src/main/java/com/alipay/remoting/Connection.java
private void init() {
        this.channel.attr(HEARTBEAT_COUNT).set(new Integer(0));
        this.channel.attr(PROTOCOL).set(this.protocolCode);
        this.channel.attr(VERSION).set(this.version);
        this.channel.attr(HEARTBEAT_SWITCH).set(true);
    }
private void init() {
        this.channel.attr(HEARTBEAT_COUNT).set(new Integer(0));
        this.channel.attr(PROTOCOL).set(this.protocolCode);
        this.channel.attr(VERSION).set(this.version);
        this.channel.attr(HEARTBEAT_SWITCH).set(true);
    }
Initialization.