Unnecessary EVENT message / performance issue

hap-java / HAP-Java

Java implementation of the HomeKit Accessory Protocol

MIT License

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Unnecessary EVENT message / performance issue #83

Closed yfre closed 4 years ago

yfre commented 5 years ago

According to HAP spec. the controller should confirm subscription to an event with a 204 No Content HTTP status code and an empty body.

An EVENT message should be only send on value changes.

Currently we send EVENT message on subscription, i.e. current sequence: Receive: /characteristics Send: 204 No Content Send: EVENT

the last one is not required and leads to performance issues

ccutrer commented 5 years ago

Do you think this is related or exacerbated in iOS 13? My OpenHAB/HomeKit has gone to craps in iOS 13, causing constant reconnection issues.

yfre commented 5 years ago

exactly. in ios12 it was an unnecessary message but it was working. but with ios13 it become unusable, home app was keeping refreshing and reconnecting all the time.