mirror of https://gitee.com/godoos/godoos.git
7 changed files with 323 additions and 14 deletions
@ -1,4 +1,4 @@ |
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package sys |
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package proxy |
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import ( |
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"fmt" |
@ -0,0 +1,242 @@ |
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package proxy |
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import ( |
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"encoding/json" |
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"fmt" |
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"godo/model" |
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"net" |
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"net/http" |
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"net/http/httputil" |
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"net/url" |
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"strconv" |
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) |
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// 创建 LocalProxy 的 HTTP 处理函数
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func CreateLocalProxyHandler(w http.ResponseWriter, r *http.Request) { |
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var lp model.LocalProxy |
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err := json.NewDecoder(r.Body).Decode(&lp) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusBadRequest) |
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return |
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} |
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err = model.Db.Create(&lp).Error |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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w.WriteHeader(http.StatusCreated) |
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json.NewEncoder(w).Encode(lp) |
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} |
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// GetLocalProxiesHandler 获取所有 LocalProxy 的 HTTP 处理函数
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func GetLocalProxiesHandler(w http.ResponseWriter, r *http.Request) { |
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if r.Method != http.MethodGet { |
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed) |
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return |
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} |
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// 获取查询参数 page 和 limit
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pageStr := r.URL.Query().Get("page") |
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limitStr := r.URL.Query().Get("limit") |
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page, err := strconv.Atoi(pageStr) |
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if err != nil || page < 1 { |
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page = 1 |
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} |
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limit, err := strconv.Atoi(limitStr) |
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if err != nil || limit < 1 { |
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limit = 10 |
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} |
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// 定义响应结构体
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type ProxyResponse struct { |
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Proxies []model.LocalProxy `json:"proxies"` |
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Total int64 `json:"total"` |
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} |
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// 修改处理函数
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proxies, total, err := model.GetLocalProxies(page, limit) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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w.Header().Set("Content-Type", "application/json") |
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response := ProxyResponse{ |
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Proxies: proxies, |
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Total: total, |
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} |
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if err := json.NewEncoder(w).Encode(response); err != nil { |
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http.Error(w, "Failed to encode response", http.StatusInternalServerError) |
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return |
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} |
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} |
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// GetLocalProxyHandler 获取单个 LocalProxy 的 HTTP 处理函数
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func GetLocalProxyHandler(w http.ResponseWriter, r *http.Request) { |
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idStr := r.URL.Query().Get("id") |
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id, err := strconv.Atoi(idStr) |
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if err != nil { |
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http.Error(w, "Invalid ID", http.StatusBadRequest) |
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return |
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} |
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var proxy model.LocalProxy |
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err = model.Db.First(&proxy, uint(id)).Error |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusNotFound) |
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return |
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} |
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w.Header().Set("Content-Type", "application/json") |
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json.NewEncoder(w).Encode(proxy) |
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} |
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// UpdateLocalProxyHandler 更新 LocalProxy 的 HTTP 处理函数
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func UpdateLocalProxyHandler(w http.ResponseWriter, r *http.Request) { |
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var lp model.LocalProxy |
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err := json.NewDecoder(r.Body).Decode(&lp) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusBadRequest) |
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return |
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} |
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err = model.Db.Model(&model.LocalProxy{}).Where("id = ?", lp.ID).Updates(lp).Error |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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w.WriteHeader(http.StatusOK) |
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json.NewEncoder(w).Encode(lp) |
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} |
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// DeleteLocalProxyHandler 删除 LocalProxy 的 HTTP 处理函数
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func DeleteLocalProxyHandler(w http.ResponseWriter, r *http.Request) { |
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idStr := r.URL.Query().Get("id") |
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id, err := strconv.Atoi(idStr) |
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if err != nil { |
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http.Error(w, "Invalid ID", http.StatusBadRequest) |
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return |
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} |
