Fix ResolveURL using default proxy

lib/launcher/url_parser.go

@@ -3,6 +3,7 @@ package launcher
 import (
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"net/http"
 	"net/url"
@@ -124,6 +125,9 @@ func ResolveURL(u string) (string, error) {
 		return "", err
 	}
 	defer func() { _ = res.Body.Close() }()
+	if res.StatusCode != 200 {
+		return "", fmt.Errorf("failed to get the browser version, status: %d", res.StatusCode)
+	}
 
 	data, err := io.ReadAll(res.Body)
 	utils.E(err)

lib/launcher/url_parser_test.go

@@ -0,0 +1,39 @@
+package launcher
+
+import (
+	"crypto/tls"
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+)
+
+func TestResolveURLUsingDefaultProxy(t *testing.T) {
+	setProxy("http://127.0.0.1:7890")
+
+	u, err := ResolveURL("37712")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if strings.Contains(u, "<nil>") || strings.Contains(u, `%3Cnil%3E`) {
+		t.Fatal(u)
+	}
+
+	t.Log(u)
+}
+
+func setProxy(proxy string) error {
+	proxyURL, err := url.Parse(proxy)
+	if err != nil {
+		return err
+	}
+
+	// set http default client to use proxy
+	http.DefaultClient.Transport = &http.Transport{
+		Proxy:           http.ProxyURL(proxyURL),
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+
+	return nil
+}