当我在windows(同一系统中的客户机和服务器)中运行代码时,我收到了意外的udp数据包。我的客户机是用c语言编写的,服务器是用python语言编写的。你知道吗
当我在mac中运行相同的代码时,我没有任何问题,我收到了预期的消息(这里我在mac中为udp打开了一个端口)。你知道吗
客户(c#):
public static void Main(string[] args)
{
Console.WriteLine("Receiver");
// This constructor arbitrarily assigns the local port number.
UdpClient udpClient = new UdpClient();
//udpClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
udpClient.Client.Bind(new IPEndPoint(IPAddress.Any, 137));
try
{
//IPEndPoint object will allow us to read datagrams sent from any source.
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 137);
string message ;
do
{
// Blocks until a message returns on this socket from a remote host.
Byte[] receiveBytes = udpClient.Receive(ref RemoteIpEndPoint);
message = Encoding.ASCII.GetString(receiveBytes);
// Uses the IPEndPoint object to determine which of these two hosts responded.
Console.WriteLine("This is the message you received: " +
message);
//Console.WriteLine("This message was sent from " +
// RemoteIpEndPoint.Address.ToString() +
// " on their port number " +
// RemoteIpEndPoint.Port.ToString());
}
while (message != "exit");
udpClient.Close();
//udpClientB.Close();
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
Console.WriteLine("Press Any Key to Continue");
Console.ReadKey();
}
服务器(python-3.6):
import socket
from time import sleep
rx=0 #000
ry=0 #000
rz=0 #000
e=0 #000
UDP_IP = "172.20.10.4"
UDP_PORT = 137
MESSAGE = ""
sock = socket.socket(socket.AF_INET, # Internet
socket.SOCK_DGRAM) # UDP
while(1):
if (rx<360):
rx=rx+1
if ((ry<360) & (rx>=360)):
ry=ry+1
if ((rx>=360) & (ry>=360)):
rx=0
ry=0
if (rz<360):
rz=rz+1
if (rz>=360):
rz = 0
if (e<10):
e=e+1
if(e>=10):
e=0
#verify rx
if (rx<10):
rxs='00'+str(rx)
if ((rx>=10) & (rx<100)):
rxs='0'+str(rx)
if (rx>=100):
rxs=str(rx)
#verify ry
if (ry<10):
rys='00'+str(ry)
if ((ry>=10) & (ry<100)):
rys='0'+str(ry)
if (ry>=100):
rys=str(ry)
#verify rz
if (rz<10):
rzs='00'+str(rz)
if ((rz>=10) & (rx<100)):
rzs='0'+str(rz)
if (rz>=100):
rzs=str(rz)
#verify e
if (e<10):
es='00'+str(e)
if ((e>=10) & (e<100)):
es='0'+str(e)
if (e>=100):
es=str(e)
MESSAGE = 'h'+'01'+'rx'+rxs+'ry'+rys+'rz'+rzs+'e'+es
#sock.sendto(MESSAGE, (UDP_IP, UDP_PORT))
sock.sendto(bytes(MESSAGE, "utf-8"), (UDP_IP, UDP_PORT))
sleep(0.1)
预期消息(我在mac中收到以下消息):
这是您收到的消息:h01rx360ry151rz009e007
我在windows中收到以下信息:
This is the message you received: ?{ EJFDEBFEEBFACACACACACACACACACAAA
有人能告诉我哪里出了问题吗。你知道吗
提前谢谢
如果udp数据包与您的服务器没有关联,这可能会很有帮助:https://forum.fortinet.com/tm.aspx?m=106656这里:https://superuser.com/questions/637696/what-is-netbios-does-windows-need-its-ports-137-and-138-open
Windows正在使用端口137提供自己的服务。尝试更改Windows设备上的端口。你知道吗
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