python TCPServer 地址已在使用中，但我关闭服务器并使用 `allow_reuse_address`

Question

这是我运行服务器的代码:

class MyRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
    #....

PORT = 8089

httpd = SocketServer.TCPServer(("", PORT), MyRequestHandler)
httpd.allow_reuse_address = True

print "Serving forever at port", PORT
try:
    httpd.serve_forever()
except:
    print "Closing the server."
    httpd.server_close()
    raise

然而这就是发生的事情:

^CClosing the server.
Traceback (most recent call last):
  File "server.py", line 118, in <module>
    self.send_error(400, "Unimplemented GET command: %s" % (self.path,))
  File "/home/claudiu/local/lib/python2.6/SocketServer.py", line 224, in serve_forever
    r, w, e = select.select([self], [], [], poll_interval)
KeyboardInterrupt
(.virtualenv)claudiu@xxx:~/xxx$ python server.py
Traceback (most recent call last):
  File "server.py", line 122, in <module>
    httpd = SocketServer.TCPServer(("", PORT), MyRequestHandler)
  File "/home/claudiu/local/lib/python2.6/SocketServer.py", line 402, in __init__
    self.server_bind()
  File "/home/claudiu/local/lib/python2.6/SocketServer.py", line 413, in server_bind
    self.socket.bind(self.server_address)
  File "<string>", line 1, in bind
socket.error: [Errno 98] Address already in use

为什么？我关闭服务器并将 allow_reuse_address 设置为 True...使用 python 2.6.8。

Answer 1

感谢其他答案，我想通了。 allow_reuse_address 应该在类上，而不是在实例上:

SocketServer.TCPServer.allow_reuse_address = True
httpd = SocketServer.TCPServer(("", PORT), MyRequestHandler)

不过，我仍然不确定为什么关闭套接字没有为服务器的下一次运行释放它。