send method

@override Future<StreamedResponse> send(BaseRequest request)

Sends an HTTP request and asynchronously returns the response.

Implementers should call BaseRequest.finalize to get the body of the request as a ByteStream. They shouldn't make any assumptions about the state of the stream; it could have data written to it asynchronously at a later point, or it could already be closed when it's returned. Any internal HTTP errors should be wrapped as ClientExceptions.

Implementation

@override
Future<http.StreamedResponse> send(http.BaseRequest request) {
  final AuthorizationHeaderBuilder ahb = AuthorizationHeaderBuilder();
  ahb.signatureMethod = _signatureMethod;
  ahb.clientCredentials = _clientCredentials;
  ahb.credentials = _credentials;
  ahb.method = request.method;
  ahb.url = request.url.toString();
  final Map<String, String> headers = request.headers;
  Map<String, String> additionalParameters = <String, String>{};
  if (headers.containsKey('Authorization')) {
    additionalParameters = Uri.splitQueryString(headers['Authorization']!);
  }
  if (headers.containsKey('content-type') &&
      headers['content-type']!
          .contains('application/x-www-form-urlencoded')) {
    additionalParameters
        .addAll(Uri.splitQueryString((request as http.Request).body));
  }
  ahb.additionalParameters = additionalParameters;

  request.headers['Authorization'] = ahb.build().toString();
  return _httpClient.send(request);
}