Files
tsunagi/crates/tsunagi-awg/tests/pairs.rs
T
Aleksandr Bogomiakov d941cdac7a Change network protocol selections at runtime
Protocol selection previously belonged to tsng up and therefore to the
service command line. A blocked or degraded carrier could only be removed
by editing the service and restarting the whole agent. Make the ordered
selection a local per-network setting instead.

Add Agent::set_protocols and a local control request shared by CLI and tray.
Keep tsng protocols without arguments as the protocol catalog; naming a
network shows its selection and supplying a comma-separated list replaces
it. Accept exact names, full ids and unique prefixes using shared selector
rules; ambiguous selectors and invalid lists change nothing. An explicit
none selects control-only operation. Offline edits take the directory lock
and apply on the next start; live edits never write behind the daemon.

Register every built-in plugin and transport in the CLI. Treat up --protocol
as ordered initial defaults for networks without an override, allowing a
protocol absent from the unit to be enabled later. Retain the targeting of
unqualified startup options and allow explicitly scoped options to configure
initially disabled protocols. Persist NULL for inherited preferences and an
empty selection distinctly in SQLite schema 8; migration preserves existing
identities, secrets, signed records and counters.

Serialize changes with network lifecycle operations and commit preferences
before applying or announcing them. Retire only the affected network's data
links and E2E channels, cancel pending opens, and reject obsolete completion
results by attempt id. Clear peer data channels when authenticated protocol
capabilities change while retaining control sessions and topology. Replay
allocations and peer identities after asynchronously prepared plugins become
ready. A control-only start defers creation of the agent's single interface
until data is enabled; plugins receive a sink that can use it later. Automatic
carrier fallback continues to preserve E2E state; explicit policy changes
renegotiate it. Identity derivation and peer wire formats are unchanged.

Add a collapsible protocols row to each tray network tile, with a catalog
provided by the daemon, descriptions, immediately applied checkboxes and
preference-order buttons. Keep editing disabled until the worker refreshes
status so a second click cannot overwrite an edit using a stale snapshot.
Local IPC wire version is 20 for the new request and report fields; upgrade
and restart agent, CLI and tray together. Crate release versions remain unchanged; the requested RC tag is v0.1.0-rc.30.

Validation on Linux through nix develop:
- cargo fmt --all -- --check
- cargo clippy --locked --workspace --all-targets -- -D warnings
- cargo test --locked --workspace --all-targets: 509 passed, 2 existing ignored
  tests, with inherited TSUNAGI_CONTROL_SOCKET and TSUNAGI_CONTROL_GROUP removed

Tests use real iroh membership, SQLite, UDP, AWG and WireGuard encryption,
QUIC carriers and memory TUNs. Cover either endpoint-id role, full-size packet
delivery after switching, an unaffected second active network, saved selection
after restart, empty/invalid selections, first enablement without restart,
rapid changes racing old opens, live and offline CLI changes, startup-absent
protocols and preservation of signed state through migration. Earlier compile
and focused-test iterations caught initializer mistakes, a short test secret,
asynchronous plugin allocation readiness, and an inherited system socket
path; corrected before the successful final checks. Plain cargo was unavailable
in the host shell, so validation used the Nix toolchain. Manual tray interaction,
macOS/Windows, privileged host TUNs and public-network traversal were not run.
2026-10-12 16:19:18 +01:00

774 lines
26 KiB
Rust

//! Real membership, UDP sockets, pair negotiation and nested WireGuard encryption.
