Hi all, when using websocket client on ktor , how to listen when the connection is closed?

When using ktor client is it recommended to close the client after each request?

Having trouble updating to new Ktor dependencies, getting close by importing from plugins instead of features, but still having trouble installing contentNegotiation and json serialization, even following docs didn't seem to work as described there, :(

Hi all, I’m trying to use ktor 2.0.0-beta-1 to build a native server targeting Linux and Macos. All seems to work well until I try to include

ktor-server-content-negotiation

, then Gradle tells me

No matching variant of io.ktor:ktor-server-content-negotiation:2.0.0-beta-1 was found

. Looking at Maven Central, there doesn’t seem to be native versions of this library. Am I missing something?

Hello, I'm using ktor for Discord Bot stuff. But somehow sending requests sometimes takes over 5s seconds, and I'm not sure what I am doing wrong. I have a picture of a request log in the thread

Hello, does anyone know how to limit open connections with ktor-netty? currently I have a rate limiter but on route level but i’m still opening new connections for every new incoming request

How can I set the allowed upload size to ktor?

Hello, is there a public roadmap for ktor 2.0? Should we expect the final release to be in January or what is the rough timeline?

I don't know if my approach is wrong but I wrote a requester + ratelimiter for http requests but the problems is it is pretty CPU intense on my Raspberryp Pi I get like 100% CPU and on Windows (of course better cpu) also like 10%: https://www.toptal.com/developers/hastebin/vaxayabohi.kotlin

Hello everybody and happy new year :) I wished to aks: is there any way to reduce result application size in JS? Currently I am getting 4 mb project with dce and included coroutines and serialization (and, of course, ktor)

Is there any "compatibility" type mode/option to use existing plugins with Ktor 2.0 or do they have to be migrated first? Am currently using

KGraphQL

(https://github.com/aPureBase/KGraphQL) but get following when updating to use Ktor

2.0.0-beta-1

Type mismatch.
Required:
Plugin<TypeVariable(P), TypeVariable(B), TypeVariable(F)>
Found:
GraphQL.Feature

I'm trying to add a requestId to my application log, and it seems using a combination of slf4j’s MappedDiagnosticContext and ThreadContextElement might do the trick. Does anyone know how I might configure ktor so that I can customize the coroutine context for handling requests? Thanks!

Happy New Year everybody, I have surprising issue (code compiles!) with reified function in Ktor (Kotlin 1.6.10, Ktor 1.6.7, jvmTarget = “1.8”): https://gist.github.com/ikolomiets/689519a10f6f0a289a2ab2c06df710c1

@Serializable
data class Age(val value: Int)

@Serializable
data class Update<T>(val old: T, val new: T)

fun main() {
    embeddedServer(Netty, port = 8080) {
        install(ContentNegotiation) {
            json()
        }
        routing {
            update<Age>()
        }
    }.start(wait = true)
}

inline fun <reified T> Route.update() {
    post("/") {
        val update = call.receive<Update<T>>()
        <http://application.log.info|application.log.info>("XXX update={}", update)
        call.respond(HttpStatusCode.OK, "OK")
    }
}

Trying

% curl -v -H "Content-Type: application/json" -POST <http://localhost:8080/|http://localhost:8080/> -d '{"old":{"value":1},"new":{"value":2}}'

makes Ktor throw:

java.lang.UnsupportedOperationException: This function has a reified type parameter and thus can only be inlined at compilation time, not called directly.

I found similar issue https://youtrack.jetbrains.com/issue/KTOR-582 that was identified as Kotlin compiler’s issue and eventually resolved as Fixed. Could this be regression with Kotlin compiler again? If not, can somebody advise how to avoid this exception? My project really needs such generic

Route.update()

function. Thank you!

Hello, Using the

ktor:2.0.0-beta-1

on Android 5.0 I'm getting a crash:

java.lang.NoSuchMethodError: No virtual method position(I)Ljava/nio/ByteBuffer; in class Ljava/nio/ByteBuffer; or its super classes (declaration of 'java.nio.ByteBuffer' appears in /system/framework/core-libart.jar)
        at io.ktor.utils.io.bits.MemoryJvmKt.sliceSafe(MemoryJvm.kt:212)
        at io.ktor.utils.io.bits.Memory.slice-87lwejk(MemoryJvm.kt:48)

explained here https://jira.mongodb.org/browse/JAVA-2559 Is the ktor 2.0 still compatible with Android 5.0+ or not anymore?

