AtomVM Daily: Weekly Recap - Locking Down TLS Security
This week's sole update tightens SSL security in AtomVM by adding peer certificate verification, closing a long-standing gap for devices that need trusted network connections.
Duration: PT2M26S
Episode overview
This episode is a short developer briefing from AtomVM Daily.
It explains recent repository work in plain language.
- Show: AtomVM Daily
- Published: 2026-08-31T09:07:37Z
- Audio duration: PT2M26S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Welcome to AtomVM Daily, your weekly recap for August 24th through August 31st, 2026.
One pull request activity item, zero additional commits this week — a quiet week by volume, but a meaningful one for security.
The headline story is PR 2390, from contributor Peter M M, adding peer certificate verification to AtomVM's SSL support. Up to now, secure connections lacked a way to confirm the identity of the server on the other end — a real risk for devices operating in the field.
This change lets developers turn on verify-peer mode using either caller-supplied certificate authorities or CA files. On ESP32 targets, it can also tap into the I-D-F certificate bundle that ships with the platform, so projects don't need to hunt down and embed their own trusted root certificates.
The PR also cleans up error handling around TLS setup. Failed connection attempts now consistently close their sockets rather than leaking resources, and TLS close or socket reset failures get mapped to stable, predictable SSL error codes. For anyone debugging connection issues, that consistency should make failures…
Worth noting: the description points to a real-world driver behind this work — projects like Nerves…
Nearby episodes from AtomVM Daily
- Weekly Recap - Platform Reach and Performance Groundwork
- Weekly Recap - Continuous Integration Gets a RISC-V Upgrade
- Weekly Recap - Standard Library Alignment
- Weekly Recap - Correctness Fixes and Expanding the Runtime's Reach
- Weekly Recap - Hardening the Runtime, Filling in the Standard Library
- Weekly Recap - Correctness Fixes and Platform Hardening
- Weekly Recap - Standard Library Expansion & System Reliability
- Weekly Recap - Stability and System Reliability