#![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
use bytes::Bytes;
use std::{
net::Ipv4Addr,
path::Path,
sync::{
Arc,
atomic::{AtomicBool, AtomicU64, Ordering},
},
time::Duration,
};
use tempfile::TempDir;
use tsunagi::dataplane::IpPlugin;
use tsunagi::dataplane::transport::{
ControlSender, PacketLink, PacketTransport, SharedLink, TransportError,
};
use tsunagi::discovery::SharedMemoryDiscovery;
use tsunagi::overlay::{MemoryTun, MemoryTunFactory};
use tsunagi::testing::{config_with, network, wait_for_peers, wait_until};
use tsunagi::{Agent, BoxFuture, NetworkId};
use tsunagi_awg::{AWG_PROTOCOL, AwgPlugin, AwgTransport};
use tsunagi_wg_quic::WireguardConfig;
struct Node {
agent: Agent,
plugin: Arc<AwgPlugin>,
quic: Option<Arc<tsunagi_wg_quic::WireguardPlugin>>,
transport: Arc<AwgTransport>,
tuns: MemoryTunFactory,
loss: Arc<AtomicBool>,
}
impl Node {
async fn open(root: &Path, discovery: &SharedMemoryDiscovery, interface: &str) -> Self {
Self::open_with_fallback(root, discovery, interface, false).await
}
async fn open_with_fallback(
root: &Path,
discovery: &SharedMemoryDiscovery,
interface: &str,
fallback: bool,
) -> Self {
Self::open_config(root, discovery, interface, fallback, 1280).await
}
async fn open_config(
root: &Path,
discovery: &SharedMemoryDiscovery,
interface: &str,
fallback: bool,
mtu: u32,
) -> Self {
Self::open_selected(root, discovery, interface, fallback, mtu, None).await
}
async fn open_selected(
root: &Path,
discovery: &SharedMemoryDiscovery,
interface: &str,
fallback: bool,
mtu: u32,
default_protocols: Option<Vec<String>>,
) -> Self {
let identity =
tsunagi::storage::StateStore::open(tsunagi::StoragePaths::under(root).state_db())
.unwrap()
.load_or_create_device_identity()
.unwrap();
let transport = AwgTransport::new(identity.endpoint_id(), Ipv4Addr::LOCALHOST);
let plugin = AwgPlugin::open(
WireguardConfig::new(root.join("awg"))
.with_mtu(mtu)
.with_reconcile(Duration::from_millis(20), Duration::from_millis(250)),
transport.clone(),
)
.await
.unwrap();
let loss = Arc::new(AtomicBool::new(false));
let faults = Arc::new(FaultTransport {
inner: transport.clone(),
loss: loss.clone(),
});
let tuns = MemoryTunFactory::new();
let mut config = config_with(root, discovery)
.with_interface(Arc::new(tuns.clone()), interface, mtu)
.with_plugin(plugin.clone() as Arc<dyn IpPlugin>)
.with_custom_transport(AWG_PROTOCOL, faults);
let mut quic_plugin = None;
if fallback {
let quic = tsunagi_wg_quic::WireguardPlugin::open(
WireguardConfig::new(root.join("wg-quic"))
.with_mtu(mtu)
.with_reconcile(Duration::from_millis(20), Duration::from_millis(250)),
)
.await
.unwrap();
config = config.with_plugin(quic.clone());
quic_plugin = Some(quic);
}
config.default_protocols = default_protocols;
let agent = Agent::spawn(config).await.unwrap();
let inbound_agent = agent.clone();
let inbound_transport = transport.clone();
let inbound_loss = loss.clone();
tokio::spawn(async move {
while let Some(mut link) = inbound_transport.next_inbound().await {
link.link = impaired(link.link, inbound_loss.clone());
let _ = inbound_agent.install_inbound_link(link).await;
}
});
Self {
agent,
plugin,
quic: quic_plugin,
transport,
tuns,
loss,
}
}
async fn ready(&self, id: NetworkId, n: usize) {
wait_until("AWG outer paths and end-to-end handshakes", || async {
(self
.transport
.overview(id)
.iter()
.filter(|p| !p.closed && !p.path.contains("establishing"))
.count()
== n
&& self
.plugin
.overview(id)?
