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53968063a5
Fixes #4488 ```[tasklist] # Before merging - [x] There's one call site that won't compile on Linux. Make this cross-platform. - [x] Does the rule get removed every time when you quit gracefully? - [x] Will this NRPT rule prevent connlib from re-resolving the portal IP if it needs to? - [x] Test network switching. Does this work worse, better, or the same? - [ ] Is the Windows DNS cache flushed exactly when it needs to be? ``` - After connlib connects to the portal, we add an NRPT rule asking Windows to send **all** DNS queries to our sentinels. This should also be called whenever the interface is re-configured, which might change the sentinel IPs - When exiting gracefully, we delete the rule to restore normal DNS behavior without having to back up and restore the other IPs - We also delete the rule at startup so that if Firezone crashes or misbehaves, restarting it should restore normal DNS - We also flush the system-wide DNS cache whenever we claim different routes. This may flush too often, and it may also miss some flushes that we should do. It needs double-checking. - There is still a gap when changing networks, DNS can leak there, but I don't think it's worse than before.
Rust development guide
Firezone uses Rust for all data plane components. This directory contains the Linux and Windows clients, and low-level networking implementations related to STUN/TURN.
We target the last stable release of Rust using rust-toolchain.toml.
If you are using rustup, that is automatically handled for you.
Otherwise, ensure you have the latest stable version of Rust installed.
Reading Client logs
The Client logs are written as JSONL for machine-readability.
To make them more human-friendly, pipe them through jq like this:
cd path/to/logs # e.g. `$HOME/.cache/dev.firezone.client/data/logs` on Linux
cat *.log | jq -r '"\(.time) \(.severity) \(.message)"'
Resulting in, e.g.
2024-04-01T18:25:47.237661392Z INFO started log
2024-04-01T18:25:47.238193266Z INFO GIT_VERSION = 1.0.0-pre.11-35-gcc0d43531
2024-04-01T18:25:48.295243016Z INFO No token / actor_name on disk, starting in signed-out state
2024-04-01T18:25:48.295360641Z INFO null