说明

官方网文档:https://docs.cometd.org/current5/reference/#_java_oort

原理就是,各个服务端,定义了一个客户端,伪装成正常连接 与server建立websocket链接,并订阅指定channel消息,这个客户端就是oort,server收到消息就会转发给oort客户端,oort客户端再广播出去

这里我们主要看OortStaticConfigServlet静态初始化

基本配置

server1

  <servlet>
    <servlet-name>oort</servlet-name>
    <servlet-class>org.cometd.oort.OortStaticConfigServlet</servlet-class>
    <!--当前及诶单服务的ip端口，客户端需要链接到当前节点-->
    <init-param>
      <param-name>oort.url</param-name>
      <param-value>http://localhost:8081/cometd-demo-5.0.13-SNAPSHOT/cometd</param-value>
    </init-param>
    <!--内部维护的其他集群节点信息-->
    <init-param>
      <param-name>oort.cloud</param-name>
      <param-value>http://localhost:8082/cometd-demo-5.0.13-SNAPSHOT/cometd</param-value>
    </init-param>
 
   <!--需要转发的channal消息->
    <init-param>
      <param-name>oort.channels</param-name>
      <param-value>/chat/*,/members/*</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>

server2

  <servlet>
    <servlet-name>oort</servlet-name>
    <servlet-class>org.cometd.oort.OortStaticConfigServlet</servlet-class>
    <init-param>
      <param-name>oort.url</param-name>
      <param-value>http://localhost:8082/cometd-demo-5.0.13-SNAPSHOT/cometd</param-value>
    </init-param>
    <init-param>
      <param-name>oort.cloud</param-name>
      <param-value>http://localhost:8081/cometd-demo-5.0.13-SNAPSHOT/cometd</param-value>
    </init-param>
    <init-param>
      <param-name>oort.channels</param-name>
      <param-value>/chat/*,/members/*</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>

<1>