#!/usr/bin/env python
# -*- coding:utf-8 -*-
# socket server
import socketip_port = ('127.0.0.1',9999)sk = socket.socket()
sk.bind(ip_port)
sk.listen(5)while True:print 'server waiting...'conn,addr = sk.accept()client_data = conn.recv(1024)print client_dataconn.sendall('不要回答,不要回答,不要回答')conn.close()socket server

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# server client
import socket
ip_port = ('127.0.0.1',9999)sk = socket.socket()
sk.connect(ip_port)sk.sendall('请求占领地球')server_reply = sk.recv(1024)
print server_replysk.close()socket client

# 服务端
import socket
ip_port = ('127.0.0.1',9999)
sk = socket.socket(socket.AF_INET,socket.SOCK_DGRAM,0)
sk.bind(ip_port)while True:data,(host,port) = sk.recvfrom(1024)print(data,host,port)sk.sendto(bytes('ok', encoding='utf-8'), (host,port))#客户端
import socket
ip_port = ('127.0.0.1',9999)sk = socket.socket(socket.AF_INET,socket.SOCK_DGRAM,0)
while True:inp = input('数据：').strip()if inp == 'exit':breaksk.sendto(bytes(inp, encoding='utf-8'),ip_port)data = sk.recvfrom(1024)print(data)sk.close()UDP

#!/usr/bin/env python
# -*- coding:utf-8 -*-import socketip_port = ('127.0.0.1',8888)
sk = socket.socket()
sk.bind(ip_port)
sk.listen(5)while True:conn,address =  sk.accept()conn.sendall('欢迎致电 10086，请输入1xxx,0转人工服务.')Flag = Truewhile Flag:data = conn.recv(1024)if data == 'exit':Flag = Falseelif data == '0':conn.sendall('通过可能会被录音.balabala一大推')else:conn.sendall('请重新输入.')conn.close()服务端

#!/usr/bin/env python
# -*- coding:utf-8 -*-import socketip_port = ('127.0.0.1',8005)
sk = socket.socket()
sk.connect(ip_port)
sk.settimeout(5)while True:data = sk.recv(1024)print 'receive:',datainp = raw_input('please input:')sk.sendall(inp)if inp == 'exit':breaksk.close()客户端

#!/usr/bin/env python
# -*- coding:utf-8 -*-import select
import threading
import syswhile True:readable, writeable, error = select.select([sys.stdin,],[],[],1)if sys.stdin in readable:print 'select get stdin',sys.stdin.readline()利用select监听终端操作实例

#!/usr/bin/env python
# -*- coding:utf-8 -*-import socket
import selectsk1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sk1.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sk1.bind(('127.0.0.1',8002))
sk1.listen(5)
sk1.setblocking(0)inputs = [sk1,]while True:readable_list, writeable_list, error_list = select.select(inputs, [], inputs, 1)for r in readable_list:# 当客户端第一次连接服务端时if sk1 == r:print 'accept'request, address = r.accept()request.setblocking(0)inputs.append(request)# 当客户端连接上服务端之后，再次发送数据时else:received = r.recv(1024)# 当正常接收客户端发送的数据时if received:print 'received data:', received# 当客户端关闭程序时else:inputs.remove(r)sk1.close()利用select实现伪同时处理多个Socket客户端请求：服务端

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import socketip_port = ('127.0.0.1',8002)
sk = socket.socket()
sk.connect(ip_port)while True:inp = raw_input('please input:')sk.sendall(inp)
sk.close()利用select实现伪同时处理多个Socket客户端请求：客户端

