Обмен ключами шифрования DH

app/providers/ProtocolProvider/protocol/packets/packet.signal.ts

@@ -0,0 +1,83 @@
+import Packet from "../packet";
+import Stream from "../stream";
+
+export enum SignalType {
+    CALL = 1,
+    KEY_EXCHANGE = 2,
+    ACTIVE_CALL = 3,
+    END_CALL = 4
+}
+
+export class PacketSignal 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;
+
+
+    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();
+        }
+    }
+
+    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);
+        }
+        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;
+    }
+    
+}

app/providers/ProtocolProvider/protocol/protocol.ts

@@ -25,6 +25,7 @@ import { PacketDeviceNew } from "./packets/packet.device.new";
 import { PacketDeviceList } from "./packets/packet.device.list";
 import { PacketDeviceResolve } from "./packets/packet.device.resolve";
 import { PacketSync } from "./packets/packet.sync";
+import { PacketSignal } from "./packets/packet.signal";
 
 export default class Protocol extends EventEmitter {
     private serverAddress: string;
@@ -125,6 +126,7 @@ export default class Protocol extends EventEmitter {
         this._supportedPackets.set(0x17, new PacketDeviceList());
         this._supportedPackets.set(0x18, new PacketDeviceResolve());
         this._supportedPackets.set(25, new PacketSync());
+        this._supportedPackets.set(26, new PacketSignal());
     }
 
     private _findWaiters(packetId: number): ((packet: Packet) => void)[] {