[英]Invalid port in python sockets
尝试使用以下代码段发送裸ICMP消息时出现错误:
Windows表示此端口对于给定的IP范围无效。
def send_ping(source_ip,target_ip,data_function=construct_icmp_echo):
fail = 0
skt_send = socket.socket(socket.AF_INET,socket.SOCK_RAW,socket.IPPROTO_ICMP)
skt_recv = socket.socket(socket.AF_INET,socket.SOCK_RAW,socket.IPPROTO_ICMP)
(src_binary,) = struct.unpack (">L",socket.inet_aton(source_ip))
(tgt_binary,) = struct.unpack (">L",socket.inet_aton(source_ip))
skt_send.setsockopt(socket.SOL_IP, socket.IP_TTL, 16)
ipheader = struct.pack("BBHHHBBHLL",0x54,0xdc,48,50,8,16,1,0,src_binary,tgt_binary)
cksum = icmpcksum(ipheader)
ipheader = ipheader = struct.pack("BBHHHBBHLL",0x54,0xdc,48,50,8,16,1,cksum,src_binary,tgt_binary)
skt_send.sendto(data_function(),(target_ip,22433))
skt_recv.bind((target_ip,22433))
skt_recv.settimeout(5)
thetime = datetime.datetime.now()
try:
s = datetime.datetime.now()
while time.time - s < 60:
a = skt_recv.recvfrom(1024)[0]
hdr_reply = a[20:]
icmp_type = a[20]
if icmp_type == 0 :
print ("got a ping")
fl = True
return target_ip
if fl: break
except socket.timeout as e:
raise e
return
此处: skt.recv_bind((target_ip,22433))
我提供的IP地址是B级和C级IP地址。
我得到此回溯:
File "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensio
ns\Microsoft\Python Tools for Visual Studio\2.2\visualstudio_py_launcher.py", li
ne 78, in <module>
vspd.debug(filename, port_num, debug_id, debug_options, run_as)
File "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensio
ns\Microsoft\Python Tools for Visual Studio\2.2\visualstudio_py_debugger.py", li
ne 2465, in debug
exec_file(file, globals_obj)
File "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensio
ns\Microsoft\Python Tools for Visual Studio\2.2\visualstudio_py_util.py", line 1
11, in exec_file
exec_code(code, file, global_variables)
File "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensio
ns\Microsoft\Python Tools for Visual Studio\2.2\visualstudio_py_util.py", line 8
7, in exec_code
exec(code_obj, global_variables)
File "C:\Users\user\Documents\Visual Studio 2015\Projects\python-ipscan\python
-ipscan\python_ipscan.py", line 86, in <module>
if __name__=="__main__": main ()
File "C:\Users\user\Documents\Visual Studio 2015\Projects\python-ipscan\python
-ipscan\python_ipscan.py", line 83, in main
send_ping (myaddr,"""155.223.197.1""",construct_icmp_echo)
File "C:\Users\user\Documents\Visual Studio 2015\Projects\python-ipscan\python
-ipscan\python_ipscan.py", line 70, in send_ping
traceback.print_stack()
Traceback (most recent call last):
File "C:\Users\user\Documents\Visual Studio 2015\Projects\python-ipscan\python
-ipscan\python_ipscan.py", line 86, in <module>
if __name__=="__main__": main ()
File "C:\Users\user\Documents\Visual Studio 2015\Projects\python-ipscan\python
-ipscan\python_ipscan.py", line 84, in main
traceback.extract_tb(sys.exc_info())
File "C:\Program Files\Python34\lib\traceback.py", line 106, in extract_tb
return list(_extract_tb_iter(tb, limit=limit))
File "C:\Program Files\Python34\lib\traceback.py", line 59, in _extract_tb_or_
stack_iter
f, lineno, next_item = extractor(curr)
AttributeError: 'tuple' object has no attribute 'tb_frame'
用户代码OSError was unhandled by user code Message: [WinError 10049] Invalid request for given address
时发生异常:用户代码OSError was unhandled by user code Message: [WinError 10049] Invalid request for given address
您正在尝试在接收套接字绑定端口之前将其发送到端口22433。 因此, skt_send.sendto()
调用正尝试发送到不存在的端点-在该调用时,端口22433上没有任何监听。尝试将skt_recv.bind()
调用放在其前面。
查看解释器给出的回溯将是有帮助的,因为对于错误只有模糊的描述,我们必须猜测出了什么问题。
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