From: Brian Candler <B.Candler@...>
Date: 2008-09-02T06:00:29+09:00
Subject: Re: Simple, simple socket question

> This works on my system (Just brings back 128 bytes HTTP header). (Note 
> the extra '\n'...

That's one too many \n's now. There's one already at the end of Host:
www.google.com\n, so you only need one more to give the blank line.

But actually, to comply with RFCs, you need to send \r\n at the end of each
line:

  require 'socket'

  mySock = TCPSocket::new("www.google.com", 80)
  mySock.write("GET / HTTP/1.1\r\n")
  mySock.write("Host: www.google.com\r\n\r\n")

  data = mySock.recv(128)
  mySock.close
  puts data

Quite a few webservers gracefully accept \n, but there are also plenty of
strict ones which don't - including Mongrel I believe.

HTH,

Brian.