关闭 Twisted 中的非活动连接 [英] Close inactive connections in Twisted

问题描述

我正在使用 LineReceiver 协议运行 Twisted 服务器.有时客户端会悄悄断开连接，因此 Twisted 保持连接打开.并且因为服务器不会发送任何东西，除非请求它，所以永远不会有 TCP 超时.换句话说，有些连接永远不会在服务器端关闭.

I'm running a Twisted server with the LineReceiver protocol. Sometimes clients will disconnect silently, so Twisted keeps the connection open. And because the server doesn't send anything unless requested of it, there's never a TCP timeout. In other words, some connections are never closed server-side.

如何让 Twisted 关闭几个小时不活动的连接?

How can I have Twisted close a connection that's been inactive for a few hours?

推荐答案

您可以使用 reactor.callLater 安排定时事件.基于此，有一个用于向协议添加超时的帮助程序，twisted.protocols.policies.TimeoutMixin.

You can schedule timed events using reactor.callLater. Based on this, there's a helper for adding timeouts to protocols, twisted.protocols.policies.TimeoutMixin.

另一种方法是使用 TCP 保持连接，您可以使用传输的 setTcpKeepAlive 方法启用它.

Another approach is to use TCP keep-alives, which you can enable using the transport's setTcpKeepAlive method.

另一种方法是使用应用程序级保活.基本上是偶尔发送一个noop".它不需要回应.如果连接已经丢失，发送缓冲区中的额外数据最终会导致 TCP 堆栈注意到.

And another approach is to use application-level keep-alives. Essentially send a ''noop'' once in a while. It doesn't need a response. If the connection has been lost, the extra data in the send buffer will cause the TCP stack to eventually notice.

另请参阅常见问题解答.

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