cmd_ping.py 文件源码

def cmd_ping(ip, count, timeout, wait, verbose):

    conf.verb = False

    layer3 = IP()
    layer3.dst = ip
    layer3.tos = 0
    layer3.id = 1
    layer3.flags = 0
    layer3.frag = 0
    layer3.ttl = 64
    layer3.proto = 1 # icmp

    layer4 = ICMP()
    layer4.type = 8 # echo-request
    layer4.code = 0
    layer4.id = 0
    layer4.seq = 0

    pkt = layer3 / layer4

    counter = 0

    while True:
        ans = sr1(pkt, timeout=timeout)
        if ans:
            if verbose:
                ans.show()
            else:
                print(ans.summary())
            del(ans)
        else:
            print('Timeout')

        counter += 1

        if count != 0 and counter == count:
            break

        sleep(wait)

    return True