sinch-rtc/npm/src/ocra/GzipEncodingMiddleware.js

RTC JavaScript/Web SDK

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.GzipEncodingMiddleware = void 0;
const pako = require("pako");
class GzipEncodingMiddleware {
    constructor() {
        this.pre = (context) => __awaiter(this, void 0, void 0, function* () {
            if (!context.init.body) {
                return;
            }
            let bodyString;
            if (typeof context.init.body === GzipEncodingMiddleware.TYPE_OBJECT) {
                bodyString = JSON.stringify(context.init.body);
            }
            else if (typeof context.init.body === GzipEncodingMiddleware.TYPE_STRING) {
                bodyString = context.init.body;
            }
            else {
                console.warn("Unsupported request body type for Gzip compression");
                return;
            }
            const compressedBody = pako.gzip(bodyString);
            if (context.init.headers) {
                context.init.headers[GzipEncodingMiddleware.CONTENT_ENCODING_HEADER] = GzipEncodingMiddleware.CONTENT_ENCODING_GZIP;
            }
            context.init.body = compressedBody;
        });
    }
}
exports.GzipEncodingMiddleware = GzipEncodingMiddleware;
GzipEncodingMiddleware.CONTENT_ENCODING_HEADER = "Content-Encoding";
GzipEncodingMiddleware.CONTENT_ENCODING_GZIP = "gzip";
GzipEncodingMiddleware.TYPE_OBJECT = "object";
GzipEncodingMiddleware.TYPE_STRING = "string";
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