--- UNIXSocket.pair([type[, protocol]])  ruby 1.7 feature
--- UNIXSocket.socketpair([type[, protocol]])  ruby 1.7 feature
    ߤ˷礵줿UNIXåȤΥڥޤ2Ǥ֤ޤ
    type ά줿硢Socket::SOCK_STREAM Ȥޤ
    protocol ά줿硢0 Ȥޤ

