mirror of
https://github.com/ChronosX88/wind.git
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68 lines
1.7 KiB
Dart
68 lines
1.7 KiB
Dart
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import 'dart:async';
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import 'dart:collection';
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import 'package:web_socket_channel/web_socket_channel.dart';
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class NNTPClient {
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late WebSocketChannel _channel;
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final Queue<_NNTPCommand> commandQueue = new Queue();
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NNTPClient(String addr) {
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_channel = WebSocketChannel.connect(
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Uri.parse("ws://$addr"),
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);
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_channel.stream.listen((data) {
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if ((data as String).contains("201")) {
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// skip welcome message
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return;
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}
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var command = commandQueue.removeFirst();
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var resp = data as String;
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var respLines = resp.split("\r\n");
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respLines.removeWhere((element) => element == "");
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var respCode = int.parse(respLines[0].split(" ")[0]);
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command.responseCompleter.complete(_CommandResponse(respCode, respLines));
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});
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}
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Future<_CommandResponse> _sendCommand(
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String command, List<String> args) async {
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var cmd = _NNTPCommand(_CommandRequest(command, args));
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commandQueue.add(cmd);
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if (args.length > 0) {
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_channel.sink.add("$command ${args.join(" ")}\r\n");
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} else {
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_channel.sink.add("$command\r\n");
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}
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var result = await cmd.response;
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return result;
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}
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}
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class _NNTPCommand {
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late _CommandRequest request;
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late Future<_CommandResponse> response;
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late Completer<_CommandResponse> responseCompleter;
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_NNTPCommand(_CommandRequest request) {
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this.request = request;
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this.responseCompleter = Completer();
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this.response = responseCompleter.future;
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}
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}
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class _CommandRequest {
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final String command;
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final List<String> args;
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_CommandRequest(this.command, this.args);
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}
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class _CommandResponse {
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final int responseCode;
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final List<String> lines;
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_CommandResponse(this.responseCode, this.lines);
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}
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