Fix/ebpf free (#1057)

* Fix ebpf free call

* Add debug logs

client/internal/wgproxy/ebpf/loader.go

@@ -75,7 +75,7 @@ func (l *EBPF) Load(proxyPort, wgPort int) error {
 	return err
 }
 
-// Free free ebpf program
+// Free ebpf program
 func (l *EBPF) Free() error {
 	if l.link != nil {
 		return l.link.Close()

client/internal/wgproxy/factory.go

@@ -14,7 +14,7 @@ func (w *Factory) GetProxy() Proxy {
 
 func (w *Factory) Free() error {
 	if w.ebpfProxy != nil {
-		return w.ebpfProxy.CloseConn()
+		return w.ebpfProxy.Free()
 	}
 	return nil
 }

client/internal/wgproxy/proxy_ebpf.go

@@ -104,6 +104,7 @@ func (p *WGEBPFProxy) CloseConn() error {
 
 // Free resources
 func (p *WGEBPFProxy) Free() error {
+	log.Debugf("free up ebpf wg proxy")
 	var err1, err2, err3 error
 	if p.conn != nil {
 		err1 = p.conn.Close()

client/internal/wgproxy/proxy_userspace.go

@@ -20,6 +20,7 @@ type WGUserSpaceProxy struct {
 
 // NewWGUserSpaceProxy instantiate a user space WireGuard proxy
 func NewWGUserSpaceProxy(wgPort int) *WGUserSpaceProxy {
+	log.Debugf("instantiate new userspace proxy")
 	p := &WGUserSpaceProxy{
 		localWGListenPort: wgPort,
 	}