如何用Python将连续数据从服务器发送到客户端

Question

我正在构建一个用Python向客户端发送数据的服务器。我想不断地发送时间，直到客户端关闭连接。到目前为止，我已经完成了：

对于服务器：

import socket
from datetime import datetime
# take the server name and port name
host = 'local host'
port = 5001
# create a socket at server side
# using TCP / IP protocol
s = socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
# bind the socket with server
# and port number
s.bind(('', port))
# allow maximum 1 connection to
# the socket
s.listen(1)
# wait till a client accept
# connection
c, addr = s.accept()
# display client address
print("CONNECTION FROM:", str(addr))
dateTimeObj = str(datetime.now())
print(dateTimeObj)
c.send(dateTimeObj.encode())
# disconnect the server
c.close()

对于客户：

import socket
# take the server name and port name
host = 'local host'
port = 5001
# create a socket at client side
# using TCP / IP protocol
s = socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
# connect it to server and port
# number on local computer.
s.connect(('127.0.0.1', port))
# receive message string from
# server, at a time 1024 B
msg = s.recv(1024)
# repeat as long as message
# string are not empty
while msg:
print('Received date :' + msg.decode())
msg = s.recv(1024)
# disconnect the client
s.close()

如何修改服务器以连续发送当前日期？目前，服务器只发送一个日期并关闭连接。

Answer 1

您需要使用While True循环。

import socket
from datetime import datetime
# take the server name and port name
host = 'local host'
port = 5001
# create a socket at server side
# using TCP / IP protocol
s = socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
# bind the socket with server
# and port number
s.bind(('', port))
# allow maximum 1 connection to
# the socket
s.listen(1)
# wait till a client accept
# connection
while True:
c, addr = s.accept()
# display client address
print("CONNECTION FROM:", str(addr))
dateTimeObj = str(datetime.now())
print(dateTimeObj)
c.send(dateTimeObj.encode())
# disconnect the server
c.close()

客户端：

import socket
# take the server name and port name
host = 'local host'
port = 5001
# create a socket at client side
# using TCP / IP protocol
s = socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
# connect it to server and port
# number on local computer.
s.connect(('127.0.0.1', port))
# receive message string from
# server, at a time 1024 B
while True:
msg = s.recv(1024)
# repeat as long as message
# string are not empty
while msg:
print('Received date :' + msg.decode())
msg = s.recv(1024)
# disconnect the client
s.close()