platform/packages/framework/example/http2/server_push.dart
2024-09-22 21:39:29 -07:00

62 lines
2 KiB
Dart

import 'dart:io';
import 'package:platform_framework/platform_framework.dart';
import 'package:platform_framework/http.dart';
import 'package:platform_framework/http2.dart';
import 'package:file/local.dart';
import 'package:logging/logging.dart';
void main() async {
var app = Protevus();
app.logger = Logger('angel')
..onRecord.listen((rec) {
print(rec);
if (rec.error != null) print(rec.error);
if (rec.stackTrace != null) print(rec.stackTrace);
});
var publicDir = Directory('example/http2/public');
var indexHtml =
const LocalFileSystem().file(publicDir.uri.resolve('index.html'));
var styleCss =
const LocalFileSystem().file(publicDir.uri.resolve('style.css'));
var appJs = const LocalFileSystem().file(publicDir.uri.resolve('app.js'));
// Send files when requested
app
..get('/style.css', (req, res) => res.streamFile(styleCss))
..get('/app.js', (req, res) => res.streamFile(appJs));
app.get('/', (req, res) async {
// Regardless of whether we pushed other resources, let's still send /index.html.
await res.streamFile(indexHtml);
// If the client is HTTP/2 and supports server push, let's
// send down /style.css and /app.js as well, to improve initial load time.
if (res is Http2ResponseContext && res.canPush) {
await res.push('/style.css').streamFile(styleCss);
await res.push('/app.js').streamFile(appJs);
}
});
var ctx = SecurityContext()
..useCertificateChain('dev.pem')
..usePrivateKey('dev.key', password: 'dartdart');
try {
ctx.setAlpnProtocols(['h2'], true);
} catch (e, st) {
app.logger.severe(
'Cannot set ALPN protocol on server to `h2`. The server will only serve HTTP/1.x.',
e,
st);
}
var http1 = ProtevusHttp(app);
var http2 = ProtevusHttp2(app, ctx);
// HTTP/1.x requests will fallback to `ProtevusHttp`
http2.onHttp1.listen(http1.handleRequest);
var server = await http2.startServer('127.0.0.1', 3000);
print('Listening at https://${server.address.address}:${server.port}');
}