Actually i got very similar output when i use throw cancellationException or channel.cancel(). The working both similar close channel and cancel the receiving side .what the difference can any one explain . so that anyone understand

Code

suspend fun  hello(){
    val channel  = Channel<Int>()
    val sender = CoroutineScope(Dispatchers.Default).launch {
            try{
                 for (i in 1..6){
                     if(this.isActive){
                         println("sending $i")
                         channel.send(i)
                     }
                 }
            }catch (e : Exception){
                println("exception is caught in send side $e")
            }
    }
    sender.invokeOnCompletion { it ->
        if(it == null){
            println("sender complete successfully")
        }
        else if(it == CancellationException()){
            println("sender was cancelled")
        }
        else {
            println("sender failed")
        }

    }

    val recieve = CoroutineScope(Dispatchers.Default).launch {
        try {
            channel.consume {
                for (i in this) {
                    if(coroutineContext.isActive){
                        if(i == 2){
                          // channel.cancel()
                            throw CancellationException()
                        }
                        println("received $i")
                    }
                }
            }
        }catch(ex : Exception){
            println("exception is caught in receive side $ex")
        }
    }


    channel.invokeOnClose {
        println("channel has closed do some clean up")
    }

    recieve.invokeOnCompletion {
        if(it == null){
            println("receiver complete successfully")
        }
        else if(it == CancellationException()){
            println("receiver was cancelled")
        }
        else{
            println("receiver failed")
        }
    }

    sender.join()
    recieve.join()

}

Output when i cancel()

sending 1
sending 2
received 1
sending 3
channel has closed do some clean up
received 2
exception is caught in send side java.util.concurrent.CancellationException: Channel was cancelled
sender complete successfully
exception is caught in receive side java.util.concurrent.CancellationException: Channel was cancelled
receiver complete successfully

I get Output when i use throw Cancellation Exception

sending 1
sending 2
received 1
sending 3
channel has closed do some clean up
exception is caught in receive side java.util.concurrent.CancellationException
exception is caught in send side java.util.concurrent.CancellationException
receiver complete successfully
sender complete successfully