agent.js•1.06 kB
// Copyright 2013 Lovell Fuller and others.
// SPDX-License-Identifier: Apache-2.0
'use strict';
const url = require('url');
const tunnelAgent = require('tunnel-agent');
const is = require('./is');
const proxies = [
'HTTPS_PROXY',
'https_proxy',
'HTTP_PROXY',
'http_proxy',
'npm_config_https_proxy',
'npm_config_proxy'
];
function env (key) {
return process.env[key];
}
module.exports = function (log) {
try {
const proxy = new url.URL(proxies.map(env).find(is.string));
const tunnel = proxy.protocol === 'https:'
? tunnelAgent.httpsOverHttps
: tunnelAgent.httpsOverHttp;
const proxyAuth = proxy.username && proxy.password
? `${decodeURIComponent(proxy.username)}:${decodeURIComponent(proxy.password)}`
: null;
log(`Via proxy ${proxy.protocol}//${proxy.hostname}:${proxy.port} ${proxyAuth ? 'with' : 'no'} credentials`);
return tunnel({
proxy: {
port: Number(proxy.port),
host: proxy.hostname,
proxyAuth
}
});
} catch (err) {
return null;
}
};