UDP fd什么时候调用close？ - Githubissues

panjf2000 / gnet

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UDP fd什么时候调用close？ #484

Closed iqinlongfei closed 1 year ago

iqinlongfei commented 1 year ago

Actions I've taken before I'm here

[X] I've thoroughly read the documentations about this problem but still have no answer.
[X] I've searched the Github Issues/Discussions but didn't find any similar problems that have been solved.
[X] I've searched the internet for this problem but didn't find anything helpful.

Questions with details

发现TCP连接在创建和关闭时会调用OnOpen/OnClose，但对于UDP，OnOpen/OnClose没有被调用。我想知道UDP连接什么是否会被释放。我的应用场景是使用gnet实现一个UDP server，请求都是ping-pong模式，因此在大并发情况下，担心fd不够用。

Code snippets (optional)

No response

panjf2000 commented 1 year ago

UDP 是不可靠协议，通信前不需要建立连接。