#!/usr/bin/env python
#coding:utf8'''服务器的实现 采用select的方式
'''import select
import socket
import sys
import Queue#创建套接字并设置该套接字为非阻塞模式server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server.setblocking(0)#绑定套接字
server_address = ('localhost',10000)
print >>sys.stderr,'starting up on %s port %s'% server_address
server.bind(server_address)#将该socket变成服务模式
#backlog等于5，表示内核已经接到了连接请求，但服务器还没有调用accept进行处理的连接个数最大为5
#这个值不能无限大，因为要在内核中维护连接队列server.listen(5)#初始化读取数据的监听列表,最开始时希望从server这个套接字上读取数据
inputs = [server]#初始化写入数据的监听列表，最开始并没有客户端连接进来，所以列表为空outputs = []#要发往客户端的数据
message_queues = {}
while inputs:print >>sys.stderr,'waiting for the next event'#调用select监听所有监听列表中的套接字，并将准备好的套接字加入到对应的列表中readable,writable,exceptional = select.select(inputs,outputs,inputs)#列表中的socket 套接字  如果是文件呢？ #监控文件句柄有某一处发生了变化 可写 可读  异常属于Linux中的网络编程 #属于同步I/O操作，属于I/O复用模型的一种#rlist--等待到准备好读#wlist--等待到准备好写#xlist--等待到一种异常#处理可读取的套接字'''如果server这个套接字可读，则说明有新链接到来此时在server套接字上调用accept,生成一个与客户端通讯的套接字并将与客户端通讯的套接字加入inputs列表，下一次可以通过select检查连接是否可读然后在发往客户端的缓冲中加入一项，键名为:与客户端通讯的套接字，键值为空队列select系统调用是用来让我们的程序监视多个文件句柄(file descrīptor)的状态变化的。程序会停在select这里等待，直到被监视的文件句柄有某一个或多个发生了状态改变''''''若可读的套接字不是server套接字,有两种情况:一种是有数据到来，另一种是链接断开如果有数据到来,先接收数据,然后将收到的数据填入往客户端的缓存区中的对应位置，最后将于客户端通讯的套接字加入到写数据的监听列表:如果套接字可读.但没有接收到数据，则说明客户端已经断开。这时需要关闭与客户端连接的套接字进行资源清理'''for s in readable: if s is server:connection,client_address = s.accept()print >>sys.stderr,'connection from',client_addressconnection.setblocking(0)#设置非阻塞inputs.append(connection)message_queues[connection] = Queue.Queue()else:data = s.recv(1024)if data:print >>sys.stderr,'received "%s" from %s'% \(data,s.getpeername())message_queues[s].put(data)if s not in outputs:outputs.append(s)else:print >>sys.stderr,'closing',client_addressif s in outputs:outputs.remove(s)inputs.remove(s)s.close()del message_queues[s]#处理可写的套接字'''在发送缓冲区中取出响应的数据，发往客户端。如果没有数据需要写，则将套接字从发送队列中移除，select中不再监视'''for s in writable:try:next_msg = message_queues[s].get_nowait()except Queue.Empty:print >>sys.stderr,'  ',s,getpeername(),'queue empty'outputs.remove(s)else:print >>sys.stderr,'sending "%s" to %s'% \(next_msg,s.getpeername())s.send(next_msg)#处理异常情况for s in exceptional:for s in exceptional:print >>sys.stderr,'exception condition on',s.getpeername()inputs.remove(s)if s in outputs:outputs.remove(s)s.close()del message_queues[s]基于select实现socket服务端

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import SocketServer

class MyServer(SocketServer.BaseRequestHandler):

def handle(self):
# print self.request,self.client_address,self.server
conn = self.request
conn.sendall('欢迎致电 10086，请输入1xxx,0转人工服务.')
Flag = True
while Flag:
data = conn.recv(1024)
if data == 'exit':
Flag = False
elif data == '0':
conn.sendall('通过可能会被录音.balabala一大推')
else:
conn.sendall('请重新输入.')

if __name__ == '__main__':
server = SocketServer.ThreadingTCPServer(('127.0.0.1',8009),MyServer)
server.serve_forever()

