Method readFully

src/main/java/org/example/Socks5Server.java:265–271

(SocketChannel channel, ByteBuffer buffer)

    }

    private void readFully(SocketChannel channel, ByteBuffer buffer) throws IOException {
        while (buffer.hasRemaining()) {
            if (channel.read(buffer) == -1) {
                throw new IOException("连接已关闭");
            }
        }
    }

    private void writeFully(SocketChannel channel, ByteBuffer buffer) throws IOException {
        while (buffer.hasRemaining()) {