修复太多打开的文件异常(我正在使用try-catch-finally)

Question

我有在JAVA(版本1.8)上编写的Web服务,它连接HSM并通过套接字发送/接收数据.我的应用程序部署在Apache Tomcat/8.5.14上面linux.

虽然我正在关闭套接字连接,但我有

java.net.SocketException:打开的文件太多

这是myclass

public class myClass implements AutoCloseable {
    Socket socket;
    DataInputStream in;
    DataOutputStream out;

    public myClass(String ip, int port) throws Exception {
        try {
            socket = new Socket(ip, port);
            in = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
            out = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
        } catch (IOException e) {
            throw new Exception("Connecting to HSM failed" + e);
        }
    }       

   public String sendCommandToHsm(String command) throws IOException {
        out.writeUTF(command);
        out.flush();
        return in.readUTF();
    }

    @Override
    public void close() {
        if (socket != null && !socket.isClosed()) {
            try {
                socket.close();
            } catch (IOException e) {
                lgg.info("Closing of socket failed", e);
            }
        }

        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
                lgg.info("Closing of inputStream failed", e);
            }
        }

        if (out != null) {
            try {
                out.close();
            } catch (IOException e) {
                lgg.info("Closing of outputStream failed", e);
            }
        }
    }

}

这是我班上的用法

try (MyClass myClass = new MyClass(ip, port);) {
      myClass.sendCommandToHsm("my command");
 }

我将服务器上的最大打开文件限制从默认值(1024)增加到8192,之后几次Exception再次发生同样的情况.

我正在考虑创作Socket Connection Pool,这是个好主意吗？

你能建议其他解决方案吗？