python网络编程--socket简单实现
python网络编程
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一、客户端控制服务端执行命令
server：
#!/usr/local/python3/bin/python3.6
#-*- coding:utf-8 -*-
#AUTH:FJC
from socket import *
from time import ctime
import subprocess
HOST = '' #HOST变量空白，表示可以使用任何地址
PORT = 21567
BUFSIZ = 1024 #缓冲区大小为1KB
ADDR = (HOST,PORT)
tcp_ser_sock = socket(AF_INET,SOCK_STREAM) #创建套接字对象，AF_INET表示面向网络的，SOCK_STREAM表示用于TCP传输的套接字类型
tcp_ser_sock.bind(ADDR) #将地址（主机名、端口号对）绑定到套接字上
tcp_ser_sock.listen(5) #设置并启动TCP 监听器，listen的参数表示连接被转接或拒绝之前，传入连接请求的最大数
while True:
print('waiting for connecting...')
tcp_cli_sock,addr = tcp_ser_sock.accept() #返回一个socket对象和属于客户端的套接字
print('...connect from:',addr)
while True:
try:
data = str(tcp_cli_sock.recv(BUFSIZ),'utf8')
except Exception:
break
if not data:
continue
obj = subprocess.Popen(data,shell=True,stdout=subprocess.PIPE)
result = obj.stdout.read()
tcp_cli_sock.send(bytes(str(len(result)),'utf8'))
tcp_cli_sock.recv(BUFSIZ) #解决粘包现象
tcp_cli_sock.send(result)
tcp_cli_sock.close()
tcp_ser_sock.close()client：
#-*- coding:utf-8 -*-
#AUTH:FJC
from socket import *
from sys import exit
HOST = '127.0.0.1'
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST,PORT)
tcp_cli_sock = socket(AF_INET,SOCK_STREAM)
tcp_cli_sock.connect(ADDR)
while True:
data = input('command>')
if not data:
continue
elif data == ("exit" or "quit"):
exit(1)
tcp_cli_sock.send(bytes(data,'utf8'))
result_len=str(tcp_cli_sock.recv(BUFSIZ),'utf8')
tcp_cli_sock.send(bytes(1))
result = bytes()
while len(result) != int(result_len):
data_rec = tcp_cli_sock.recv(BUFSIZ)
result += data_rec
print(str(result,'gbk'))
# tcp_cli_sock.close()二、文件上传下载
server：
#-*- coding:utf-8 -*-
#AUTH:FJC
from socket import *
import os
HOST = ''
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST,PORT)
tcp_ser_sock = socket(AF_INET,SOCK_STREAM)
tcp_ser_sock.bind(ADDR)
tcp_ser_sock.listen(5)
BASE_DIR=os.path.dirname(os.path.abspath(__file__))
def upload():
file_size = str(tcp_cli_sock.recv(BUFSIZ), 'utf8')
file_size = int(file_size)
file_recv = 0
with open(path, 'ab') as f:
while file_recv != file_size:
data = tcp_cli_sock.recv(BUFSIZ)
f.write(data)
file_recv += len(data)
def download():
file_size = os.stat(path).st_size
tcp_cli_sock.send(bytes(str(file_size), 'utf8'))
file_send = 0
with open(path, 'rb') as f:
while file_send != file_size:
data = f.read(1024)
tcp_cli_sock.send(data)
file_send += len(data)
if __name__ == '__main__':
while True:
print('waiting for connecting...')
tcp_cli_sock, addr = tcp_ser_sock.accept()
print('...connect from:', addr)
try:
up_down_info = str(tcp_cli_sock.recv(BUFSIZ), 'utf8')
cmd, path = up_down_info.split('|')
filename = os.path.basename(path)
path = os.path.join(BASE_DIR, 'server_dir', filename)
if cmd == 'get':
download()
elif cmd == 'post':
upload()
except Exception:
continue
tcp_cli_sock.close()client：
#-*- coding:utf-8 -*-
#AUTH:FJC
from socket import *
from sys import exit
import os
HOST = '127.0.0.1'
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST,PORT)
BASE_DIR=os.path.dirname(os.path.abspath(__file__))
def get():
file_size = str(tcp_cli_sock.recv(BUFSIZ), 'utf8')
print(type(file_size))
file_size = int(file_size)
file_recv = 0
with open(path, 'ab') as f:
while file_recv != file_size:
data = tcp_cli_sock.recv(BUFSIZ)
f.write(data)
file_recv += len(data)
print("文件下载成功！")
def post():
file_size = os.stat(path).st_size
tcp_cli_sock.send(bytes(str(file_size), 'utf8'))
file_send = 0
with open(path, 'rb') as f:
while file_send != file_size:
data = f.read(1024)
tcp_cli_sock.send(data)
file_send += len(data)
print("文件上传成功！")
if __name__ == '__main__':
while True:
tcp_cli_sock = socket(AF_INET, SOCK_STREAM)
tcp_cli_sock.connect(ADDR)
command = input('(command|file)>')
if not command:
continue
elif command == "exit" or command == "quit":
exit(1)
cmd,path = command.split('|')
up_down_info = '%s|%s' % (cmd, path)
filename = os.path.basename(path)
tcp_cli_sock.send(bytes(up_down_info, 'utf8'))
path = os.path.join(BASE_DIR, filename)
if cmd == 'get':
get()
if cmd == 'post':
post()
tcp_cli_sock.close()网络编程基础知识
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