS, and there is no ongoing key
* exchange.
*/
DONE;
public static final Set<KexState> VALUES = Collections.unmodifiableSet(EnumSet.allOf(KexState.class));
}