Hey guys, I have avatar folder, for each user i create a folder with his unique username /users/{username} ^ external folder Inside that folder I have avatar.jpg When I access the image via serverUrl/users/admin/avatar.jpg It says that the image cannot be displayed. How do I set this up for each user?

Maybe I am overlooking things, but i want to make a simple request using the Ktor Client in JS to https://xkcd.com/info.0.json However, the xkcd server doesn't have CORS enabled and as such Chrome is blocking it. But I can't find how to set

mode

to

no-cors

for Ktor Client in JS.

Below are my initial impressions on the Native version of Ktor Server (for the linuxX64 target): 1. Web server starts up extremely quickly (0.0s) 😆 2. After exiting an application using Ktor Server (via Ctrl+c) there is a long delay before the address is freed ☹️ 3. Missing documentation on the dependencies that the Native version of Ktor Server uses (C libs used, what libs are statically/dynamically linked, linker/compiler options used etc) 4. All the text streams (stdout, stderr and stdin) are hijacked by the Web Engine, which makes it impossible to do process forking 5. The learning curve of the Native version of Ktor Server (no manual linking 🎉) is at a similar level to the JVM version 😄 6. Missing Ktor Server versions for the Kotlin Native Linux ARM targets 7. There are some cases where a response from the server should be in a completed state, but ends up in an infinite loop scenario (aka the web page on the client side is taking forever to load) 8. Low memory usage around 8.8 MB for a Hello World type application

Hi Can anyone tell me how to include a dir inside the project root dir into ShadowJar plugin's resultant jar file. For example i want to include credentials dir in final output jar, following code does not work

tasks {
    named<ShadowJar>("shadowJar") {
         include("credentials/")
        exclude("department_images/")
        exclude("json/")
        exclude("question_images/")

    }
}

We’ve been using

defaultRequest { }

to configure the base URL for our backend, like https://backend.com , then do things like

get("users")

. If the base url has a segment though, like https://backend.com/v1 . v1 is ignored in

get("users")

will still hit https://backend.com/users. I kind of get why this happens but is there any way to make it work?

Is it possible for community ktor plugins to get listed in the ktor project wizard?

hi! i am currently updating to ktor2 and i am moving from the location API to the resource API. in my URL parameters i used to have a parameter defined like this val format: ImportFormat = ImportFormat.NDJSONLD (where import format is an enum). it was possible to omit the enum parameter in the location API and it just took the default value. now i get the exception Can't transform call to resource with an underlying NPE. any ideas?

heyhey, I am trying to create a Ktor server plugin where I want to set a custom coroutine context (

withContext

), that should be used when handling requests. (I want to create an active span with opentelemetry-extension-kotlin that is tied to the coroutine context). Looking through the examples I can only see before and after hooks, but nothing like an around interceptor. Any ideas?

Hi, I’m currently upgrading my project to ktor2. I use [

CachingHeader

plugin](https://ktor.io/docs/caching.html), and

CachingOptions

(io.ktor.server.http.content) class shows compile errors because it became to need

expires

parameter (non nullable). As I know, If we want to return

Cache-Control: no-cache

as http response, then

expires

header is not required. Why is this parameter required?

i am seeing a strange issue with ktor 2.0.2 (does not happen in 2.0.1). i have an endpoint which returns a pretty printed json (call.respond(thePrettyString)) and i debug it to the console before sending it and it looks fine ... then in the test i do testApplication { client.get("/json").bodyAsText() } ... and write it to the console .. and suddenly it looks like this

"{\r\n  \"swagger\" : \"2.0\",\r\n  \"info\" : {\r\n    \"description\" : \"Talks to AD and handles permissions\",\r\n

Can I ask what is the point of having ApplicationConfiguration and ApplicationConfigurationValue wrappers around typesafe objects? They remove access to several other data types, and also to any mechanism of introspection. If I have, for instance, a tier library which expects a Map for its configuration, and if I want to configure it from its own section in application.conf, then I have to do it manually, key/value by key/value... If I want later to add a new configuration parameter, then I'll have to add it both in application.conf and in the conf... My opinion is that having some sort of coercion around configuration types is constructive, but as soon as it has the side effect of adding redundancy somewhere else in the code, it's gone too far. Right now, I think I'm gonna parse a second time the application.conf to get a json out of it, not that I like it but ApplicationConfiguration objects have close the door to every generic configuration handling.

I'm getting this error

java.lang.NoSuchMethodError: io.ktor.client.request.HttpRequestKt.url$default(Lio/ktor/client/request/HttpRequestBuilder;Ljava/lang/String;Ljava/lang/String;ILjava/lang/String;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)V

when using Ktor client 2.0.1. What could be the problem?

Hey everyone, Is this supposed to result in a graceful shutdown? Similar to if I would've called

ApplicationEngine#stop

? Currently, I am seeing all open requests result in

CancellationException

.

2022-06-02 20:52:27.779 [eventLoopGroupProxy-4-3] DEBUG ktor.application - 500 Internal Server Error: GET - /health. Exception class kotlinx.coroutines.JobCancellationException: LazyStandaloneCoroutine was cancelled

I'm trying to use CIO and I'm just getting around to running my iOS app. I'm seeing this illegal state exception and I'm wondering if there is a flag I'm missing that will allow me to use it? Should I not use it all until it gets out of the experimental phase?

