Fix memory leak caused by Wireguard outbound

Author: jcdong98

proxy/wireguard/wireguard.go

@@ -152,6 +152,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		if err != nil {
 			return newError("failed to create TCP connection").Base(err)
 		}
+		defer conn.Close()
 
 		requestFunc = func() error {
 			defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
@@ -166,6 +167,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		if err != nil {
 			return newError("failed to create UDP connection").Base(err)
 		}
+		defer conn.Close()
 
 		requestFunc = func() error {
 			defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
@@ -183,6 +185,8 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 
 	responseDonePost := task.OnSuccess(responseFunc, task.Close(link.Writer))
 	if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
+		common.Interrupt(link.Reader)
+		common.Interrupt(link.Writer)
 		return newError("connection ends").Base(err)
 	}