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通过一次连接即可获得 Netcat 输出、处理和输入

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通过一次连接即可获得 Netcat 输出、处理和输入

假设我这样做nc example.com 1234，它会返回两个用换行符分隔的数字，我必须将它们相加并重新输入。如果我关闭连接，数字会发生变化，那么我该如何在一个连接中获取 netcat 的输出、对其进行计算并再次输入呢？

答案1

对于有同样问题的人来说，使用python 套接字。

一些可以解决该问题的示例代码：

import socket

#AF_INET for IPv4, SOCK_STREAM for TCP (as opposed to UDP).
clientsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Tell the socket what IP and port number to connect to (must be in two brackets because it needs a tuple).
clientsocket.connect(('example.com', 1234))

#Recieve 1024 bytes of data.
data = clientsocket.recv(1024)

#Split the recieved data by newlines (returns a list).
data = data.split('\n')

#The first and second elements in our list should be the two numbers we need to add together, so we do that.
result = int(data[0]) + int(data[1])

#Send our result to the server.
clientsocket.send(str(result))

#Recieve any response from the server and print it to the screen.
data = clientsocket.recv(1024)
print data

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