单线程下实现并发的套接字

from gevent import monkey;monkey.patch_all()
from socket import *
from gevent import spawn #导入spawn之前一定要传入monkey
#俩个io密集型任务
def comun(conn):
    while True: # 链接循环
        try:
            data = conn.recv(1024)
            if len(data) == 0: break
            conn.send(data.upper())
        except ConnectionResetError:
            break
    conn.close()

def server(ip,port,backlog=5):
    server=socket(AF_INET,SOCK_STREAM)
    server.bind((ip,port))
    server.listen(backlog)

    while True:  # 链接循环
        conn,client_addr= server.accept()
        print(client_addr)

        # 通信
        spawn(comun,conn)

if __name__ == '__main__':
    g1=spawn(server,'127.0.0.1',8080)
    g1.join()

from threading import Thread,current_thread  #开线程
from socket import *

def client():
    client= socket(AF_INET,SOCK_STREAM)
    client.connect(('127.0.0.1',8080))
    n=0
    while True:
        msg='%s say hello %s' %(current_thread().name,n)
        n+=1
        client.send(msg.encode('utf-8'))
        data=client.recv(1024)
        print(data.decode('utf-8'))

if __name__ == '__main__':
    for i in range(500):
        t=Thread(target=client)
        t.start()

实现了在单线程下承受500个并发量