feat: Update balancer strategy handling and improve error responses in config parsing

Author: hiddify-com

v2/config/builder.go

@@ -288,7 +288,7 @@ func setOutbounds(options *option.Options, input *option.Options, opt *HiddifyOp
 		Tag:  OutboundRoundRobinTag,
 		Options: &option.BalancerOutboundOptions{
 			Outbounds:            tags,
-			Strategy:             "round-robin",
+			Strategy:             opt.BalancerStrategy,
 			DelayAcceptableRatio: 2,
 			// URL:       opt.ConnectionTestUrl,
 			// URLs:      opt.ConnectionTestUrls,

v2/config/config_server.go

@@ -19,7 +19,11 @@ func String(s string) *string {
 	return &s
 }
 
-func (s *server) ParseConfig(ctx context.Context, in *ParseConfigRequest) (*ParseConfigResponse, error) {
+func (s *server) ParseConfig(ctx context.Context, in *ParseConfigRequest) (resp *ParseConfigResponse, err error) {
+	defer DeferPanicToError("ParseConfig", func(recovered_err error) {
+		resp = &ParseConfigResponse{Error: String(fmt.Sprintf("%v", recovered_err))}
+		err = nil
+	})
 	ctx = libbox.BaseContext(nil)
 	config, err := ParseConfig(ctx, &ReadOptions{Path: in.Path}, in.Debug, nil, false)
 	if err != nil {
@@ -36,7 +40,11 @@ func (s *server) ParseConfig(ctx context.Context, in *ParseConfigRequest) (*Pars
 	return &ParseConfigResponse{Error: String("")}, nil
 }
 
-func (s *server) GenerateFullConfig(ctx context.Context, in *GenerateConfigRequest) (*GenerateConfigResponse, error) {
+func (s *server) GenerateFullConfig(ctx context.Context, in *GenerateConfigRequest) (resp *GenerateConfigResponse, err error) {
+	defer DeferPanicToError("GenerateFullConfig", func(recovered_err error) {
+		resp = &GenerateConfigResponse{Error: String(fmt.Sprintf("%v", recovered_err))}
+		err = nil
+	})
 	ctx = libbox.BaseContext(nil)
 	config, err := BuildConfigJson(ctx, DefaultHiddifyOptions(), &ReadOptions{Path: in.Path})
 	if err != nil {

v2/config/hiddify_option.go

@@ -20,6 +20,7 @@ type HiddifyOptions struct {
 	Region                  string `json:"region,omitempty"`
 	BlockAds                bool   `json:"block-ads,omitempty" overridable:"true"`
 	UseXrayCoreWhenPossible bool   `json:"use-xray-core-when-possible,omitempty" overridable:"true"`
+	BalancerStrategy        string `json:"balancer-strategy,omitempty" overridable:"true"`
 	// GeoIPPath        string      `json:"geoip-path"`
 	// GeoSitePath      string      `json:"geosite-path"`
 	Rules     []Rule      `json:"rules,omitempty" overridable:"true"`