Updated the files.

my-app/node_modules/engine.io/build/transports-uws/index.d.ts

@@ -0,0 +1,7 @@
+import { Polling } from "./polling";
+import { WebSocket } from "./websocket";
+declare const _default: {
+    polling: typeof Polling;
+    websocket: typeof WebSocket;
+};
+export default _default;

my-app/node_modules/engine.io/build/transports-uws/index.js

@@ -0,0 +1,8 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const polling_1 = require("./polling");
+const websocket_1 = require("./websocket");
+exports.default = {
+    polling: polling_1.Polling,
+    websocket: websocket_1.WebSocket,
+};

my-app/node_modules/engine.io/build/transports-uws/polling.d.ts

@@ -0,0 +1,103 @@
+import { Transport } from "../transport";
+export declare class Polling extends Transport {
+    maxHttpBufferSize: number;
+    httpCompression: any;
+    private res;
+    private dataReq;
+    private dataRes;
+    private shouldClose;
+    private readonly closeTimeout;
+    /**
+     * HTTP polling constructor.
+     *
+     * @api public.
+     */
+    constructor(req: any);
+    /**
+     * Transport name
+     *
+     * @api public
+     */
+    get name(): string;
+    get supportsFraming(): boolean;
+    /**
+     * Overrides onRequest.
+     *
+     * @param req
+     *
+     * @api private
+     */
+    onRequest(req: any): void;
+    /**
+     * The client sends a request awaiting for us to send data.
+     *
+     * @api private
+     */
+    onPollRequest(req: any, res: any): void;
+    /**
+     * The client sends a request with data.
+     *
+     * @api private
+     */
+    onDataRequest(req: any, res: any): void;
+    /**
+     * Cleanup request.
+     *
+     * @api private
+     */
+    private onDataRequestCleanup;
+    /**
+     * Processes the incoming data payload.
+     *
+     * @param {String} encoded payload
+     * @api private
+     */
+    onData(data: any): void;
+    /**
+     * Overrides onClose.
+     *
+     * @api private
+     */
+    onClose(): void;
+    /**
+     * Writes a packet payload.
+     *
+     * @param {Object} packet
+     * @api private
+     */
+    send(packets: any): void;
+    /**
+     * Writes data as response to poll request.
+     *
+     * @param {String} data
+     * @param {Object} options
+     * @api private
+     */
+    write(data: any, options: any): void;
+    /**
+     * Performs the write.
+     *
+     * @api private
+     */
+    doWrite(data: any, options: any, callback: any): void;
+    /**
+     * Compresses data.
+     *
+     * @api private
+     */
+    compress(data: any, encoding: any, callback: any): void;
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+    doClose(fn: any): void;
+    /**
+     * Returns headers for a response.
+     *
+     * @param req - request
+     * @param {Object} extra headers
+     * @api private
+     */
+    headers(req: any, headers: any): any;
+}

