src/charging-station/ui-websocket-services/UIServiceUtils.ts

   1 import { Protocol, ProtocolVersion } from '../../types/UIProtocol';
   2
   3 import { IncomingMessage } from 'http';
   4 import Utils from '../../utils/Utils';
   5 import logger from '../../utils/Logger';
   6
   7 export class UIServiceUtils {
   8   public static handleProtocols = (
   9     protocols: Set<string>,
  10     request: IncomingMessage
  11   ): string | false => {
  12     let protocolIndex: number;
  13     let protocol: Protocol;
  14     let version: ProtocolVersion;
  15     for (const fullProtocol of protocols) {
  16       protocolIndex = fullProtocol.indexOf(Protocol.UI);
  17       protocol = fullProtocol.substring(
  18         protocolIndex,
  19         protocolIndex + Protocol.UI.length
  20       ) as Protocol;
  21       version = fullProtocol.substring(protocolIndex + Protocol.UI.length) as ProtocolVersion;
  22       if (
  23         Object.values(Protocol).includes(protocol) &&
  24         Object.values(ProtocolVersion).includes(version)
  25       ) {
  26         return fullProtocol;
  27       }
  28     }
  29     logger.error(
  30       `${Utils.logPrefix(
  31         ' UI WebSocket Server:'
  32       )} Unsupported protocol: ${protocol} or protocol version: ${version}`
  33     );
  34     return false;
  35   };
  36 }