I'd like to create a cookie when the client makes ...

# ktor

[CLOVIS]

I'd like to create a cookie when the client makes a specific request. If I understand correctly, that means I need to add a Set-Cookie header in the response.

However, call.respond doesn't take a lambda to configure the request, unlike its client-side equivalent. I found call.respondText, which has an override with a lambda with an OutgoingContent receiver, which has a headers attribute, however it seems to be immutable.

How can I add a specific header for a specific request? I don't want that header to be present in other requests.

[Aleksei Tirman [JB]]

You can use ResponseCookies object to append cookies for a response:

routing {
    get("/") {
        call.response.cookies.append("name1", "value")
        call.response.cookies.append("name2", "value")
        call.respond(HttpStatusCode.OK)
    }
}

[CLOVIS]

Oh, that's nice! And it also answers the next question I had because that also works the other way around with call.request.

[CLOVIS]

Thanks a lot, it's a shame that it's never mentioned in the docs about cookies (they only explain sessions)

[duuusha]

hi, you can find how to specify various response parameters (including cookies) in the Set response parameters section:
https://ktor.io/docs/responses.html#cookies

[CLOVIS]

Ah, indeed. It doesn't appear in the table of contents nor in Google results so I couldn't find it.