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kotlinlang

I get an error when trying to post to some website, but I don't really understand that error because it doesn't really give me much information.
Error: (see thread)

`Exception in thread "DefaultDispatcher-worker-5" java.net.BindException: Cannot assign requested address: connect`
	`at <http://sun.nio.ch.Net|sun.nio.ch.Net>.connect0(Native Method)`
	`at <http://sun.nio.ch.Net|sun.nio.ch.Net>.connect(Net.java:482)`
	`at <http://sun.nio.ch.Net|sun.nio.ch.Net>.connect(Net.java:474)`
	`at <http://sun.nio.ch|sun.nio.ch>.SocketChannelImpl.connect(SocketChannelImpl.java:647)`
	`at io.ktor.network.sockets.SocketImpl.connect$ktor_network(SocketImpl.kt:32)`
	`at io.ktor.network.sockets.ConnectUtilsJvmKt.connect(ConnectUtilsJvm.kt:19)`
	`at io.ktor.network.sockets.TcpSocketBuilder.connect(TcpSocketBuilder.kt:38)`
	`at io.ktor.client.engine.cio.ConnectionFactory.connect(ConnectionFactory.kt:24)`
	`at io.ktor.client.engine.cio.Endpoint$connect$2$connect$1.invokeSuspend(Endpoint.kt:184)`
	`at io.ktor.client.engine.cio.Endpoint$connect$2$connect$1.invoke(Endpoint.kt)`
	`at io.ktor.client.engine.cio.Endpoint$connect$2$connect$1.invoke(Endpoint.kt)`
	`at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturnIgnoreTimeout(Undispatched.kt:100)`
	`at kotlinx.coroutines.TimeoutKt.setupTimeout(Timeout.kt:148)`
	`at kotlinx.coroutines.TimeoutKt.withTimeoutOrNull(Timeout.kt:104)`
	`at io.ktor.client.engine.cio.Endpoint.connect(Endpoint.kt:192)`
	`at io.ktor.client.engine.cio.Endpoint.access$connect(Endpoint.kt:28)`
	`at io.ktor.client.engine.cio.Endpoint$makeDedicatedRequest$1.invokeSuspend(Endpoint.kt:105)`
	`at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)`
	`at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)`
	`at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)`
	`at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)`
	`at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)`
	`at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)`

I just tried to use the apache engine instead of jetty and cio, and now I get a different error
Btw code:
```val result = <http://http.post|http.post>&lt;String&gt;("<https://discord.com/api/v9/users/@me/channels>", body = buildJsonObject {
    put("recipient_id", 285418000734093312)
}.toString()) {
    header("Authorization", "")
    header("User-Agent", "")
}
println(result)```
New error:
`Exception in thread "main" io.ktor.client.features.ClientRequestException: Client request(<https://discord.com/api/v9/users/@me/channels://localhost/>) invalid: 404 Not Found. Text: "{"message": "404: Not Found", "code": 0}"`

Why is there a localhost now??

The problem is that first parameter of the `<http://HttpClient.post|HttpClient.post>` overload you use is scheme so it adds `://localhost` to it. Here is a correct way of making a POST request with a body:
```val client = HttpClient(Apache)

val result = <http://client.post|client.post>&lt;String&gt;("<https://discord.com/api/v9/users/@me/channels>") {
    body = buildJsonObject {
        put("recipient_id", 285418000734093312)
    }.toString()

    header("Authorization", "")
    header("User-Agent", "")
}
println(result)```