+ const handleSendError = (ocppError: OCPPError): void => {
+ if (params.skipBufferingOnError === false) {
+ // Buffer
+ chargingStation.bufferMessage(messageToSend)
+ if (messageType === MessageType.CALL_MESSAGE) {
+ this.setCachedRequest(
+ chargingStation,
+ messageId,
+ messagePayload as JsonType,
+ commandName,
+ responseCallback,
+ errorCallback
+ )
+ }
+ } else if (
+ params.skipBufferingOnError === true &&
+ messageType === MessageType.CALL_MESSAGE
+ ) {
+ // Remove request from the cache
+ chargingStation.requests.delete(messageId)
+ }
+ reject(ocppError)
+ }
+
+ if (chargingStation.stationInfo?.enableStatistics === true) {
+ chargingStation.performanceStatistics?.addRequestStatistic(commandName, messageType)
+ }
+ const messageToSend = this.buildMessageToSend(
+ chargingStation,
+ messageId,
+ messagePayload,
+ messageType,
+ commandName
+ )
+ // Check if wsConnection opened
+ if (chargingStation.isWebSocketConnectionOpened()) {
+ const beginId = PerformanceStatistics.beginMeasure(commandName)
+ const sendTimeout = setTimeout(() => {
+ handleSendError(
+ new OCPPError(
+ ErrorType.GENERIC_ERROR,
+ `Timeout ${formatDurationMilliSeconds(
+ OCPPConstants.OCPP_WEBSOCKET_TIMEOUT
+ )} reached for ${
+ params.skipBufferingOnError === false ? '' : 'non '
+ }buffered message id '${messageId}' with content '${messageToSend}'`,
+ commandName,
+ (messagePayload as OCPPError).details
+ )
+ )
+ }, OCPPConstants.OCPP_WEBSOCKET_TIMEOUT)
+ chargingStation.wsConnection?.send(messageToSend, (error?: Error) => {
+ PerformanceStatistics.endMeasure(commandName, beginId)
+ clearTimeout(sendTimeout)
+ if (error == null) {
+ logger.debug(
+ `${chargingStation.logPrefix()} >> Command '${commandName}' sent ${OCPPServiceUtils.getMessageTypeString(
+ messageType
+ )} payload: ${messageToSend}`
+ )
+ if (messageType === MessageType.CALL_MESSAGE) {
+ this.setCachedRequest(
+ chargingStation,
+ messageId,
+ messagePayload as JsonType,
+ commandName,
+ responseCallback,
+ errorCallback
+ )
+ } else {
+ // Resolve response
+ resolve(messagePayload)
+ }
+ } else {
+ handleSendError(
+ new OCPPError(
+ ErrorType.GENERIC_ERROR,
+ `WebSocket errored for ${
+ params.skipBufferingOnError === false ? '' : 'non '
+ }buffered message id '${messageId}' with content '${messageToSend}'`,
+ commandName,
+ { name: error.name, message: error.message, stack: error.stack }
+ )
+ )
+ }
+ })
+ } else {
+ handleSendError(
+ new OCPPError(
+ ErrorType.GENERIC_ERROR,
+ `WebSocket closed for ${
+ params.skipBufferingOnError === false ? '' : 'non '
+ }buffered message id '${messageId}' with content '${messageToSend}'`,
+ commandName,
+ (messagePayload as OCPPError).details
+ )
+ )
+ }
+ })
+ }
+ throw new OCPPError(
+ ErrorType.SECURITY_ERROR,
+ `Cannot send command ${commandName} PDU when the charging station is in ${chargingStation.bootNotificationResponse?.status} state on the central server`,
+ commandName
+ )