add: encrypted transmission

internal/transfer/client.go

@@ -201,14 +201,14 @@ func (s *Service) ask(ctx context.Context, target *discovery.Peer, targetIP stri
 	// 发送请求
 	askBody, _ := json.Marshal(task)
 
-	askUrl := fmt.Sprintf("http://%s:%d/transfer/ask", targetIP, target.Port)
+	askUrl := fmt.Sprintf("https://%s:%d/transfer/ask", targetIP, target.Port)
 
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, askUrl, bytes.NewReader(askBody))
 	req.Header.Set("Content-Type", "application/json")
 	if err != nil {
 		return TransferAskResponse{}, err
 	}
-	resp, err := http.DefaultClient.Do(req)
+	resp, err := s.httpClient.Do(req)
 	if err != nil {
 		return TransferAskResponse{}, err
 	}
@@ -234,7 +234,7 @@ func (s *Service) processTransfer(ctx context.Context, askResp TransferAskRespon
 	if err := ctx.Err(); err != nil {
 		return
 	}
-	uploadUrl, _ := url.Parse(fmt.Sprintf("http://%s:%d/transfer/upload/%s", targetIP, target.Port, task.ID))
+	uploadUrl, _ := url.Parse(fmt.Sprintf("https://%s:%d/transfer/upload/%s", targetIP, target.Port, task.ID))
 	query := uploadUrl.Query()
 	query.Add("token", askResp.Token)
 	uploadUrl.RawQuery = query.Encode()
@@ -260,7 +260,7 @@ func (s *Service) processTransfer(ctx context.Context, askResp TransferAskRespon
 	req.ContentLength = task.FileSize
 	req.Header.Set("Content-Type", "application/octet-stream")
 
-	resp, err := http.DefaultClient.Do(req)
+	resp, err := s.httpClient.Do(req)
 	if err != nil {
 		if errors.Is(err, context.Canceled) {
 			task.Status = TransferStatusCanceled

internal/transfer/service.go

@@ -2,10 +2,14 @@ package transfer
 
 import (
 	"context"
+	"crypto/tls"
 	"fmt"
 	"log/slog"
 	"mesh-drop/internal/config"
 	"mesh-drop/internal/discovery"
+	"mesh-drop/internal/security"
+	"net/http"
+	"path/filepath"
 	"sync"
 
 	"github.com/gin-gonic/gin"
@@ -28,17 +32,29 @@ type Service struct {
 	// cancelMap 存储取消操作的通道
 	// Key: TransferID, Value: context.CancelFunc
 	cancelMap sync.Map
+
+	httpClient *http.Client
 }
 
 func NewService(config *config.Config, app *application.App, notifier *notifications.NotificationService, port int, discoveryService *discovery.Service) *Service {
 	gin.SetMode(gin.ReleaseMode)
 
+	// 配置自定义 HTTP 客户端以跳过自签名证书验证
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+	httpClient := &http.Client{
+		Transport: tr,
+		Timeout:   0,
+	}
+
 	return &Service{
 		app:              app,
 		notifier:         notifier,
 		port:             port,
 		discoveryService: discoveryService,
 		config:           config,
+		httpClient:       httpClient,
 	}
 }
 
@@ -59,9 +75,19 @@ func (s *Service) Start() {
 	}
 
 	go func() {
+		configDir := config.GetConfigDir()
+		certPath := filepath.Join(configDir, "server.crt")
+		keyPath := filepath.Join(configDir, "server.key")
+
+		if err := security.EnsureCertificates(certPath, keyPath); err != nil {
+			slog.Error("Failed to generate certificates", "error", err, "component", "transfer")
+			return
+		}
+
 		addr := fmt.Sprintf(":%d", s.port)
-		slog.Info("Transfer service listening", "address", addr, "component", "transfer")
-		if err := r.Run(addr); err != nil {
+		slog.Info("Transfer service listening (HTTPS)", "address", addr, "component", "transfer")
+
+		if err := r.RunTLS(addr, certPath, keyPath); err != nil {
 			slog.Error("Transfer service error", "error", err, "component", "transfer")
 		}
 	}()