com.hivemq.mqtt.handler.connect.NoTlsHandshakeIdleHandler Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hivemq-community-edition-embedded Show documentation

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5

The newest version!

/*
 * Copyright 2019-present HiveMQ GmbH
 *
 * 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.
 */
package com.hivemq.mqtt.handler.connect;

import com.google.inject.Inject;
import com.hivemq.extension.sdk.api.annotations.NotNull;
import com.hivemq.mqtt.handler.disconnect.MqttServerDisconnector;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;

import static com.hivemq.logging.LoggingUtils.appendListenerToMessage;

/**
 * @author Christoph Schäbel
 */
public class NoTlsHandshakeIdleHandler extends ChannelInboundHandlerAdapter {

    private final @NotNull MqttServerDisconnector mqttServerDisconnector;

    @Inject
    public NoTlsHandshakeIdleHandler(final @NotNull MqttServerDisconnector mqttServerDisconnector) {
        this.mqttServerDisconnector = mqttServerDisconnector;
    }

    @Override
    public void userEventTriggered(final @NotNull ChannelHandlerContext ctx, final @NotNull Object evt)
            throws Exception {

        if (evt instanceof IdleStateEvent) {
            if (((IdleStateEvent) evt).state() == IdleState.READER_IDLE) {
                final String eventLogMessage = appendListenerToMessage(ctx.channel(), "TLS handshake not finished in time");
                mqttServerDisconnector.logAndClose(ctx.channel(),
                        "Client with IP {} disconnected. The client was idle for too long without finishing the TLS handshake.",
                        eventLogMessage);
                return;
            }
        }
        super.userEventTriggered(ctx, evt);
    }
}