ping.py 文件源码

def _create_socket(self):
        try:
            socket.inet_pton(socket.AF_INET, self.dest)
            dest_ip = self.dest
        except socket.error:
            try:
                dest_ip = socket.gethostbyname(self.dest)
            except socket.gaierror:
                self.ret_code = EXIT_STATUS.ERROR_HOST_NOT_FOUND
                return
        self.dest_ip = dest_ip

        try:
            self.sock = socket.socket(socket.AF_INET, socket.SOCK_RAW,
                                      socket.getprotobyname("icmp"))
        except socket.error as e:
            if e.errno == 1:
                self.ret_code = EXIT_STATUS.ERROR_ROOT_REQUIRED
            else:
                self.ret_code = EXIT_STATUS.ERROR_CANT_OPEN_SOCKET
            return