Minor refactors across the codebase to improve readability and use more efficient APIs: replace fmt.Sprintf+base64 encoding with fmt.Appendf when building Shadowsocks userInfo; compute elapsed using max(now-prev.at, window) to simplify logic; use strings.SplitSeq for splitting in two places; simplify test and goroutine loops to range-based iterations and use errgroup's Go helper; and align/clean up struct field formatting and test map literals. Mostly stylistic/efficiency changes with no intended behavior changes.
* perf(xray): compile log/traffic regexps once at package scope
GetTraffic recompiled two stats regexps on every traffic tick, and LogWriter.Write
recompiled two more on every log line. Hoist all four to package-level vars so they
compile once at load instead of per call on hot paths.
* fix(xray): guard LogWriter.lastLine against the GetResult reader race
Write is driven by the Xray process goroutine while Process.GetResult
reads lastLine from the caller's goroutine, so the unsynchronized field
is a data race under `go test -race`. Add an RWMutex and route every
write through setLastLine; GetResult reads via LastLine().
* fix(xray): bound handler gRPC calls with a deadline
AddInbound, DelInbound and the AddUser AlterInbound call used
context.Background(), so a hung core connection could block the caller
indefinitely (for example while the process restart lock is held). Give
them a 10s deadline (handlerRPCTimeout) and a nil-client guard, matching
the other handler operations.
MHSanaei