Add event listener support to client

src/Client.ts

@@ -201,6 +201,10 @@ export class Client implements SmppSession {
 		this.setStatus(ClientStatus.BOUND);
 	}
 
+	on(event: string, callback: (...args: any[]) => void): void {
+		this.eventEmitter.on(event, callback);
+	}
+
 	private connectSession(): void {
 		if (!this.fieldsAreOk()) {
 			return;

src/SmppSession.ts

@@ -4,7 +4,7 @@ export interface SmppSession {
 	username: string,
 	password: string,
 
-	sendPdu(pdu: object): Promise<object>;
+	sendPdu(pdu: object, force?: boolean): Promise<object>;
 
 	sendSingle(job: Job): Promise<object>;
 

src/main.ts

@@ -32,7 +32,9 @@ client.connectAndBind().then(() => {
 		source_addr: "1234567890",
 		destination_addr: "1234567890",
 		short_message: "Hello World"
-	}), 100, 100))
+	}), 100, 100));
+
+	client.on(Client.ClientEvents.ANY_PDU, (pdu: any) => console.log(pdu));
 });
 
 // class ClientSession {