feat(update): 添加在线更新和定价数据获取的代理支持

针对国内服务器访问 GitHub 困难的问题，为在线更新和定价数据获取功能添加代理支持。

主要变更：
- 新增 update.proxy_url 配置项，支持 http/https/socks5/socks5h 协议
- 修改 GitHubReleaseClient 和 PricingRemoteClient 支持代理配置
- 更新 Wire 依赖注入，通过 Provider 函数传递配置
- 更新 Docker 配置文件，支持通过 UPDATE_PROXY_URL 环境变量设置代理

配置示例：
  update:
    proxy_url: "http://127.0.0.1:7890"

Docker 环境变量：
  UPDATE_PROXY_URL=http://host.docker.internal:7890

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/cmd/server/wire_gen.go

@@ -114,7 +114,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	adminRedeemHandler := admin.NewRedeemHandler(adminService)
 	settingHandler := admin.NewSettingHandler(settingService, emailService, turnstileService)
 	updateCache := repository.NewUpdateCache(redisClient)
-	gitHubReleaseClient := repository.NewGitHubReleaseClient()
+	gitHubReleaseClient := repository.ProvideGitHubReleaseClient(configConfig)
 	serviceBuildInfo := provideServiceBuildInfo(buildInfo)
 	updateService := service.ProvideUpdateService(updateCache, gitHubReleaseClient, serviceBuildInfo)
 	systemHandler := handler.ProvideSystemHandler(updateService)
@@ -125,7 +125,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	userAttributeService := service.NewUserAttributeService(userAttributeDefinitionRepository, userAttributeValueRepository)
 	userAttributeHandler := admin.NewUserAttributeHandler(userAttributeService)
 	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, settingHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler)
-	pricingRemoteClient := repository.NewPricingRemoteClient(configConfig)
+	pricingRemoteClient := repository.ProvidePricingRemoteClient(configConfig)
 	pricingService, err := service.ProvidePricingService(configConfig, pricingRemoteClient)
 	if err != nil {
 		return nil, err

backend/internal/config/config.go

@@ -52,6 +52,15 @@ type Config struct {
 	RunMode      string             `mapstructure:"run_mode" yaml:"run_mode"`
 	Timezone     string             `mapstructure:"timezone"` // e.g. "Asia/Shanghai", "UTC"
 	Gemini       GeminiConfig       `mapstructure:"gemini"`
+	Update       UpdateConfig       `mapstructure:"update"`
+}
+
+// UpdateConfig 在线更新相关配置
+type UpdateConfig struct {
+	// ProxyURL 用于访问 GitHub 的代理地址
+	// 支持 http/https/socks5/socks5h 协议
+	// 例如: "http://127.0.0.1:7890", "socks5://127.0.0.1:1080"
+	ProxyURL string `mapstructure:"proxy_url"`
 }
 
 type GeminiConfig struct {
@@ -558,6 +567,10 @@ func setDefaults() {
 	viper.SetDefault("gemini.oauth.client_secret", "")
 	viper.SetDefault("gemini.oauth.scopes", "")
 	viper.SetDefault("gemini.quota.policy", "")
+
+	// Update - 在线更新配置
+	// 代理地址为空表示直连 GitHub（适用于海外服务器）
+	viper.SetDefault("update.proxy_url", "")
 }
 
 func (c *Config) Validate() error {

backend/internal/repository/github_release_service.go

@@ -15,22 +15,32 @@ import (
 
 type githubReleaseClient struct {
 	httpClient         *http.Client
-	allowPrivateHosts bool
+	downloadHTTPClient *http.Client
 }
 
-func NewGitHubReleaseClient() service.GitHubReleaseClient {
+// NewGitHubReleaseClient 创建 GitHub Release 客户端
-	allowPrivate := false
+// proxyURL 为空时直连 GitHub，支持 http/https/socks5/socks5h 协议
+func NewGitHubReleaseClient(proxyURL string) service.GitHubReleaseClient {
 	sharedClient, err := httpclient.GetClient(httpclient.Options{
 		Timeout:  30 * time.Second,
-		ValidateResolvedIP: true,
+		ProxyURL: proxyURL,
-		AllowPrivateHosts:  allowPrivate,
 	})
 	if err != nil {
 		sharedClient = &http.Client{Timeout: 30 * time.Second}
 	}
+
+	// 下载客户端需要更长的超时时间
+	downloadClient, err := httpclient.GetClient(httpclient.Options{
+		Timeout:  10 * time.Minute,
+		ProxyURL: proxyURL,
+	})
+	if err != nil {
+		downloadClient = &http.Client{Timeout: 10 * time.Minute}
+	}
+
 	return &githubReleaseClient{
 		httpClient:         sharedClient,
-		allowPrivateHosts: allowPrivate,
+		downloadHTTPClient: downloadClient,
 	}
 }
 
