zengkui commented on issue #1775:
URL:
https://github.com/apache/incubator-brpc/issues/1775#issuecomment-1146814881
> > 这个理论错误只会出现多个完整的json string在一个response里，不会出现残缺部分数据的情况吧？
>
>
不是，这里的数据就读自对应http链接的socket中，任何一种情况都可能出现，这是没有保证的，特别是出现中断(signal)和网络抖动时。只是在很多时候，数据已经在那了，且正好是一份。但如果是一个7*24运行的线上系统，出问题的概率应该就比较高了。
谢谢，etcd的这个监听时间的功能基本没啥问题了。但是实际上watch的服务定义如下，不知道这个cancel
操作怎么才能通过BRPC发送到server端？ 我的理解这是一个类似stream rpc的功能，用brpc的http
client似乎做不到，只能在需要cancel的时候通过另外一个连接来发送？ 类似的keep alive的操作似乎也只能采用一个专用线程来间隔发送心跳信息了。
```protobuf
// Watch watches for events happening or that have happened. Both input
and output
// are streams; the input stream is for creating and canceling watchers
and the output
// stream sends events. One watch RPC can watch on multiple key ranges,
streaming events
// for several watches at once. The entire event history can be watched
starting from the
// last compaction revision.
rpc Watch(stream WatchRequest) returns (stream WatchResponse) {
option (google.api.http) = {
post: "/v3/watch"
body: "*"
};
}
}
```
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