Justin-刘清政的博客

1-Python中的GIL

2020-03-25

一、python单线程下实现多个socket并发

1.1 服务端

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
import sys
# import socket
import time
import gevent
from gevent import socket
from gevent import monkey

monkey.patch_all()


# 类似于python中的黑魔法,把很多模块的阻塞的变成非阻塞的,比如socket中的rece和send都变
# 为不阻塞了


def server(port):
s = socket.socket()
s.bind(("127.0.0.1", port))
s.listen(2000)
while True:
cli, add = s.accept()
gevent.spawn(handle_request, cli)
# 通过gevent的启动一个协程,把客户端的socket对象传进去


def handle_request(s):
try:
while True:
data = s.recv(1024)
print("收到的信息:", str(data, encoding="utf-8"))
s.send(data)
if not data:
s.shutdown(socket.SHUT_WR)
# 把和客户端这个链接销毁
except Exception as ex:
print(ex)
finally:
s.close()


if __name__ == '__main__':
server(8000)

1.2 客户端

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
import socket
import gevent
import threading
import multiprocessing
'''
ip_bind = ("127.0.0.1",8000)
c = socket.socket()
c.connect(ip_bind)
while True:
data = input("客户端:")
c.send(bytes(data,encoding="utf-8"))
data = c.recv(1024)
print("服务端:",str(data,encoding="utf-8"))

c.close()
'''
import socket
import gevent
ip_bind = ("127.0.0.1",8000)
c = socket.socket()
c.connect(ip_bind)
def f(n):
while True:
# c.send(bytes(n,encoding="utf-8"))
data = str(n)
c.send(bytes(data,encoding="utf-8"))
data = c.recv(1024)
print("server:",str(data,encoding="utf-8"))
c.close()
x = []
if __name__ == '__main__':
l = []
"""
多线程实现并发客户端
for i in range(500):
t = threading.Thread(target=f,args=[str(i),])
t.start()
l.append(t)
for t in l:
t.join()

"""
# 多进程实现并发客户端
for i in range(100):
p = multiprocessing.Process(target=f,args=[i,])
p.start()
l.append(p)
for p in l:
p.join()
Tags: Python
使用支付宝打赏
使用微信打赏

点击上方按钮,请我喝杯咖啡!

扫描二维码,分享此文章