How does one post an object via `HttpClient` that ...

# ktor

[darkmoon_uk]

How does one post an object via HttpClient that should be Json Encoded? Using iOS, if that matters, and I have the JsonFeature installed... but I get kotlin.ClassCastException: example.model.Person cannot be cast to io.ktor.client.call.HttpClientCall. Here's my code:

runBlocking {
            val client = HttpClient()

            val message = <http://client.post|client.post><Person> { //(path = "/path") {
                url("<http://localhost:8080/path>")
                contentType(ContentType.Application.Json)
                body = Person("James", "Smith")
            }
        }

...Person is @Serializable, should I not be setting it to the body of the post request like this? I assumed that, being Any, JsonFeature would know how to handle this? Can't find an example or details in ktor documentation.

[Mike Dawson]

Kind new here too... but how did you install the JsonFeature? Did you try

val client = HttpClient() {
   install(JsonFeature)
}

Though there isn't a specific example for iOS, there is an example of setting a request body on a post request here:

https://ktor.io/clients/http-client/call/requests.html

Also, the code you shared seems to indicate you are expected a person as the response given by the server, so ktor would be trying to convert the response of the server to a Person. If the response of the server isn't a person, then that could cause a problem.