协程-基于TCP的高并发通信

from gevent import monkey;monkey.patch_all()
from socket import *
import gevent
def sever(ipport):
    s = socket(AF_INET,SOCK_STREAM)
    s.setsockopt(SOL_SOCKET,SO_REUSEADDR,1)
    s.bind(ipport)
    s.listen(5)
    while True:
        cnn, addr = s.accept()
        print('%s is from %s'%(cnn, addr))
        gevent.spawn(talk, cnn,addr)
    s.close()
def talk(cnn,addr):
    while True:
        try:
            res = cnn.recv(1024).decode('utf-8')
            cnn.send(res.upper().encode('utf-8'))
        except Exception:break
    cnn.close()

if __name__ == '__main__':
    ipport = ('127.0.0.1', 8080,)
    sever(ipport)

from socket import *
from threading import Thread
def client(ipport):
    c = socket(AF_INET,SOCK_STREAM)
    c.connect(ipport)
    while True:
        try:
            # res = input('>>').strip()
            # if not res:continue
            res = 'hello'
            c.send(res.encode('utf-8'))
            ree = c.recv(1024).decode('utf-8')
            print(ree)
        except Exception:break
    c.close()

if __name__ == '__main__':
        ipport = ('127.0.0.1',8080,)
        for i in range(500):
            t = Thread(target=client,args=(ipport,))
            t.start()

由于协程的作用及其轻量化，使高并发（看起来是高并发）实现起来简单快捷，至少我的电脑（8核核多了也没用，只有一个线程，10000个核也只能用一个核运行）能开1024个线程去访问服务端开的协程（客户端之所以不用协程实验是因为看不出效果，感觉跟串行似的）