Is there any way to still obtain the

TestApplicationEngine

when using the new

testApplication

API (and is there any link to the 2.0 docs anywhere? I can’t seem to find anything to help navigating the new APIs)

Is there a way to set

cookie.extensions["SameSite"] = "None; Secure"

without the semicolon being escaped in the cookie output?

Why isn't ktor-client using Dispatchers.IO?

Hi folks, I think I found my issue. Thanks for being a sounding board!

Hi, where could we find the doc of ktor 2.0

Previously I built ktor docker images by using the installDist task, but after switching to multiplatform the

lib/<projectname>-<version>.jar

file has disappeared and running fails with an error:

Exception in thread "main" java.lang.IllegalArgumentException: Neither port nor sslPort specified. Use command line options -port/-sslPort or configure connectors in application.conf

I’ve tried reproducing by using the (CIO) ‘full stack web application’ project generator which basically fails with the same error, since it doesn’t use HOCON:

Caused by: java.lang.ClassNotFoundException: com.test.fullstack.application.ServerKt

Hey all, I'm wondering if there is a drop a connection call for a malformed request on ktor server? Like complete drop, I don't even want to send a 404 response back. Is this possible?

Just found this bug in beta-1 (also applies to

appendIfNameAndValueAbsent()

)

public fun StringValuesBuilder.appendIfNameAbsent(name: String, value: String): StringValuesBuilder = apply {
    if (!contains(name)) return@apply
    append(name, value)
}

I think that

if

should be inverted

Hi, when using

install(Logging)

how can we log request and response body

Hi, the below test is throwing

java.lang.IllegalArgumentException: List has more than one element

because there are two values in the Accept header. Removing jackson fixes it, but I was hoping to use the same client for json responses too. Is this possible? I’m using 2.0.0-beta-1.

class AcceptTest {
    private val readmeContentType = ContentType.parse("application/vnd.github.v3.html")

    @Test
    fun acceptTest() {
        val client = HttpClient() {
            install(ContentNegotiation) {
                jackson {  }
            }
        }
        val readme: String = runBlocking {
            client.get("<https://api.github.com/repos/ktorio/ktor/readme>") {
                header(HttpHeaders.Accept, readmeContentType)
            }.body()
        }
        println(readme)
    }
}

Can anyone advise if there is a clean way to get a publisher<bytebuffer> from a ktor call object? I have kotlinx.coroutines.reactive and it can turn a flow into a publisher but I can't find anything for a channel?

What happens to this when it can't connect to the websocket? Does it throw an exeption or something?

socket = http.webSocketSession(
                generateWebsocketURL(
                    config.encoding,
                    config.compression
                )
            ) { timeout { this.connectTimeoutMillis = 5000; this.socketTimeoutMillis = 2 * 60 * 1000 } }

Has anyone tried running a ktor server on android with v2.0? I'm seeing that ktor isn't able to server any incoming requests on my side.

Been trying to make a ktor server but unable to understand why the response is escaping string values like the following

{
  "address": {
    "id": 1,
    "firstname": "\"Rahul\"",
    "lastname": "\"Rawat\"",
    "address1": "\"Address1\"",
    "address2": "\"Address2\"",
    "city": "\"City\"",
    "zipCode": "\"ZipCode\"",
    "phone": "\"80808080\"",
    "state_name": "\"State\"",
    "alternative_phone": "\"Alternative\"",
    "company": "\"Company\"",
    "state_id": 1,
    "country_id": 2
  }
}

My server looks like the following

install(ContentNegotiation) {
            json(Json {
                prettyPrint = true
                isLenient = true
            })
        }

Please someone help.

Is there anyone who knows of a guide on how to build a readiness/liveness endpoint for your ktor application? Is it as simple as configuring a singleton to respond with

200

or

503

?

Minor nuisance still present in ktor 2:

Url

vs

URLBuilder

😕