respond method

void respond(int status, { Object? json, String? body, List<int>? bytes, Map<String, String> headers = const {}, })

Answers with status, headers and at most one kind of body: json, encoded, with Content-Type: application/json unless headers set another; body, text sent in UTF-8; or bytes. With none of them the body is empty. If several are given, json wins, then body.

Implementation

void respond(
  int status, {
  Object? json,
  String? body,
  List<int>? bytes,
  Map<String, String> headers = const {},
}) {
  final responseHeaders = HttpHeaders(headers);
  final List<int> content;
  if (json != null) {
    content = utf8.encode(jsonEncode(json));
    if (!responseHeaders.contains(HttpHeaders.contentTypeHeader)) {
      responseHeaders.set(
        HttpHeaders.contentTypeHeader,
        MediaType.applicationJson,
      );
    }
  } else if (body != null) {
    content = utf8.encode(body);
  } else {
    content = bytes ?? const [];
  }
  _expectation.answer = (request) async => StreamedHttpResponse(
    status,
    headers: responseHeaders.copy(),
    body: Stream.value(content),
    request: request,
  );
}