Secure server sockets for dart:io. Add TlsServerSocket class, providing SSL server sockets.

tests/standalone/io/tls_server_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";
+
+const SERVER_ADDRESS = "127.0.0.1";
+const HOST_NAME = "localhost";
+
+class TlsTestServer {
+  void onConnection(Socket connection) {
+    connection.onConnect = () {
+      numConnections++;
+    };
+    connection.onData = () {
+      var data = connection.read();
+      var received = new String.fromCharCodes(data);
+      Expect.isTrue(received.contains("Hello from client "));
+      string name = received.substring(received.indexOf("client ") + 7);
+      var reply_bytes = "Welcome, client $name".charCodes;
+      connection.writeList(reply_bytes, 0, reply_bytes.length);
+    };
+  }
+
+  void errorHandlerServer(Exception e) {
+    Expect.fail("Server socket error $e");
+  }
+
+  int start() {
+    server = new TlsServerSocket(SERVER_ADDRESS, 0, 10);
+    Expect.equals(true, server != null);

[Mads Ager (google), 2012/11/20 14:59:45]

Expect.isTrue(server != null);

[Bill Hesse, 2012/11/20 17:46:55]

Replaced by Expect.isNotNull(server).
There are a huge number of "Expect.equals(true, "
in the standalone/io tests.  I wonder why?

+    server.onConnection = onConnection;
+    server.onError = errorHandlerServer;
+    server.setCertificate("CN=$HOST_NAME");
+    print("port: ${server.port}");

[Mads Ager (google), 2012/11/20 14:59:45]

remove debug printing.

[Bill Hesse, 2012/11/20 17:46:55]

Done.

+    return server.port;
+  }
+
+  void stop() {
+    server.close();
+  }
+
+  int numConnections = 0;
+  TlsServerSocket server;
+}
+
+class TlsTestClient {
+  TlsTestClient(int this.port, String this.name) {
+    socket = new TlsSocket(HOST_NAME, port);
+    socket.onConnect = this.onConnect;
+    socket.onData = this.onData;
+    reply = "";
+  }
+
+  void onConnect() {
+    numRequests++;
+    var request_bytes =
+        "Hello from client $name".charCodes;
+    socket.writeList(request_bytes, 0, request_bytes.length);
+  }
+
+  void onData() {
+    var data = socket.read();
+    var received = new String.fromCharCodes(data);
+    reply = reply.concat(received);
+    if (reply.contains("Welcome") && reply.contains(name)) {
+      done();
+    }
+  }
+
+  void done() {
+    Expect.equals("Welcome, client $name", reply);
+    socket.close(true);
+    numReplies++;
+    if (numReplies == CLIENT_NAMES.length) {
+      Expect.equals(numRequests, numReplies);
+      EndTest();
+    }
+  }
+
+  static int numRequests = 0;
+  static int numReplies = 0;
+
+  int port;
+  String name;
+  TlsSocket socket;
+  String reply;
+}
+
+Function EndTest;
+
+const CLIENT_NAMES = const ['able', 'baker', 'camera', 'donut', 'echo'];
+
+void main() {
+  Path scriptDir = new Path.fromNative(new Options().script).directoryPath;
+  Path certificateDatabase = scriptDir.append('pkcert');
+  TlsSocket.setCertificateDatabase(certificateDatabase.toNativePath(),
+                                   'dartdart');
+
+  var server = new TlsTestServer();
+  int port = server.start();
+
+  EndTest = () {
+    Expect.equals(CLIENT_NAMES.length, server.numConnections);
+    server.stop();
+    print("Test PASSED");

[Mads Ager (google), 2012/11/20 14:59:45]

remove print.

[Bill Hesse, 2012/11/20 17:46:55]

I thought this was a nice print, but removed.
If we don't reach here, then we should fail by timing out.

+  };
+
+  for (var x in CLIENT_NAMES) {
+    new TlsTestClient(port, x);
+  }
+}