Add client certificates to HttpsServer and HttpClient.

tests/standalone/io/https_client_certificate_test.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.
+
+import "dart:io";
+import "dart:uri";
+import "dart:isolate";
+
+const SERVER_ADDRESS = "127.0.0.1";
+const HOST_NAME = "localhost";
+
+int numClientCertificatesReceived = 0;
+
+Function test(Map options) {
+  Future runTest([var unused]) {
+    var completer = new Completer();
+    HttpsServer server = new HttpsServer();
+    Expect.throws(() => server.port);
+
+    server.defaultRequestHandler =
+        (HttpRequest request, HttpResponse response) {
+      if (request.path == '/true') {
+        // Client certificate sent
+        numClientCertificatesReceived++;
+        Expect.isNotNull(request.certificate);
+        Expect.equals('CN=localhost', request.certificate.subject);
+      } else {
+        Expect.equals('/false', request.path);
+        Expect.isNull(request.certificate);
+      }
+
+      request.inputStream.onClosed = () {
+        response.outputStream.close();
+      };
+    };
+
+    server.listen(SERVER_ADDRESS,
+                  0,
+                  backlog: 5,
+                  certificate_name: 'CN=$HOST_NAME',
+                  requestClientCertificate: true);
+
+    HttpClient client = new HttpClient();
+    Future testConnect(bool sendCertificate) {
+      client.sendClientCertificate = sendCertificate;
+      client.clientCertificate = options['certificateName'];
+      var completer = new Completer();
+      HttpClientConnection conn =
+          client.getUrl(new Uri.fromString(
+              "https://$HOST_NAME:${server.port}/$sendCertificate"));
+      conn.onRequest = (HttpClientRequest request) {
+        request.outputStream.close();
+      };
+      conn.onResponse = (HttpClientResponse response) {
+        Expect.isNotNull(response.certificate);
+        Expect.equals('CN=myauthority', response.certificate.issuer);
+        response.inputStream.onClosed = () {
+          completer.complete(false);  // Chained call will not send cert.
+        };
+      };
+      conn.onError = (Exception e) {
+        Expect.fail("Unexpected error in Https Client: $e");
+      };
+      return completer.future;
+    }
+
+    testConnect(true).chain(testConnect).then((_) {
+        client.shutdown();
+        server.close();
+        Expect.throws(() => server.port);
+        // Run second test with a certificate name.
+        completer.complete(null);
+      });
+    return completer.future;
+  }
+  return runTest;
+}
+
+void InitializeSSL() {
+  var testPkcertDatabase =
+      new Path.fromNative(new Options().script).directoryPath.append('pkcert/');
+  SecureSocket.initialize(database: testPkcertDatabase.toNativePath(),
+                          password: 'dartdart');
+}
+
+void main() {
+  var keepAlive = new ReceivePort();
+  InitializeSSL();
+  // Test two connections in sequence.
+  test({'certificateName': null})()
+      .chain(test({'certificateName': 'localhost_cert'}))
+      .then((_) {
+    Expect.equals(2, numClientCertificatesReceived);
+    keepAlive.close();
+  });
+}