* Dubbo version:  3.2.4

use tri protocol， it has this exception when service run many days，it can not resolve itself，we must restart the service
基本跑几天会出来，然后一直报错无法恢复，目前只能自动重启或者手动重启重连

the problem maybe is not reuse the （unary mode） stream
初步怀疑是unary的stream复用问题

*/
    String ACCEPTS_KEY = "accepts";
    int DEFAULT_ACCEPTS = 0;
    String CONNECT_QUEUE_CAPACITY = "connect.queue.capacity";
    String CONNECT_QUEUE_WARNING_SIZE = "connect.queue.warning.size";
    int DEFAULT_CONNECT_QUEUE_WARNING_SIZE = 1000;
    String CHARSET_KEY = "charset";
    String DEFAULT_CHARSET = "UTF-8";
    /**
     * Every heartbeat duration / HEARTBEAT_CHECK_TICK, check if a heartbeat should be sent. Every heartbeat timeout
     * duration / HEARTBEAT_CHECK_TICK, check if a connection should be closed on server side, and if reconnect on
     * client side
     */
    int HEARTBEAT_CHECK_TICK = 3;
    /**
     * the least heartbeat during is 1000 ms.
     */
    long LEAST_HEARTBEAT_DURATION = 1000;
    /**
     * the least reconnect during is 60000 ms.
     */
    long LEAST_RECONNECT_DURATION = 60000;
    String LEAST_RECONNECT_DURATION_KEY = "dubbo.application.least-reconnect-duration";
    /**
     * ticks per wheel.
     */
    int TICKS_PER_WHEEL = 128;
    String PAYLOAD_KEY = "payload";
    /**
     * 8M