QuicheQuicConnection.java — netty Source File

Source Code

/*
 * Copyright 2021 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.codec.quic;

import io.netty.buffer.ByteBuf;
import io.netty.util.ReferenceCounted;
import io.netty.util.ResourceLeakDetector;
import io.netty.util.ResourceLeakDetectorFactory;
import io.netty.util.ResourceLeakTracker;
import org.jetbrains.annotations.Nullable;

import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.util.function.Consumer;
import java.util.function.Supplier;

final class QuicheQuicConnection {
    private static final int TOTAL_RECV_INFO_SIZE = Quiche.SIZEOF_QUICHE_RECV_INFO +
            Quiche.SIZEOF_SOCKADDR_STORAGE + Quiche.SIZEOF_SOCKADDR_STORAGE;
    private static final ResourceLeakDetector<QuicheQuicConnection> leakDetector =
            ResourceLeakDetectorFactory.instance().newResourceLeakDetector(QuicheQuicConnection.class);
    private final QuicheQuicSslEngine engine;

    private final ResourceLeakTracker<QuicheQuicConnection> leakTracker;

    final long ssl;
    private ReferenceCounted refCnt;

    // This block of memory is used to store the following structs (in this order):
    // - quiche_recv_info
    // - sockaddr_storage
    // - quiche_recv_info
    // - sockaddr_storage
    // - quiche_send_info
    // - quiche_send_info
    //
    // We need to have every stored 2 times as we need to check if the last sockaddr has changed between
    // quiche_conn_recv and quiche_conn_send calls. If this happens we know a QUIC connection migration did happen.
    private final ByteBuf recvInfoBuffer;
    private final ByteBuf sendInfoBuffer;

    private boolean sendInfoFirst = true;
    private final ByteBuffer recvInfoBuffer1;
    private final ByteBuffer sendInfoBuffer1;
    private final ByteBuffer sendInfoBuffer2;

    private long connection;
// ... (174 more lines)