=tcp #15766: Workaround for Windows to detect TCP abort

(cherry picked from commit 9340215)

akka-actor/src/main/scala/akka/io/TcpConnection.scala

@@ -55,6 +55,7 @@ private[io] abstract class TcpConnection(val tcp: TcpExt, val channel: SocketCha
       if (TraceLogging) log.debug("[{}] registered as connection handler", handler)
 
       val info = ConnectionInfo(registration, handler, keepOpenOnPeerClosed, useResumeWriting)
+
       // if we have resumed reading from pullMode while waiting for Register then register OP_READ interest
       if (pullMode && !readingSuspended) resumeReading(info)
       doRead(info, None) // immediately try reading, pullMode is handled by readingSuspended
@@ -186,6 +187,10 @@ private[io] abstract class TcpConnection(val tcp: TcpExt, val channel: SocketCha
       channel.socket.getLocalSocketAddress.asInstanceOf[InetSocketAddress])
 
     context.setReceiveTimeout(RegisterTimeout)
+
+    // !!WARNING!! The line below is needed to make Windows notify us about aborted connections, see #15766
+    if (WindowsConnectionAbortWorkaroundEnabled) registration.enableInterest(OP_CONNECT)
+
     context.become(waitingForRegistration(registration, commander))
   }