Send the last metadata info to new listeners.

app/channels/channel.go

@@ -17,6 +17,8 @@ type Channel struct {
 	OutputStreams    map[string]*media.MediaStream
 
 	Events *pubsub.PubSub
+
+	lastMetadata map[string]string
 }
 
 func (channel *Channel) AddInputStream(id string) *media.MediaStream {
@@ -50,6 +52,7 @@ func (channel *Channel) AddOutputContainer(id string) *media.MediaStreamContaine
 }
 
 func (channel *Channel) SetMetadata(data map[string]string) {
+	channel.lastMetadata = data
 	channel.Events.Pub(data, "metadata")
 }
 
@@ -57,6 +60,9 @@ func (channel *Channel) Metadata() chan map[string]string {
 	outC := make(chan map[string]string)
 	go func() {
 		defer close(outC)
+		if channel.lastMetadata != nil {
+			outC <- channel.lastMetadata
+		}
 		c := channel.Events.Sub("metadata")
 	forloop:
 		for event := range c {

app/servers/http/server.go

@@ -21,6 +21,9 @@ func NewServer() *Server {
 		Router: gin.New(),
 	}
 
+	server.Router.Use(gin.Logger())
+	server.Router.Use(gin.Recovery())
+
 	server.Http.Handler = server.Router
 	server.Http.Addr = ":8000"