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
importsocket
importtraceback
importselect
EOL1=b'\n\n'
EOL2=b'\n\r\n'
socketmap={}
r,w,e=[],[],[]
response=b'HTTP/1.0200OK\r\nDate:Mon,1Jan199601:01:01GMT\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:
whileTrue:
r,w,e=[],[],[]
forfdinsocketmap:
r.append(fd)
w.append(fd)
e.append(fd)
r,w,e=select.select(r,w,e,1)
forfdinr:
request=b''
isocket=socketmap[fd]
iffd==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'
whileEOL1notinrequestandEOL2notinrequest:
request+=isocket.recv(1024)
print(request.decode())
forfdinw:
print'writing'
osocket=socketmap[fd]
osocket.send(response)
forfdine:
esocket=socketmap[fd]
print'socketclose',fd
esocket.close()
delsocketmap[fd]
print"nodatacoming"
exceptException,e:
printtraceback.print_exc()
serversocket.close()
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