Connect to a Rails Server via Ruby using the TCPSocket. Getting "Length Required WEBrick::HTTPStatus::LengthRequired"

Question

I am trying to connect to a Rails server but the response i keep getting is

    Length Required WEBrick::HTTPStatus::LengthRequired 

I am using TCPSocket to connect to the server.

    require 'socket'  
    host = 'localhost'       
    port = 3000                             
    path = '/books/show'  
    #Path of the controller and action to connect to  
    request = "POST #{path} HTTP/1.0\r\n\r\n " 
    socket = TCPSocket.open(host,port)    
    socket.print(request) 

I suspect its the way that the content-length is specified

    socket.puts "content-length: 206\r\n" 
    #write response from server to html file  
    File.open('test2.html', 'w') do |res|  
      while (response_text = socket.gets)        
        res.puts "#{response_text}"       
      end   
    end  
    socket.close  

Answer 1

A blank line terminates the headers, and you will need to write content-length bytes. Try something like the following (note the movement of the second \r\n and the puts of 206 spaces):

require 'socket'
host = 'localhost'
port = 3000
path = '/products'
#Path of the controller and action to connect to
request = "POST #{path} HTTP/1.0\r\n"
socket = TCPSocket.open(host,port)
socket.print(request)
socket.puts "content-length: 206\r\n\r\n"
socket.puts ' ' * 206
#write response from server to html file
File.open('test2.html', 'w') do |res|
  while (response_text = socket.gets)
    res.puts "#{response_text}"
  end
end
socket.close