.peers
.iter()
.filter(|p| {
p.tunnel
.as_ref()
.is_some_and(|t| t.health.is_up() && t.path.contains("awg UDP via"))
})
.count()
== n)
.then_some(())
})
.await;
}
fn tun(&self) -> Arc<MemoryTun> {
self.tuns
.device(&self.agent.overlay().unwrap().interface)
.unwrap()
}
fn addr(&self, id: NetworkId) -> Ipv4Addr {
self.plugin
.overview(id)
.unwrap()
.overlay_address_v4
.unwrap()
}
}
fn packet(source: Ipv4Addr, dest: Ipv4Addr, len: usize) -> Bytes {
let mut bytes = vec![0; len];
bytes[0] = 0x45;
bytes[2..4].copy_from_slice(&(len as u16).to_be_bytes());
bytes[8] = 64;
bytes[9] = 253;
bytes[12..16].copy_from_slice(&source.octets());
bytes[16..20].copy_from_slice(&dest.octets());
rand::fill(&mut bytes[20..]);
Bytes::from(bytes)
}
async fn exchange(a: &Node, b: &Node, id: NetworkId) {
for len in [64, 1097, 1280] {
let bytes = packet(a.addr(id), b.addr(id), len);
a.tun().push_from_os(bytes.clone());
assert_eq!(
tokio::time::timeout(Duration::from_secs(5), b.tun().pop_to_os())
.await
.unwrap()
.unwrap(),
bytes
);
}
}
#[tokio::test]
async fn a_control_only_agent_enables_real_data_without_restart_and_cancels_stale_attempts() {
let discovery = SharedMemoryDiscovery::new();
let roots = [TempDir::new().unwrap(), TempDir::new().unwrap()];
let a = Node::open_selected(
roots[0].path(),
&discovery,
"initial-none-a",
true,
1280,
Some(vec![]),
)
.await;
let b = Node::open_selected(
roots[1].path(),
&discovery,
"initial-none-b",
true,
1280,
Some(vec![]),
)
.await;
let (name, secret) = network("enable-after-control-only");
let id = a.agent.join_network(&name, &secret).await.unwrap();
b.agent.join_network(&name, &secret).await.unwrap();
wait_for_peers(&a.agent, id, 1).await;
wait_for_peers(&b.agent, id, 1).await;
assert!(a.agent.overlay().is_none());
assert!(b.agent.overlay().is_none());
for node in [&a, &b] {
assert!(
node.agent
.network_status(id)
.await
.unwrap()
.protocols
.is_empty()
);
node.agent
.set_protocols(id, vec!["awg".into()])
.await
.unwrap();
assert!(node.agent.overlay().is_some());
}
a.ready(id, 1).await;
b.ready(id, 1).await;
exchange(&a, &b, id).await;
let before = a.agent.overlay().unwrap().interface;
// Changes race unfinished opens and prepared plugin callbacks; the last
// selection must win even if an earlier open has completed in its queue.
for selection in [
vec!["wg-quic".into()],
vec![],
vec!["awg".into()],
vec![],
vec!["awg".into()],
] {
a.agent.set_protocols(id, selection).await.unwrap();
}
a.ready(id, 1).await;
b.ready(id, 1).await;
exchange(&a, &b, id).await;
assert_eq!(a.agent.overlay().unwrap().interface, before);
for node in [&a, &b] {
let status = node.agent.network_status(id).await.unwrap();
assert_eq!(status.protocols, ["awg"]);
assert_eq!(status.metrics.sessions_established, 1);
assert_eq!(status.metrics.disconnects, 0);
}
a.agent.shutdown().await;
b.agent.shutdown().await;
}
#[tokio::test]
async fn runtime_protocol_selection_replaces_real_tunnels_and_survives_restart() {
let discovery = SharedMemoryDiscovery::new();
let roots = [TempDir::new().unwrap(), TempDir::new().unwrap()];
let a = Node::open_with_fallback(roots[0].path(), &discovery, "runtime-a", true).await;
let b = Node::open_with_fallback(roots[1].path(), &discovery, "runtime-b", true).await;
let (name, secret) = network("runtime-protocols");
let id = a.agent.join_network(&name, &secret).await.unwrap();
b.agent.join_network(&name, &secret).await.unwrap();
a.ready(id, 1).await;
b.ready(id, 1).await;
exchange(&a, &b, id).await;
let (other_name, other_secret, other_id) = loop {
let (name, secret) = network("unchanged-runtime-network");
let other_id = tsunagi::identity::NetworkKeys::derive(&name, &secret).network_id();
if tsunagi::state::derived_ipv4_range(id) != tsunagi::state::derived_ipv4_range(other_id) {
break (name, secret, other_id);
}
};
a.agent
.join_network(&other_name, &other_secret)
.await
.unwrap();
b.agent
.join_network(&other_name, &other_secret)
.await
.unwrap();
a.ready(other_id, 1).await;
b.ready(other_id, 1).await;
let other_before = a
.agent
.network_status(other_id)
.await
.unwrap()
.metrics
.data_links_established;
for node in [&a, &b] {
let before = node.agent.network_status(id).await.unwrap().protocols;
for invalid in [vec!["unknown".into()], vec!["awg".into(), "awg".into()]] {
assert!(node.agent.set_protocols(id, invalid).await.is_err());
assert_eq!(
node.agent.network_status(id).await.unwrap().protocols,
before
);
}
}
// Exercise updates initiated by either endpoint-id role, including an
// empty set. Membership and the control session stay alive throughout.
