added support for headers in response

Author: sbansla

src/Twilio/Base/ResourceSetWithHeaders.cs

@@ -0,0 +1,66 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Net;
+
+#if NET35
+using Headers = System.Net.WebHeaderCollection;
+#else
+using Headers = System.Net.Http.Headers.HttpResponseHeaders;
+#endif
+
+namespace Twilio.Base
+{
+    /// <summary>
+    /// Wrapper class that contains both the resource set and HTTP response headers.
+    /// Implements IEnumerable to allow direct iteration over records.
+    /// </summary>
+    /// <typeparam name="T">The type of the resource</typeparam>
+    public class ResourceSetWithHeaders<T> : IEnumerable<T> where T : Resource
+    {
+        /// <summary>
+        /// The resource set containing the records
+        /// </summary>
+        public ResourceSet<T> Records { get; }
+
+        /// <summary>
+        /// HTTP response headers from the initial request
+        /// </summary>
+        public Headers Headers { get; }
+
+        /// <summary>
+        /// HTTP status code from the initial request
+        /// </summary>
+        public HttpStatusCode StatusCode { get; }
+
+        /// <summary>
+        /// Create a new ResourceSetWithHeaders
+        /// </summary>
+        /// <param name="records">The resource set containing records</param>
+        /// <param name="headers">HTTP response headers</param>
+        /// <param name="statusCode">HTTP status code</param>
+        public ResourceSetWithHeaders(ResourceSet<T> records, Headers headers, HttpStatusCode statusCode)
+        {
+            Records = records;
+            Headers = headers;
+            StatusCode = statusCode;
+        }
+
+        /// <summary>
+        /// Get enumerator for iterating over resources
+        /// </summary>
+        /// <returns>IEnumerator of resources</returns>
+        public IEnumerator<T> GetEnumerator()
+        {
+            return Records.GetEnumerator();
+        }
+
+        /// <summary>
+        /// Get enumerator for iterating over resources
+        /// </summary>
+        /// <returns>IEnumerator of resources</returns>
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+    }
+}

src/Twilio/Base/ResourceWithHeaders.cs

@@ -0,0 +1,45 @@
+using System.Net;
+
+#if NET35
+using Headers = System.Net.WebHeaderCollection;
+#else
+using Headers = System.Net.Http.Headers.HttpResponseHeaders;
+#endif
+
+namespace Twilio.Base
+{
+    /// <summary>
+    /// Wrapper class that contains both the resource and HTTP response headers
+    /// </summary>
+    /// <typeparam name="T">The type of the resource</typeparam>
+    public class ResourceWithHeaders<T>
+    {
+        /// <summary>
+        /// The resource data
+        /// </summary>
+        public T Data { get; }
+
+        /// <summary>
+        /// HTTP response headers
+        /// </summary>
+        public Headers Headers { get; }
+
+        /// <summary>
+        /// HTTP status code
+        /// </summary>
+        public HttpStatusCode StatusCode { get; }
+
+        /// <summary>
+        /// Create a new ResourceWithHeaders
+        /// </summary>
+        /// <param name="data">The resource data</param>
+        /// <param name="headers">HTTP response headers</param>
+        /// <param name="statusCode">HTTP status code</param>
+        public ResourceWithHeaders(T data, Headers headers, HttpStatusCode statusCode)
+        {
+            Data = data;
+            Headers = headers;
+            StatusCode = statusCode;
+        }
+    }
+}