I'm upgrading to ktor 3.x, and I used to programmatically set `developmentMode` inside of `applicati...

# ktor

[Adam Brown]

I'm upgrading to ktor 3.x, and I used to programmatically set developmentMode inside of applicationEngineEnvironment, but that no longer seems to be an option, anyone know how I can do it for ktor 3?

[Aleksei Tirman [JB]]

You can do it by passing an ServerConfig instance to the embeddedServer. Here is an example:

fun Application.module() {
    routing {
        get {
            call.respondText { "okay" }
        }
    }
}

fun main() {
    embeddedServer(
        Netty,
        serverConfig {
            developmentMode = true
            module(Application::module)
         },
        configure = {
            connector { port = 12345 }
        }
    ).start(wait = true)
}

[Aleksei Tirman [JB]]

Also, I've created an issue to update the documentation.

[Adam Brown]

strange, the overload it really wants me to use is this:

public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Configuration> embeddedServer(
    factory: ApplicationEngineFactory<TEngine, TConfiguration>,
    environment: ApplicationEnvironment = applicationEnvironment(),
    configure: TConfiguration.() -> Unit = {},
    module: Application.() -> Unit = {}
): EmbeddedServer<TEngine, TConfiguration> {
    val applicationProperties = serverConfig(environment) {
        module(body = module)
    }
    return embeddedServer(factory, applicationProperties, configure)
}

[Adam Brown]

I also see that some of the overloads that are extensions on CoroutineScope have other arguments that I'd like to use, such as watchPaths which doesn't seem to be present on the non-coroutinescope ones

[Adam Brown]

ah ya so just not passing in the ApplicationEnvironment now gets me to the right overload

[Adam Brown]

thank you