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Hi guys, according to <https://github.com/ktorio/ktor/blob/main/ktor-server/ktor-server-plugins/ktor-server-sse/common/src/io/ktor/server/sse/SSEServerContent.kt>

It says that :
Please note that you generally shouldn't use this object directly but use [SSE] plugin with routing builders [sse] instead.

Can I ask in what cases should we use this object?

custom implementations? Probably this object could change but the routing has stricter api and wont change that often?

To implement a custom logic of responding instead of the <https://github.com/ktorio/ktor/blob/dd70ccb3aaa47b0ee6fc0d2d3836ce4219b1df0b/ktor-server/ktor-server-plugins/ktor-server-sse/common/src/io/ktor/server/sse/Routing.kt#L164-L171|default one>.

<@U017TSBJ2C9>  thank you for responding.
my use case is whenever client does a post request to server the server can open a sse stream but i’m not sure how to achieve this

You can use the tail card route path to achieve that:
```install(SSE)

routing {
    route("{...}", <http://HttpMethod.Post|HttpMethod.Post>) {
        sse {
            while (true) {
                delay(1000)
                send(ServerSentEvent("hello"))
            }
        }
    }
}```

thank you <@U017TSBJ2C9> i’ll try it out and ask if i have more qns

You can find the information about different kinds of route paths in the <https://ktor.io/docs/server-routing.html#match_url|documentation>.

<@U017TSBJ2C9> the example you showed opens one sse session right? How can we open sessions per request

In the example, an SSE session is established for every POST request.

Hi <@U017TSBJ2C9>, suppose I have a client and a server and whenever i make a post request to the server and i open a sse session

1. can i do it like this ?
install(SSE)

routing {
    post("/sse") {
        sse {

            }
        }
    }
}

2. How can the client connect to this session?

1. No, you can't do it like this. You can use <https://kotlinlang.slack.com/archives/C0A974TJ9/p1745311292825859?thread_ts=1745044183.446899&amp;cid=C0A974TJ9|my example above>.
2. You can use the <https://ktor.io/docs/client-server-sent-events.html|SSE client plugin> to do that.

<@U017TSBJ2C9>
1. Thank you
2. suppose the route is /sse so everytime a request is made there a sse session is established, the client should connect to /sse ?

Yes, the client should send the POST request to the `/sse` endpoint

but for listening to sse events where should it connect to or listen to? i suppose it should be the same post endpoint right so /sse

just to clarify client sends request to server via post endpoint and server opens a sse session for each post request

&gt; but for listening to sse events where should it connect to or listen to?
What do you mean?
&gt; just to clarify client sends request to server via post endpoint and server opens a sse session for each post request
Yes

client sends request to server via post endpoint and server opens a sse session for each post request and client should connect to the same post endpoint using SSE client plugin?

Hi <@U017TSBJ2C9> just to clarify

I want to have server open a sse stream whenever client makes a post request however i’m not sure how client is able to connect too that sse stream

Have you tried to use the SSE plugins for both the <https://ktor.io/docs/client-server-sent-events.html|client> and the <https://ktor.io/docs/server-server-sent-events.html|server>?