restructure package, rename module/repo

tcp/debug.go

@@ -0,0 +1,59 @@
+package tcp
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/soypat/lneto/internal"
+)
+
+func (tcb *ControlBlock) logenabled(lvl slog.Level) bool {
+	return internal.HeapAllocDebugging || (tcb.log != nil && tcb.log.Handler().Enabled(context.Background(), lvl))
+}
+
+func (tcb *ControlBlock) logattrs(lvl slog.Level, msg string, attrs ...slog.Attr) {
+	internal.LogAttrs(tcb.log, lvl, msg, attrs...)
+}
+
+func (tcb *ControlBlock) debug(msg string, attrs ...slog.Attr) {
+	tcb.logattrs(slog.LevelDebug, msg, attrs...)
+}
+
+func (tcb *ControlBlock) trace(msg string, attrs ...slog.Attr) {
+	tcb.logattrs(internal.LevelTrace, msg, attrs...)
+}
+
+func (tcb *ControlBlock) logerr(msg string, attrs ...slog.Attr) {
+	tcb.logattrs(slog.LevelError, msg, attrs...)
+}
+
+func (tcb *ControlBlock) traceSnd(msg string) {
+	tcb.trace(msg,
+		slog.String("state", tcb.state.String()),
+		slog.Uint64("pend", uint64(tcb.pending[0])),
+		slog.Uint64("snd.nxt", uint64(tcb.snd.NXT)),
+		slog.Uint64("snd.una", uint64(tcb.snd.UNA)),
+		slog.Uint64("snd.wnd", uint64(tcb.snd.WND)),
+	)
+}
+
+func (tcb *ControlBlock) traceRcv(msg string) {
+	tcb.trace(msg,
+		slog.String("state", tcb.state.String()),
+		slog.Uint64("rcv.nxt", uint64(tcb.rcv.NXT)),
+		slog.Uint64("rcv.wnd", uint64(tcb.rcv.WND)),
+		slog.Bool("challenge", tcb.challengeAck),
+	)
+}
+
+func (tcb *ControlBlock) traceSeg(msg string, seg Segment) {
+	if tcb.logenabled(internal.LevelTrace) {
+		tcb.trace(msg,
+			slog.Uint64("seg.seq", uint64(seg.SEQ)),
+			slog.Uint64("seg.ack", uint64(seg.ACK)),
+			slog.Uint64("seg.wnd", uint64(seg.WND)),
+			slog.String("seg.flags", seg.Flags.String()),
+			slog.Uint64("seg.data", uint64(seg.DATALEN)),
+		)
+	}
+}