ggirou/Dockerfile

## app.yaml
version: 1
runtime: custom
vm: true
api_version: 1

manual_scaling:
  instances: 1

## bin\server.dart
import 'dart:io';
import 'dart:async';

var content = '''<html>
  <head>
    <script type="application/javascript">
      var output = function(data) { document.write(data + "<br>"); };
      var socket = new WebSocket("ws://" + location.host + "/ws");
      socket.onopen = function(event) {
        output('Socket opened');
        socket.send("Hello");
        socket.send("World!");
      };
      socket.onmessage = function(event) {
        output('Message ' + event.data);
      }
    </script>
  </head>
  <body>...</body>
</html>''';

main(List<String> args) {
  runZoned(() {
    HttpServer.bind(InternetAddress.ANY_IP_V4, 8080).then((HttpServer server) {
      print("Listening on ws://localhost:8080/ws");

      server.listen((HttpRequest req) {
        print(req);
        if (req.uri.path == '/ws') {
          WebSocketTransformer.upgrade(req).then(handleWebSocket);
        } else {
          req.response
            ..headers.add('Content-Type', 'text/html')
            ..write(content)
            ..close();
        }
      });
    });
  }, onError: (e) => print("An error occurred $e"));
}

void handleWebSocket(WebSocket ws) {
  ws.listen((data) => ws.add("PONG: $data"));
}

## Dockerfile
FROM google/dart-runtime

## pubspec.lock
# Generated by pub
# See http://pub.dartlang.org/doc/glossary.html#lockfile
packages: {}

## pubspec.yaml
name: websocket
description: A sample websocket application
	version: 1
	runtime: custom
	vm: true
	api_version: 1

	manual_scaling:
	instances: 1
	import 'dart:io';
	import 'dart:async';

	var content = '''<html>
	<head>
	<script type="application/javascript">
	var output = function(data) { document.write(data + "<br>"); };
	var socket = new WebSocket("ws://" + location.host + "/ws");
	socket.onopen = function(event) {
	output('Socket opened');
	socket.send("Hello");
	socket.send("World!");
	};
	socket.onmessage = function(event) {
	output('Message ' + event.data);
	}
	</script>
	</head>
	<body>...</body>
	</html>''';

	main(List<String> args) {
	runZoned(() {
	HttpServer.bind(InternetAddress.ANY_IP_V4, 8080).then((HttpServer server) {
	print("Listening on ws://localhost:8080/ws");

	server.listen((HttpRequest req) {
	print(req);
	if (req.uri.path == '/ws') {
	WebSocketTransformer.upgrade(req).then(handleWebSocket);
	} else {
	req.response
	..headers.add('Content-Type', 'text/html')
	..write(content)
	..close();
	}
	});
	});
	}, onError: (e) => print("An error occurred $e"));
	}

	void handleWebSocket(WebSocket ws) {
	ws.listen((data) => ws.add("PONG: $data"));
	}
	# Generated by pub
	# See http://pub.dartlang.org/doc/glossary.html#lockfile
	packages: {}