python TCPServer地址已在使用中，但我关闭了服务器，并使用了"allow_reuse_address" [英] python TCPServer address already in use but I close the server and I use `allow_reuse_address`

问题描述

这是我运行服务器的代码:

Here is my code to run the server:

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

这是发生了什么

^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.

Why? I close the server and set allow_reuse_address to True... Using python 2.6.8.

推荐答案

感谢其他答案，我发现了. allow_reuse_address应该在类上，而不在实例上:

Thanks to the other answers, I figured it out. allow_reuse_address should be on the class, not on the instance:

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

我仍然不确定为什么关闭套接字并不能将其释放给服务器的下一次运行.

I'm still not sure why closing the socket didn't free it up for the next run of the server, though.

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