How does the concurrency side of Ktor Server V2 (the Native version) work? Which C library does the Native version of Ktor Server use to provide the Web Engine (CIO)?

Hello everybody 🙂 is tehre in ktor opportunity to automatically convert data types for

setBody

? I am using list and it throw an error with

Exception in thread "main" kotlin.reflect.jvm.internal.KotlinReflectionInternalError: Function 'create$lambda-0' (JVM signature: create$lambda-0(Lio/ktor/client/request/HttpRequestBuilder;Ldev/inmo/micro_utils/repos/ktor/client/crud/KtorWriteStandardCrudRepoClient;Ljava/util/List;)V) not resolved in class dev.inmo.micro_utils.repos.ktor.client.crud.KtorWriteStandardCrudRepoClient: no members found

. I am using content negotiation and set up application json content type

Since ktor client needs to be closed, is it possible to somehow attach it to the CoroutineScope so that it would close when the scope cancels/completes?

can I use ktor embedded server with h2c (http/2 over cleartext)

My put and post routes that use resources don't get recognized by intellij 🤔

Hei. Are there plans to simplifiy extending HttpClient plugins just like its been done for server plugins. New apis for server plugins are awesome. Would’ve been nice if it were done for the http client too.

Another question that is bugging me. In

ktor-server-call-logging

https://github.com/ktorio/ktor/blob/main/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/callloging/MDCProvider.kt#L12 Here mdc entries are registered in the plugin registry, but I couldn’t find out where they are extracted again back from the plugin registry to be used (they are however used from the pluginConfig, so I don’t see why these are being registered in pluginRegistry). Is this code redundant or is there any magic that I cant see 😅 ?

Hei. Can someone elaborate on the difference between HttpSendPipeline and HttpRequestPipeline ?

[HttpClient] Pipeline used for executing [HttpRequest].

and

[HttpClient] Pipeline used for sending [HttpRequest] to remote server.

is still kind of vague for me.

Hello, everyone. ✋ I implement database connecting process (

Database.connect()

) on the beginning of Ktor’s booting process (the first line of

Application.module()

). When I use Ktor v2, the

testApplication

method creates a Ktor server application on each test method. So, errors happens which says

too many db clients

. How do I solve it? Does anyone know this? 🙏

I'm making a TON of requests to the same host but different paths. Is it worth somehow keeping the client connection open between requests instead of closing and reopening them on each request? If so, how would that be done with ktor-client (looking at code

get("url")

closes the connection after the request is fulfilled).

Hi, can someone help figuring out what is going wrong with this test https://stackoverflow.com/questions/72520472/ktor-testing-fail-to-serialize-body-content-has-type-class-but-outgoingcon Thanks in advance

I had a working implementation of a ktor server application using oauth where the oauth provider was selected based on the url path. I was able to accomplish this using the now deprecated Locations plugin. I’m reading through the source for the newer Resource plugin but I’m having trouble accomplishing the same thing.

@Location("/") class index
@Location("/auth/{type?}") class login(val type: String = "")
@Location("/auth/{type}/callback") class callback(val type: String)

val loginProviders = listOf(
  OAuthServerSettings.OAuth2ServerSettings(..),
  OAuthServerSettings.OAuth2ServerSettings(..)
).associateBy { it.name }

fun Application.module() {
  install(Authentication) {
    oauth("oauth") {
      providerLookup = {
        loginProviders[application.locations.resolve<login>(login::class, this).type]
      }
      urlProvider = { p -> redirectUrl(callback(p.name), false) }
    }
  }
}

This is the gist with a bunch of other stuff left out. The key is begin able to map the url path to the name of the login provider. This ultimately allows a client to select which oauth provider to use. Any help or guidance would be appreciated.

Wanted to share this, perhaps I'm missing/misunderstanding something: I was running a Ktor 2.0

testApplication

test with 100 async calls by a client . However, it started locking up quite quickly and not even sending the remaining calls to the server. At first I thought this problem must be in my service. But in the end it even happened if the service did nothing. I solved it by configuring the CIO engine for the client

val client = createClient {
                engine { CIO }
                install(WebSockets)
            }

(the websockets is there because I needed it..) I was wondering: is this a known thing ? Or is there a different approach that would be preferred?

seeing sporadic a crash when initializing ktor on an iOS client at launch

#0	(null) in kfun:kotlinx.cinterop#<get-cstr>__at__kotlin.String(){}kotlinx.cinterop.CValues<kotlinx.cinterop.ByteVarOf<kotlin.Byte>> ()
#1	(null) in kfun:kotlinx.cinterop#<get-cstr>__at__kotlin.String(){}kotlinx.cinterop.CValues<kotlinx.cinterop.ByteVarOf<kotlin.Byte>> ()
#2	(null) in kfun:io.ktor.utils.io.charsets.CharsetImpl.<init>#internal ()
#3	(null) in kfun:io.ktor.utils.io.charsets.Charsets#<init>(){} ()
#4	(null) in InitSingletonStrict ()
#5	(null) in 0x106780000 ()
#6	(null) in Kotlin_initRuntimeIfNeeded ()
#7	(null) in (anonymous namespace)::workerRoutine(void*) ()
#8	(null) in _pthread_start ()
#9	(null) in thread_start ()

If I want to define resources for routes starting with the same path, I need to put everything in the same class? https://ktor.io/docs/type-safe-routing.html