for node in [&a, &b] {
node.agent.set_protocols(id, Vec::new()).await.unwrap();
wait_until("peer accepts control-only selection", || async {
let other = if node.agent.endpoint_id() == a.agent.endpoint_id() {
&b
} else {
&a
};
let status = other.agent.network_status(id).await.ok()?;
(status.peers.len() == 1
&& status.peers[0].protocols.is_empty()
&& matches!(status.peers[0].data_path, tsunagi::agent::DataPath::None))
.then_some(())
})
.await;
assert_eq!(node.agent.network_status(id).await.unwrap().peers.len(), 1);
node.agent
.set_protocols(id, vec!["wg-quic".into(), "awg".into()])
.await
.unwrap();
}
a.agent
.set_protocols(id, vec!["wg-quic".into()])
.await
.unwrap();
wait_until("real QUIC replaces AWG", || async {
let a_status = a.agent.network_status(id).await.ok()?;
let b_status = b.agent.network_status(id).await.ok()?;
(a_status.peers[0].protocols == ["wg-quic"]
&& b_status.peers[0].protocols == ["wg-quic"]
&& !matches!(a_status.peers[0].data_path, tsunagi::agent::DataPath::None)
&& !matches!(b_status.peers[0].data_path, tsunagi::agent::DataPath::None)
&& a.transport.overview(id).iter().all(|p| p.closed)
&& b.transport.overview(id).iter().all(|p| p.closed))
.then_some(())
})
.await;
// Get addresses from the system allocation: the disabled AWG plugin no
// longer has a live view of this network.
for (source, dest) in [(&a, &b), (&b, &a)] {
wait_until("QUIC end-to-end handshake", || async {
source
.quic
.as_ref()?
.overview(id)?
.peers
.iter()
.any(|p| p.tunnel.as_ref().is_some_and(|t| t.health.is_up()))
.then_some(())
})
.await;
let addr = |n: &Node| {
n.quic
.as_ref()
.unwrap()
.overview(id)
.unwrap()
.overlay_address_v4
.unwrap()
};
let bytes = packet(addr(source), addr(dest), 1280);
source.tun().push_from_os(bytes.clone());
assert_eq!(
tokio::time::timeout(Duration::from_secs(5), dest.tun().pop_to_os())
.await
.unwrap()
.unwrap(),
bytes
);
}
assert_eq!(
a.agent
.network_status(other_id)
.await
.unwrap()
.metrics
.data_links_established,
other_before
);
exchange(&a, &b, other_id).await;
a.agent.shutdown().await;
let restarted = Node::open_with_fallback(roots[0].path(), &discovery, "runtime-a", true).await;
wait_for_peers(&restarted.agent, id, 1).await;
assert_eq!(
restarted.agent.network_status(id).await.unwrap().protocols,
["wg-quic"]
);
assert_eq!(
b.agent.network_status(other_id).await.unwrap().protocols,
["awg", "wg-quic"]
);
restarted.ready(other_id, 1).await;
b.ready(other_id, 1).await;
exchange(&restarted, &b, other_id).await;
restarted
.agent
.set_protocols(id, vec!["awg".into()])
.await
.unwrap();
restarted.ready(id, 1).await;
b.ready(id, 1).await;
exchange(&restarted, &b, id).await;
restarted.agent.shutdown().await;
b.agent.shutdown().await;
}
#[tokio::test]
async fn real_pairs_carry_full_size_packets_and_restart_with_fresh_profiles() {
tsunagi::testing::init_tracing();
let discovery = SharedMemoryDiscovery::new();
let roots = [
TempDir::new().unwrap(),
TempDir::new().unwrap(),
TempDir::new().unwrap(),
];
let a = Node::open(roots[0].path(), &discovery, "awga").await;
