从网上找的 ping 源代码

            
            # create the IPv6/IPv4 socket
            if ipv6:
                # can not create a raw socket if not root or setuid to root
                try:
                    pingSocket = socket.socket(socket.AF_INET6, socket.SOCK_RAW, \
                                               socket.getprotobyname("ipv6-icmp"))
                except socket.error, e:
                    print "socket error: %s" % e
                    _error("You must be root (uses raw sockets)" % os.path.basename(sys.argv[0]))
                    
            # IPv4
            else:
                # can not create a raw socket if not root or setuid to root
                try:
                    pingSocket = socket.socket(socket.AF_INET, socket.SOCK_RAW, \
                                               socket.getprotobyname("icmp"))
                except socket.error, e:
                    print "socket error: %s" % e

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TAG标签:	源代码 网上 _error size print else: node str packet