benharri.org
IRC parsing, tokenization, and state handling in C#
1using System;
2using System.Collections.Generic;
3using System.Net.Sockets;
4using System.Threading;
5using IrcTokens;
6
7namespace TokensSample
8{
9 public class Client
10 {
11 private readonly byte[] _bytes;
12 private readonly StatefulDecoder _decoder;
13 private readonly StatefulEncoder _encoder;
14 private readonly Socket _socket;
15
16 public Client()
17 {
18 _decoder = new StatefulDecoder();
19 _encoder = new StatefulEncoder();
20 _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
21 _bytes = new byte[1024];
22 }
23
24 public void Start()
25 {
26 _socket.Connect("127.0.0.1", 6667);
27 while (!_socket.Connected) Thread.Sleep(1000);
28
29 Send(new Line {Command = "NICK", Params = new List<string> {"tokensbot"}});
30 Send(new Line {Command = "USER", Params = new List<string> {"tokensbot", "0", "*", "real name"}});
31
32 while (true)
33 {
34 var bytesReceived = _socket.Receive(_bytes);
35
36 if (bytesReceived == 0)
37 {
38 Console.WriteLine("! disconnected");
39 _socket.Shutdown(SocketShutdown.Both);
40 _socket.Close();
41 break;
42 }
43
44 var lines = _decoder.Push(_bytes, bytesReceived);
45
46 foreach (var line in lines)
47 {
48 Console.WriteLine($"< {line.Format()}");
49
50 switch (line.Command)
51 {
52 case "PING":
53 Send(new Line {Command = "PONG", Params = line.Params});
54 break;
55 case "001":
56 Send(new Line {Command = "JOIN", Params = new List<string> {"#test"}});
57 break;
58 case "PRIVMSG":
59 Send(new Line
60 {
61 Command = "PRIVMSG", Params = new List<string> {line.Params[0], "hello there"}
62 });
63 break;
64 }
65 }
66 }
67 }
68
69 private void Send(Line line)
70 {
71 Console.WriteLine($"> {line.Format()}");
72 _encoder.Push(line);
73 while (_encoder.PendingBytes.Length > 0)
74 _encoder.Pop(_socket.Send(_encoder.PendingBytes, SocketFlags.None));
75 }
76 }
77}