add function for get fd
add function for get fd

xinst/NoahGameFrame,zh423328/NFServer,xinst/NoahGameFrame,xinst/NoahGameFrame,zh423328/NFServer,zh423328/NFServer,zh423328/NFServer,zh423328/NFServer,zh423328/NFServer,zh423328/NFServer,xinst/NoahGameFrame,zh423328/NFServer,xinst/NoahGameFrame,xinst/NoahGameFrame,xinst/NoahGameFrame,xinst/NoahGameFrame,xinst/NoahGameFrame