Go HTTP(S)代理库, 支持中间人代理解密HTTPS
项目地址
安装 go get github.com/ouqiang/goproxy 使用 package mainimport ( "net/http" "time" "github.com/ouqiang/goproxy")func main() { proxy := goproxy.New() server := &http.Server{ Addr: ":8080", Handler: proxy, ReadTimeout: 1 * time.Minute, WriteTimeout: 1 * time.Minute, } err := server.ListenAndServe() if err != nil { panic(err) }} 代理测试 curl -x localhost:8080 https://www.baidu.com 中间人代理, 解密HTTPS系统需导入根证书 mitm-proxy.crt
package mainimport ( "crypto/tls" "net/http" "sync" "time" "github.com/ouqiang/goproxy")// 实现证书缓存接口type Cache struct { m sync.Map}func (c *Cache) Set(host string, cert *tls.Certificate) { c.m.Store(host, cert)}func (c *Cache) Get(host string) *tls.Certificate { v, ok := c.m.Load(host) if !ok { return nil } return v.(*tls.Certificate)}func main() { proxy := goproxy.New(goproxy.WithDecryptHTTPS(&Cache{})) server := &http.Server{ Addr: ":8080", Handler: proxy, ReadTimeout: 1 * time.Minute, WriteTimeout: 1 * time.Minute, } err := server.ListenAndServe() if err != nil { panic(err) }} 事件处理实现Delegate接口
type Delegate interface { // Connect 收到客户端连接 Connect(ctx *Context, rw http.ResponseWriter) // Auth 代理身份认证 Auth(ctx *Context, rw http.ResponseWriter) // BeforeRequest HTTP请求前 设置X-Forwarded-For, 修改Header、Body BeforeRequest(ctx *Context) // BeforeResponse 响应发送到客户端前, 修改Header、Body、Status Code BeforeResponse(ctx *Context, resp *http.Response, err error) // ParentProxy 上级代理 ParentProxy(*http.Request) (*url.URL, error) // Finish 本次请求结束 Finish(ctx *Context) // 记录错误信息 ErrorLog(err error)} type EventHandler struct{}func (e *EventHandler) Connect(ctx *goproxy.Context, rw http.ResponseWriter) { // 保存的数据可以在后面的回调方法中获取 ctx.Data["req_id"] = "uuid" // 禁止访问某个域名 if strings.Contains(ctx.Req.URL.Host, "example.com") { rw.WriteHeader(http.StatusForbidden) ctx.Abort() return }}func (e *EventHandler) Auth(ctx *goproxy.Context, rw http.ResponseWriter) { // 身份验证}func (e *EventHandler) BeforeRequest(ctx *goproxy.Context) { // 修改header ctx.Req.Header.Add("X-Request-Id", ctx.Data["req_id"].(string)) // 设置X-Forwarded-For if clientIP, _, err := net.SplitHostPort(ctx.Req.RemoteAddr); err == nil { if prior, ok := ctx.Req.Header["X-Forwarded-For"]; ok { clientIP = strings.Join(prior, ", ") + ", " + clientIP } ctx.Req.Header.Set("X-Forwarded-For", clientIP) } // 读取Body body, err := ioutil.ReadAll(ctx.Req.Body) if err != nil { // 错误处理 return } // Request.Body只能读取一次, 读取后必须再放回去 // Response.Body同理 ctx.Req.Body = ioutil.NopCloser(bytes.NewReader(body))}func (e *EventHandler) BeforeResponse(ctx *goproxy.Context, resp *http.Response, err error) { if err != nil { return } // 修改response}// 设置上级代理func (e *EventHandler) ParentProxy(req *http.Request) (*url.URL, error) { return url.Parse("http://localhost:1087")}func (e *EventHandler) Finish(ctx *goproxy.Context) { fmt.Printf("请求结束 URL:%sn", ctx.Req.URL)}// 记录错误日志func (e *EventHandler) ErrorLog(err error) { log.Println(err)}func main() { proxy := goproxy.New(goproxy.WithDelegate(&EventHandler{})) server := &http.Server{ Addr: ":8080", Handler: proxy, ReadTimeout: 1 * time.Minute, WriteTimeout: 1 * time.Minute, } err := server.ListenAndServe() if err != nil { panic(err) }}