Revamp connection handling flow to fix race condition and support info-only packets

firewall/interception/windowskext/packet.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package windowskext
@@ -23,6 +24,12 @@ type Packet struct {
 	lock          sync.Mutex
 }
 
+// InfoOnly returns whether the packet is informational only and does not
+// represent an actual packet.
+func (pkt *Packet) InfoOnly() bool {
+	return pkt.verdictRequest.flags&VerdictRequestFlagSocketAuth > 0
+}
+
 // FastTrackedByIntegration returns whether the packet has been fast-track
 // accepted by the OS integration.
 func (pkt *Packet) FastTrackedByIntegration() bool {