libnmdc compatibility fixes (now requires 0.17++)

--HG--
branch : nmdc-ircfrontend

server.go

@@ -75,6 +75,7 @@ type Server struct {
 
 	upstreamLauncher libnmdc.HubConnectionOptions
 	upstreamCloser   chan struct{}
+	upstreamEvents   chan libnmdc.HubEvent
 	upstream         *libnmdc.HubConnection
 
 	verbose  bool
@@ -99,9 +100,10 @@ func NewServer(name string, upstream libnmdc.HubAddress, conn net.Conn) *Server
 		motd:        "Connected to " + name + ". You /must/ join " + BLESSED_CHANNEL + " to continue.",
 		upstreamLauncher: libnmdc.HubConnectionOptions{
 			Address:           upstream,
-			Self:              *self,
+			Self:              self,
 			SkipAutoReconnect: true,
 		},
+		upstreamEvents: make(chan libnmdc.HubEvent, 0), // unbuffered
 		upstreamCloser: make(chan struct{}, 1),
 		quirks:         DefaultQuirks(),
 	}
@@ -255,7 +257,7 @@ func (s *Server) upstreamWorker() {
 			s.upstream.Disconnect()
 			return
 
-		case hubEvent := <-s.upstream.OnEvent:
+		case hubEvent := <-s.upstreamEvents:
 			switch hubEvent.EventType {
 			case libnmdc.EVENT_USER_JOINED:
 				s.reply(rplJoin, hubEvent.Nick, BLESSED_CHANNEL)
@@ -537,7 +539,7 @@ func (s *Server) maybeStartUpstream() {
 		s.reply(rplJoin, s.clientNick(), BLESSED_CHANNEL)
 
 		// Spawn upstream connection
-		s.upstream = s.upstreamLauncher.Connect()
+		s.upstream = libnmdc.ConnectAsync(&s.upstreamLauncher, s.upstreamEvents)
 		go s.upstreamWorker()
 
 	} else {