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httptun

一個簡單的小工具把普通TCP連線偽裝成HTTP請求 伺服器端包含一個簡單的web/file伺服器 對一般瀏覽器而言, 伺服器端只是個網站 建議使用長連線(Multiplexing/VPN之類)以減少overhead

注意: 伺服器跟客戶端之間沒有任何加密

請先用TLS或類似的東西加密完, 再通過這個工具

已支援HTTPS/TLS連線

overhead

  • 初始化: 3個HTTP請求
    • ws模式: 2個HTTP請求
  • 資料傳輸: 2個tcp連線
    • ws模式: 1個tcp連線

Usage

Client: ./httptun-client -t "HTTPTUN_SERVER_IP:4040" -p ":5005"
Server: ./httptun-server -t "TARGET_IP:5005" -p ":4040"

以上指令會對8388/tcp做轉發(port forwarding):

Application -> httptun Client(5005/tcp) -> httptun Server(4040/http) -> Target Server(5005/tcp)

原始連線如下:

Application -> Target Server(5005/tcp)

Code Usage

server side:

	// simple http Handler setup
	fileHandler := http.FileServer(http.Dir(*dir))
	//http.Handle("/", fileHandler) // do not add to http.DefaultServeMux now
	http.HandleFunc("/hello", func(w http.ResponseWriter, r *http.Request) { // other Handler
		io.WriteString(w, "Hello, world!\n")
	})

	websrv := fakehttp.NewHandle(fileHandler) // bind handler
	websrv.UseWs = true
	websrv.OnlyWs = false
	http.Handle("/", websrv) // now add to http.DefaultServeMux

	// start http server
	http.ListenAndServe(":8080", nil)