Обмен SDP, создание комнаты, улучшенная организация кода

2026-03-14 15:28:01 +02:00
parent e79282755b
commit ca36a8d818
2 changed files with 177 additions and 10 deletions
--- a/app/providers/ProtocolProvider/protocol/packets/packet.signal.peer.ts
+++ b/app/providers/ProtocolProvider/protocol/packets/packet.signal.peer.ts
@@ -0,0 +1,108 @@
+import Packet from "../packet";
+import Stream from "../stream";
+
+export enum SignalType {
+    CALL = 0,
+    KEY_EXCHANGE = 1,
+    ACTIVE_CALL = 2,
+    END_CALL = 3,
+    CREATE_ROOM = 4
+}
+
+/**
+ * Пакет сигналинга, для сигналов WebRTC используется отдельный пакет 27 PacketWebRTCExchange
+ */
+export class PacketSignalPeer extends Packet {
+
+    private src: string = "";
+    /**
+     * Назначение
+     */
+    private dst: string = "";
+    /**
+     * Используется если SignalType == KEY_EXCHANGE, для идентификации сессии обмена ключами
+     */
+    private sharedPublic: string = "";
+
+    private signalType: SignalType = SignalType.CALL;
+
+    /** 
+     * Используется если SignalType == CREATE_ROOM, 
+     * для идентификации комнаты на SFU сервере, в которой будет происходить обмен сигналами 
+     * WebRTC для установления P2P соединения между участниками звонка
+     */
+    private roomId: string = "";
+
+
+    public getPacketId(): number {
+        return 26;
+    }
+
+    public _receive(stream: Stream): void {
+        this.signalType = stream.readInt8();
+        this.src = stream.readString();
+        this.dst = stream.readString();
+        if(this.signalType == SignalType.KEY_EXCHANGE){
+            this.sharedPublic = stream.readString();
+        }
+        if(this.signalType == SignalType.CREATE_ROOM){
+            this.roomId = stream.readString();
+        }
+    }
+
+    public _send(): Promise<Stream> | Stream {
+        const stream = new Stream();
+        stream.writeInt16(this.getPacketId());
+        stream.writeInt8(this.signalType);
+        stream.writeString(this.src);
+        stream.writeString(this.dst);
+        if(this.signalType == SignalType.KEY_EXCHANGE){
+            stream.writeString(this.sharedPublic);
+        }
+        if(this.signalType == SignalType.CREATE_ROOM){
+            stream.writeString(this.roomId);
+        }
+        return stream;
+    }
+
+    public setDst(dst: string) {
+        this.dst = dst;
+    }
+
+    public setSharedPublic(sharedPublic: string) {
+        this.sharedPublic = sharedPublic;
+    }
+
+    public setSignalType(signalType: SignalType) {
+        this.signalType = signalType;
+    }
+
+    public getDst(): string {
+        return this.dst;
+    }
+
+    public getSharedPublic(): string {
+        return this.sharedPublic;
+    }
+
+    public getSignalType(): SignalType {
+        return this.signalType;
+    }
+
+    public getSrc(): string {
+        return this.src;
+    }
+
+    public setSrc(src: string) {
+        this.src = src;
+    }
+
+    public getRoomId(): string {
+        return this.roomId;
+    }
+    
+    public setRoomId(roomId: string) {
+        this.roomId = roomId;
+    }
+    
+}