Обработка Offers от сервера

boot/boot.go

@@ -27,10 +27,12 @@ func Bootstrap() {
 		port = "1001"
 	}
 	sfu.OnLocalICECandidate = OnLocalICECandidate
+	sfu.OnServerOffer = OnServerOffer
 	logger.LogInfoMessage("server started at x.x.x.x:" + port)
 	http.ListenAndServe(":"+port, nil)
 }
 
+// Коллбек для обработки новых ICE кандидатов от сервера к пиру
 func OnLocalICECandidate(roomID string, peerID string, candidate webrtc.ICECandidateInit) {
 	room, exists := sfu.GetRoom(roomID)
 	if !exists {
@@ -52,6 +54,24 @@ func OnLocalICECandidate(roomID string, peerID string, candidate webrtc.ICECandi
 	room.Server.Socket.WriteMessage(websocket.BinaryMessage, buffer.Bytes())
 }
 
+// Обработка нового оффера от сервера для конкретного пира (при renegotiation)
 func OnServerOffer(roomID string, peerID string, offer webrtc.SessionDescription) {
-	logger.LogInfoMessage("new server offer for peer " + peerID + " in room " + roomID)
+	room, exists := sfu.GetRoom(roomID)
+	if !exists {
+		logger.LogWarnMessage("tried to send server offer to non existing room " + roomID)
+		return
+	}
+	jsonOffer, _ := json.Marshal(offer)
+	buffer := bytebuffer.Allocate(
+		1 + 4 + len([]byte(roomID)) + 4 + len([]byte(peerID)) + 4 + len(jsonOffer),
+	)
+	buffer.Put(0x08)
+	buffer.PutUint32(uint32(len([]byte(roomID))))
+	buffer.PutBytes([]byte(roomID))
+	buffer.PutUint32(uint32(len([]byte(peerID))))
+	buffer.PutBytes([]byte(peerID))
+	buffer.PutUint32(uint32(len([]byte(jsonOffer))))
+	buffer.PutBytes([]byte(jsonOffer))
+	buffer.Flip()
+	room.Server.Socket.WriteMessage(websocket.BinaryMessage, buffer.Bytes())
 }

socket/socket.go

@@ -157,5 +157,51 @@ func processData(data <-chan []byte, connection *connection.Connection) {
 			connection.Socket.WriteMessage(websocket.BinaryMessage, response.Bytes())
 			continue
 		}
+
+		//ICE-candidate пришел от участника комнаты
+		if packetId == 0x06 {
+			roomIdLen, _ := buffer.GetUint32()
+			roomIDBytes, _ := buffer.GetBytes(int(roomIdLen))
+			roomID := string(roomIDBytes)
+			peerIdLen, _ := buffer.GetUint32()
+			peerIDBytes, _ := buffer.GetBytes(int(peerIdLen))
+			peerID := string(peerIDBytes)
+			candidateLength, _ := buffer.GetUint32()
+			candidateBytes, _ := buffer.GetBytes(int(candidateLength))
+			var candidate webrtc.ICECandidateInit
+			err := json.Unmarshal(candidateBytes, &candidate)
+			if err != nil {
+				logger.LogWarnMessage("failed to unmarshal ICE candidate from peer " + peerID + " in room " + roomID + ": " + err.Error())
+				continue
+			}
+			err = sfu.AddICECandidate(roomID, peerID, candidate)
+			if err != nil {
+				logger.LogWarnMessage("failed to add ICE candidate from peer " + peerID + " in room " + roomID + ": " + err.Error())
+				continue
+			}
+		}
+
+		// SDP ANSWER от клиента при renegotiation
+		if packetId == 0x07 {
+			roomIdLen, _ := buffer.GetUint32()
+			roomIDBytes, _ := buffer.GetBytes(int(roomIdLen))
+			roomID := string(roomIDBytes)
+			peerIdLen, _ := buffer.GetUint32()
+			peerIDBytes, _ := buffer.GetBytes(int(peerIdLen))
+			peerID := string(peerIDBytes)
+			answerLength, _ := buffer.GetUint32()
+			answerBytes, _ := buffer.GetBytes(int(answerLength))
+			var answer webrtc.SessionDescription
+			err := json.Unmarshal(answerBytes, &answer)
+			if err != nil {
+				logger.LogWarnMessage("failed to unmarshal answer from peer " + peerID + " in room " + roomID + ": " + err.Error())
+				continue
+			}
+			err = sfu.HandleClientAnswer(roomID, peerID, answer)
+			if err != nil {
+				logger.LogWarnMessage("failed to handle client answer from peer " + peerID + " in room " + roomID + ": " + err.Error())
+				continue
+			}
+		}
 	}
 }