Basic SOCKS v4 client implementation
Use as you would any regular connection:
class MyConn < EM::P::Socks4
def post_init send_data("sup") end def receive_data(data) send_data("you said: #{data}") end
end
EM.connect socks_host, socks_port, MyConn, host, port
# File lib/em/protocols/socks4.rb, line 20 def initialize(host, port) @host = Socket.gethostbyname(host).last @port = port @socks_error_code = nil @buffer = '' setup_methods end
# File lib/em/protocols/socks4.rb, line 30 def post_init; socks_post_init; end
# File lib/em/protocols/socks4.rb, line 31 def receive_data(*a); socks_receive_data(*a); end
# File lib/em/protocols/socks4.rb, line 35 def restore_methods class << self remove_method :post_init remove_method :receive_data end end
# File lib/em/protocols/socks4.rb, line 28 def setup_methods class << self def post_init; socks_post_init; end def receive_data(*a); socks_receive_data(*a); end end end
# File lib/em/protocols/socks4.rb, line 42 def socks_post_init header = [4, 1, @port, @host, 0].flatten.pack("CCnA4C") send_data(header) end
# File lib/em/protocols/socks4.rb, line 47 def socks_receive_data(data) @buffer << data return if @buffer.size < 8 header_resp = @buffer.slice! 0, 8 _, r = header_resp.unpack("cc") if r != 90 @socks_error_code = r close_connection return end restore_methods post_init receive_data(@buffer) unless @buffer.empty? end