Class: Jabber::Bytestreams::SOCKS5Socket

Inherits:
TCPSocket
  • Object
show all
Defined in:
lib/vendor/xmpp4r/lib/xmpp4r/bytestreams/helper/socks5bytestreams/socks5.rb

Overview

A SOCKS5 client implementation

Usage:

  • Initialize with proxy’s address and port

  • Authenticate

  • Connect to target host

Instance Method Summary collapse

Constructor Details

#initialize(socks_host, socks_port) ⇒ SOCKS5Socket

Connect to SOCKS5 proxy



20
21
22
 
# File 'lib/vendor/xmpp4r/lib/xmpp4r/bytestreams/helper/socks5bytestreams/socks5.rb', line 20

def initialize(socks_host, socks_port)
  super(socks_host, socks_port)
end

Instance Method Details

#auth ⇒ Object

Authenticate for SOCKS5 proxy

Currently supports only ‘no authentication required’



28
29
30
31
32
33
34
35
36
37
 
# File 'lib/vendor/xmpp4r/lib/xmpp4r/bytestreams/helper/socks5bytestreams/socks5.rb', line 28

def auth
  write("\x05\x01\x00")
  buf = read(2)
  if buf.nil? or buf != "\x05\x00"
    close
    raise SOCKS5Error.new("Invalid SOCKS5 authentication: #{buf.inspect}")
  end

  self
end

#connect_domain(domain, port) ⇒ Object

Issue a CONNECT request to a host name which is to be resolved by the proxy.

domain
String

Host name

port
Fixnum

Port number



44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'lib/vendor/xmpp4r/lib/xmpp4r/bytestreams/helper/socks5bytestreams/socks5.rb', line 44

def connect_domain(domain, port)
  write("\x05\x01\x00\x03#{domain.size.chr}#{domain}#{[port].pack("n")}")
  buf = read(4)
  if buf.nil? or buf[0..1] != "\005\000"
    close
    raise SOCKS5Error.new("Invalid SOCKS5 connect: #{buf.inspect}")
  end

  case buf.respond_to?(:bytes) ? buf.bytes.to_a[3] : buf[3]
    when 1 then read(6)  # IPv4 addr
    when 3 then read(3 + domain.size) # Domain
    when 4 then read(18) # IPv6 addr
    else
      close
      raise SOCKS5Error.new("Invalid SOCKS5 address type #{buf[3].to_s}")
  end

  self
end