SocketServer实现服务器

#!/usr/bin/env python
# -*- coding:utf-8 -*-import socketip_port = ('127.0.0.1',8009)
sk = socket.socket()
sk.connect(ip_port)
sk.settimeout(5)while True:data = sk.recv(1024)print 'receive:',datainp = raw_input('please input:')sk.sendall(inp)if inp == 'exit':breaksk.close()客户端

class BaseServer:"""Base class for server classes.Methods for the caller:- __init__(server_address, RequestHandlerClass)- serve_forever(poll_interval=0.5)- shutdown()- handle_request()  # if you do not use serve_forever()- fileno() -> int   # for select()Methods that may be overridden:- server_bind()- server_activate()- get_request() -> request, client_address- handle_timeout()- verify_request(request, client_address)- server_close()- process_request(request, client_address)- shutdown_request(request)- close_request(request)- handle_error()Methods for derived classes:- finish_request(request, client_address)Class variables that may be overridden by derived classes orinstances:- timeout- address_family- socket_type- allow_reuse_addressInstance variables:- RequestHandlerClass- socket"""timeout = Nonedef __init__(self, server_address, RequestHandlerClass):"""Constructor.  May be extended, do not override."""self.server_address = server_addressself.RequestHandlerClass = RequestHandlerClassself.__is_shut_down = threading.Event()self.__shutdown_request = Falsedef server_activate(self):"""Called by constructor to activate the server.May be overridden."""passdef serve_forever(self, poll_interval=0.5):"""Handle one request at a time until shutdown.Polls for shutdown every poll_interval seconds. Ignoresself.timeout. If you need to do periodic tasks, do them inanother thread."""self.__is_shut_down.clear()try:while not self.__shutdown_request:# XXX: Consider using another file descriptor or# connecting to the socket to wake this up instead of# polling. Polling reduces our responsiveness to a# shutdown request and wastes cpu at all other times.r, w, e = _eintr_retry(select.select, [self], [], [],poll_interval)if self in r:self._handle_request_noblock()finally:self.__shutdown_request = Falseself.__is_shut_down.set()def shutdown(self):"""Stops the serve_forever loop.Blocks until the loop has finished. This must be called whileserve_forever() is running in another thread, or it willdeadlock."""self.__shutdown_request = Trueself.__is_shut_down.wait()# The distinction between handling, getting, processing and# finishing a request is fairly arbitrary.  Remember:## - handle_request() is the top-level call.  It calls#   select, get_request(), verify_request() and process_request()# - get_request() is different for stream or datagram sockets# - process_request() is the place that may fork a new process#   or create a new thread to finish the request# - finish_request() instantiates the request handler class;#   this constructor will handle the request all by itselfdef handle_request(self):"""Handle one request, possibly blocking.Respects self.timeout."""# Support people who used socket.settimeout() to escape# handle_request before self.timeout was available.timeout = self.socket.gettimeout()if timeout is None:timeout = self.timeoutelif self.timeout is not None:timeout = min(timeout, self.timeout)fd_sets = _eintr_retry(select.select, [self], [], [], timeout)if not fd_sets[0]:self.handle_timeout()returnself._handle_request_noblock()def _handle_request_noblock(self):"""Handle one request, without blocking.I assume that select.select has returned that the socket isreadable before this function was called, so there should beno risk of blocking in get_request()."""try:request, client_address = self.get_request()except socket.error:returnif self.verify_request(request, client_address):try:self.process_request(request, client_address)except:self.handle_error(request, client_address)self.shutdown_request(request)def handle_timeout(self):"""Called if no new request arrives within self.timeout.Overridden by ForkingMixIn."""passdef verify_request(self, request, client_address):"""Verify the request.  May be overridden.Return True if we should proceed with this request."""return Truedef process_request(self, request, client_address):"""Call finish_request.Overridden by ForkingMixIn and ThreadingMixIn."""self.finish_request(request, client_address)self.shutdown_request(request)def server_close(self):"""Called to clean-up the server.May be overridden."""passdef finish_request(self, request, client_address):"""Finish one request by instantiating RequestHandlerClass."""self.RequestHandlerClass(request, client_address, self)def shutdown_request(self, request):"""Called to shutdown and close an individual request."""self.close_request(request)def close_request(self, request):"""Called to clean up an individual request."""passdef handle_error(self, request, client_address):"""Handle an error gracefully.  May be overridden.The default is to print a traceback and continue."""print '-'*40print 'Exception happened during processing of request from',print client_addressimport tracebacktraceback.print_exc() # XXX But this goes to stderr!print '-'*40BaseServer

