noble/bleno

connection stuck after disconnection

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#302 opened on May 3, 2017

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help wanted

Description

I use echo example to set our BLE module as peripheral and use "nRF Connect" App of Nexus 7 2013 and iPhone 6 to connect the BLE module.

I can rapid connect it successfully firstly, but the 2nd connection will be stuck when I try connect it again after I disconnect the first connection.

There are no any log, just connection stuck unless I use ctrl+c to interrupt and then reset the "echo example".

Contributor guide

Tech stack
javascriptnodejs
Domain
backend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Node.jsBLE basicsbleno API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate the disconnection handling in the bleno echo example. Compare the first successful connection with the stuck second connection. Check if there are any leftover state or event listeners after disconnecting. Add logging to trace the flow. Look at bleno's source code, especially the onDisconnect callback and any internal state management. Possibly a race condition or missing cleanup in the BLE stack.