Ktor: IllegalArgumentException: Neither port nor sslPort specified.

[imGurpreetSK]

For Ktor 1.0.0 server, java version 1.8.0_181 (running server on localhost, Ubuntu 18.04.1 LTS)

Facing the following issue:

Exception in thread "main" java.lang.IllegalArgumentException: Neither port nor sslPort specified. Use command line options -port/-sslPort or configure connectors in application.conf
    at io.ktor.server.engine.CommandLineKt$commandLineEnvironment$environment$1.invoke(CommandLine.kt:121)
    at io.ktor.server.engine.CommandLineKt$commandLineEnvironment$environment$1.invoke(CommandLine.kt)
    at io.ktor.server.engine.ApplicationEngineEnvironmentBuilder.build(ApplicationEngineEnvironment.kt:95)
    at io.ktor.server.engine.ApplicationEngineEnvironmentKt.applicationEngineEnvironment(ApplicationEngineEnvironment.kt:40)
    at io.ktor.server.engine.CommandLineKt.commandLineEnvironment(CommandLine.kt:50)
    at io.ktor.server.netty.EngineMain.main(EngineMain.kt:16)
    at com.gurpreetsk.ApplicationKt.main(Application.kt:36)

However, the application.conf file contains the following:

ktor {
  deployment {
    port = 8080
    port = ${?PORT}
  }
  application {
    modules = [ com.gurpreetsk.ApplicationKt.module ]
  }
}

[cy6erGn0m]

Most likely application.conf is not in the classpath

[imGurpreetSK]

How do I add it to the classpath? It is not working of a new ktor project either.

[cy6erGn0m]

Is it placed in a resources source root?

[imGurpreetSK]

Yes. Attaching project structure screenshot along-with:

[cy6erGn0m]

That's quite strange that you have orange test and out directories. For sure something is misconfigured.

application.conf should be in out directory, like this:

I've just tried to create a project using ktor plugin and it runs just fine in IDEA and via gradle as well. Same for website https://start.ktor.io

[imGurpreetSK]

Let me try and update here in some time if I solve this.

[cy6erGn0m]

Have you resolved the issue?

[imGurpreetSK]

No. I still can't figure out what's wrong. However, it seems like a machine issue (wrong PATH or something) as the project runs fine on my other machine.

[AlexTver]

Hello.
I just update IDEA and ktor plugin and get same issue.
It's my old good working small feature testing project

ktor 1.0.0, Win7 64

[yanghengyh]

I also encountered the same problem. totally do not understand.

[piritus]

There was the same problem after the update of the IDE, it helped "Sync Project with Gradle Files"