Documentation needed for using withReadStream enabled.

[dibyasom]

Some documentation to show how to use file_picker withReadStream set would be helpful, for working/uploading big files.

[miguelpruivo]

Yes, I might add one.

[redsolver]

@vhaegar1526 You can pick and upload a large video file using this code for example:

import 'package:http/http.dart' as http;
import 'package:http_parser/http_parser.dart';
import 'package:mime/mime.dart';

void main() async {
  final result = await FilePicker.platform.pickFiles(
    type: FileType.video,
    allowedExtensions: [
      'mp4',
      'webm',
    ],
    withData: false,
    withReadStream: true,
  );

  if (result != null) {
    final file = result.files.first;

    var uri = Uri.https('siasky.net', '/skynet/skyfile');

    var stream = http.ByteStream(file.readStream);

    var request = http.MultipartRequest('POST', uri);

    final mimeType = lookupMimeType(file.filename ?? '');

    var multipartFile = http.MultipartFile(
      'file',
      stream,
      file.size,
      filename: file.filename,
      contentType: mimeType == null ? null : MediaType.parse(mimeType),
    );

    request.files.add(multipartFile);

    final httpClient = http.Client();
    final response = await httpClient.send(request);

    if (response.statusCode != 200) {
      throw Exception('HTTP ${response.statusCode}');
    }

    final body = await response.stream.transform(utf8.decoder).join();

    print(body);
  }
}

[miguelpruivo]

Added to the docs. Thank you @redsolver.