A simple chat server in Node.js

http://dhotson.tumblr.com/post/271733389/a-simple-chat-server-in-node-js

by dhotson • 17 years ago

38 8 17 years ago

dhotson.tumblr.com

zackattack• 17 years ago

Very cool. One question:

Can you please explain this line?

  55       if (c != client)

jazzychad2• 17 years ago

For some context:

  54     clients.each(function(c) {
  55       if (c != client)
  56         c.connection.send(client.name + ": " + data);
  57     });

Line 55 is just there as a check to prevent echoing back the message to the client that sent it (as presumably the message they type will already be on their screen/terminal, if they are connected with netcat as the author suggests).

dhotson2• 17 years ago

This is correct. :-)

JimBastard• 17 years ago

Doesn't node come with a built in chat server demo?

http://github.com/ry/node_chat

jazzychad2• 17 years ago

Yes, but that is designed for a browser/web/comet chat demo.

This chat demo is just a bare-bones tcp socket netcat/telnet chat server. Simple. Elegant. Effective.

bham2• 17 years ago

There's also an ircd

https://gist.github.com/a3d0bbbff196af633995

bham2• 17 years ago

    Array.prototype.each

This is not needed. There's .forEach already.

dhotson2• 17 years ago

Oh right.. thanks!

For some reason, I had it stuck in my mind that forEach() passed the index rather than the element.

A simple chat server in Node.js

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