package(cloudflare_workers): Missing headers

[Mravuri96]

Custom headers are not being passed through the exposed fetch function.

dart_edge/packages/cloudflare_workers/lib/public/top.dart

Line 38 in 052fc4f

headers: headers?.delegate,

Code sample

import 'dart:convert';

import 'package:cloudflare_workers/cloudflare_workers.dart';
import 'package:intl/intl.dart';

void main() async {
  final kiwiRepository = KiwiRepository();
  
  CloudflareWorkers(
    fetch: (final Request request, final _, final __) async {
      if (request.url.toString().contains('favicon.ico')) {
        return Response(null);
      }

      try {
        final tickets = await kiwiRepository.fetchTickets();

        return Response(jsonEncode(tickets));
      } catch (e) {
        return Response('Error: $e');
      }
    },
  );
}

class KiwiRepository {
  const KiwiRepository();

  FutureOr<Map> fetchTickets() async {
    final uri = Uri(
      scheme: 'https',
      host: 'api.tequila.kiwi.com',
      path: 'v2/search',
      queryParameters: <String, String>{
        'fly_from': 'FAT',
        'fly_to': 'JFK',
        'date_from': DateFormat('dd/MM/yyyy').format(
          DateTime.now(),
        ),
        'date_to': DateFormat('dd/MM/yyyy').format(
          DateTime.now().add(const Duration(days: 30)),
        ),
        'limit': '25',
        'sort': 'price',
      },
    );

    final headers = Headers(
      {
        'apikey': '****',
      },
    );

    final response = await fetch(
      Resource.uri(uri),
      headers: headers,
    );

    final data = await response.json();

    return (data as Map<String, dynamic>);
  }
}

[Ehesp]

Should be fixed via c75720b on 0.0.2+3. Let me know if there's any issues.

[Mravuri96]

@Ehesp Could you re-open this. Just tried testing bit more and it seems to be only working in wrangler dev --local mode. Publishing it or removing the --local flag during development also seems to break it.

[Ehesp]

That's odd, the difference there is its running in miniflare vs workers. Not sure what the difference is there... Any errors?

[Mravuri96]

Console output

A hanging Promise was canceled. This happens when the worker runtime is waiting for a Promise from JavaScript to resolve, but has detected that the Promise cannot possibly ever resolve because all code and events related to the Promise's I/O context have already finished.
✘ [ERROR] Uncaught (in response) Error: The script will never generate a response.

[Ehesp]

Oh, yeah @Mravuri96 this won't work. When there's no --dev flag the code is actually running on Cloudflare's services, so it's not going to be able to find localhost.