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()

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