Question

所以我一直在尝试使用书中的指令将粗tcp客户端的数据包发送到原始tcp服务器（我有很少的python经验，但我确实有编程经验）。但是，每当我尝试发送数据包时，它有时会发生错误：

Tcp客户端：

import socket

target_host = "0.0.0.0"
target_port = 9999

# create a socket object
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

#connect the client
client.connect((target_host,target_port))

#send some data
client.send("GET / HTTP/1.1\nHost: google.com\r\n\r\n")

#recieve some data
response = client.recv(4096)

print response

Tcp服务器：

import socket
import threading

bind_ip = "0.0.0.0"
bind_port = 9999

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

server.bind((bind_ip,bind_port))

server.listen(5)

print "[*] Listening on %s:%d" % (bind_ip,bind_port)

# this is our client handeling thread
def handle_client(client_socket):
    # priint out what client says
    request = client_socket.recv(1024)

    print "[*] Recieved %s" % request

    #send back a packet
    client_socket.send("ACK!")

    client_socket.close()


while True:
    client,addr = server.accept()

    print "[*] Accepted connection from %s:%d" % (addr[0],addr[1])

    # spin up on our client thread to handle incoming data
    client_handler = threading.Thread(target=handle_client,args=(client,))
    client_handler.start()

错误：

[GCC 5.3.1 20151205]
Python Type "help", "copyright", "credits" or "license" for more information.
[evaluate TCP client.py]
Traceback (most recent call last):
  File "/root/TCP client.py", line 10, in <module>
    client.connect((target_host,target_port))
  File "/usr/lib/python2.7/socket.py", line 228, in meth
    return getattr(self._sock,name)(*args)
socket.error: [Errno 111] Connection refused

我该怎么办？

我试图将测试数据包发送到原始tcp服务器，但我一直遇到socket.py错误，我不知道如何解决它

0 个答案: