SocketServer.ThreadingTCPServer - 程序重新启动后无法绑定到地址

发布于 2024-08-21 22:43:31 字数 454 浏览 5 评论 0原文

作为 cannot-bind-to-address-after- 的后续操作socket-program-crashes，我的程序重新启动后收到此错误：

socket.error: [Errno 98] 地址已在使用中

在这种特殊情况下，程序不是直接使用套接字，而是启动自己的线程 TCP 服务器：

httpd = SocketServer.ThreadingTCPServer(('localhost', port), CustomHandler)
httpd.serve_forever()

如何修复此错误消息？

原文

As a follow-up to cannot-bind-to-address-after-socket-program-crashes, I was receiving this error after my program was restarted:

socket.error: [Errno 98] Address already in use

In this particular case, instead of using a socket directly, the program is starting its own threaded TCP server:

httpd = SocketServer.ThreadingTCPServer(('localhost', port), CustomHandler)
httpd.serve_forever()

How can I fix this error message?

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倒数 2024-08-28 22:43:31

上述解决方案对我不起作用，但这个解决方案却有效：

   SocketServer.ThreadingTCPServer.allow_reuse_address = True
   server = SocketServer.ThreadingTCPServer(("localhost", port), CustomHandler)
   server.serve_forever()

The above solution didn't work for me but this one did:

   SocketServer.ThreadingTCPServer.allow_reuse_address = True
   server = SocketServer.ThreadingTCPServer(("localhost", port), CustomHandler)
   server.serve_forever()

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月野兔 2024-08-28 22:43:31

在这种特殊情况下，当设置 allow_reuse_address 选项时，可以从 TCPServer 类调用 .setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)。所以我能够按如下方式解决它：

httpd = SocketServer.ThreadingTCPServer(('localhost', port), CustomHandler, False) # Do not automatically bind
httpd.allow_reuse_address = True # Prevent 'cannot bind to address' errors on restart
httpd.server_bind()     # Manually bind, to support allow_reuse_address
httpd.server_activate() # (see above comment)
httpd.serve_forever()

无论如何，我认为这可能有用。 Python 3.0 中的解决方案略有不同

In this particular case, .setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) may be called from the TCPServer class when the allow_reuse_address option is set. So I was able to solve it as follows:

httpd = SocketServer.ThreadingTCPServer(('localhost', port), CustomHandler, False) # Do not automatically bind
httpd.allow_reuse_address = True # Prevent 'cannot bind to address' errors on restart
httpd.server_bind()     # Manually bind, to support allow_reuse_address
httpd.server_activate() # (see above comment)
httpd.serve_forever()

Anyway, thought this might be useful. The solution will differ slightly in Python 3.0

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