列出发布/订阅订阅使用者 [英] Listing the Pub/Sub subscription consumers

问题描述

服务可能对发布/订阅进行长时间轮询.显然，这需要在发布/订阅服务和客户端之间不断打开TCP连接.有什么方法可以确定某个订阅是否打开了该TCP连接?

It is possible for a service to do long polling on a pub/sub subscription. That obviously requires a TCP connection to be constantly open between the pub/sub service and the client. Is there any way to find out if a certain subscription has that TCP connection open?

推荐答案

没有办法列出所有订阅发布/订阅的使用者.这很困难，因为存在三种不同类型的订阅者:推送，拉和

There is no way to list all consumers for a Pub/Sub subscription, no. This would be tough as there are three different types of subscribers: push, pull, and streaming pull. Only the last one maintains an open connection to the server.

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