I upgraded to ktor 1.0.1 and now consistently get `java.util.concurrent.CancellationException: Chann...

# ktor

[rocketraman]

I upgraded to ktor 1.0.1 and now consistently get java.util.concurrent.CancellationException: Channel has been cancelled from the ktor client, using CIO, with the same code that used to work with 1.0.0. Anyone else experienced this?

[e5l]

Hi, @rocketraman. It looks like side effect form the bugfix 🙂 Could you provide the example?

[rocketraman]

Example of client-side code?

[rocketraman]

@e5l here is some code that works with 1.0.0 but fails with 1.0.1:

fun main(args: Array<String>) = runBlocking {
  val client = HttpClient(CIO.config { })

  suspend fun <T> download(block: suspend (ByteReadChannel) -> T): T? {
    val byteReadChannel: ByteReadChannel = client.call( "<https://www.google.com>").use {
      it.receive()
    }

    return block(byteReadChannel)
  }

  download {
    it.copyTo(System.out)
  }
  println("\nDone!!")
}

[rocketraman]

Changing the code to do the block inside the call.use works, but is this the intended behavior?

[e5l]

If we close call object, it releases the response data and connection.

[rocketraman]

Ok, so the fact that it worked previously was accidental...

[e5l]

Yep. It was a side effect of the bug.