f5425ac8e4
As per the WireGuard paper, `boringtun` tries to handshake with the remote peer for 90s before it gives up. This timeout is important because when a session is discarded due to e.g. missing replies, WireGuard attempts to handshake a new session. Without this timeout, we would then try to handshake a session forever. Unfortunately, `boringtun` does not distinguish a missing handshake response from a bad one. Decryption errors whilst decoding a handshake response are simply passed up to the upper layer, in our case `snownet`. I am not sure how we can actually fail to decrypt a handshake but the pattern we are seeing in customer logs is that this happens over and over again, so there is no point in having `boringtun` retry the handshake. Therefore, we immediately fail the connection when this happens. Failed connections are immediately removed, triggering the client send a new connection-intent to the portal. Such a new connection intent will then sync-up the state between Client and Gateway so both of them use the most recent public key. Resolves: #9845
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
Benchmarking on Linux
The recommended way for benchmarking any of the Rust components is Linux' perf utility.
For example, to attach to a running application, do:
- Ensure the binary you are profiling is compiled with the
releaseprofile. sudo perf record -g --freq 10000 --pid $(pgrep <your-binary>).- Run the speed test or whatever load-inducing task you want to measure.
sudo perf script > profile.perf- Open profiler.firefox.com and load
profile.perf
Instead of attaching to a process with --pid, you can also specify the path to executable directly.
That is useful if you want to capture perf data for a test or a micro-benchmark.