added hook for providing a proxy to HttpClientAdapter

Octokit/Http/Connection.cs

@@ -36,6 +36,21 @@ namespace Octokit
         {
         }
 
+        /// <summary>
+        /// Creates a new connection instance used to make requests of the GitHub API.
+        /// </summary>
+        /// <param name="productInformation">
+        /// The name (and optionally version) of the product using this library. This is sent to the server as part of
+        /// the user agent for analytics purposes.
+        /// </param>
+        /// <param name="httpClient">
+        /// The client to use for executing requests
+        /// </param>
+        public Connection(ProductHeaderValue productInformation, IHttpClient httpClient)
+            : this(productInformation, _defaultGitHubApiUrl, _anonymousCredentials, httpClient, new SimpleJsonSerializer())
+        {
+        }
+
         /// <summary>
         /// Creates a new connection instance used to make requests of the GitHub API.
         /// </summary>

Octokit/Http/HttpClientAdapter.cs

@@ -18,6 +18,15 @@ namespace Octokit.Internal
     /// </remarks>
     public class HttpClientAdapter : IHttpClient
     {
+        readonly IWebProxy webProxy;
+
+        public HttpClientAdapter() { }
+
+        public HttpClientAdapter(IWebProxy webProxy)
+        {
+            this.webProxy = webProxy;
+        }
+
         public async Task<IResponse<T>> Send<T>(IRequest request)
         {
             Ensure.ArgumentNotNull(request, "request");
@@ -30,6 +39,12 @@ namespace Octokit.Internal
             {
                 httpOptions.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
             }
+            if (httpOptions.SupportsProxy && webProxy != null)
+            {
+                httpOptions.UseProxy = true;
+                httpOptions.Proxy = webProxy;
+            }
+
 
             var http = new HttpClient(httpOptions)
             {