class TCPServer(BaseServer):"""Base class for various socket-based server classes.Defaults to synchronous IP stream (i.e., TCP).Methods for the caller:- __init__(server_address, RequestHandlerClass, bind_and_activate=True)- serve_forever(poll_interval=0.5)- shutdown()- handle_request()  # if you don't use serve_forever()- fileno() -> int   # for select()Methods that may be overridden:- server_bind()- server_activate()- get_request() -> request, client_address- handle_timeout()- verify_request(request, client_address)- process_request(request, client_address)- shutdown_request(request)- close_request(request)- handle_error()Methods for derived classes:- finish_request(request, client_address)Class variables that may be overridden by derived classes orinstances:- timeout- address_family- socket_type- request_queue_size (only for stream sockets)- allow_reuse_addressInstance variables:- server_address- RequestHandlerClass- socket"""address_family = socket.AF_INETsocket_type = socket.SOCK_STREAMrequest_queue_size = 5allow_reuse_address = Falsedef __init__(self, server_address, RequestHandlerClass, bind_and_activate=True):"""Constructor.  May be extended, do not override."""BaseServer.__init__(self, server_address, RequestHandlerClass)self.socket = socket.socket(self.address_family,self.socket_type)if bind_and_activate:try:self.server_bind()self.server_activate()except:self.server_close()raisedef server_bind(self):"""Called by constructor to bind the socket.May be overridden."""if self.allow_reuse_address:self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)self.socket.bind(self.server_address)self.server_address = self.socket.getsockname()def server_activate(self):"""Called by constructor to activate the server.May be overridden."""self.socket.listen(self.request_queue_size)def server_close(self):"""Called to clean-up the server.May be overridden."""self.socket.close()def fileno(self):"""Return socket file number.Interface required by select()."""return self.socket.fileno()def get_request(self):"""Get the request and client address from the socket.May be overridden."""return self.socket.accept()def shutdown_request(self, request):"""Called to shutdown and close an individual request."""try:#explicitly shutdown.  socket.close() merely releases#the socket and waits for GC to perform the actual close.request.shutdown(socket.SHUT_WR)except socket.error:pass #some platforms may raise ENOTCONN hereself.close_request(request)def close_request(self, request):"""Called to clean up an individual request."""request.close()TCPServer

class ThreadingMixIn:"""Mix-in class to handle each request in a new thread."""# Decides how threads will act upon termination of the# main processdaemon_threads = Falsedef process_request_thread(self, request, client_address):"""Same as in BaseServer but as a thread.In addition, exception handling is done here."""try:self.finish_request(request, client_address)self.shutdown_request(request)except:self.handle_error(request, client_address)self.shutdown_request(request)def process_request(self, request, client_address):"""Start a new thread to process the request."""t = threading.Thread(target = self.process_request_thread,args = (request, client_address))t.daemon = self.daemon_threadst.start()ThreadingMixIn

class ThreadingTCPServer(ThreadingMixIn, TCPServer): pass

class BaseRequestHandler:"""Base class for request handler classes.This class is instantiated for each request to be handled.  Theconstructor sets the instance variables request, client_addressand server, and then calls the handle() method.  To implement aspecific service, all you need to do is to derive a class whichdefines a handle() method.The handle() method can find the request as self.request, theclient address as self.client_address, and the server (in case itneeds access to per-server information) as self.server.  Since aseparate instance is created for each request, the handle() methodcan define arbitrary other instance variariables."""def __init__(self, request, client_address, server):self.request = requestself.client_address = client_addressself.server = serverself.setup()try:self.handle()finally:self.finish()def setup(self):passdef handle(self):passdef finish(self):passSocketServer.BaseRequestHandler

