import kotlinx.coroutines.*
import java.net.URL

suspend fun test1() = coroutineScope {
    val url = "https://httpbin.org/get"
    val d1 = async(Dispatchers.IO) {
        URL(url).openStream().readBytes()
    }
    val d2 = async(Dispatchers.IO) {
        URL(url).openStream().readBytes()
    }
    println("d1=${d1.await().size}, d2=${d2.await().size}")
}

suspend fun loadUrl(url: String) = withContext(Dispatchers.IO) {
    URL(url).openStream().readBytes()
}

suspend fun test2() = coroutineScope {
    val url = "https://httpbin.org/get"
    val d1 = async { loadUrl(url) }
    val d2 = async { loadUrl(url) }
    println("d1=${d1.await().size}, d2=${d2.await().size}")
}


fun main() = runBlocking<Unit> {
    GlobalScope.launch(Dispatchers.Default) {
        test1()
        test2()
    }.join()
}