parse-proxy-response.js
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"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const debug_1 = __importDefault(require("debug"));
const debug = debug_1.default('https-proxy-agent:parse-proxy-response');
function parseProxyResponse(socket) {
return new Promise((resolve, reject) => {
// we need to buffer any HTTP traffic that happens with the proxy before we get
// the CONNECT response, so that if the response is anything other than an "200"
// response code, then we can re-play the "data" events on the socket once the
// HTTP parser is hooked up...
let buffersLength = 0;
const buffers = [];
function read() {
const b = socket.read();
if (b)
ondata(b);
else
socket.once('readable', read);
}
function cleanup() {
socket.removeListener('end', onend);
socket.removeListener('error', onerror);
socket.removeListener('close', onclose);
socket.removeListener('readable', read);
}
function onclose(err) {
debug('onclose had error %o', err);
}
function onend() {
debug('onend');
}
function onerror(err) {
cleanup();
debug('onerror %o', err);
reject(err);
}
function ondata(b) {
buffers.push(b);
buffersLength += b.length;
const buffered = Buffer.concat(buffers, buffersLength);
const endOfHeaders = buffered.indexOf('\r\n\r\n');
if (endOfHeaders === -1) {
// keep buffering
debug('have not received end of HTTP headers yet...');
read();
return;
}
const firstLine = buffered.toString('ascii', 0, buffered.indexOf('\r\n'));
const statusCode = +firstLine.split(' ')[1];
debug('got proxy server response: %o', firstLine);
resolve({
statusCode,
buffered
});
}
socket.on('error', onerror);
socket.on('close', onclose);
socket.on('end', onend);
read();
});
}
exports.default = parseProxyResponse;
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