Reaching an internal service meant installing the agent, which needs root
for a TUN device. nblink runs the embedded client in netstack mode and
forwards local HTTP listeners to upstreams inside the tunnel, so it works on
managed machines and in rootless containers. Upstream names resolve
in-process.
Forwards bind loopback unless --allow-public-bind is given. The listener
refuses rebound and cross-site browser requests and bounds stalled request
bodies. It ships as release archives and a distroless image that runs under
an arbitrary UID.
An embedded client given no StatePath now keeps its state in memory rather
than falling back to the installed agent's state file, which every embedded
client in a proxy process also shared. The state manager gets an explicit
in-memory store for it.
## Describe your changes
When loadStateFile fails to unmarshal the state file, log whether the
file is empty (0 bytes) or has malformed content, including the byte
size.
## Issue ticket number and link
## Stack
<!-- branch-stack -->
### Checklist
- [ ] Is it a bug fix
- [ ] Is a typo/documentation fix
- [x] Is a feature enhancement
- [ ] It is a refactor
- [ ] Created tests that fail without the change (if possible)
- [ ] This change does **not** modify the public API, gRPC protocols,
functionality behavior, CLI / service flags, or introduce a new feature
— **OR** I have discussed it with the NetBird team beforehand (link the
issue / Slack thread in the description). See
[CONTRIBUTING.md](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTING.md#discuss-changes-with-the-netbird-team-first).
> By submitting this pull request, you confirm that you have read and
agree to the terms of the [Contributor License
Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md).
## Documentation
Select exactly one:
- [ ] I added/updated documentation for this change
- [x] Documentation is **not needed** for this change (explain why)
### Docs PR URL (required if "docs added" is checked)
aste the PR link from https://github.com/netbirdio/docs here:
https://github.com/netbirdio/docs/pull/__
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved state-file loading warnings by distinguishing empty files
from files containing malformed content.
* Preserved existing recovery behavior for corrupted state files.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Maycon Santos