fix: warn about mixed H264 stream modes (#843)

server/service/stream/direct/h264.go

@@ -1,6 +1,7 @@
 package direct
 
 import (
+	"NanoKVM-Server/service/stream"
 	"net/http"
 	"time"
 
@@ -36,6 +37,9 @@ func Connect(c *gin.Context) {
 	streamer.addClient(ws)
 	defer streamer.removeClient(ws)
 
+	unregisterMode := stream.RegisterH264Mode(stream.H264ModeDirect)
+	defer unregisterMode()
+
 	for {
 		if _, _, err := ws.NextReader(); err != nil {
 			log.Debugf("failed to read message (client disconnected): %s", err)

server/service/stream/direct/streamer.go

@@ -152,6 +152,7 @@ func (s *Streamer) send(clients []*websocket.Conn, isKeyFrame byte, timestamp in
 			log.Errorf("failed to write message to client %s: %s.", client.RemoteAddr(), err)
 
 			s.removeClient(client)
+			_ = client.Close()
 		}
 	}