Fix Range handling

In RTSP/1.0, don't return any range (as far as I understand).
In RTSP/2.0, we'd have to compute the time from the beginning.

modules/stream_out/rtsp.c

@@ -619,6 +619,14 @@ static int RtspHandler( rtsp_stream_t *rtsp, rtsp_stream_id_t *id,
             rtsp_session_t *ses;
             answer->i_status = 200;
 
+            psz_session = httpd_MsgGet( query, "Session" );
+            const char *range = httpd_MsgGet (query, "Range");
+            if (range && strncmp (range, "npt=", 4))
+            {
+                answer->i_status = 501;
+                break;
+            }
+
             vlc_mutex_lock( &rtsp->lock );
             ses = RtspClientGet( rtsp, psz_session );
             if( ses != NULL )
@@ -652,7 +660,6 @@ static int RtspHandler( rtsp_stream_t *rtsp, rtsp_stream_id_t *id,
             }
             vlc_mutex_unlock( &rtsp->lock );
 
-            httpd_MsgAdd( answer, "Range", "npt=now-" );
             if( httpd_MsgGet( query, "Scale" ) != NULL )
                 httpd_MsgAdd( answer, "Scale", "1." );
             break;