闲来无事，用python写个客户端与服务器端应答的程序，主要原理就是客户端通过tcp协议与服务器端通信，客户端给服务器端发送指令，服务器执行指令后把相应的结果返回给客户端，客户端打印结果，代码比较简单，不详细介绍。纯属娱乐。
服务器端代码，server_tcp.py
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# #执行客户端发送过来的命令，并把执行结果返回给客户端
import socket, traceback, subprocess
host = ”
port = 51888
s = socket.socket(socket.af_inet, socket.sock_stream)
s.setsockopt(socket.sol_socket, socket.so_reuseaddr, 1)
s.bind((host, port))
s.listen(1)
while 1:
try:
client_socket, client_addr = s.accept()
except exception, e:
traceback.print_exc()
continue
try:
print ‘from host:’, client_socket.getpeername()
while 1:
command = client_socket.recv(4096)
if not len(command):
break
print client_socket.getpeername()[0] + ‘:’ + str(command)
# 执行客户端传递过来的命令
handler = subprocess.popen(command, shell=true, stdout=subprocess.pipe)
output = handler.stdout.readlines()
if output is none:
output = []
for one_line in output:
client_socket.sendall(one_line)
client_socket.sendall(“\n”)
client_socket.sendall(“ok”)
except exception, e:
traceback.print_exc()
try:
client_socket.close()
except exception, e:
traceback.print_exc()
2.客户端代码 client_tcp.py
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# #给server端发送命令
import socket, sys, traceback
host = ‘127.0.0.1’
port = 51888
s = socket.socket(socket.af_inet, socket.sock_stream)
try:
s.connect((host, port))
except exception, e:
msg = traceback.format_exc()
print ‘连接错误:’, msg
input_command = raw_input(‘input command:’)
s.send(input_command)
# 利用shutdown()函数使socket双向数据传输变为单向数据传输
# 该参数表示了如何关闭socket。具体为：0表示禁止将来读；1表示禁止将来写；2表示禁止将来读和写
s.shutdown(1)
print ‘发送完成.’
print ‘收到内容：\n’
while 1:
buff = s.recv(4096)
if not len(buff):
break
sys.stdout.write(buff)
3.启动server_tcp.py脚本，开始监听本机51888端口；接着启动client_tcp.py.
(1)客户端内容：
/usr/bin/python2.7 /home/wuguowei/pycharmprojects/xplan_script/test_process/client_tcp.py
input command:ls -l
发送完成.
收到内容：
总用量 20
-rw-r–r– 1 root root 744 2月 10 14:44 client_tcp.py
-rw-r–r– 1 root root 877 2月 10 14:18 my_sub_process.py
-rw-r–r– 1 root root 1290 2月 10 14:45 server_tcp.py
-rw-r–r– 1 root root 493 2月 10 10:43 tcpclient.py
-rw-r–r– 1 root root 1168 2月 10 11:51 tcpserver.py
ok
process finished with exit code 0
（2）服务器端信息
/usr/bin/python2.7 /home/wuguowei/pycharmprojects/xplan_script/test_process/server_tcp.py
from host: (‘127.0.0.1’, 46993)
127.0.0.1:ls -l