in ktor-client, is there a way to add headers in a suspended context?

Yes.

suspend fun main() {
    val client = HttpClient(CIO)

    <http://client.post|client.post>("<https://httpbin.org/post>") {
        delay(123)
        header("header", "value")
    }
}

Anyway to do this within `defaultConfig`s?

Considering I don’t know anything about your

loginRepository

implementation, it looks like you could perhaps wrap with

runBlocking

or

runCatching

in this case?

header(X-User-ID, runBlocking{(loginRepository.last().username)}

? Bear in mind that you should take into account the response time from

last()

and also make sure that the response is valid.

@xxfast unfortunately, no.

Made a feature request here