my-app/node_modules/engine.io/build/transports-uws/polling.js

@@ -0,0 +1,370 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Polling = void 0;
+const transport_1 = require("../transport");
+const zlib_1 = require("zlib");
+const accepts = require("accepts");
+const debug_1 = require("debug");
+const debug = (0, debug_1.default)("engine:polling");
+const compressionMethods = {
+    gzip: zlib_1.createGzip,
+    deflate: zlib_1.createDeflate,
+};
+class Polling extends transport_1.Transport {
+    /**
+     * HTTP polling constructor.
+     *
+     * @api public.
+     */
+    constructor(req) {
+        super(req);
+        this.closeTimeout = 30 * 1000;
+    }
+    /**
+     * Transport name
+     *
+     * @api public
+     */
+    get name() {
+        return "polling";
+    }
+    get supportsFraming() {
+        return false;
+    }
+    /**
+     * Overrides onRequest.
+     *
+     * @param req
+     *
+     * @api private
+     */
+    onRequest(req) {
+        const res = req.res;
+        // remove the reference to the ServerResponse object (as the first request of the session is kept in memory by default)
+        req.res = null;
+        if (req.getMethod() === "get") {
+            this.onPollRequest(req, res);
+        }
+        else if (req.getMethod() === "post") {
+            this.onDataRequest(req, res);
+        }
+        else {
+            res.writeStatus("500 Internal Server Error");
+            res.end();
+        }
+    }
+    /**
+     * The client sends a request awaiting for us to send data.
+     *
+     * @api private
+     */
+    onPollRequest(req, res) {
+        if (this.req) {
+            debug("request overlap");
+            // assert: this.res, '.req and .res should be (un)set together'
+            this.onError("overlap from client");
+            res.writeStatus("500 Internal Server Error");
+            res.end();
+            return;
+        }
+        debug("setting request");
+        this.req = req;
+        this.res = res;
+        const onClose = () => {
+            this.writable = false;
+            this.onError("poll connection closed prematurely");
+        };
+        const cleanup = () => {
+            this.req = this.res = null;
+        };
+        req.cleanup = cleanup;
+        res.onAborted(onClose);
+        this.writable = true;
+        this.emit("drain");
+        // if we're still writable but had a pending close, trigger an empty send
+        if (this.writable && this.shouldClose) {
+            debug("triggering empty send to append close packet");
+            this.send([{ type: "noop" }]);
+        }
+    }
+    /**
+     * The client sends a request with data.
+     *
+     * @api private
+     */
+    onDataRequest(req, res) {
+        if (this.dataReq) {
+            // assert: this.dataRes, '.dataReq and .dataRes should be (un)set together'
+            this.onError("data request overlap from client");
+            res.writeStatus("500 Internal Server Error");
+            res.end();
+            return;
+        }
+        const expectedContentLength = Number(req.headers["content-length"]);
+        if (!expectedContentLength) {
+            this.onError("content-length header required");
+            res.writeStatus("411 Length Required").end();
+            return;
+        }
+        if (expectedContentLength > this.maxHttpBufferSize) {
+            this.onError("payload too large");
+            res.writeStatus("413 Payload Too Large").end();
+            return;
+        }
+        const isBinary = "application/octet-stream" === req.headers["content-type"];
+        if (isBinary && this.protocol === 4) {
+            return this.onError("invalid content");
+        }
+        this.dataReq = req;
+        this.dataRes = res;
+        let buffer;
+        let offset = 0;
+        const headers = {
+            // text/html is required instead of text/plain to avoid an
+            // unwanted download dialog on certain user-agents (GH-43)
+            "Content-Type": "text/html",
+        };
+        this.headers(req, headers);
+        for (let key in headers) {
+            res.writeHeader(key, String(headers[key]));
+        }
+        const onEnd = (buffer) => {
+            this.onData(buffer.toString());
+            this.onDataRequestCleanup();
+            res.cork(() => {
+                res.end("ok");
+            });
+        };
+        res.onAborted(() => {
+            this.onDataRequestCleanup();
+            this.onError("data request connection closed prematurely");
+        });
+        res.onData((arrayBuffer, isLast) => {
+            const totalLength = offset + arrayBuffer.byteLength;
+            if (totalLength > expectedContentLength) {
+                this.onError("content-length mismatch");
+                res.close(); // calls onAborted
+                return;
+            }
+            if (!buffer) {
+                if (isLast) {
+                    onEnd(Buffer.from(arrayBuffer));
+                    return;
+                }
+                buffer = Buffer.allocUnsafe(expectedContentLength);
+            }
+            Buffer.from(arrayBuffer).copy(buffer, offset);
+            if (isLast) {
+                if (totalLength != expectedContentLength) {
+                    this.onError("content-length mismatch");
+                    res.writeStatus("400 Content-Length Mismatch").end();
+                    this.onDataRequestCleanup();
+                    return;
+                }
+                onEnd(buffer);
+                return;
+            }
+            offset = totalLength;
+        });
+    }
+    /**
+     * Cleanup request.
+     *
+     * @api private
+     */
+    onDataRequestCleanup() {
