-import type { IncomingMessage } from 'http';
-import type internal from 'stream';
+import type { IncomingMessage } from 'node:http';
+import type { Duplex } from 'node:stream';
import { StatusCodes } from 'http-status-codes';
import WebSocket, { type RawData, WebSocketServer } from 'ws';
-import type { UIServerConfiguration } from '../../types/ConfigurationData';
-import type { ProtocolRequest, ProtocolResponse } from '../../types/UIProtocol';
-import { WebSocketCloseEventStatusCode } from '../../types/WebSocket';
-import logger from '../../utils/Logger';
-import Utils from '../../utils/Utils';
-import { AbstractUIServer } from './AbstractUIServer';
-import { UIServerUtils } from './UIServerUtils';
+import {
+ type ProtocolRequest,
+ type ProtocolResponse,
+ type UIServerConfiguration,
+ WebSocketCloseEventStatusCode,
+} from '../../types';
+import { Constants, Utils, logger } from '../../utils';
+import { AbstractUIServer, UIServerUtils } from '../internal';
const moduleName = 'UIWebSocketServer';
-export default class UIWebSocketServer extends AbstractUIServer {
+export class UIWebSocketServer extends AbstractUIServer {
private readonly webSocketServer: WebSocketServer;
public constructor(protected readonly uiServerConfiguration: UIServerConfiguration) {
}
const [requestId] = request as ProtocolRequest;
this.responseHandlers.set(requestId, ws);
- this.uiServices
- .get(version)
- .requestHandler(request)
- .catch(() => {
- /* Error caught by AbstractUIService */
- });
+ this.uiServices.get(version)?.requestHandler(request).catch(Constants.EMPTY_FUNCTION);
});
ws.on('error', (error) => {
logger.error(`${this.logPrefix(moduleName, 'start.ws.onerror')} WebSocket error:`, error);
);
});
});
- this.httpServer.on(
- 'upgrade',
- (req: IncomingMessage, socket: internal.Duplex, head: Buffer): void => {
- this.authenticate(req, (err) => {
- if (err) {
- socket.write(`HTTP/1.1 ${StatusCodes.UNAUTHORIZED} Unauthorized\r\n\r\n`);
- socket.destroy();
- return;
- }
+ // eslint-disable-next-line @typescript-eslint/no-unused-vars
+ this.httpServer.on('connect', (req: IncomingMessage, socket: Duplex, head: Buffer) => {
+ if (req.headers?.connection !== 'Upgrade' || req.headers?.upgrade !== 'websocket') {
+ socket.write(`HTTP/1.1 ${StatusCodes.BAD_REQUEST} Bad Request\r\n\r\n`);
+ socket.destroy();
+ }
+ });
+ this.httpServer.on('upgrade', (req: IncomingMessage, socket: Duplex, head: Buffer): void => {
+ this.authenticate(req, (err) => {
+ if (err) {
+ socket.write(`HTTP/1.1 ${StatusCodes.UNAUTHORIZED} Unauthorized\r\n\r\n`);
+ socket.destroy();
+ return;
+ }
+ try {
this.webSocketServer.handleUpgrade(req, socket, head, (ws: WebSocket) => {
this.webSocketServer.emit('connection', ws, req);
});
- });
- }
- );
+ } catch (error) {
+ logger.error(
+ `${this.logPrefix(
+ moduleName,
+ 'start.httpServer.on.upgrade'
+ )} Error at handling connection upgrade:`,
+ error
+ );
+ }
+ });
+ });
this.startHttpServer();
}
}
}
- public logPrefix(modName?: string, methodName?: string, prefixSuffix?: string): string {
+ public logPrefix = (modName?: string, methodName?: string, prefixSuffix?: string): string => {
const logMsgPrefix = prefixSuffix
? `UI WebSocket Server ${prefixSuffix}`
: 'UI WebSocket Server';
const logMsg =
- modName && methodName ? ` ${logMsgPrefix} | ${modName}.${methodName}:` : ` ${logMsgPrefix} |`;
+ Utils.isNotEmptyString(modName) && Utils.isNotEmptyString(methodName)
+ ? ` ${logMsgPrefix} | ${modName}.${methodName}:`
+ : ` ${logMsgPrefix} |`;
return Utils.logPrefix(logMsg);
- }
+ };
private broadcastToClients(message: string): void {
for (const client of this.webSocketServer.clients) {