From 2b876382ff8c4e63b77505a685b8b51a65188188 Mon Sep 17 00:00:00 2001
From: damir <damirwork4@gmail.com>
Date: Sat, 4 Apr 2026 14:52:04 +0000
Subject: [PATCH] Update main.go

---
 main.go | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 65 insertions(+), 6 deletions(-)

diff --git a/main.go b/main.go
index 593ba19..536b67a 100644
--- a/main.go
+++ b/main.go
@@ -1,20 +1,79 @@
 package main
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/http"
-	"time"
+	"sync"
+
+	"github.com/pion/webrtc/v3"
 )
 
 func main() {
+	// Статический HTML фронтенд
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprintf(w, "Hello from Dockerized Go App!")
+		http.ServeFile(w, r, "index.html")
 	})
 
-	http.HandleFunc("/time", func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprintf(w, "Current time: %s", time.Now().Format(time.RFC1123))
-	})
+	// Сигналлинг: прием Offer и возврат Answer
+	http.HandleFunc("/sdp", handleSignaling)
 
-	fmt.Println("Server starting on :8080...")
+	fmt.Println("Server starting on :8080 at auth.shaiheprjct.ru")
 	http.ListenAndServe(":8080", nil)
+}
+
+func handleSignaling(w http.ResponseWriter, r *http.Request) {
+	var offer webrtc.SessionDescription
+	if err := json.NewDecoder(r.Body).Decode(&offer); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	config := webrtc.Configuration{
+		ICEServers: []webrtc.ICEServer{
+			{URLs: []string{"stun:stun.l.google.com:19302"}},
+		},
+	}
+
+	peerConnection, err := webrtc.NewPeerConnection(config)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// Обработка входящего DataChannel
+	peerConnection.OnDataChannel(func(d *webrtc.DataChannel) {
+		fmt.Printf("New DataChannel %s %d\n", d.Label(), d.ID())
+
+		d.OnOpen(func() {
+			fmt.Printf("Data channel '%s' open\n", d.Label())
+		})
+
+		d.OnMessage(func(msg webrtc.DataChannelMessage) {
+			fmt.Printf("Message from DataChannel '%s': %s\n", d.Label(), string(msg.Data))
+			// Эхо-ответ (имитация UDP ответа)
+			d.SendText("Echo: " + string(msg.Data))
+		})
+	})
+
+	// Установка удаленного описания (Offer)
+	err = peerConnection.SetRemoteDescription(offer)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// Создание Answer
+	answer, err := peerConnection.CreateAnswer(nil)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// Сбор ICE кандидатов (упрощенно: ждем завершения сбора перед отправкой Answer)
+	gatherComplete := webrtc.GatheringCompletePromise(peerConnection)
+	peerConnection.SetLocalDescription(answer)
+	<-gatherComplete
+
+	json.NewEncoder(w).Encode(peerConnection.LocalDescription())
 }
\ No newline at end of file