python基于select实现的socket服务器

本文实例讲述了python基于select实现的socket服务器。分享给大家供大家参考,具体如下:

借鉴了asyncore模块中select.select的使用方法

import socket
import traceback
import select
eol1 = b’\n\n’
eol2 = b’\n\r\n’
socketmap = {}
r,w,e = [],[],[]
response = b’http/1.0 200 ok\r\ndate: mon, 1 jan 1996 01:01:01 gmt\r\n’
response += b’content-type: text/plain\r\ncontent-length: 13\r\n\r\n’
response += b’hello, world!’
serversocket = socket.socket(socket.af_inet, socket.sock_stream)
serversocket.setsockopt(socket.sol_socket, socket.so_reuseaddr, 1)
serversocket.bind((‘0.0.0.0’, 23456))
serversocket.listen(1)
#serversocket.setblocking(0)
listening_fileno = serversocket.fileno()
socketmap[listening_fileno] = serversocket
print ‘listening_fileno’,listening_fileno
try:
while true:
r,w,e = [],[],[]
for fd in socketmap:
r.append(fd)
w.append(fd)
e.append(fd)
r,w,e = select.select(r,w,e,1)
for fd in r:
request = b”
isocket = socketmap[fd]
if fd == listening_fileno:
print ‘accepting’
clientsock,clientaddr = isocket.accept()
#clientsock.setblocking(0)
cli_fileno = clientsock.fileno()
r.append(cli_fileno)
w.append(cli_fileno)
e.append(cli_fileno)
socketmap[cli_fileno] = clientsock
else:
print ‘reading’
while eol1 not in request and eol2 not in request:
request += isocket.recv(1024)
print(request.decode())
for fd in w:
print ‘writing’
osocket = socketmap[fd]
osocket.send(response)
for fd in e:
esocket = socketmap[fd]
print ‘socket close’,fd
esocket.close()
del socketmap[fd]
print “no data coming”
except exception,e:
print traceback.print_exc()
serversocket.close()

更多关于python相关内容感兴趣的读者可查看本站专题:《python字符串操作技巧汇总》、《python入门与进阶经典教程》及《python文件与目录操作技巧汇总》

希望本文所述对大家python程序设计有所帮助。

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