Fixed issue with shelly self signed certificate.

shelly/client.go

@@ -3,6 +3,7 @@ package shelly
 
 import (
 	"context"
+	"crypto/tls"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -39,11 +40,22 @@ func NewClient(rawURL, username, password string, timeout time.Duration) (*Clien
 		username: username,
 		password: password,
 		httpClient: &http.Client{
-			Timeout: timeout,
+			Timeout:   timeout,
+			Transport: insecureTLSTransport(),
 		},
 	}, nil
 }
 
+// insecureTLSTransport retains the standard HTTP transport behavior but accepts
+// certificates that are expired, self-signed, or issued for another hostname.
+func insecureTLSTransport() *http.Transport {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.TLSClientConfig = &tls.Config{
+		InsecureSkipVerify: true, // #nosec G402 -- Shelly device certificates are intentionally not verified.
+	}
+	return transport
+}
+
 // GetStatus decodes the /status response into destination.
 func (c *Client) GetStatus(ctx context.Context, destination any) error {
 	statusURL := *c.baseURL