let b = Node::open(roots[1].path(), &discovery, "awgb").await;
let c = Node::open(roots[2].path(), &discovery, "awgc").await;
let (name, secret) = network("awg-pairs");
let id = a.agent.join_network(&name, &secret).await.unwrap();
b.agent.join_network(&name, &secret).await.unwrap();
c.agent.join_network(&name, &secret).await.unwrap();
for node in [&a, &b, &c] {
wait_for_peers(&node.agent, id, 2).await;
node.ready(id, 2).await;
}
let ids: std::collections::HashSet<_> = [&a, &b, &c]
.into_iter()
.flat_map(|n| n.transport.overview(id).into_iter().map(|p| p.attempt))
.collect();
assert_eq!(
ids.len(),
3,
"one independent profile for each of three pairs"
);
exchange(&a, &b, id).await;
exchange(&b, &a, id).await;
exchange(&a, &c, id).await;
let old_ports: Vec<_> = a
.transport
.overview(id)
.into_iter()
.filter_map(|p| p.local_port)
.collect();
a.agent.shutdown().await;
for port in old_ports {
wait_until("old pair socket released", || async {
tokio::net::UdpSocket::bind((Ipv4Addr::LOCALHOST, port))
.await
.ok()
})
.await;
}
let restarted = Node::open(roots[0].path(), &discovery, "awga").await;
restarted.ready(id, 2).await;
assert!(
restarted
.transport
.overview(id)
.iter()
.all(|p| !ids.contains(&p.attempt))
);
exchange(&restarted, &b, id).await;
exchange(&c, &restarted, id).await;
restarted.agent.shutdown().await;
b.agent.shutdown().await;
c.agent.shutdown().await;
assert!(
tokio::time::timeout(Duration::from_secs(1), restarted.transport.next_inbound())
.await
.unwrap()
.is_none()
);
}
// Drops datagrams at the link boundary. Membership, control, sockets, crypto,
// addressing and storage remain real. This substitutes a lossy physical path.
#[derive(Debug)]
struct FaultTransport {
inner: Arc<AwgTransport>,
loss: Arc<AtomicBool>,
}
impl PacketTransport for FaultTransport {
fn name(&self) -> &str {
AWG_PROTOCOL
}
fn as_any(&self) -> &dyn std::any::Any {
self
}
fn attach_control(&self, sender: Arc<dyn ControlSender>) {
self.inner.attach_control(sender);
}
fn on_control(
&self,
network: NetworkId,
peer: iroh::EndpointId,
protocol: &str,
bytes: &[u8],
) -> Result<(), TransportError> {
self.inner.on_control(network, peer, protocol, bytes)
}
fn open<'a>(
&'a self,
network: NetworkId,
peer: iroh::EndpointId,
protocol: &'a str,
) -> BoxFuture<'a, Result<SharedLink, TransportError>> {
Box::pin(async move {
Ok(impaired(
self.inner.open(network, peer, protocol).await?,
self.loss.clone(),
))
})
}
}
fn impaired(raw: SharedLink, loss: Arc<AtomicBool>) -> SharedLink {
Arc::new(FaultLink {
raw,
loss,
sequence: AtomicU64::new(0),
})
}
#[derive(Debug)]
struct FaultLink {
raw: SharedLink,
loss: Arc<AtomicBool>,
sequence: AtomicU64,
}
impl PacketLink for FaultLink {
fn network(&self) -> NetworkId {
self.raw.network()
}
fn peer(&self) -> iroh::EndpointId {
self.raw.peer()
}
fn max_datagram_size(&self) -> usize {
self.raw.max_datagram_size()
}
fn send(&self, bytes: Bytes) -> Result<(), TransportError> {
if self.loss.load(Ordering::Relaxed)
&& !self
.sequence
.fetch_add(1, Ordering::Relaxed)
.is_multiple_of(5)
