SslClientHelloHandler.java — netty Source File

Source Code

/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.ssl;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOutboundHandler;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.DecoderException;
import io.netty.handler.codec.TooLongFrameException;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.FutureListener;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.net.SocketAddress;
import java.util.List;

/**
 * {@link ByteToMessageDecoder} which allows to be notified once a full {@code ClientHello} was received.
 */
public abstract class SslClientHelloHandler<T> extends ByteToMessageDecoder implements ChannelOutboundHandler {

    /**
     * The maximum length of client hello message as defined by
     * <a href="https://www.rfc-editor.org/rfc/rfc5246#section-6.2.1">RFC5246</a>.
     */
    public static final int MAX_CLIENT_HELLO_LENGTH = 0xFFFFFF;

    private static final InternalLogger logger =
            InternalLoggerFactory.getInstance(SslClientHelloHandler.class);

    private final int maxClientHelloLength;
    private boolean handshakeFailed;
    private boolean suppressRead;
    private boolean readPending;
    private ByteBuf handshakeBuffer;

    public SslClientHelloHandler() {
        this(MAX_CLIENT_HELLO_LENGTH);
    }

    protected SslClientHelloHandler(int maxClientHelloLength) {
// ... (282 more lines)