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skywind3000 avatar skywind3000 commented on June 8, 2024

什么叫做 “主动丢包” ？KCP 自己不会丢包，哪里来的主动？

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firstimes avatar firstimes commented on June 8, 2024

就是之前讨论过的，在一些对实时性要求比较高的应用场景。如果发送的数据超过一定时间再发送过去已经没有意义了，所以就需要从待发送队列里面丢弃。比如在线实时通话，如果我发送一个通话请求信令给你，因为网络原因这个信令当时没有发出去，一个小时之后 kcp 重发成功了，但是你再收到这个信令已经没有意义了。

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firstimes avatar firstimes commented on June 8, 2024

再比如在线实时聊天，用户发一条消息给你，因为网络原因当时没有发送成功，APP 会告诉用户这条消息发送失败了，但是 kcp 却在努力重试，最后发送成功了。这就与 APP 的业务逻辑相违背了。既然已经告诉用户消息发送失败了，就不应该再发送成功。所以希望 kcp 能把这条消息丢弃掉，不要重发。

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firstimes avatar firstimes commented on June 8, 2024

#336
我看其他的朋友也有这样的需求

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