Still have some error I get after migrating to ver...

# ktor

[Tobias Gronbach]

Still have some error I get after migrating to version 2.0.0-beta-1 that I do not understand (Ktor-Client).

If I try to execute the following code:

override suspend fun authenticateUser(userNameHash: String, passwordHash: String): UserAuthData? {
        return try {
            <http://client.post|client.post>(HttpRoutes.AUTHENTICATE_USER_FQDN) {
                contentType(ContentType.Application.Json)
                setBody {
                    UserRegistrationData(
                        userNameHash = userNameHash,
                        passwordHash = passwordHash
                    )
                }
            }.body<UserAuthData>()
        } catch (e: Exception) {
 ...
           }
    }

Data Class looks like this:

@kotlinx.serialization.Serializable
data class UserRegistrationData(
    val userNameHash: String,
    val passwordHash: String
)

HttpClient

HttpClient(Android) {
....
        install(ContentNegotiation) {
                json(Json {
                    ignoreUnknownKeys = true
                    isLenient = true
                }
                )
            }
....
}

Dependencies (for serialization)

implementation("io.ktor:ktor-client-content-negotiation:$ktor_version")
implementation("io.ktor:ktor-serialization-kotlinx-json:$ktor_version")

Error Message:

Line: 58, Method: authenticateUser: Serializer for class 'null' is not found.
Mark the class as @Serializable or provide the serializer explicitly.

[Sam]

Is setBody supposed to be taking a lambda argument?

[Sam]

I would have expected

setBody(UserRegistrationData(
    userNameHash = userNameHash,
    passwordHash = passwordHash
))

[Sam]

Probably it's trying to serialize the lambda function, hence the error

[Tobias Gronbach]

Thanks Sam! That solved my issue! I appreciate your time and help!! 👌😀