@@ -68,15 +78,8 @@ func (c *githubReleaseClient) DownloadFile(ctx context.Context, url, dest string
 		return err
 	}
 
-	downloadClient, err := httpclient.GetClient(httpclient.Options{
+	// 使用预配置的下载客户端（已包含代理配置）
-		Timeout:            10 * time.Minute,
+	resp, err := c.downloadHTTPClient.Do(req)
-		ValidateResolvedIP: true,
-		AllowPrivateHosts:  c.allowPrivateHosts,
-	})
-	if err != nil {
-		downloadClient = &http.Client{Timeout: 10 * time.Minute}
-	}
-	resp, err := downloadClient.Do(req)
 	if err != nil {
 		return err
 	}

backend/internal/repository/github_release_service_test.go

@@ -40,7 +40,7 @@ func (t *testTransport) RoundTrip(req *http.Request) (*http.Response, error) {
 func newTestGitHubReleaseClient() *githubReleaseClient {
 	return &githubReleaseClient{
 		httpClient:         &http.Client{},
-		allowPrivateHosts: true,
+		downloadHTTPClient: &http.Client{},
 	}
 }
 
@@ -234,7 +234,7 @@ func (s *GitHubReleaseServiceSuite) TestFetchLatestRelease_Success() {
 		httpClient: &http.Client{
 			Transport: &testTransport{testServerURL: s.srv.URL},
 		},
-		allowPrivateHosts: true,
+		downloadHTTPClient: &http.Client{},
 	}
 
 	release, err := s.client.FetchLatestRelease(context.Background(), "test/repo")
@@ -254,7 +254,7 @@ func (s *GitHubReleaseServiceSuite) TestFetchLatestRelease_Non200() {
 		httpClient: &http.Client{
 			Transport: &testTransport{testServerURL: s.srv.URL},
 		},
-		allowPrivateHosts: true,
+		downloadHTTPClient: &http.Client{},
 	}
 
 	_, err := s.client.FetchLatestRelease(context.Background(), "test/repo")
@@ -272,7 +272,7 @@ func (s *GitHubReleaseServiceSuite) TestFetchLatestRelease_InvalidJSON() {
 		httpClient: &http.Client{
 			Transport: &testTransport{testServerURL: s.srv.URL},
 		},
-		allowPrivateHosts: true,
+		downloadHTTPClient: &http.Client{},
 	}
 
 	_, err := s.client.FetchLatestRelease(context.Background(), "test/repo")
@@ -288,7 +288,7 @@ func (s *GitHubReleaseServiceSuite) TestFetchLatestRelease_ContextCancel() {
 		httpClient: &http.Client{
 			Transport: &testTransport{testServerURL: s.srv.URL},
 		},
-		allowPrivateHosts: true,
+		downloadHTTPClient: &http.Client{},
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())

backend/internal/repository/pricing_service.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Wei-Shaw/sub2api/internal/config"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/httpclient"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 )
@@ -17,17 +16,12 @@ type pricingRemoteClient struct {
 	httpClient *http.Client
 }
 
-func NewPricingRemoteClient(cfg *config.Config) service.PricingRemoteClient {
+// NewPricingRemoteClient 创建定价数据远程客户端
-	allowPrivate := false
+// proxyURL 为空时直连，支持 http/https/socks5/socks5h 协议
-	validateResolvedIP := true
+func NewPricingRemoteClient(proxyURL string) service.PricingRemoteClient {
-	if cfg != nil {
-		allowPrivate = cfg.Security.URLAllowlist.AllowPrivateHosts
-		validateResolvedIP = cfg.Security.URLAllowlist.Enabled
-	}
 	sharedClient, err := httpclient.GetClient(httpclient.Options{
 		Timeout:  30 * time.Second,
-		ValidateResolvedIP: validateResolvedIP,
+		ProxyURL: proxyURL,
-		AllowPrivateHosts:  allowPrivate,
 	})
 	if err != nil {
 		sharedClient = &http.Client{Timeout: 30 * time.Second}

backend/internal/repository/pricing_service_test.go

@@ -6,7 +6,6 @@ import (
 	"net/http/httptest"
 	"testing"
 
-	"github.com/Wei-Shaw/sub2api/internal/config"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 )
@@ -20,13 +19,7 @@ type PricingServiceSuite struct {
 
 func (s *PricingServiceSuite) SetupTest() {
 	s.ctx = context.Background()
-	client, ok := NewPricingRemoteClient(&config.Config{
+	client, ok := NewPricingRemoteClient("").(*pricingRemoteClient)
-		Security: config.SecurityConfig{
-			URLAllowlist: config.URLAllowlistConfig{
-				AllowPrivateHosts: true,
-			},
-		},
-	}).(*pricingRemoteClient)
 	require.True(s.T(), ok, "type assertion failed")
 	s.client = client
 }

backend/internal/repository/wire.go

@@ -25,6 +25,18 @@ func ProvideConcurrencyCache(rdb *redis.Client, cfg *config.Config) service.Conc
 	return NewConcurrencyCache(rdb, cfg.Gateway.ConcurrencySlotTTLMinutes, waitTTLSeconds)
 }
 
