resolver.py 文件源码

def _gethostbyname_ex(name):
    aliases = []
    addresses = []
    tuples = _getaddrinfo(name, 0, socket.AF_INET, socket.SOCK_STREAM,
                          socket.SOL_TCP, socket.AI_CANONNAME)
    canonical = tuples[0][3]
    for item in tuples:
        addresses.append(item[4][0])
    # XXX we just ignore aliases
    return (canonical, aliases, addresses)