63 lines
3.0 KiB
JavaScript
63 lines
3.0 KiB
JavaScript
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"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.encodeContent = exports.decodeContent = void 0;
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const zlib_1 = __importDefault(require("zlib"));
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const promisified_functions_1 = require("../../utils/promisified-functions");
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const iconv_lite_1 = __importDefault(require("iconv-lite"));
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// NOTE: https://github.com/request/request/pull/2492/files
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// Be more lenient with decoding compressed responses, since (very rarely)
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// servers send slightly invalid gzip responses that are still accepted
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// by common browsers.
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// Always using Z_SYNC_FLUSH is what cURL does.
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// GH-1915
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const GZIP_DECODING_OPTIONS = {
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flush: zlib_1.default.Z_SYNC_FLUSH,
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finishFlush: zlib_1.default.Z_SYNC_FLUSH,
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};
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// NOTE: https://github.com/DevExpress/testcafe-hammerhead/issues/2743
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// The default compression level (11) causes the strong performance degradation.
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// This is why, we decrease the compression level same as other frameworks
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// (https://github.com/dotnet/runtime/issues/26097, https://github.com/koajs/compress/issues/121)
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const BROTLI_DECODING_OPTIONS = {
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params: {
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[zlib_1.default.constants.BROTLI_PARAM_QUALITY]: 5,
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},
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};
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// NOTE: IIS has a bug when it sends 'raw deflate' compressed data for the 'Deflate' Accept-Encoding header.
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// (see: http://zoompf.com/2012/02/lose-the-wait-http-compression)
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async function inflateWithFallback(data) {
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try {
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return await (0, promisified_functions_1.inflate)(data);
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}
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catch (err) {
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if (err.code === 'Z_DATA_ERROR')
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return await (0, promisified_functions_1.inflateRaw)(data);
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throw err;
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}
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}
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async function decodeContent(content, encoding, charset) {
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if (encoding === "gzip" /* CONTENT_ENCODING.GZIP */)
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content = await (0, promisified_functions_1.gunzip)(content, GZIP_DECODING_OPTIONS);
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else if (encoding === "deflate" /* CONTENT_ENCODING.DEFLATE */)
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content = await inflateWithFallback(content);
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else if (encoding === "br" /* CONTENT_ENCODING.BROTLI */)
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content = await (0, promisified_functions_1.brotliDecompress)(content, BROTLI_DECODING_OPTIONS);
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charset.fromBOM(content);
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return iconv_lite_1.default.decode(content, charset.get());
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}
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exports.decodeContent = decodeContent;
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async function encodeContent(content, encoding, charset) {
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const encodedContent = iconv_lite_1.default.encode(content, charset.get(), { addBOM: charset.isFromBOM() });
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if (encoding === "gzip" /* CONTENT_ENCODING.GZIP */)
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return (0, promisified_functions_1.gzip)(encodedContent);
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if (encoding === "deflate" /* CONTENT_ENCODING.DEFLATE */)
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return (0, promisified_functions_1.deflate)(encodedContent);
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if (encoding === "br" /* CONTENT_ENCODING.BROTLI */)
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return (0, promisified_functions_1.brotliCompress)(encodedContent, BROTLI_DECODING_OPTIONS);
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return encodedContent;
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}
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exports.encodeContent = encodeContent;
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