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如何避免缓存积累延迟的问题 #175

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l42111996 opened this issue Sep 11, 2018 · 2 comments
Closed

如何避免缓存积累延迟的问题 #175

l42111996 opened this issue Sep 11, 2018 · 2 comments

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@l42111996
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因此，千万不要以为 ikcp_send 可以无节制的调用，为什么 KCP在发送窗口满的时候不返回错误呢？这个问题当年设计时权衡过，如果返回希望发送时返回错误的 EAGAIN/EWOULDBLOCK 你势必外层还需要建立一个缓存，等到下次再测试是否可以 send。那么还不如 kcp直接把这一层缓存做了，让上层更简单些，而且具体要如何处理 EAGAIN，可以让上层通过检测 ikcp_waitsnd 函数来判断还有多少包没有发出去，灵活抉择是否向 snd_queue 缓存追加数据包还是其他。

这里我看挺多版本在上层是增加一个缓冲队列，然后检测ikcp_waitsnd如果满了就下个消息再判断满不满再发送出去。这里最好的方式应该是什么样子呢？ 是否可以直接写入 然后判断ikcp_waitsnd长度超过一定的值了直接断开连接？
@l42111996
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或者判断上层增加的缓冲队列长度大于一定值了断开连接?哪种方式更好一点？

@caoli5288
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kcp只是一层ARQ

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@caoli5288 @l42111996