VM Service isolate listing

runtime/bin/vmservice/server.dart

+// Copyright (c) 2013, 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.
+
+part of vmservice;
+
+class Server {
+  int port;
+  static ContentType jsonContentType = ContentType.parse('application/json');
+  final VmService service;
+  HttpServer _server;
+
+  Server(this.service, this.port);
+
+  void _requestHandler(HttpRequest request) {
+    // Allow cross origin requests.
+    request.response.headers.add('Access-Control-Allow-Origin', '*');
+
+    final String path =
+          request.uri.path == '/' ? '/index.html' : request.uri.path;
+
+    var resource = Resource.resources[path];
+    if (resource != null) {
+      // Serving up a static resource (e.g. .css, .html, .png).
+      request.response.headers.contentType = ContentType.parse(mimeType);
+      request.response.add(resource.data);
+      request.response.close();
+      return;
+    }
+
+    var serviceRequest = new ServiceRequest();
+    var r = serviceRequest.parse(request.uri);
+    if (!r) {
+      // Did not understand the request uri.
+      serviceRequest.setErrorResponse('Invalid request uri: ${request.uri}');
+    } else {
+      r = service.runningIsolates.route(serviceRequest);
+      if (!r) {
+        // Nothing responds to this type of request.
+        serviceRequest.setErrorResponse('No route for: $path');
+      }
+    }
+
+    // Send response back over HTTP.
+    request.response.headers.contentType = jsonContentType;
+    request.response.write(serviceRequest.response);
+    request.response.close();
+  }
+
+  Future startServer() {
+    return HttpServer.bind(InternetAddress.LOOPBACK_IP_V4, port).then((s) {
+      // Only display message when port is automatically selected.
+      var display_message = (port == 0);
+      // Retrieve port.
+      port = s.port;
+      _server = s;
+      _server.listen(_requestHandler);
+      if (display_message) {
+        print('VmService listening on port $port');
+      }
+      return s;
+    });
+  }
+}
+