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feat(client): report relay RTT diagnostics

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Expose the active QUIC connection RTT in shared client diagnostics and in the
Windows client status line. This gives operators a live relay-path latency
signal without pretending to measure end-to-end gateway or LAN latency.

The new diagnostics field defaults to unknown when older JSON snapshots omit it,
so consumers can read pre-change snapshots without special migration code. The
user-facing diagnostics now print Relay RTT only when the client has an active
QUIC measurement.

Test Plan:
- cargo fmt --check
- git diff --check
- cargo test --workspace
- cargo clippy --workspace --all-targets -- -D warnings

Refs: PLAN.md logging and diagnostics section
This commit is contained in:
ddidderr
2026-05-21 23:00:18 +02:00
parent 77025e6564
commit e69d41691a
4 changed files with 70 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crates/lanparty-client-win/src/main.rs
+9 -4
View File
@@ -458,12 +458,13 @@ async fn print_and_report_client_diagnostics(
fn format_client_diagnostics(diagnostics: &ClientDiagnostics) -> String {
let stats = diagnostics.stats();
format!(
"client diagnostics: relay reachable {} gateway connected {} route pinned {}; QUIC datagrams {} max {}; TAP found {} MAC {} MTU {} IP {}; frames tx {} rx {} broadcast tx {} rx {} datagrams tx {} rx {} drops {} malformed {}",
"client diagnostics: relay reachable {} gateway connected {} route pinned {}; QUIC datagrams {} max {} relay RTT {}; TAP found {} MAC {} MTU {} IP {}; frames tx {} rx {} broadcast tx {} rx {} datagrams tx {} rx {} drops {} malformed {}",
yes_no(diagnostics.relay().reachable()),
yes_no(diagnostics.relay().gateway_connected()),
yes_no(diagnostics.relay().route_pinned()),
yes_no(diagnostics.quic().datagram_supported()),
optional_label(diagnostics.quic().max_datagram_size()),
optional_millis_label(diagnostics.quic().relay_rtt_ms()),
yes_no(diagnostics.tap().adapter_found()),
optional_label(diagnostics.tap().mac()),
optional_label(diagnostics.tap().mtu()),
@@ -487,6 +488,10 @@ fn optional_label<T: std::fmt::Display>(value: Option<T>) -> String {
value.map_or_else(|| "unknown".to_string(), |value| value.to_string())
}
fn optional_millis_label(value: Option<u64>) -> String {
value.map_or_else(|| "unknown".to_string(), |value| format!("{value} ms"))
}
fn format_user_diagnostic(diagnostic: &UserDiagnostic) -> String {
match diagnostic.level() {
UserDiagnosticLevel::Info => diagnostic.message().to_owned(),
@@ -875,7 +880,7 @@ mod tests {
fn formats_client_diagnostics_status_line() {
let diagnostics = ClientDiagnostics::new(
RelayDiagnostics::new(true, true, true),
QuicDiagnostics::new(true, Some(1400)),
QuicDiagnostics::new(true, Some(1400)).with_relay_rtt_ms(Some(23)),
TapDiagnostics::new(
true,
Some(mac(1)),
@@ -887,7 +892,7 @@ mod tests {
assert_eq!(
format_client_diagnostics(&diagnostics),
"client diagnostics: relay reachable yes gateway connected yes route pinned yes; QUIC datagrams yes max 1400; TAP found yes MAC 02:00:00:00:00:01 MTU 1200 IP 10.73.42.51; frames tx 1 rx 2 broadcast tx 7 rx 8 datagrams tx 3 rx 4 drops 5 malformed 6"
"client diagnostics: relay reachable yes gateway connected yes route pinned yes; QUIC datagrams yes max 1400 relay RTT 23 ms; TAP found yes MAC 02:00:00:00:00:01 MTU 1200 IP 10.73.42.51; frames tx 1 rx 2 broadcast tx 7 rx 8 datagrams tx 3 rx 4 drops 5 malformed 6"
);
}
@@ -902,7 +907,7 @@ mod tests {
assert_eq!(
format_client_diagnostics(&diagnostics),
"client diagnostics: relay reachable yes gateway connected no route pinned no; QUIC datagrams no max unknown; TAP found no MAC unknown MTU unknown IP unknown; frames tx 0 rx 0 broadcast tx 0 rx 0 datagrams tx 0 rx 0 drops 0 malformed 0"
"client diagnostics: relay reachable yes gateway connected no route pinned no; QUIC datagrams no max unknown relay RTT unknown; TAP found no MAC unknown MTU unknown IP unknown; frames tx 0 rx 0 broadcast tx 0 rx 0 datagrams tx 0 rx 0 drops 0 malformed 0"
);
}