codekingpro/portable-devtools

1"use strict";
2var __importDefault = (this && this.__importDefault) || function (mod) {
3    return (mod && mod.__esModule) ? mod : { "default": mod };
4};
5Object.defineProperty(exports, "__esModule", { value: true });
6exports.parseProxyResponse = void 0;
7const debug_1 = __importDefault(require("debug"));
8const debug = (0, debug_1.default)('https-proxy-agent:parse-proxy-response');
9function parseProxyResponse(socket) {
10    return new Promise((resolve, reject) => {
11        // we need to buffer any HTTP traffic that happens with the proxy before we get
12        // the CONNECT response, so that if the response is anything other than an "200"
13        // response code, then we can re-play the "data" events on the socket once the
14        // HTTP parser is hooked up...
15        let buffersLength = 0;
16        const buffers = [];
17        function read() {
18            const b = socket.read();
19            if (b)
20                ondata(b);
21            else
22                socket.once('readable', read);
23        }
24        function cleanup() {
25            socket.removeListener('end', onend);
26            socket.removeListener('error', onerror);
27            socket.removeListener('readable', read);
28        }
29        function onend() {
30            cleanup();
31            debug('onend');
32            reject(new Error('Proxy connection ended before receiving CONNECT response'));
33        }
34        function onerror(err) {
35            cleanup();
36            debug('onerror %o', err);
37            reject(err);
38        }
39        function ondata(b) {
40            buffers.push(b);
41            buffersLength += b.length;
42            const buffered = Buffer.concat(buffers, buffersLength);
43            const endOfHeaders = buffered.indexOf('\r\n\r\n');
44            if (endOfHeaders === -1) {
45                // keep buffering
46                debug('have not received end of HTTP headers yet...');
47                read();
48                return;
49            }
50            const headerParts = buffered
51                .slice(0, endOfHeaders)
52                .toString('ascii')
53                .split('\r\n');
54            const firstLine = headerParts.shift();
55            if (!firstLine) {
56                socket.destroy();
57                return reject(new Error('No header received from proxy CONNECT response'));
58            }
59            const firstLineParts = firstLine.split(' ');
60            const statusCode = +firstLineParts[1];
61            const statusText = firstLineParts.slice(2).join(' ');
62            const headers = {};
63            for (const header of headerParts) {
64                if (!header)
65                    continue;
66                const firstColon = header.indexOf(':');
67                if (firstColon === -1) {
68                    socket.destroy();
69                    return reject(new Error(`Invalid header from proxy CONNECT response: "${header}"`));
70                }
71                const key = header.slice(0, firstColon).toLowerCase();
72                const value = header.slice(firstColon + 1).trimStart();
73                const current = headers[key];
74                if (typeof current === 'string') {
75                    headers[key] = [current, value];
76                }
77                else if (Array.isArray(current)) {
78                    current.push(value);
79                }
80                else {
81                    headers[key] = value;
82                }
83            }
84            debug('got proxy server response: %o %o', firstLine, headers);
85            cleanup();
86            resolve({
87                connect: {
88                    statusCode,
89                    statusText,
90                    headers,
91                },
92                buffered,
93            });
94        }
95        socket.on('error', onerror);
96        socket.on('end', onend);
97        read();
98    });
99}
100exports.parseProxyResponse = parseProxyResponse;
101//# sourceMappingURL=parse-proxy-response.js.map