Add HttpsServer class and test.

sdk/lib/io/http.dart

Index: sdk/lib/io/http.dart
diff --git a/sdk/lib/io/http.dart b/sdk/lib/io/http.dart
index 02ab0ac8f08428911770f19b4e2fcab92214b5b8..5c8a2f02a8c295765ebb27a3c33e2fe5fb9527b3 100644
--- a/sdk/lib/io/http.dart
+++ b/sdk/lib/io/http.dart
@@ -62,11 +62,16 @@ abstract class HttpServer {
    * Start listening for HTTP requests on the specified [host] and
    * [port]. If a [port] of 0 is specified the server will choose an
    * ephemeral port. The optional argument [backlog] can be used to
-   * specify the listen backlog for the underlying OS listen
-   * setup. See [addRequestHandler] and [defaultRequestHandler] for
+   * specify the listen backlog for the underlying OS listen.
+   * The optional argument [certificate_name] is used by the HttpsServer
+   * class, which shares the same interface.
+   * See [addRequestHandler] and [defaultRequestHandler] for
    * information on how incoming HTTP requests are handled.
    */
-  void listen(String host, int port, {int backlog: 128});
+  void listen(String host,

[Mads Ager (google), 2012/11/29 09:45:24]

When we are splitting out the abstract classes I don't think it makes sense to
have a certificate_name in this interface.

Can we split this out so that there is an HttpServerBase that has everything
that is shared. Then HttpServer implements HttpServerBase and has the listen
method without the certificate_name and HttpsServer has the listen method with
the certificate_name (as a required parameter?). 

+              int port,
+              {int backlog: 128,
+              String certificate_name});

[Mads Ager (google), 2012/11/29 09:45:24]

I would indent this line by one more char, but that is personal style:

{int backlog: 128
 String certificate_name});

 
   /**
    * Attach the HTTP server to an existing [:ServerSocket:]. If the
@@ -127,6 +132,14 @@ abstract class HttpServer {
 
 
 /**
+ * HTTPS server.
+ */
+abstract class HttpsServer implements HttpServer {
+  factory HttpsServer() => new _HttpServer.httpsServer();
+}
+
+
+/**
  * Overview information of the [:HttpServer:] socket connections.
  */
 class HttpConnectionsInfo {