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4 changed files with 36 additions and 16 deletions
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# user_agent
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# user_agent
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Middleware to inject a User Agent object into requests.
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Middleware to inject a User Agent object into requests.
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For convenience's sake, it also exports the `user_agent` library.
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16
example/basic.dart
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16
example/basic.dart
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import 'dart:io';
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import 'package:angel_framework/angel_framework.dart';
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import 'package:angel_user_agent/angel_user_agent.dart';
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main() async {
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var app = new Angel()..before.add(parseUserAgent(strict: true));
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app.get(
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'/',
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(UserAgent ua) => ua.isChrome
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? 'Woohoo! You are running Chrome.'
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: 'Sorry, we only support Google Chrome.');
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var server = await app.startServer(InternetAddress.ANY_IP_V4, 3000);
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print('Listening at http://${server.address.address}:${server.port}');
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}
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import 'package:angel_framework/angel_framework.dart';
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import 'package:angel_framework/angel_framework.dart';
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import 'package:ua_parser/ua_parser.dart' as ua;
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import 'package:user_agent/user_agent.dart';
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export 'package:user_agent/user_agent.dart';
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/// Injects a [ua.Client] and [ua.UserAgent] into requests.
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/// Injects a [UserAgent] into requests.
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///
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///
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/// If [strict] is `true`, then an invalid
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/// If [strict] is `true`, then requests without a user agent will be rejected.
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/// `User-Agent` header will throw a `400 Bad Request`.
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RequestMiddleware parseUserAgent({bool strict: true}) {
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RequestMiddleware parseUserAgent({bool strict: true}) {
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return (req, res) async {
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return (RequestContext req, res) async {
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try {
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var agentString = req.headers.value('user-agent');
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final client = ua.parse(req.headers.value('User-Agent'));
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req
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if (agentString == null) {
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..inject(ua.Client, client)
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throw new AngelHttpException.badRequest(
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..inject(ua.UserAgent, client.userAgent);
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message: 'User-Agent header is required.');
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} catch (e) {
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} else if (agentString != null) {
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throw strict ?
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Map<String, List<String>> map = {};
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new AngelHttpException.BadRequest(message: 'Invalid user agent.') : e;
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req.headers.forEach((k, v) => map[k] = v);
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req.inject(UserAgent, new UserAgent(agentString, headers: map));
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}
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}
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return true;
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return true;
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};
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};
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}
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}
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@ -6,4 +6,5 @@ homepage: https://github.com/angel-dart/user_agent
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environment:
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environment:
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sdk: ">=1.19.0"
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sdk: ">=1.19.0"
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dependencies:
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dependencies:
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ua_parser: ^1.0.0
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angel_framework: ^1.0.0-dev
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user_agent: ^1.0.0-beta
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