class Net::SSH::Authentication::Pageant::Socket19

the DL module as well as other pointer transformations
Functionality is the same as Ruby 1.8 but it includes the new calls to
Socket changes for Ruby 1.9

def send_query(query)

cached, to be returned piece-wise when #read is called.
process via the Windows messaging subsystem. The result is
Packages the given query string and sends it to the pageant 
def send_query(query)
  res = nil
  filemap = 0
  ptr = nil
  id = DL.malloc(DL::SIZEOF_LONG)
  mapname = "PageantRequest%08x\000" % Win.GetCurrentThreadId()
  filemap = Win.CreateFileMapping(Win::INVALID_HANDLE_VALUE, 
                                  Win::NULL,
                                  Win::PAGE_READWRITE, 0, 
                                  AGENT_MAX_MSGLEN, mapname)
  if filemap == 0 || filemap == Win::INVALID_HANDLE_VALUE
    raise Net::SSH::Exception,
      "Creation of file mapping failed"
  end
  ptr = Win.MapViewOfFile(filemap, Win::FILE_MAP_WRITE, 0, 0, 
                          0)
  if ptr.nil? || ptr.null?
    raise Net::SSH::Exception, "Mapping of file failed"
  end
  DL::CPtr.new(ptr)[0,query.size]=query
  cds = DL::CPtr.to_ptr [AGENT_COPYDATA_ID, mapname.size + 1, mapname].
    pack("LLp")
  succ = Win.SendMessageTimeout(@win, Win::WM_COPYDATA, Win::NULL,
                                cds, Win::SMTO_NORMAL, 5000, id)
  if succ > 0
    retlen = 4 + ptr.to_s(4).unpack("N")[0]
    res = ptr.to_s(retlen)
  end        
  return res
ensure
  Win.UnmapViewOfFile(ptr) unless ptr.nil? || ptr.null?
  Win.CloseHandle(filemap) if filemap != 0
end