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err = model.Db.Delete(&model.LocalProxy{}, uint(id)).Error |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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w.WriteHeader(http.StatusNoContent) |
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} |
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// 初始化代理处理函数
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func InitProxyHandlers() { |
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proxies, _, err := model.GetLocalProxies(1, 1000) // 获取所有代理配置
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if err != nil { |
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fmt.Println("Failed to get local proxies:", err) |
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return |
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} |
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for _, proxy := range proxies { |
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switch proxy.ProxyType { |
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case "http": |
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go func(p model.LocalProxy) { |
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httpProxyHandler(p) |
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}(proxy) |
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case "udp": |
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// UDP 转发的处理逻辑
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go func(p model.LocalProxy) { |
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udpProxyHandler(p) |
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}(proxy) |
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case "file": |
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http.Handle(fmt.Sprintf("/file/%d/", proxy.Port), http.StripPrefix(fmt.Sprintf("/file/%d/", proxy.Port), http.FileServer(http.Dir(proxy.Domain)))) |
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fmt.Printf("Setting up file server for port %d at %s\n", proxy.Port, proxy.Domain) |
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default: |
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fmt.Printf("Unknown proxy type: %s\n", proxy.ProxyType) |
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} |
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} |
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} |
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// HTTP 代理处理函数
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func httpProxyHandler(proxy model.LocalProxy) { |
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remote, err := url.Parse(proxy.Domain) |
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if err != nil { |
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fmt.Printf("Failed to parse remote URL for port %d: %v\n", proxy.Port, err) |
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return |
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} |
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reverseProxy := httputil.NewSingleHostReverseProxy(remote) |
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// 启动 HTTP 服务器并监听指定端口
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server := &http.Server{ |
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Addr: fmt.Sprintf(":%d", proxy.Port), |
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Handler: reverseProxy, |
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} |
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fmt.Printf("Starting HTTP proxy on port %d and forwarding to %s:%d\n", proxy.Port, proxy.Domain, proxy.Port) |
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if err := server.ListenAndServe(); err != nil { |
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fmt.Printf("Failed to start HTTP proxy on port %d: %v\n", proxy.Port, err) |
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} |
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} |
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// UDP 代理处理函数
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func udpProxyHandler(proxy model.LocalProxy) { |
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localAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf(":%d", proxy.Port)) |
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if err != nil { |
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fmt.Printf("Failed to resolve local UDP address for port %d: %v\n", proxy.Port, err) |
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return |
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} |
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remoteAddr, err := net.ResolveUDPAddr("udp", proxy.Domain) |
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if err != nil { |
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fmt.Printf("Failed to resolve remote UDP address for port %d: %v\n", proxy.Port, err) |
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return |
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} |
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conn, err := net.ListenUDP("udp", localAddr) |
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if err != nil { |
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fmt.Printf("Failed to listen on UDP port %d: %v\n", proxy.Port, err) |
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return |
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} |
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defer conn.Close() |
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buffer := make([]byte, 1024) |
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for { |
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n, addr, err := conn.ReadFromUDP(buffer) |
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if err != nil { |
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fmt.Printf("Failed to read from UDP: %v\n", err) |
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continue |
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} |
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remoteConn, err := net.DialUDP("udp", nil, remoteAddr) |
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if err != nil { |
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fmt.Printf("Failed to dial remote UDP: %v\n", err) |
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continue |
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} |
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_, err = remoteConn.Write(buffer[:n]) |
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if err != nil { |
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fmt.Printf("Failed to write to remote UDP: %v\n", err) |
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continue |
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} |
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// 读取远程服务器的响应并转发回客户端
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n, err = remoteConn.Read(buffer) |
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if err != nil { |
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fmt.Printf("Failed to read from remote UDP: %v\n", err) |
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continue |
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} |
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_, err = conn.WriteToUDP(buffer[:n], addr) |
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if err != nil { |
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fmt.Printf("Failed to write to client UDP: %v\n", err) |
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continue |
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} |
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} |
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} |
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