Server_v1:

---

缺陷是服务端只能接收一次请求就关闭链接了

[root@ChangerLee 模拟Http服务器返回状态]# cat server_test_v1.py 

!/bin/env python
#import socket

sk = socket.socket()
ip_port = ('127.0.0.1',9999)
sk.bind(ip_port)
sk.listen(5)

clisock,clieaddr = sk.accept()
clisock.send('hello')
clisock.close()

[root@ChangerLee 模拟Http服务器返回状态]# python server_test_v1.py &
[1] 11057

[root@ChangerLee 模拟Http服务器返回状态]# netstat -antple|grep "9999"
tcp        0      0 127.0.0.1:9999          0.0.0.0:*               LISTEN      0          88903      11057/python    

---

Client_v1

---

[root@ChangerLee 模拟Http服务器返回状态]# cat client_test_v1.py 

#!/bin/env python
import socket

clisock = socket.socket() 
ip_port = ('127.0.0.1',9999)

clisock.connect(ip_port)
data = clisock.recv(1024)
print data

[root@ChangerLee 模拟Http服务器返回状态]# python client_test_v1.py 
hello

---

Server_v2:

---

多次建立TCP链接，进行通信

[root@ChangerLee 模拟Http服务器返回状态]# cat server_test_v2.py

#!/bin/env python
import socket

sk = socket.socket()
ip_port = ('127.0.0.1',9999)
sk.bind(ip_port)
sk.listen(5)

while True:
    clisock,clieaddr = sk.accept()
    clisock.send('hello')
    clisock.close()

[root@ChangerLee 模拟Http服务器返回状态]# python server_test_v2.py 

---

Client_v2

---

[root@ChangerLee 模拟Http服务器返回状态]# cat client_test_v2.py 

#!/bin/env python
import socket

clisock = socket.socket() 
ip_port = ('127.0.0.1',9999)

clisock.connect(ip_port)
data = clisock.recv(1024)
print data

[root@ChangerLee 模拟Http服务器返回状态]# python client_test_v2.py 
hello
[root@ChangerLee 模拟Http服务器返回状态]# python client_test_v2.py 
hello
[root@ChangerLee 模拟Http服务器返回状态]# python client_test_v2.py 
hello

---

Server_v3:

---

套接字属性查看

[root@ChangerLee 模拟Http服务器返回状态]# cat server_test_v1.py 

#!/bin/env python
import socket
sk = socket.socket()
ip_port = ('127.0.0.1',9999)
sk.bind(ip_port)
sk.listen(5)

while True:
    clisock,cliaddr = sk.accept()
    print (sk)
    print (clisock)
    print (cliaddr)
    clisock.send('hello')
    clisock.close()

[root@ChangerLee 模拟Http服务器返回状态]# python server_test_v3.py 
<socket._socketobject object at 0x7f7fe9c533d0>
<socket._socketobject object at 0x7f7fe9c53440>
('127.0.0.1', 43454)

其时sk.accept()返回的是一个元组类型（<socket._socketobject object at 0x7f7fe9c53440>
，('127.0.0.1', 43454)）

---

Server_v4:

---

该c/s对话通信:缺陷再与客户端不能直接退出

[root@ChangerLee 模拟Http服务器返回状态]# cat server_test_v4.py 

#!/bin/env python
#coding=utf-8
import socket
sk = socket.socket()
ip_port = ('127.0.0.1',9999)
sk.bind(ip_port)
sk.listen(5)

while True:
    clisock,cliaddr = sk.accept()
    clisock.send('hello')
    flag = True

    while flag:
#不直接用break的原因是在多层循环的中break跳出循环会出现问题
        data = clisock.recv(1024)
        #接收方法recv也是阻塞的
        print ('from client:'+data)
        if data == 'exit':
            flag = False
        clisock.send('sb')

    clisock.close()

[root@ChangerLee 模拟Http服务器返回状态]# python server_test_v4.py 
from client:hello
from client:exit

直接卡住。。。。。。

Client_v4

[root@ChangerLee 模拟Http服务器返回状态]# cat  client_test_v4.py 

#!/bin/env python
import socket

clisock = socket.socket() 
ip_port = ('127.0.0.1',9999)

clisock.connect(ip_port)
while True:
    data = clisock.recv(1024)
    inp = raw_input('client>')
    clisock.send(inp)
    print ('getinfo:',data)

[root@ChangerLee 模拟Http服务器返回状态]# python  client_test_v4.py 
client>hello
('getinfo:', 'hello')
client>exit
('getinfo:', 'sb')
client>exit
('getinfo:', 'sb')
client>exit
Traceback (most recent call last):
  File "client_test_v2.py", line 11, in <module>
    clisock.send(inp)
socket.error: [Errno 32] Broken pipe

socket.error: [Errno 32] Broken pipe往往是客户端异常断开造成的

---

Server_v5:

---

[root@ChangerLee 模拟Http服务器返回状态]# cat server_test_v5.py 

#!/bin/env python
#coding=utf-8
import socket
sk = socket.socket()
ip_port = ('127.0.0.1',9999)
sk.bind(ip_port)
sk.listen(5)

while True:
    clisock,cliaddr = sk.accept()
    clisock.send('hello')
    flag = True

    while flag:
        data = clisock.recv(1024)
        print ('from client:'+data)
        if data == 'exit':
            flag = False
        clisock.send('sb')

    clisock.close()

[root@ChangerLee 模拟Http服务器返回状态]# python server_test_v5.py 
from client:hello
from client:exit
from client:come again
from client:exit

Client_v5:

最终版本

[root@ChangerLee 模拟Http服务器返回状态]# cat client_test_v5.py 

#!/bin/env python
import socket

clisock = socket.socket() 
ip_port = ('127.0.0.1',9999)

clisock.connect(ip_port)
while True:
    data = clisock.recv(1024)
    inp = raw_input('client>')
    clisock.send(inp)
    print ('getinfo:',data)
    if inp == 'exit':
        break

[root@ChangerLee 模拟Http服务器返回状态]# python  client_test_v5.py 
client>hello
('getinfo:', 'hello')
client>exit
('getinfo:', 'sb')
[root@ChangerLee 模拟Http服务器返回状态]# python  client_test_v5.py 
client>come again
('getinfo:', 'hello')
client>exit
('getinfo:', 'sb')