private async Task <AssociationHandle> StartClient(Address remoteAddress)
{
if (InternalTransport != TransportMode.Tcp)
{
throw new NotSupportedException("Currently Akka.Streams server supports only TCP transport mode.");
}
var addressFamily = Settings.DnsUseIpv6 ? AddressFamily.InterNetworkV6 : AddressFamily.InterNetwork;
var socketAddress = RemotingAddressHelpers.AddressToSocketAddress(remoteAddress);
socketAddress = await MapEndpointAsync(socketAddress).ConfigureAwait(false);
// TODO: socket options
var clientSource = System.TcpStream().OutgoingConnection(socketAddress, connectionTimeout: Settings.ConnectTimeout)
.AddAttributes(ActorAttributes.CreateDispatcher(System.Settings.Config.GetString("akka.remote.use-dispatcher")));
var joined = clientSource.JoinMaterialized(
StreamTransportFlows.OutboundConnectionHandler(this, remoteAddress, socketAddress), (connectTask, associate) => (connectTask, associate))
.Join(Flow.Create <Google.Protobuf.ByteString>().Where(_ => true))
.Run(StreamMaterializer);
await joined.connectTask.ConfigureAwait(false);
return(await joined.associate.ConfigureAwait(false));
}
public override void PreStart()
{
// keep going even if the upstream is finished
// so we can process the queued elements
SetKeepGoing(true);
// Request the first element
Pull(_sink.In);
var localAddress = RemotingAddressHelpers.MapSocketToAddress((IPEndPoint)_sink._localAddress,
_sink._transport.SchemeIdentifier, _sink._transport.System.Name,
_sink._transport.Settings.Hostname);
if (localAddress != null)
{
var cb = GetAsyncCallback <IHandleEventListener>(SetListener);
var handle = CreateAssociationHandle(_sink._transport, _sink._sourceRef, localAddress,
_sink._remoteAddress);
handle.ReadHandlerSource.Task.ContinueWith(tr =>
{
cb(tr.Result); // safely marshall back into the stage
}, TaskContinuationOptions.ExecuteSynchronously | TaskContinuationOptions.NotOnCanceled | TaskContinuationOptions.NotOnFaulted);
}
else
{
_sink._transport.System.Stop(_sink._sourceRef);
FailStage(new InvalidAssociationException($"Unable to parse [{_sink._localAddress}] into Akka.NET address."));
}
}
