Add handling of HTTP header "Expires"

tests/standalone/src/io/HttpTest.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 
 #import("dart:isolate");
@@ skipping 106 matching lines @@
     response.outputStream.close();
   }
 
   // Return a 301 with a custom reason phrase.
   void _reasonForMovingHandler(HttpRequest request, HttpResponse response) {
     response.statusCode = HttpStatus.MOVED_PERMANENTLY;
     response.reasonPhrase = "Don't come looking here any more";
     response.outputStream.close();
   }
 
-  // Return a 301 with a custom reason phrase.
+  // Check the "Host" header.
   void _hostHandler(HttpRequest request, HttpResponse response) {
     Expect.equals("www.dartlang.org:1234", request.headers["host"]);
     response.statusCode = HttpStatus.OK;
     response.outputStream.close();
   }
 
+  // Set the "Expires" header using the expires property.
+  void _expires1Handler(HttpRequest request, HttpResponse response) {
+    Date date =
+        new Date.withTimeZone(
+            1999, Date.JUN, 11, 18, 46, 53, 0, new TimeZone.utc());
+    response.expires = date;
+    Expect.equals(date, response.expires);
+    response.outputStream.close();
+  }
+
+  // Set the "Expires" header.
+  void _expires2Handler(HttpRequest request, HttpResponse response) {
+    response.setHeader("Expires", "Fri, 11 Jun 1999 18:46:53 GMT");
+    Date date =
+        new Date.withTimeZone(
+            1999, Date.JUN, 11, 18, 46, 53, 0, new TimeZone.utc());
+    Expect.equals(date, response.expires);
+    response.outputStream.close();
+  }
+
   void main() {
     // Setup request handlers.
     _requestHandlers = new Map();
     _requestHandlers["/echo"] = (HttpRequest request, HttpResponse response) {
       _echoHandler(request, response);
     };
     _requestHandlers["/0123456789"] =
         (HttpRequest request, HttpResponse response) {
           _zeroToTenHandler(request, response);
         };
     _requestHandlers["/reasonformoving"] =
         (HttpRequest request, HttpResponse response) {
           _reasonForMovingHandler(request, response);
         };
     _requestHandlers["/host"] =
         (HttpRequest request, HttpResponse response) {
           _hostHandler(request, response);
         };
+    _requestHandlers["/expires1"] =
+        (HttpRequest request, HttpResponse response) {
+          _expires1Handler(request, response);
+        };
+    _requestHandlers["/expires2"] =
+        (HttpRequest request, HttpResponse response) {
+          _expires2Handler(request, response);
+        };
 
     this.port.receive((var message, SendPort replyTo) {
       if (message.isStart) {
         _server = new HttpServer();
         try {
           _server.listen("127.0.0.1", 0);
           _server.onRequest = (HttpRequest req, HttpResponse rsp) {
             _requestReceivedHandler(req, rsp);
           };
           replyTo.send(new TestServerStatus.started(_server.port), null);
@@ skipping 276 matching lines @@
     };
     conn.onResponse = (HttpClientResponse response) {
       Expect.equals(HttpStatus.OK, response.statusCode);
       httpClient.shutdown();
       testServerMain.shutdown();
     };
   });
   testServerMain.start();
 }
 
+void testExpires() {
+  TestServerMain testServerMain = new TestServerMain();
+  testServerMain.setServerStartedHandler((int port) {
+    int responses = 0;
+    HttpClient httpClient = new HttpClient();
+
+    void processResponse(HttpClientResponse response) {
+      Expect.equals(HttpStatus.OK, response.statusCode);
+      Expect.equals("Fri, 11 Jun 1999 18:46:53 GMT",
+                    response.headers["expires"]);
+      Expect.equals(
+          new Date.withTimeZone(
+              1999, Date.JUN, 11, 18, 46, 53, 0, new TimeZone.utc()),
+          response.expires);
+      responses++;
+      if (responses == 2) {
+        httpClient.shutdown();
+        testServerMain.shutdown();
+      }
+    }
+
+    HttpClientConnection conn1 = httpClient.get("127.0.0.1", port, "/expires1");
+    conn1.onResponse = (HttpClientResponse response) {
+      processResponse(response);
+    };
+    HttpClientConnection conn2 = httpClient.get("127.0.0.1", port, "/expires2");
+    conn2.onResponse = (HttpClientResponse response) {
+      processResponse(response);
+    };
+  });
+  testServerMain.start();
+}
+
 
 void main() {
   testStartStop();
   testGET();
   testPOST(true);
   testPOST(false);
   testReadInto(true);
   testReadInto(false);
   testReadShort(true);
   testReadShort(false);
   test404();
   testReasonPhrase();
   testHost();
+  testExpires();
 }