{
Ok(())
} else {
self.raw.send(bytes)
}
}
fn recv(&self) -> BoxFuture<'_, Option<Bytes>> {
self.raw.recv()
}
fn closed(&self) -> BoxFuture<'_, ()> {
self.raw.closed()
}
fn is_closed(&self) -> bool {
self.raw.is_closed()
}
fn close(&self) {
self.raw.close();
}
fn path_description(&self) -> String {
self.raw.path_description()
}
}
#[tokio::test]
async fn persistent_runtime_loss_retires_the_pair_and_negotiates_fresh_parameters() {
let discovery = SharedMemoryDiscovery::new();
let roots = [TempDir::new().unwrap(), TempDir::new().unwrap()];
let a = Node::open(roots[0].path(), &discovery, "lossa").await;
let b = Node::open(roots[1].path(), &discovery, "lossb").await;
let (name, secret) = network("awg-loss");
let id = a.agent.join_network(&name, &secret).await.unwrap();
b.agent.join_network(&name, &secret).await.unwrap();
a.ready(id, 1).await;
b.ready(id, 1).await;
exchange(&a, &b, id).await;
let old = a.transport.overview(id)[0].attempt;
let mut events = a.agent.subscribe();
a.loss.store(true, Ordering::Relaxed);
tsunagi::testing::wait_event(&mut events, |event| match event {
tsunagi::Event::DataLinkDown {
network, reason, ..
} if *network == id && reason.contains("delivery checks") => Some(()),
_ => None,
})
.await;
a.loss.store(false, Ordering::Relaxed);
wait_until("fresh AWG profile after runtime loss", || async {
a.transport
.overview(id)
.iter()
.any(|p| p.attempt != old && !p.closed && !p.path.contains("establishing"))
.then_some(())
})
.await;
a.ready(id, 1).await;
b.ready(id, 1).await;
let initiator = if a.agent.endpoint_id().as_bytes() < b.agent.endpoint_id().as_bytes() {
&a
} else {
&b
};
let received = initiator.plugin.overview(id).unwrap().peers[0]
.tunnel
.as_ref()
.unwrap()
.stats
.rx_packets;
let attempt = initiator.transport.overview(id)[0].attempt;
wait_until(
"fresh pair delivery checks answered after installation",
|| async {
let view = initiator.plugin.overview(id)?;
(view.peers.first()?.tunnel.as_ref()?.stats.rx_packets >= received + 3).then_some(())
},
)
.await;
assert_eq!(initiator.transport.overview(id)[0].attempt, attempt);
wait_for_peers(&a.agent, id, 1).await;
exchange(&a, &b, id).await;
exchange(&b, &a, id).await;
a.agent.shutdown().await;
b.agent.shutdown().await;
}
#[tokio::test]
async fn runtime_loss_falls_back_to_real_iroh_without_interrupting_control_or_ip() {
let discovery = SharedMemoryDiscovery::new();
let roots = [TempDir::new().unwrap(), TempDir::new().unwrap()];
let a = Node::open_with_fallback(roots[0].path(), &discovery, "fallba", true).await;
let b = Node::open_with_fallback(roots[1].path(), &discovery, "fallbb", true).await;
let (name, secret) = network("awg-fallback");
let id = a.agent.join_network(&name, &secret).await.unwrap();
b.agent.join_network(&name, &secret).await.unwrap();
a.ready(id, 1).await;
b.ready(id, 1).await;
exchange(&a, &b, id).await;
let mut events = a.agent.subscribe();
a.loss.store(true, Ordering::Relaxed);
tsunagi::testing::wait_event(&mut events, |event| match event {
tsunagi::Event::DataLinkDown {
network, reason, ..