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import SocketServerclass MyServer(SocketServer.BaseRequestHandler):def handle(self):# print self.request,self.client_address,self.serverconn = self.requestconn.sendall('欢迎致电 10086，请输入1xxx,0转人工服务.')Flag = Truewhile Flag:data = conn.recv(1024)if data == 'exit':Flag = Falseelif data == '0':conn.sendall('通过可能会被录音.balabala一大推')else:conn.sendall('请重新输入.')if __name__ == '__main__':server = SocketServer.ThreadingTCPServer(('127.0.0.1',8009),MyServer)server.serve_forever()服务端

#!/usr/bin/env python
# -*- coding:utf-8 -*-import socketip_port = ('127.0.0.1',8009)
sk = socket.socket()
sk.connect(ip_port)
sk.settimeout(5)while True:data = sk.recv(1024)print 'receive:',datainp = raw_input('please input:')sk.sendall(inp)if inp == 'exit':breaksk.close()客户端

import socket
import threading
import selectdef process(request, client_address):print request,client_addressconn = requestconn.sendall('欢迎致电 10086，请输入1xxx,0转人工服务.')flag = Truewhile flag:data = conn.recv(1024)if data == 'exit':flag = Falseelif data == '0':conn.sendall('通过可能会被录音.balabala一大推')else:conn.sendall('请重新输入.')sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sk.bind(('127.0.0.1',8002))
sk.listen(5)while True:r, w, e = select.select([sk,],[],[],1)print 'looping'if sk in r:print 'get request'request, client_address = sk.accept()t = threading.Thread(target=process, args=(request, client_address))t.daemon = Falset.start()sk.close()

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import SocketServerclass MyServer(SocketServer.BaseRequestHandler):def handle(self):# print self.request,self.client_address,self.serverconn = self.requestconn.sendall('欢迎致电 10086，请输入1xxx,0转人工服务.')Flag = Truewhile Flag:data = conn.recv(1024)if data == 'exit':Flag = Falseelif data == '0':conn.sendall('通过可能会被录音.balabala一大推')else:conn.sendall('请重新输入.')if __name__ == '__main__':server = SocketServer.ForkingTCPServer(('127.0.0.1',8009),MyServer)server.serve_forever()服务端

#!/usr/bin/env python
# -*- coding:utf-8 -*-import socketip_port = ('127.0.0.1',8009)
sk = socket.socket()
sk.connect(ip_port)
sk.settimeout(5)while True:data = sk.recv(1024)print 'receive:',datainp = raw_input('please input:')sk.sendall(inp)if inp == 'exit':breaksk.close()客户端　

#!/usr/bin/env python
# -*- coding:utf-8 -*-# event_drive.pyevent_list = []def run():for event in event_list:obj = event()obj.execute()class BaseHandler(object):"""用户必须继承该类，从而规范所有类的方法（类似于接口的功能）"""def execute(self):raise Exception('you must overwrite execute')最牛逼的事件驱动框架

#!/usr/bin/env python
# -*- coding:utf-8 -*-from source import event_driveclass MyHandler(event_drive.BaseHandler):def execute(self):print 'event-drive execute MyHandler'event_drive.event_list.append(MyHandler)
event_drive.run()

#!/usr/bin/env python
# -*- coding:utf-8 -*-from twisted.internet import reactor, protocol
from twisted.web.client import getPage
from twisted.internet import reactor
import timeclass Echo(protocol.Protocol):def dataReceived(self, data):deferred1 = getPage('http://cnblogs.com')deferred1.addCallback(self.printContents)deferred2 = getPage('http://baidu.com')deferred2.addCallback(self.printContents)for i in range(2):time.sleep(1)print 'execute ',idef execute(self,data):self.transport.write(data)def printContents(self,content):print len(content),content[0:100],time.time()def main():factory = protocol.ServerFactory()factory.protocol = Echoreactor.listenTCP(8000,factory)reactor.run()if __name__ == '__main__':main()异步IO操作