fix: TestStatelessReset/reuseport_off test

close listener underlying connection when reuseport is disabled and the close
method called

Signed-off-by: gfanton <8671905+gfanton@users.noreply.github.com>

p2p/transport/quic/conn.go

@@ -19,6 +19,9 @@ type pConn interface {
 	// count conn reference
 	DecreaseCount()
 	IncreaseCount()
+
+	// is reuseport enable
+	Reuseport() bool
 }
 
 type conn struct {

p2p/transport/quic/listener.go

@@ -146,7 +146,14 @@ func (l *listener) setupConn(qconn quic.Connection) (*conn, error) {
 // Close closes the listener.
 func (l *listener) Close() error {
 	defer l.conn.DecreaseCount()
-	return l.quicListener.Close()
+
+	err := l.quicListener.Close()
+
+	if !l.conn.Reuseport() {
+		// close the underlying connection
+		l.conn.Close()
+	}
+	return err
 }
 
 // Addr returns the address of this listener.

p2p/transport/quic/reuse.go

@@ -43,6 +43,10 @@ func (c *reuseConn) DecreaseCount() {
 	c.mutex.Unlock()
 }
 
+func (c *reuseConn) Reuseport() bool {
+	return true
+}
+
 func (c *reuseConn) ShouldGarbageCollect(now time.Time) bool {
 	c.mutex.Lock()
 	defer c.mutex.Unlock()

p2p/transport/quic/transport.go

@@ -58,8 +58,9 @@ type noreuseConn struct {
 	*net.UDPConn
 }
 
-func (c *noreuseConn) IncreaseCount() {}
-func (c *noreuseConn) DecreaseCount() {}
+func (c *noreuseConn) IncreaseCount()  {}
+func (c *noreuseConn) DecreaseCount()  {}
+func (c *noreuseConn) Reuseport() bool { return false }
 
 type connManager struct {
 	reuseUDP4       *reuse
@@ -406,6 +407,7 @@ func (t *transport) Listen(addr ma.Multiaddr) (tpt.Listener, error) {
 	}
 	ln, err := newListener(conn, t, t.localPeer, t.privKey, t.identity, t.rcmgr)
 	if err != nil {
+		conn.Close()
 		conn.DecreaseCount()
 		return nil, err
 	}