diff --git a/src/commonMain/kotlin/net/sergeych/kiloparsec/adapter/NetworkProvider.kt b/src/commonMain/kotlin/net/sergeych/kiloparsec/adapter/NetworkProvider.kt
index 9742015..345d1fa 100644
--- a/src/commonMain/kotlin/net/sergeych/kiloparsec/adapter/NetworkProvider.kt
+++ b/src/commonMain/kotlin/net/sergeych/kiloparsec/adapter/NetworkProvider.kt
@@ -15,11 +15,25 @@ interface NetworkAddress {
  * Multiplatform datagram abstraction
  */
 interface Datagram {
+    /**
+     * Received message
+     */
     val message: UByteArray
+
+    /**
+     * Address from where the message was sent
+     */
     val address: NetworkAddress
+
+    /**
+     * Send a datagram in response, e.g., to the [address].
+     * This method is optimized per single per-datagram use. If you need to send many datagram, use [DatagramConnector].
+     */
     suspend fun respondWith(message: UByteArray)
 }
-interface DatagramReceiver {
+
+@OptIn(ExperimentalStdlibApi::class)
+interface DatagramConnector: AutoCloseable {
 
     val incoming: ReceiveChannel<Datagram>
     suspend fun send(message: UByteArray, networkAddress: NetworkAddress)
@@ -30,7 +44,7 @@ interface DatagramReceiver {
 
     suspend fun send(message: UByteArray,host: String,port: Int) =
         send(message, NetworkAddress(host,port))
-    fun close()
+    override fun close()
 }
 
 expect fun networkAddressOf(address: String): NetworkAddress