Middle response headers. Thanks to Azor Ahai.

New property: EnableMiddleHeaders for HttpRequest.
New property: MiddleHeaders for HttpResponse.

Leaf.xNet/~Http/HttpRequest.cs

@@ -253,6 +253,12 @@ public event EventHandler<DownloadProgressChangedEventArgs> DownloadProgressChan
         /// </summary>
         public bool AllowEmptyHeaderValues { get; set; } 
 
+
+        /// <summary>
+        /// Включить отслеживание заголовков в промежуточных запросах (редиректы) и сохранять их в <see cref="HttpResponse.MiddleHeaders"/>.
+        /// </summary>
+        public bool EnableMiddleHeaders { get; set; }
+
         #region Поведение
 
         /// <summary>
@@ -1750,7 +1756,7 @@ private void ReceiveResponseHeaders(HttpMethod method)
             _canReportBytesReceived = false;
 
             _bytesReceived = 0;
-            _totalBytesReceived = Response.LoadResponse(method);
+            _totalBytesReceived = Response.LoadResponse(method, EnableMiddleHeaders);
 
             _canReportBytesReceived = true;
         }

Leaf.xNet/~Http/HttpResponse.cs

@@ -259,6 +259,12 @@ public override void Write(byte[] buffer, int offset, int count)
         private readonly Dictionary<string, string> _headers =
             new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
 
+        // Lazy redirect headers
+        public Dictionary<string, string> MiddleHeaders => _middleHeaders ??
+            (_middleHeaders = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase));
+
+        private Dictionary<string, string> _middleHeaders;
+
 
         private string _loadedMessageBody;
         //private MemoryStream _loadedMessageBody;
@@ -775,7 +781,7 @@ public Dictionary<string, string>.Enumerator EnumerateHeaders()
 
 
         // Загружает ответ и возвращает размер ответа в байтах.
-        internal long LoadResponse(HttpMethod method)
+        internal long LoadResponse(HttpMethod method, bool includeRedirectHeaders)
         {
             Method = method;
             Address = _request.Address;
@@ -785,6 +791,11 @@ internal long LoadResponse(HttpMethod method)
             KeepAliveTimeout = null;
             MaximumKeepAliveRequests = null;
 
+            if (includeRedirectHeaders && _headers.Count > 0)
+            {
+                foreach (var key in _headers.Keys)
+                    MiddleHeaders[key] = _headers[key];
+            }
             _headers.Clear();
 
             if (!_request.DontTrackCookies)

README.md

@@ -23,3 +23,15 @@ dotnet add package Leaf.xNet
 ```
 paket add Leaf.xNet
 ```
+
+# Features
+## Middle response headers (when redirected)
+```csharp
+var req = new HttpRequest();
+// REQUIRED!
+req.EnableMiddleHeaders = true;
+
+// This requrest has a lot of redirects
+var resp = req.Get("https://account.sonyentertainmentnetwork.com/");
+var md = resp.MiddleHeaders;
+```