@Bean
    @ConditionalOnProperty(value = {"shenyu.netty.http.web-server-factory-enabled", "shenyu.netty.http.sni.enabled"}, havingValue = "true")
    public ShenyuSniAsyncMapping shenyuSniAsyncMapping() {
        return new ShenyuSniAsyncMapping();
    }
AsyncMapping for dynamic configure ssl.

@return ShenyuSniAsyncMapping
shenyu-spring-boot-starter/shenyu-spring-boot-starter-gateway/src/main/java/org/apache/shenyu/springboot/starter/netty/ShenyuNettyWebServerConfiguration.java