From fabb4f4c9559bbc0f6bee9b28a2cdd2e60318786 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Mon, 4 May 2015 13:56:39 -0400
Subject: [PATCH] avoid responding to self messages

---
 MediaBrowser.Dlna/Ssdp/SsdpHandler.cs | 43 +++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/MediaBrowser.Dlna/Ssdp/SsdpHandler.cs b/MediaBrowser.Dlna/Ssdp/SsdpHandler.cs
index 6159b18f0f..28ea5ad6c9 100644
--- a/MediaBrowser.Dlna/Ssdp/SsdpHandler.cs
+++ b/MediaBrowser.Dlna/Ssdp/SsdpHandler.cs
@@ -333,6 +333,11 @@ namespace MediaBrowser.Dlna.Ssdp
                 var args = SsdpHelper.ParseSsdpResponse(received);
                 args.EndPoint = endpoint;
 
+                if (IsSelfNotification(args))
+                {
+                    return;
+                }
+
                 if (enableDebugLogging)
                 {
                     var headerTexts = args.Headers.Select(i => string.Format("{0}={1}", i.Key, i.Value));
@@ -354,6 +359,44 @@ namespace MediaBrowser.Dlna.Ssdp
             }
         }
 
+        internal bool IsSelfNotification(SsdpMessageEventArgs args)
+        {
+            // Avoid responding to self search messages
+            //string serverId;
+            //if (args.Headers.TryGetValue("X-EMBYSERVERID", out serverId) &&
+            //    string.Equals(serverId, _appHost.SystemId, StringComparison.OrdinalIgnoreCase))
+            //{
+            //    return true;
+            //}
+
+            string server;
+            args.Headers.TryGetValue("SERVER", out server);
+
+            if (string.Equals(server, _serverSignature, StringComparison.OrdinalIgnoreCase))
+            {
+                return true;
+            }
+            return false;
+            //string usn;
+            //args.Headers.TryGetValue("USN", out usn);
+
+            //if (string.IsNullOrWhiteSpace(usn))
+            //{
+            //    return false;
+            //}
+
+            //_logger.Debug("IsSelfNotification test: " + usn);
+
+            //return RegisteredDevices.Any(i =>
+            //{
+            //    var isSameDevice = string.Equals(usn, i.USN, StringComparison.OrdinalIgnoreCase) ||
+            //           i.USN.IndexOf(usn, StringComparison.OrdinalIgnoreCase) != 1 ||
+            //           usn.IndexOf(i.USN, StringComparison.OrdinalIgnoreCase) != 1;
+
+            //    return isSameDevice;
+            //});
+        }
+
         public void Dispose()
         {
             _config.NamedConfigurationUpdated -= _config_ConfigurationUpdated;