+        this.dataReq = this.dataRes = null;
+    }
+    /**
+     * Processes the incoming data payload.
+     *
+     * @param {String} encoded payload
+     * @api private
+     */
+    onData(data) {
+        debug('received "%s"', data);
+        const callback = (packet) => {
+            if ("close" === packet.type) {
+                debug("got xhr close packet");
+                this.onClose();
+                return false;
+            }
+            this.onPacket(packet);
+        };
+        if (this.protocol === 3) {
+            this.parser.decodePayload(data, callback);
+        }
+        else {
+            this.parser.decodePayload(data).forEach(callback);
+        }
+    }
+    /**
+     * Overrides onClose.
+     *
+     * @api private
+     */
+    onClose() {
+        if (this.writable) {
+            // close pending poll request
+            this.send([{ type: "noop" }]);
+        }
+        super.onClose();
+    }
+    /**
+     * Writes a packet payload.
+     *
+     * @param {Object} packet
+     * @api private
+     */
+    send(packets) {
+        this.writable = false;
+        if (this.shouldClose) {
+            debug("appending close packet to payload");
+            packets.push({ type: "close" });
+            this.shouldClose();
+            this.shouldClose = null;
+        }
+        const doWrite = (data) => {
+            const compress = packets.some((packet) => {
+                return packet.options && packet.options.compress;
+            });
+            this.write(data, { compress });
+        };
+        if (this.protocol === 3) {
+            this.parser.encodePayload(packets, this.supportsBinary, doWrite);
+        }
+        else {
+            this.parser.encodePayload(packets, doWrite);
+        }
+    }
+    /**
+     * Writes data as response to poll request.
+     *
+     * @param {String} data
+     * @param {Object} options
+     * @api private
+     */
+    write(data, options) {
+        debug('writing "%s"', data);
+        this.doWrite(data, options, () => {
+            this.req.cleanup();
+        });
+    }
+    /**
+     * Performs the write.
+     *
+     * @api private
+     */
+    doWrite(data, options, callback) {
+        // explicit UTF-8 is required for pages not served under utf
+        const isString = typeof data === "string";
+        const contentType = isString
+            ? "text/plain; charset=UTF-8"
+            : "application/octet-stream";
+        const headers = {
+            "Content-Type": contentType,
+        };
+        const respond = (data) => {
+            this.headers(this.req, headers);
+            this.res.cork(() => {
+                Object.keys(headers).forEach((key) => {
+                    this.res.writeHeader(key, String(headers[key]));
+                });
+                this.res.end(data);
+            });
+            callback();
+        };
+        if (!this.httpCompression || !options.compress) {
+            respond(data);
+            return;
+        }
+        const len = isString ? Buffer.byteLength(data) : data.length;
+        if (len < this.httpCompression.threshold) {
+            respond(data);
+            return;
+        }
+        const encoding = accepts(this.req).encodings(["gzip", "deflate"]);
+        if (!encoding) {
+            respond(data);
+            return;
+        }
+        this.compress(data, encoding, (err, data) => {
+            if (err) {
+                this.res.writeStatus("500 Internal Server Error");
+                this.res.end();
+                callback(err);
+                return;
+            }
+            headers["Content-Encoding"] = encoding;
+            respond(data);
+        });
+    }
+    /**
+     * Compresses data.
+     *
+     * @api private
+     */
+    compress(data, encoding, callback) {
+        debug("compressing");
+        const buffers = [];
+        let nread = 0;
+        compressionMethods[encoding](this.httpCompression)
+            .on("error", callback)
+            .on("data", function (chunk) {
+            buffers.push(chunk);
+            nread += chunk.length;
+        })
+            .on("end", function () {
+            callback(null, Buffer.concat(buffers, nread));
+        })
+            .end(data);
+    }
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+    doClose(fn) {
+        debug("closing");
+        let closeTimeoutTimer;
+        const onClose = () => {
+            clearTimeout(closeTimeoutTimer);
+            fn();
+            this.onClose();
+        };
+        if (this.writable) {
+            debug("transport writable - closing right away");
+            this.send([{ type: "close" }]);
+            onClose();
+        }
+        else if (this.discarded) {
+            debug("transport discarded - closing right away");
+            onClose();
+        }
+        else {
+            debug("transport not writable - buffering orderly close");
+            this.shouldClose = onClose;
+            closeTimeoutTimer = setTimeout(onClose, this.closeTimeout);
+        }
+    }
+    /**
+     * Returns headers for a response.
+     *
+     * @param req - request
+     * @param {Object} extra headers
+     * @api private
+     */
+    headers(req, headers) {
+        headers = headers || {};
+        // prevent XSS warnings on IE
+        // https://github.com/LearnBoost/socket.io/pull/1333
+        const ua = req.headers["user-agent"];
+        if (ua && (~ua.indexOf(";MSIE") || ~ua.indexOf("Trident/"))) {
+            headers["X-XSS-Protection"] = "0";
+        }
+        headers["cache-control"] = "no-store";
+        this.emit("headers", headers, req);
+        return headers;
+    }
+}
+exports.Polling = Polling;

