Class: Net::SSH::Compat

Inherits:
Object
  • Object
show all
Defined in:
lib/net/ssh/ruby_compat.rb

Overview

This class contains miscellaneous patches and workarounds for different ruby implementations.

Constant Summary collapse

SELECT_MUTEX = 
Mutex.new

Class Method Summary collapse

Class Method Details

.io_select(*params) ⇒ Object

problem: Pageant sockets aren’t real sockets/don’t inherit from IO, so we can’t call IO.select on them solution: when a Pageant socket is found in the readers/writers array, slice it out then merge it back in before returning (just assume it’s always ready) unfortunately this fix will also need to be ported to any other library that reaches in to Net::SSH and select’s its sockets (like Capistrano) this is slightly more verbose than necessary, but it’s useful for debugging



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/net/ssh/ruby_compat.rb', line 34

def self.io_select(*params)
  read_array = params[0]
  write_array = params[1]
  error_array = params[2]
  timeout = params[3]

  read_sockets = read_array.nil? ? [] : read_array.reject {|s| s.class.name =~ /Pageant/ }
  read_pageant = read_array.nil? ? [] : read_array.select {|s| s.class.name =~ /Pageant/ }

  write_sockets = write_array.nil? ? [] : write_array.reject {|s| s.class.name =~ /Pageant/ }
  write_pageant = write_array.nil? ? [] : write_array.select {|s| s.class.name =~ /Pageant/ }

  result = IO.select(read_sockets, write_sockets, error_array, timeout)

  if result.nil?
    return nil
  else
    ready_read_sockets = result[0]
    ready_write_sockets = result[1]
    ready_error_array_only_sockets = result[2]

    return [ready_read_sockets | read_pageant, ready_write_sockets | write_pageant, ready_error_array_only_sockets]
  end
end