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--- programming:irc [2021/06/02 07:05]
nanodano
+++ programming:irc [2022/03/13 16:49] (current)
nanodano
@@ Line 3: / Line 3: @@
 IRC stands for Internet Relay Chat.
-===== DevDungeon IRC Server =====
-If you're looking for an existing server to join, connect to ''irc.devdungeon.com'' on port ''6667''.
+===== 2-minute Intro to IRC =====
-<code>
+<html>
-irc.devdungeon.com
+<center>
-# or
+<iframe width="560" height="315" src="https://www.youtube.com/embed/-4ab5-F72nY" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
-.53.170.182
+</center>
-</code>
+</html>
-===== Clients =====
+===== Using IRC with netcat =====
-There are many clients out there, but here are a few:
+<html>
+<center>
-  * [[http://xchat.org/|XChat]] (GUI) - For Windows, download and install from the website. For Debian, install with ''apt install xchat''.
+<iframe width="560" height="315" src="https://www.youtube.com/embed/FDrR98ww6bE" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
-  * [[https://pidgin.im/|Pidgin]] (GUI) - For Windows, download and install from the website. For Debian, install with ''apt install pidgin''. Pidgin is nice because it supports other protocols too so you can have your XMPP account and IRC setup together.
+</center>
-  * [[https://irssi.org/|irssi]] (Terminal) - For Windows, use Debian WSL. In Debian, install with ''apt install irssi''. In Mac, ''brew install irssi''. Use the normal IRC slash commands like ''/list'' and ''/join #general''. Use alt keys plus window number to switch between chat windows. E.g. ''ALT-1'' and ''ALT-2''.
+</html>
-==== Basics ====
+===== Basics =====
 Once you are connected to an IRC server like ''irc.devdungeon.com'' you can start running commands.
@@ Line 41: / Line 40: @@
+===== Clients =====
+There are many clients out there, but here are a few:
+  * [[http://xchat.org/|XChat]] (GUI) - For Windows, download and install from the website. For Debian, install with ''apt install xchat''.
+  * [[https://pidgin.im/|Pidgin]] (GUI) - For Windows, download and install from the website. For Debian, install with ''apt install pidgin''. Pidgin is nice because it supports other protocols too so you can have your XMPP account and IRC setup together.
+  * [[other:irssi_terminal_chat|irssi]] (Terminal) - For Windows, use Debian WSL. In Debian, install with ''apt install irssi''. In Mac, ''brew install irssi''. Use the normal IRC slash commands like ''/list'' and ''/join #general''. Use alt keys plus window number to switch between chat windows. E.g. ''ALT-1'' and ''ALT-2''.
+  * netcat - You can use netcat as a client if you understand the IRC protocol. Check out my video tutorial [[https://youtu.be/FDrR98ww6bE|IRC with netcat]].
+===== Node.js Bot =====
+<code javascript simple_irc_bot.js>
+var net = require('net');  // https://nodejs.org/dist/latest/docs/api/net.html
+var BOT_NAME = 'mybot2';
+var BOT_CHANNEL = '#bots';
+var client = new net.Socket();
+client.connect(6667, 'irc.devdungeon.com', function() {
+  client.write('USER ' + BOT_NAME +  ' 0 * :' + BOT_NAME + '\n');
+  client.write('NICK ' + BOT_NAME + '\n'); // Must wait a second to register
+  setTimeout(function(){
+      client.write('JOIN ' + BOT_CHANNEL + '\n');
+      client.write('PRIVMSG ' + BOT_CHANNEL + ' Hello my Node.js bot is online!\n');
+   }, 3000);
+});
+client.on('data', function(data) {
+  console.log('MESSAGE_FROM_SERVER: ' + data);
+ var text = data.toString();
+ var splitText = text.split(' ');
+  // If data starts with PING, respond with PONG :whatever
+  if (text.startsWith('PING')) {
+    client.write('PONG ' + text.substring(5));  // Remove `PING ` and pong back what it sent me
+    console.log('Recieved PING. PONGED.');
+  } else if (splitText[1] == 'PRIVMSG') { // PM or chat room
+    // If data comes from a channel (#general):
+    //   :nanodano!johnd@107.181.165.217 PRIVMSG #general :Hello bot
+    // If data comes from privmsg (dano):
+    //   :nanodano!johnd@107.181.165.217 PRIVMSG danobot :hey
+    console.log('Destination:' + splitText[2])
+    // Was it a direct message or to the channel?
+    if (splitText[2] == BOT_CHANNEL) {
+       console.log('message was from ' + BOT_CHANNEL)
+    }
+    if (splitText[2] == BOT_NAME) {
+       console.log('message was directly to me (' + BOT_NAME + ')')
+    }
+    // Was the message a command?
+    if (splitText[3].substring(1).startsWith('!')) {
+      console.log('Command detected with ! prefix')
+      // Cut off first character, and check command. Run appropriate function. !bitcoin. !ping !8-ball
+      var command = splitText[3].substring(2).trim().toLowerCase();
+      console.log('Command: `' + command + '`');
+      if (command == 'ping') {
+        console.log('Ping command detected! Ponging.');
+        client.write('PRIVMSG ' + BOT_CHANNEL + ' Pong\n');
+      }
+    }
+    console.log('PrivMsg: ' + splitText[3].substring(1)); // Cut off : in front
+  } else {
+    console.log('Discarded unexpected/unimportant message.');
+  }
+});
+</code>

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