my-app/node_modules/engine.io/build/transports-uws/websocket.d.ts

@@ -0,0 +1,43 @@
+import { Transport } from "../transport";
+export declare class WebSocket extends Transport {
+    protected perMessageDeflate: any;
+    private socket;
+    /**
+     * WebSocket transport
+     *
+     * @param req
+     * @api public
+     */
+    constructor(req: any);
+    /**
+     * Transport name
+     *
+     * @api public
+     */
+    get name(): string;
+    /**
+     * Advertise upgrade support.
+     *
+     * @api public
+     */
+    get handlesUpgrades(): boolean;
+    /**
+     * Advertise framing support.
+     *
+     * @api public
+     */
+    get supportsFraming(): boolean;
+    /**
+     * Writes a packet payload.
+     *
+     * @param {Array} packets
+     * @api private
+     */
+    send(packets: any): void;
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+    doClose(fn: any): void;
+}

my-app/node_modules/engine.io/build/transports-uws/websocket.js

@@ -0,0 +1,85 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WebSocket = void 0;
+const transport_1 = require("../transport");
+const debug_1 = require("debug");
+const debug = (0, debug_1.default)("engine:ws");
+class WebSocket extends transport_1.Transport {
+    /**
+     * WebSocket transport
+     *
+     * @param req
+     * @api public
+     */
+    constructor(req) {
+        super(req);
+        this.writable = false;
+        this.perMessageDeflate = null;
+    }
+    /**
+     * Transport name
+     *
+     * @api public
+     */
+    get name() {
+        return "websocket";
+    }
+    /**
+     * Advertise upgrade support.
+     *
+     * @api public
+     */
+    get handlesUpgrades() {
+        return true;
+    }
+    /**
+     * Advertise framing support.
+     *
+     * @api public
+     */
+    get supportsFraming() {
+        return true;
+    }
+    /**
+     * Writes a packet payload.
+     *
+     * @param {Array} packets
+     * @api private
+     */
+    send(packets) {
+        this.writable = false;
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const isLast = i + 1 === packets.length;
+            const send = (data) => {
+                const isBinary = typeof data !== "string";
+                const compress = this.perMessageDeflate &&
+                    Buffer.byteLength(data) > this.perMessageDeflate.threshold;
+                debug('writing "%s"', data);
+                this.socket.send(data, isBinary, compress);
+                if (isLast) {
+                    this.writable = true;
+                    this.emit("drain");
+                }
+            };
+            if (packet.options && typeof packet.options.wsPreEncoded === "string") {
+                send(packet.options.wsPreEncoded);
+            }
+            else {
+                this.parser.encodePacket(packet, this.supportsBinary, send);
+            }
+        }
+    }
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+    doClose(fn) {
+        debug("closing");
+        fn && fn();
+        // call fn first since socket.end() immediately emits a "close" event
+        this.socket.end();
+    }
+}
+exports.WebSocket = WebSocket;