ios 上大图像的 Flutter SocketException 问题

Question

我有一种将图像发布到 django-rest api 的方法。它适用于小尺寸图像。但是当涉及到 900 KB 或更多（如 ios 图像）时，它需要一些时间并给我这个错误（而且这个问题只是在我使用 ios 设备时发生。没有问题 android) :

SocketException: OS Error: Connection reset by peer, errno = 54, address = 192.168.1.1, port = 52842

代码如下：

postImage(
    BuildContext context, String name, String description, var image) async {
  SharedPreferences preferences = await SharedPreferences.getInstance();
  final url = "http://192.168.1.1/posts/";
  final uri = Uri.parse(url);
  final subject = BehaviorSubject<Map<String, dynamic>>();
  Map<String, dynamic> responseDetail;
  var response;

  var request = http.MultipartRequest('POST', uri);
  request.headers[HttpHeaders.authorizationHeader] =
      'Token ${preferences.getString('Key')}';
  request.headers[HttpHeaders.acceptHeader] = 'application/json';
  request.fields['name'] = name;
  request.fields['description'] = description;
  if (image != null) {
    var length = await image.length();
    var stream = http.ByteStream(DelegatingStream.typed(image.openRead()));
    request.files.add(http.MultipartFile('image', stream, length,
        filename: basename(image.path),));
  } else {
    request.fields['image'] = '';
  }
  try {
    response = await request.send();
    if (response.statusCode != 201) {
      response.stream.transform(utf8.decoder).listen((value) {
    responseDetail = json.decode(value);
  }, onDone: () {
    subject.add(responseDetail);
    subject.close();
  });
  return subject.share();
}
return response.statusCode;
  } catch (e) {
print(e);
}
}

有什么问题？

Answer 1

是因为 nginx client_max_body_size。如果其他人遇到此问题，请转到 /etc/nginx/nginx.conf 路径并将此行 client_max_body_size 20M; 添加到 http 部分。最后做 service nginx reload .

ios 上大图像的 Flutter SocketException 问题

Flutter SocketException problem with large images on ios

django-rest-framework

flutter

flutter-dependencies