101 lines
3.8 KiB
JavaScript
101 lines
3.8 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.parseProxyResponse = void 0;
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const debug_1 = __importDefault(require("debug"));
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const debug = (0, debug_1.default)('https-proxy-agent:parse-proxy-response');
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function parseProxyResponse(socket) {
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return new Promise((resolve, reject) => {
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// we need to buffer any HTTP traffic that happens with the proxy before we get
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// the CONNECT response, so that if the response is anything other than an "200"
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// response code, then we can re-play the "data" events on the socket once the
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// HTTP parser is hooked up...
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let buffersLength = 0;
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const buffers = [];
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function read() {
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const b = socket.read();
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if (b)
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ondata(b);
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else
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socket.once('readable', read);
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}
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function cleanup() {
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socket.removeListener('end', onend);
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socket.removeListener('error', onerror);
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socket.removeListener('readable', read);
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}
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function onend() {
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cleanup();
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debug('onend');
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reject(new Error('Proxy connection ended before receiving CONNECT response'));
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}
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function onerror(err) {
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cleanup();
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debug('onerror %o', err);
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reject(err);
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}
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function ondata(b) {
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buffers.push(b);
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buffersLength += b.length;
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const buffered = Buffer.concat(buffers, buffersLength);
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const endOfHeaders = buffered.indexOf('\r\n\r\n');
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if (endOfHeaders === -1) {
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// keep buffering
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debug('have not received end of HTTP headers yet...');
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read();
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return;
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}
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const headerParts = buffered
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.slice(0, endOfHeaders)
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.toString('ascii')
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.split('\r\n');
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const firstLine = headerParts.shift();
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if (!firstLine) {
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socket.destroy();
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return reject(new Error('No header received from proxy CONNECT response'));
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}
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const firstLineParts = firstLine.split(' ');
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const statusCode = +firstLineParts[1];
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const statusText = firstLineParts.slice(2).join(' ');
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const headers = {};
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for (const header of headerParts) {
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if (!header)
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continue;
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const firstColon = header.indexOf(':');
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if (firstColon === -1) {
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socket.destroy();
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return reject(new Error(`Invalid header from proxy CONNECT response: "${header}"`));
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}
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const key = header.slice(0, firstColon).toLowerCase();
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const value = header.slice(firstColon + 1).trimStart();
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const current = headers[key];
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if (typeof current === 'string') {
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headers[key] = [current, value];
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}
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else if (Array.isArray(current)) {
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current.push(value);
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}
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else {
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headers[key] = value;
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}
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}
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debug('got proxy server response: %o %o', firstLine, headers);
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cleanup();
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resolve({
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connect: {
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statusCode,
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statusText,
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headers,
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},
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buffered,
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});
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}
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socket.on('error', onerror);
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socket.on('end', onend);
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read();
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});
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}
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exports.parseProxyResponse = parseProxyResponse;
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//# sourceMappingURL=parse-proxy-response.js.map
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