day09_python socket ssh交互

1.a.accept() 和a.recv()都是阻塞的，基于链接正常

3.s.listen(n)代表能挂起的链接数，如果n等于1代表可以链接一个，挂起一个，就是后面可以排队等一个，第三个拒绝

4.

以上是服务端代码

#__author__ = 'DouYunQian'
 #coding=utf-8
 import socket
 client=socket.socket()
 ip_addr=("127.0.0.1",9958)
 client.connect(ip_addr)
 while True:
     data=input("cmd   >>>")
     if len(data)==0:continue
     if data=="exit":break
     client.sendall(bytes(data,encoding="utf-8"))
     rec_data=client.recv(1024)
     print(str(rec_data,"utf-8"))
     
     
 client.close()

客户端代码如下：

#__author__ = 'DouYunQian'
 #coding=utf-8


 #
 #  python模拟ssh交互
 #
 import socket,subprocess
 from sys import stdout
 server_po=socket.socket()
 ip_addr=("127.0.0.1",9958)
 server_po.bind(ip_addr)
 server_po.listen(5)
 while True:
     con,addr=server_po.accept()
     while True:
         try:
             rece_data=con.recv(1024)
             if len(rece_data)==0:break
             p=subprocess.Popen(str(rece_data,"utf-8"),shell=True,stdout=subprocess.PIPE)
             win_data=p.stdout.read()
             if len(win_data)==0:
                 send_data="cmd error"
             else:
                 send_data=str(win_data,encoding="gbk")
             con.sendall(bytes(send_data,encoding="utf-8"))
         except Exception:
             break
     con.close()
 server_po.close()