/*
 * Copyright 2008-present MongoDB, Inc.
 *
 * Licensed 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.
 *
 * Original Work: MIT License, Copyright (c) [2015-2018] all contributors
 * https://github.com/marianobarrios/tls-channel
 */

package com.mongodb.internal.connection.tlschannel;

import java.nio.channels.ByteChannel;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;

This exception signals the caller that the operation cannot continue because bytesProduced need to be write to the underlying ByteChannel, the channel is non-blocking and there are no buffer space available. The caller should try the operation again, either with the channel in blocking mode of after ensuring that buffer space exists. 
 For SocketChannels, a Selector can be used to find out when the method should be retried. 
 Caveat: Any TlsChannel I/O method can throw this exception. In particular, read may want to write data. This is because TLS
handshakes may occur at any time (initiated by either the client or the
server).

This exception is akin to the SSL_ERROR_WANT_WRITE error code used by
OpenSSL.
See Also:

 * OpenSSL error documentation/**
 * This exception signals the caller that the operation cannot continue because
 * bytesProduced need to be write to the underlying {@link ByteChannel}, the channel is
 * non-blocking and there are no buffer space available. The caller should try
 * the operation again, either with the channel in blocking mode of after
 * ensuring that buffer space exists.
 * <p>
 * For {@link SocketChannel}s, a {@link Selector} can be used to find out when
 * the method should be retried.
 * <p>
 * Caveat: Any {@link TlsChannel} I/O method can throw this exception. In
 * particular, <code>read</code> may want to write data. This is because TLS
 * handshakes may occur at any time (initiated by either the client or the
 * server).
 * <p>
 * This exception is akin to the SSL_ERROR_WANT_WRITE error code used by
 * OpenSSL.
 *
 * @see <a href="https://www.openssl.org/docs/man1.1.0/ssl/SSL_get_error.html">
 * OpenSSL error documentation</a>
 */

public class NeedsWriteException extends WouldBlockException {

    private static final long serialVersionUID = -7789167281232559166L;
}