python异步回调函数的实现

#coding:utf-8
from socket import *
import time  

#简单的服务器程序 监听用户连接，接收用户发来的信息，并返回反馈
def main():
    HOST = ""
    PORT = 3316
    BUFSIZE = 1024
    ADDR = (HOST, PORT)
    tcpSerSock = socket(AF_INET, SOCK_STREAM)
    tcpSerSock.bind(ADDR)
    tcpSerSock.listen(5)
    print "YoSQL bind port %d ,starting ...." % PORT
    while  1:
        print 'waiting for connection ...'
        tcpCliSock, addr = tcpSerSock.accept()
        print '...connected from:',addr  

        while 1:
            try:
                data = tcpCliSock.recv(BUFSIZE)
                if not data:
                    break
                print 'data = %s' % data
                i = data.find('[')
                j = data.find(']')
                if i!=-1 and j!=-1:
                    sFuncId = data[i+1:j]
                    message = data[j+1:]
                    time.sleep(2)
                    SendToListener("[%s] echo" % sFuncId)
            except Exception, e:
                print e
                break
        tcpCliSock.close()
    tcpSerSock.close()  

def SendToListener(message):
    listenerSock = socket(AF_INET, SOCK_STREAM)
    listenerSock.connect(('localhost',7800))
    listenerSock.send(message)
    listenerSock.close()
    print 'send to listener: %s' % message  

if __name__ == '__main__':
    main()  

#http://blog.csdn.net/payinglee/article/details/9005010
#coding:utf-8
import threading
import time
from socket import *  

lCallback = {}
iFuncId = 0   

#首先注册函数，当接收到来自YoSQL的信息后，再调用该函数
#callback机制：为某一事件注册回调函数，当事件发生时，调用该函数
def StartListener():
    global iFuncId
    global lCallback
    HOST = ""
    PORT = 7800
    BUFSIZE = 1024
    ADDR = (HOST, PORT)
    tcpSerSock = socket(AF_INET, SOCK_STREAM)
    tcpSerSock.bind(ADDR)
    tcpSerSock.listen(5)
    print "Listener bind port %d ,starting ...." % PORT
    while 1:
        print 'waiting for connection ...'
        tcpCliSock, addr = tcpSerSock.accept()
        print '...connected from:',addr
        while 1:
            try:
                data = tcpCliSock.recv(BUFSIZE)
                if not data:
                    break
                print 'data = %s' % data
                i = data.find('[')
                j = data.find(']')
                if i!=-1 and j!=-1:
                    iFuncId = int(data[i+1:j])
                    message = data[j+1:]
                    func = lCallback.get(iFuncId,None)
                    if func:
                        func()
                        del lCallback[iFuncId]
            except Exception,e:
                print e
                break
        tcpCliSock.close()
    tcpSerSock.close()  

def MyCallback():
    print 'callback called !!!!!!!!!!'  

def Send(callback,message):
    global iFuncId
    global lCallback
    lCallback[iFuncId] = callback
    listenerSock = socket(AF_INET, SOCK_STREAM)
    listenerSock.connect(('localhost',3316))
    listenerSock.send("[%d] %s" % (iFuncId,message))
    listenerSock.close()
    iFuncId += 1
    print 'send message to YoSQL : %s'%message  

def DoSomeThing():
    print '......DoSomeThing......'
if __name__ == '__main__':
    t = threading.Thread(target=StartListener)
    t.setDaemon(True)
    t.start()
    # t.join()
    DoSomeThing()
    DoSomeThing()
    Send(MyCallback,"hahaha")
    i = 0
    while i < 20:
        i+= 1
        DoSomeThing()
        try:
            time.sleep(0.5)
        except Exception,e:
            print e
            break
    # t.join(2)
    print '>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>'