IndexAwareQuicConnectionIdGenerator Class — netty Architecture

Source Code

codec-classes-quic/src/main/java/io/netty/handler/codec/quic/QuicCodecDispatcher.java lines 257–300

    private static final class IndexAwareQuicConnectionIdGenerator implements QuicConnectionIdGenerator {
        private final int idx;
        private final QuicConnectionIdGenerator idGenerator;

        IndexAwareQuicConnectionIdGenerator(int idx, QuicConnectionIdGenerator idGenerator) {
            this.idx = idx;
            this.idGenerator = idGenerator;
        }

        @Override
        public ByteBuffer newId(int length) {
            if (length > Short.BYTES) {
                return encodeIdx(idGenerator.newId(length - Short.BYTES), idx);
            }
            return idGenerator.newId(length);
        }

        @Override
        public ByteBuffer newId(ByteBuffer input, int length) {
            if (length > Short.BYTES) {
                return encodeIdx(idGenerator.newId(input, length - Short.BYTES), idx);
            }
            return idGenerator.newId(input, length);
        }

        @Override
        public ByteBuffer newId(ByteBuffer scid, ByteBuffer dcid, int length) {
            if (length > Short.BYTES) {
                return encodeIdx(idGenerator.newId(scid, dcid, length - Short.BYTES), idx);
            }
            return idGenerator.newId(scid, dcid, length);
        }

        @Override
        public int maxConnectionIdLength() {
            return idGenerator.maxConnectionIdLength();
        }

        @Override
        public boolean isIdempotent() {
            // Return false as the id might be different because of the idx that is encoded into it.
            return false;
        }
    }