} if *network == id && reason.contains("delivery checks") => Some(()),
_ => None,
})
.await;
for node in [&a, &b] {
wait_until("fallback carrier is wg-quic",||async {
let status=node.agent.status().await.ok()?;
let network=status.networks.iter().find(|n|n.network_id==id)?;
(network.members.iter().any(|m|matches!(&m.data_path,tsunagi::agent::DataPath::Direct{transport} if transport=="wg-quic"))).then_some(())
}).await;
wait_for_peers(&node.agent, id, 1).await;
}
exchange(&a, &b, id).await;
exchange(&b, &a, id).await;
a.agent.shutdown().await;
b.agent.shutdown().await;
}
#[tokio::test]
async fn opaque_pair_carrier_fragments_its_full_advertised_capacity() {
let discovery = SharedMemoryDiscovery::new();
let roots = [TempDir::new().unwrap(), TempDir::new().unwrap()];
let mut nodes = Vec::new();
for root in &roots {
let identity = tsunagi::storage::StateStore::open(
tsunagi::StoragePaths::under(root.path()).state_db(),
)
.unwrap()
.load_or_create_device_identity()
.unwrap();
let transport = AwgTransport::new(identity.endpoint_id(), Ipv4Addr::LOCALHOST);
let agent = Agent::spawn(
config_with(root.path(), &discovery)
.with_custom_transport(AWG_PROTOCOL, transport.clone()),
)
.await
.unwrap();
nodes.push((agent, transport));
}
let (name, secret) = network("awg-capacity");
let id = nodes[0].0.join_network(&name, &secret).await.unwrap();
nodes[1].0.join_network(&name, &secret).await.unwrap();
for (i, (agent, transport)) in nodes.iter().enumerate() {
wait_for_peers(agent, id, 1).await;
// This fixture tests only the transport contract: register the member
// after the real core has authenticated it, without an IP plugin/TUN.
transport.allow_peer(id, nodes[1 - i].0.endpoint_id());
}
nodes.sort_by_key(|(agent, _)| *agent.endpoint_id().as_bytes());
let outgoing = nodes[0]
.1
.open(id, nodes[1].0.endpoint_id(), AWG_PROTOCOL)
.await
.unwrap();
let incoming = tokio::time::timeout(Duration::from_secs(5), nodes[1].1.next_inbound())
.await
.unwrap()
.unwrap()
.link;
for (from, to) in [(&outgoing, &incoming), (&incoming, &outgoing)] {
let mut bytes = vec![0; from.max_datagram_size()];
rand::fill(&mut bytes[..]);
let bytes = Bytes::from(bytes);
from.send(bytes.clone()).unwrap();
assert_eq!(
tokio::time::timeout(Duration::from_secs(5), to.recv())
.await
.unwrap()
.unwrap(),
bytes
);
assert!(matches!(
from.send(Bytes::from(vec![0; from.max_datagram_size() + 1])),
Err(TransportError::TooLarge { .. })
));
}
outgoing.close();
incoming.close();
for (agent, transport) in nodes {
transport.shutdown();
agent.shutdown().await;
}
}
#[tokio::test]
async fn encrypted_health_checks_fit_a_smaller_peers_configured_interface_mtu() {
let discovery = SharedMemoryDiscovery::new();
let roots = [TempDir::new().unwrap(), TempDir::new().unwrap()];
let a = Node::open_config(roots[0].path(), &discovery, "smalla", false, 1280).await;
let b = Node::open_config(roots[1].path(), &discovery, "smallb", false, 576).await;
let (name, secret) = network("awg-small-mtu");
let id = a.agent.join_network(&name, &secret).await.unwrap();
b.agent.join_network(&name, &secret).await.unwrap();
a.ready(id, 1).await;
b.ready(id, 1).await;
let bytes = packet(a.addr(id), b.addr(id), 576);
a.tun().push_from_os(bytes.clone());
assert_eq!(
tokio::time::timeout(Duration::from_secs(5), b.tun().pop_to_os())
.await
.unwrap()
.unwrap(),
bytes
);
wait_until(
"encrypted delivery checks answered with a small MTU",
|| async {
let view = a.plugin.overview(id)?;
let peer = view.peers.first()?.tunnel.as_ref()?;
(peer.stats.rx_packets >= 3).then_some(())
},
)
.await;
for node in [&a, &b] {
assert_eq!(
node.plugin.overview(id).unwrap().peers[0]
.tunnel
.as_ref()
.unwrap()
.stats
.dropped_oversize,
0
);
}
a.agent.shutdown().await;
b.agent.shutdown().await;
}