From 22730746eb5242fa71de34f35898c031e7a565de Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Fri, 25 Mar 2016 01:39:49 -0400
Subject: [PATCH] ipv6 update

---
 .../HttpClientManager/HttpClientManager.cs    | 19 +++++++++++++++++++
 MediaBrowser.Common/Net/HttpRequestOptions.cs |  1 +
 .../Connect/ConnectEntryPoint.cs              |  4 +++-
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/MediaBrowser.Common.Implementations/HttpClientManager/HttpClientManager.cs b/MediaBrowser.Common.Implementations/HttpClientManager/HttpClientManager.cs
index c30cdf1a73..f9dbd766f8 100644
--- a/MediaBrowser.Common.Implementations/HttpClientManager/HttpClientManager.cs
+++ b/MediaBrowser.Common.Implementations/HttpClientManager/HttpClientManager.cs
@@ -126,6 +126,23 @@ namespace MediaBrowser.Common.Implementations.HttpClientManager
             }
         }
 
+        private void AddIpv4Option(HttpWebRequest request, HttpRequestOptions options)
+        {
+            if (!options.PreferIpv4)
+            {
+                return;
+            }
+
+            request.ServicePoint.BindIPEndPointDelegate = (servicePount, remoteEndPoint, retryCount) =>
+            {
+                if (remoteEndPoint.AddressFamily == AddressFamily.InterNetwork)
+                {
+                    return new IPEndPoint(IPAddress.Any, 0);
+                }
+                throw new InvalidOperationException("no IPv4 address");
+            };
+        }
+
         private WebRequest GetRequest(HttpRequestOptions options, string method, bool enableHttpCompression)
         {
             var request = CreateWebRequest(options.Url);
@@ -133,6 +150,8 @@ namespace MediaBrowser.Common.Implementations.HttpClientManager
 
             if (httpWebRequest != null)
             {
+                AddIpv4Option(httpWebRequest, options);
+
                 AddRequestHeaders(httpWebRequest, options);
 
                 httpWebRequest.AutomaticDecompression = enableHttpCompression ? DecompressionMethods.Deflate : DecompressionMethods.None;
diff --git a/MediaBrowser.Common/Net/HttpRequestOptions.cs b/MediaBrowser.Common/Net/HttpRequestOptions.cs
index 8c1f63e534..75368a5fc3 100644
--- a/MediaBrowser.Common/Net/HttpRequestOptions.cs
+++ b/MediaBrowser.Common/Net/HttpRequestOptions.cs
@@ -96,6 +96,7 @@ namespace MediaBrowser.Common.Net
         public TimeSpan CacheLength { get; set; }
 
         public int TimeoutMs { get; set; }
+        public bool PreferIpv4 { get; set; }
 
         private string GetHeaderValue(string name)
         {
diff --git a/MediaBrowser.Server.Implementations/Connect/ConnectEntryPoint.cs b/MediaBrowser.Server.Implementations/Connect/ConnectEntryPoint.cs
index 12de5f6ef1..9462674c30 100644
--- a/MediaBrowser.Server.Implementations/Connect/ConnectEntryPoint.cs
+++ b/MediaBrowser.Server.Implementations/Connect/ConnectEntryPoint.cs
@@ -70,7 +70,9 @@ namespace MediaBrowser.Server.Implementations.Connect
                         LogErrors = logErrors,
 
                         // Seeing block length errors with our server
-                        EnableHttpCompression = false
+                        EnableHttpCompression = false,
+
+                        PreferIpv4 = true
 
                     }).ConfigureAwait(false))
                     {