Python學習之路 socket實現ssh

服務端

#

#sock_server_ssh
import
socket,os
server =socket.socket()
server.bind((
'localhost
',9999))
server.listen()
while
true:
print("
接收新指令")
conn,addr =server.accept()
print("
new conn:
",addr)
while
true:
data = conn.recv(1024)
ifnot
data:
print("
客戶端已斷開")
break
print("
執行指令:
",data)
cmd_res = os.popen(data.decode()).read()#
接受字串，執行結果也是字串
print("
before send
",len(cmd_res))
if len(cmd_res) ==0:
cmd_res = "
cmd has no output...
"conn.send(str(len(cmd_res)).encode(
"utf-8
"))#
先發大小給客戶端
conn.send(cmd_res.encode("
utf-8"))
print("
send done")
server.close()

客戶端

1

##socket_server_client23
import
socket
4 client =socket.socket()
5 client.connect(("
localhost
",9999))67
while
true:
8 cmd = input("
>>:
").strip()
9if len(cmd) ==0:continue
10 client.send(cmd.encode('
utf-8'))
11 cmd_res_size = client.recv(1024)#
接收命令結果的長度
12print("
命令結果大小:
",cmd_res_size)
13 received_size =014#
received_data = b''
15while received_size 
1617 data = client.recv(1024)
18 received_size += len(data)#
每次收到的有可能小於1024，所以必須用len判斷19#
print(data.decode())
20print
(received_size)
21else:22
print("
cmd res receive done...
",received_size)
2324
#cmd_res = client.recv(1024)
2526
#print(cmd_res)
2728 client.close()

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