我在run.py脚本中有以下内容。Python - 无法识别的参数错误与警告消息
import time
NUM_PACKETS = 500
import random
import argparse
import threading
from scapy.all import sniff
from scapy.all import Ether, IP, IPv6, TCP
parser = argparse.ArgumentParser(description='run_test.py')
parser.add_argument('--random-dport',
help='Use a random TCP dest port for each packet',
action="store_true", default=False)
args = parser.parse_args()
class PacketQueue:
def __init__(self):
self.pkts = []
self.lock = threading.Lock()
self.ifaces = set()
def add_iface(self, iface):
self.ifaces.add(iface)
def get(self):
self.lock.acquire()
if not self.pkts:
self.lock.release()
return None, None
pkt = self.pkts.pop(0)
self.lock.release()
return pkt
def add(self, iface, pkt):
if iface not in self.ifaces:
return
self.lock.acquire()
self.pkts.append((iface, pkt))
self.lock.release()
queue = PacketQueue()
def pkt_handler(pkt, iface):
if IPv6 in pkt:
return
queue.add(iface, pkt)
class SnifferThread(threading.Thread):
def __init__(self, iface, handler = pkt_handler):
threading.Thread.__init__(self)
self.iface = iface
self.handler = handler
def run(self):
sniff(
iface = self.iface,
prn = lambda x: self.handler(x, self.iface)
)
class PacketDelay:
def __init__(self, bsize, bdelay, imin, imax, num_pkts = 100):
self.bsize = bsize
self.bdelay = bdelay
self.imin = imin
self.imax = imax
self.num_pkts = num_pkts
self.current = 1
def __iter__(self):
return self
def next(self):
if self.num_pkts <= 0:
raise StopIteration
self.num_pkts -= 1
if self.current == self.bsize:
self.current = 1
return random.randint(self.imin, self.imax)
else:
self.current += 1
return self.bdelay
pkt = Ether()/IP(dst='10.0.0.1', ttl=64)/TCP()
port_map = {
1: "veth3",
2: "veth5",
3: "veth7"
}
iface_map = {}
for p, i in port_map.items():
iface_map[i] = p
queue.add_iface("veth3")
queue.add_iface("veth5")
for p, iface in port_map.items():
t = SnifferThread(iface)
t.daemon = True
t.start()
import socket
send_socket = socket.socket(socket.AF_PACKET, socket.SOCK_RAW,
socket.htons(0x03))
send_socket.bind((port_map[3], 0))
delays = PacketDelay(10, 5, 25, 100, NUM_PACKETS)
ports = []
print "Sending", NUM_PACKETS, "packets ..."
for d in delays:
# sendp is too slow...
# sendp(pkt, iface=port_map[3], verbose=0)
if args.random_dport:
pkt["TCP"].dport = random.randint(1025, 65535)
send_socket.send(str(pkt))
time.sleep(d/1000.)
time.sleep(1)
iface, pkt = queue.get()
while pkt:
ports.append(iface_map[iface])
iface, pkt = queue.get()
print ports
print "DISTRIBUTION..."
for p in port_map:
c = ports.count(p)
print "port {}: {:>3} [ {:>5}% ]".format(p, c, 100. * c/NUM_PACKETS)
我尝试使用以下命令
./run_test.py '--random-dport' 2
它投掷一个无法识别的参数误差并显示以下消息运行脚本。
[email protected]:~/p4lang/tutorials/workshop_/mp$ sudo ./run.py 2
WARNING: No route found for IPv6 destination :: (no default route?)
usage: run.py [-h] [--random-dport]
run_test.py: error: unrecognized arguments: 2
[email protected]:~/p4lang/tutorials/workshop/mp$
这里有什么问题。我假设其余的run.py代码很好,问题在于以上几行。如果需要,我可以添加其余的代码。我很长时间以来一直坚持这一点。任何投入将帮助我!
为什么'--random-dport'在您的命令行中引号?它不应该被需要。只要'./run_test.py --random-dport 2'' – River
另外,什么是'2'? –
@KlausD。我已经更新了这个问题,以反映我正在尝试做的事情。我试图通过端口“2”发送数据包数据,但它在我的情况下通过数据包1不是预期的,因此尝试使用在其中一个帖子中建议的“--random-dport”,但它失败并报错。 – Atom