如何在python中从客户端向服务器发送消息
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How to send a message from client to server in python
提问by Stamatis Papadopoulos
I'm reading two programs in Python 2.7.10 with client and server. How can I modify these programs in order to send a message from client to server?
我正在使用客户端和服务器阅读 Python 2.7.10 中的两个程序。如何修改这些程序以将消息从客户端发送到服务器？
server.py:
服务器.py：
#!/usr/bin/python # This is server.py file
import socket # Import socket module
s = socket.socket() # Create a socket object
host = socket.gethostname() # Get local machine name
port = 12345 # Reserve a port for your service.
s.bind((host, port)) # Bind to the port
s.listen(5) # Now wait for client connection.
while True:
c, addr = s.accept() # Establish connection with client.
print 'Got connection from', addr
c.send('Thank you for connecting')
c.close() # Close the connection
client.py:
客户端.py：
#!/usr/bin/python # This is client.py file
import socket # Import socket module
s = socket.socket() # Create a socket object
host = socket.gethostname() # Get local machine name
port = 80 # Reserve a port for your service.
s.connect((host, port))
print s.recv(1024)
s.close # Close the socket when done
回答by Daniel
TCP sockets are bi-directional. So, after connection, there is no difference between server and client, you only have two ends of a stream:
TCP 套接字是双向的。因此，连接后，服务器和客户端之间没有区别，您只有一个流的两端：
import socket # Import socket module
s = socket.socket() # Create a socket object
s.bind(('0.0.0.0', 12345)) # Bind to the port
s.listen(5) # Now wait for client connection.
while True:
c, addr = s.accept() # Establish connection with client.
print 'Got connection from', addr
print c.recv(1024)
c.close() # Close the connection
and the client:
和客户：
import socket # Import socket module
s = socket.socket() # Create a socket object
s.connect(('localhost', 12345))
s.sendall('Here I am!')
s.close() # Close the socket when done
回答by Hari
The above answer throws an error: TypeError: a bytes-like object is required, not 'str'However, the following code worked for me:
上面的答案会引发错误：TypeError: a bytes-like object is required, not 'str'但是，以下代码对我有用：
server.py
服务器.py
import socket
import sys
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
port = 3125
s.bind(('0.0.0.0', port))
print ('Socket binded to port 3125')
s.listen(3)
print ('socket is listening')
while True:
c, addr = s.accept()
print ('Got connection from ', addr)
print (c.recv(1024))
c.close()
client.py:
客户端.py：
import socket
s = socket.socket()
port = 3125
s.connect(('localhost', port))
z = 'Your string'
s.sendall(z.encode())
s.close()
