- private openWSConnection(
- options: WsOptions = this.stationInfo?.wsOptions ?? {},
- params: { closeOpened?: boolean; terminateOpened?: boolean } = {
- closeOpened: false,
- terminateOpened: false,
- }
- ): void {
- options.handshakeTimeout = options?.handshakeTimeout ?? this.getConnectionTimeout() * 1000;
- params.closeOpened = params?.closeOpened ?? false;
- params.terminateOpened = params?.terminateOpened ?? false;
- if (
- !Utils.isNullOrUndefined(this.stationInfo.supervisionUser) &&
- !Utils.isNullOrUndefined(this.stationInfo.supervisionPassword)
- ) {
- options.auth = `${this.stationInfo.supervisionUser}:${this.stationInfo.supervisionPassword}`;
- }
- if (params?.closeOpened) {
- this.closeWSConnection();
- }
- if (params?.terminateOpened) {
- this.terminateWSConnection();
- }
- let protocol: string;
- switch (this.getOcppVersion()) {
- case OCPPVersion.VERSION_16:
- protocol = 'ocpp' + OCPPVersion.VERSION_16;
- break;
- default:
- this.handleUnsupportedVersion(this.getOcppVersion());
- break;
- }
-
- logger.info(
- this.logPrefix() + ' Open OCPP connection to URL ' + this.wsConnectionUrl.toString()
- );
-
- this.wsConnection = new WebSocket(this.wsConnectionUrl, protocol, options);
-
- // Handle WebSocket message
- this.wsConnection.on(
- 'message',
- this.onMessage.bind(this) as (this: WebSocket, data: RawData, isBinary: boolean) => void
- );
- // Handle WebSocket error
- this.wsConnection.on(
- 'error',
- this.onError.bind(this) as (this: WebSocket, error: Error) => void
- );
- // Handle WebSocket close
- this.wsConnection.on(
- 'close',
- this.onClose.bind(this) as (this: WebSocket, code: number, reason: Buffer) => void
- );
- // Handle WebSocket open
- this.wsConnection.on('open', this.onOpen.bind(this) as (this: WebSocket) => void);
- // Handle WebSocket ping
- this.wsConnection.on('ping', this.onPing.bind(this) as (this: WebSocket, data: Buffer) => void);
- // Handle WebSocket pong
- this.wsConnection.on('pong', this.onPong.bind(this) as (this: WebSocket, data: Buffer) => void);
- }
-
- private closeWSConnection(): void {
- if (this.isWebSocketConnectionOpened()) {
- this.wsConnection.close();
- this.wsConnection = null;
- }
- }
-