Add secure sockets to dart:io

tests/standalone/io/tls_socket_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.
+//
+// VMOptions=
+// VMOptions=--short_socket_read
+// The --short_socket_write option does not work with external server
+// www.google.dk.  Add this to the test when we have secure server sockets.
+// See TODO below.
+
+#import("dart:isolate");
+#import("dart:io");
+
+void main() {
+  var testPkcertDatabase =
+      new Path.fromNative(new Options().script).directoryPath.append('pkcert/');
+  TlsSocket.setCertificateDatabase(testPkcertDatabase.toNativePath());
+  // TODO(3593): Use a Dart HTTPS server for this test using TLS server sockets.
+  // When we use a Dart HTTPS server, allow --short_socket_write. The flag
+  // causes fragmentation of the client hello message, which doesn't seem to
+  // work with www.google.dk.
+  var tls = new TlsSocket("www.google.dk", 443);
+  List<String> chunks = <String>[];
+  tls.onConnect = () {
+    var request_bytes =
+      "GET / HTTP/1.0\r\nHost: www.google.dk\r\n\r\n".charCodes;
+    tls.writeList(request_bytes, 0, 20);
+    tls.writeList(request_bytes, 20, request_bytes.length - 20);
+  };
+  var useReadList;  // Mutually recursive onData callbacks.
+  void useRead() {
+    var data = tls.read();
+    var received = new String.fromCharCodes(data);
+    chunks.add(received);
+    tls.onData = useReadList;
+  }
+  useReadList = () {
+    var buffer = new List(2000);
+    int len = tls.readList(buffer, 0, 2000);
+    var received = new String.fromCharCodes(buffer.getRange(0, len));
+    chunks.add(received);
+    tls.onData = useRead;
+  };
+  tls.onData = useRead;
+  tls.onClosed = () {
+    String fullPage = Strings.concatAll(chunks);
+    Expect.isTrue(fullPage.contains('</body></html>'));
+    tls.close();
+  };
+}