Only first indication received when running on Linux · noble/bleno#242

(1 评论) (1 反应) (0 负责人)JavaScript (2,083 star) (465 fork)batch import

help wanted

描述

I have a Characteristic with an indicate property. When a central subscribes to it and I start sending data using the updateValueCallback property, I only get one indication back. Subsequent indications are not received. This only happens on Linux, Raspbian in my case, not on macOS (10.11.6).

Example Project: https://github.com/mattsson/bleno-onindicate-bug.git

There's also a small Xcode Project in there which will build an iOS app that connects to the peripheral and logs out received data.

Debug logs: https://gist.github.com/mattsson/e15f62789661bf7b6e1941be1308d4ba hcidump: https://gist.github.com/mattsson/2da888db72b502fdc36f2b2897777d13

贡献者指南

技术栈: javascriptnodejs
领域: backend
议题类型: bug
难度: 4
预计时间: half day
活动状态: stale
清晰度: mostly clear
前置要求: Basic understanding of BLENode.jsLinux debugging tools (hcidump)
新手友好度: 25
研究方向: Investigate the difference in BLE indication handling between Linux and macOS. The hcidump logs and debug output provided in the issue show that only the first indication is sent. Look into bleno's implementation of the updateValueCallback and how it interacts with BlueZ on Linux. Check if there is a missing completion event or a need to wait for confirmation before sending the next indication. Also review the example project for reproduction steps.