use auth in proxies

related to #1942

src/typings/http-proxy-agent.d.ts

@@ -5,8 +5,16 @@
 
 declare module 'http-proxy-agent' {
 
+	interface IHttpProxyAgentOptions {
+		host: string;
+		port: number;
+		auth?: string;
+	}
+
 	class HttpProxyAgent {
 		constructor(proxy: string);
+		constructor(opts: IHttpProxyAgentOptions);
 	}
+
 	export = HttpProxyAgent;
 }
\ No newline at end of file

src/typings/https-proxy-agent.d.ts

@@ -10,6 +10,7 @@ declare module 'https-proxy-agent' {
 	interface IHttpsProxyAgentOptions extends tls.ConnectionOptions {
 		host: string;
 		port: number;
+		auth?: string;
 		secureProxy?: boolean;
 		secureEndpoint?: boolean;
 	}

src/vs/base/node/proxy.ts

@@ -7,6 +7,7 @@
 
 import { Url, parse as parseUrl } from 'url';
 import { isBoolean } from 'vs/base/common/types';
+import { assign } from 'vs/base/common/objects';
 import HttpProxyAgent = require('http-proxy-agent');
 import HttpsProxyAgent = require('https-proxy-agent');
 
@@ -39,13 +40,12 @@ export function getProxyAgent(rawRequestURL: string, options: IOptions = {}): an
 		return null;
 	}
 
-	if (requestURL.protocol === 'http:') {
-		return new HttpProxyAgent(proxyURL);
-	}
-
-	return new HttpsProxyAgent({
+	const opts = {
 		host: proxyEndpoint.hostname,
 		port: Number(proxyEndpoint.port),
+		auth: proxyEndpoint.auth,
 		rejectUnauthorized: isBoolean(options.strictSSL) ? options.strictSSL : true
-	});
+	};
+
+	return requestURL.protocol === 'http:' ? new HttpProxyAgent(opts) : new HttpsProxyAgent(opts);
 }
\ No newline at end of file