fix: ignore the new errors found by the updated golint

forwarder.go

@@ -77,7 +77,7 @@ func (e *endpointForwarder) handleConnection(ctx context.Context, conn net.Conn)
 	// Connect to the backend server
 	backend, err := e.connectToBackend(ctx)
 	if err != nil {
-		conn.Close()
+		_ = conn.Close()
 		// Could log the error here
 		return
 	}
@@ -156,14 +156,14 @@ func (e *endpointForwarder) join(left, right net.Conn) {
 	// Copy from left to right
 	go func() {
 		defer wg.Done()
-		defer right.Close()
+		defer right.Close() //nolint:errcheck
 		_, _ = io.Copy(right, left)
 	}()
 
 	// Copy from right to left
 	go func() {
 		defer wg.Done()
-		defer left.Close()
+		defer left.Close() //nolint:errcheck
 		_, _ = io.Copy(left, right)
 	}()
 

listener_test.go

@@ -54,8 +54,8 @@ func TestWrapConnWithTLS(t *testing.T) {
 
 	// Create a pipe for testing
 	serverConn, clientConn := net.Pipe()
-	defer serverConn.Close()
-	defer clientConn.Close()
+	defer serverConn.Close() //nolint:errcheck
+	defer clientConn.Close() //nolint:errcheck
 
 	// Apply TLS in a separate goroutine
 	go func() {
@@ -75,7 +75,7 @@ func TestWrapConnWithTLS(t *testing.T) {
 		}
 
 		// Close the client connection
-		clientTLS.Close()
+		_ = clientTLS.Close()
 	}()
 
 	// Wrap the server connection with TLS
@@ -101,8 +101,8 @@ func TestWrapConnWithTLS(t *testing.T) {
 func TestWrapConnWithTLSNil(t *testing.T) {
 	// Create a pipe for testing
 	conn1, conn2 := net.Pipe()
-	defer conn1.Close()
-	defer conn2.Close()
+	defer conn1.Close() //nolint:errcheck
+	defer conn2.Close() //nolint:errcheck
 
 	// Call wrapConnWithTLS with nil config
 	result := wrapConnWithTLS(conn1, nil)