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The core of Neo4j Bolt Protocol, this contains the state machine for Bolt sessions.
/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
package org.neo4j.bolt.transport;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketFrameAggregator;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslHandler;
import java.util.List;
import org.neo4j.bolt.BoltChannel;
import org.neo4j.bolt.logging.BoltMessageLogging;
import org.neo4j.bolt.transport.pipeline.ProtocolHandshaker;
import org.neo4j.bolt.transport.pipeline.WebSocketFrameTranslator;
import org.neo4j.logging.LogProvider;
import static org.neo4j.bolt.transport.pipeline.ProtocolHandshaker.BOLT_MAGIC_PREAMBLE;
public class TransportSelectionHandler extends ByteToMessageDecoder
{
private static final String WEBSOCKET_MAGIC = "GET ";
private static final int MAX_WEBSOCKET_HANDSHAKE_SIZE = 65536;
private static final int MAX_WEBSOCKET_FRAME_SIZE = 65536;
private final String connector;
private final SslContext sslCtx;
private final boolean encryptionRequired;
private final boolean isEncrypted;
private final LogProvider logging;
private final BoltMessageLogging boltLogging;
private final BoltProtocolPipelineInstallerFactory handlerFactory;
TransportSelectionHandler( String connector, SslContext sslCtx, boolean encryptionRequired, boolean isEncrypted, LogProvider logging,
BoltProtocolPipelineInstallerFactory handlerFactory, BoltMessageLogging boltLogging )
{
this.connector = connector;
this.sslCtx = sslCtx;
this.encryptionRequired = encryptionRequired;
this.isEncrypted = isEncrypted;
this.logging = logging;
this.boltLogging = boltLogging;
this.handlerFactory = handlerFactory;
}
@Override
protected void decode( ChannelHandlerContext ctx, ByteBuf in, List