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Viewing file:     transport.js (2.96 KB)      -rwxrwxr-x

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Transport = void 0;
const engine_io_parser_1 = require("engine.io-parser");
const component_emitter_1 = require("@socket.io/component-emitter");
const util_js_1 = require("./util.js");
const debug_1 = __importDefault(require("debug")); // debug()
const debug = (0, debug_1.default)("engine.io-client:transport"); // debug()
class Transport extends component_emitter_1.Emitter {
    /**
     * Transport abstract constructor.
     *
     * @param {Object} options.
     * @api private
     */
    constructor(opts) {
        super();
        this.writable = false;
        (0, util_js_1.installTimerFunctions)(this, opts);
        this.opts = opts;
        this.query = opts.query;
        this.readyState = "";
        this.socket = opts.socket;
    }
    /**
     * Emits an error.
     *
     * @param {String} str
     * @return {Transport} for chaining
     * @api protected
     */
    onError(msg, desc) {
        const err = new Error(msg);
        // @ts-ignore
        err.type = "TransportError";
        // @ts-ignore
        err.description = desc;
        super.emit("error", err);
        return this;
    }
    /**
     * Opens the transport.
     *
     * @api public
     */
    open() {
        if ("closed" === this.readyState || "" === this.readyState) {
            this.readyState = "opening";
            this.doOpen();
        }
        return this;
    }
    /**
     * Closes the transport.
     *
     * @api public
     */
    close() {
        if ("opening" === this.readyState || "open" === this.readyState) {
            this.doClose();
            this.onClose();
        }
        return this;
    }
    /**
     * Sends multiple packets.
     *
     * @param {Array} packets
     * @api public
     */
    send(packets) {
        if ("open" === this.readyState) {
            this.write(packets);
        }
        else {
            // this might happen if the transport was silently closed in the beforeunload event handler
            debug("transport is not open, discarding packets");
        }
    }
    /**
     * Called upon open
     *
     * @api protected
     */
    onOpen() {
        this.readyState = "open";
        this.writable = true;
        super.emit("open");
    }
    /**
     * Called with data.
     *
     * @param {String} data
     * @api protected
     */
    onData(data) {
        const packet = (0, engine_io_parser_1.decodePacket)(data, this.socket.binaryType);
        this.onPacket(packet);
    }
    /**
     * Called with a decoded packet.
     *
     * @api protected
     */
    onPacket(packet) {
        super.emit("packet", packet);
    }
    /**
     * Called upon close.
     *
     * @api protected
     */
    onClose() {
        this.readyState = "closed";
        super.emit("close");
    }
}
exports.Transport = Transport;