+// ProvideGitHubReleaseClient 创建 GitHub Release 客户端
+// 从配置中读取代理设置，支持国内服务器通过代理访问 GitHub
+func ProvideGitHubReleaseClient(cfg *config.Config) service.GitHubReleaseClient {
+	return NewGitHubReleaseClient(cfg.Update.ProxyURL)
+}
+
+// ProvidePricingRemoteClient 创建定价数据远程客户端
+// 从配置中读取代理设置，支持国内服务器通过代理访问 GitHub 上的定价数据
+func ProvidePricingRemoteClient(cfg *config.Config) service.PricingRemoteClient {
+	return NewPricingRemoteClient(cfg.Update.ProxyURL)
+}
+
 // ProviderSet is the Wire provider set for all repositories
 var ProviderSet = wire.NewSet(
 	NewUserRepository,
@@ -53,8 +65,8 @@ var ProviderSet = wire.NewSet(
 
 	// HTTP service ports (DI Strategy A: return interface directly)
 	NewTurnstileVerifier,
-	NewPricingRemoteClient,
+	ProvidePricingRemoteClient,
-	NewGitHubReleaseClient,
+	ProvideGitHubReleaseClient,
 	NewProxyExitInfoProber,
 	NewClaudeUsageFetcher,
 	NewClaudeOAuthClient,

deploy/.env.example

@@ -123,3 +123,17 @@ GEMINI_OAUTH_SCOPES=
 # Example:
 # GEMINI_QUOTA_POLICY={"tiers":{"LEGACY":{"pro_rpd":50,"flash_rpd":1500,"cooldown_minutes":30},"PRO":{"pro_rpd":1500,"flash_rpd":4000,"cooldown_minutes":5},"ULTRA":{"pro_rpd":2000,"flash_rpd":0,"cooldown_minutes":5}}}
 GEMINI_QUOTA_POLICY=
+
+# -----------------------------------------------------------------------------
+# Update Configuration (在线更新配置)
+# -----------------------------------------------------------------------------
+# Proxy URL for accessing GitHub (used for online updates and pricing data)
+# 用于访问 GitHub 的代理地址（用于在线更新和定价数据获取）
+# Supports: http, https, socks5, socks5h
+# Examples:
+#   HTTP proxy: http://127.0.0.1:7890
+#   SOCKS5 proxy: socks5://127.0.0.1:1080
+#   With authentication: http://user:pass@proxy.example.com:8080
+# Leave empty for direct connection (recommended for overseas servers)
+# 留空表示直连（适用于海外服务器）
+UPDATE_PROXY_URL=

deploy/config.example.yaml

@@ -388,3 +388,18 @@ gemini:
         # Cooldown time (minutes) after hitting quota
         # 达到配额后的冷却时间（分钟）
         cooldown_minutes: 5
+
+# =============================================================================
+# Update Configuration (在线更新配置)
+# =============================================================================
+update:
+  # Proxy URL for accessing GitHub (used for online updates and pricing data)
+  # 用于访问 GitHub 的代理地址（用于在线更新和定价数据获取）
+  # Supports: http, https, socks5, socks5h
+  # Examples:
+  #   - HTTP proxy: "http://127.0.0.1:7890"
+  #   - SOCKS5 proxy: "socks5://127.0.0.1:1080"
+  #   - With authentication: "http://user:pass@proxy.example.com:8080"
+  # Leave empty for direct connection (recommended for overseas servers)
+  # 留空表示直连（适用于海外服务器）
+  proxy_url: ""

deploy/docker-compose.yml

@@ -109,6 +109,13 @@ services:
       - SECURITY_URL_ALLOWLIST_ALLOW_PRIVATE_HOSTS=${SECURITY_URL_ALLOWLIST_ALLOW_PRIVATE_HOSTS:-false}
       # Upstream hosts whitelist (comma-separated, only used when enabled=true)
       - SECURITY_URL_ALLOWLIST_UPSTREAM_HOSTS=${SECURITY_URL_ALLOWLIST_UPSTREAM_HOSTS:-}
+
+      # =======================================================================
+      # Update Configuration (在线更新配置)
+      # =======================================================================
+      # Proxy for accessing GitHub (online updates + pricing data)
+      # Examples: http://host:port, socks5://host:port
+      - UPDATE_PROXY_URL=${UPDATE_PROXY_URL:-}
     depends_on:
       postgres:
         condition: service_healthy