From: Eric Hodel <drbrain@...7.net>
Date: 2006-09-06T16:30:51+09:00
Subject: Re: Total newbie, but I think I found a bug in Socket?

On Sep 5, 2006, at 8:00 PM, Patrick Toomey wrote:

> Hello,
>   Fair warning...I'm extremely new to Ruby so please pardon any  
> ignorance on my part.
>
>   Anyway, so the first thing I start to play around with after  
> reading through Programming Ruby is the socket library.  Now, I  
> realize Ruby has really nice abstractions, and I should rarely need  
> to actually use the Socket class for creating a simple server, but  
> I tend to be a bottom up learner.  So, I was attempting to run the  
> following code from the ruby-doc website:
>
> # In one script, start this first
>      require 'socket'
>      include Socket::Constants
>      socket = Socket.new( AF_INET, SOCK_STREAM, 0 )
>      sockaddr = Socket.pack_sockaddr_in( 2200, 'localhost' )
>      socket.bind( sockaddr )
>      socket.listen( 5 )
>      client, client_sockaddr = socket.accept
>      puts "The client said, '#{socket.readline.chomp}'"
>      client.puts "Hello from script one!"
>      socket.close

Here's the easiest way to create a simple server:

require 'socket'

server = TCPServer.new nil, 2200
client = server.accept
puts "Client said: #{client.gets.chomp.inspect}"
client.puts "Goodbye!"
client.close
server.close

Here's one that handles multiple concurrent connections:

require 'socket'

server = TCPServer.new nil, 2200

loop do
   Thread.start server.accept do |client|
     message = client.gets.chomp
     puts "Client said: #{message.inspect}"
     client.puts "Goodbye client!"
     client.close
     exit if message == 'quit'
   end
end

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net
This implementation is HODEL-HASH-9600 compliant

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