chore: improve http request utilities

src/utils/registry.ts

@@ -605,7 +605,7 @@ export class Registry {
   private async _installMSEdgeChannel(channel: 'msedge'|'msedge-beta'|'msedge-dev', scripts: Record<'linux' | 'darwin' | 'win32', string>) {
     const scriptArgs: string[] = [];
     if (process.platform !== 'linux') {
-      const products = JSON.parse(await fetchData('https://edgeupdates.microsoft.com/api/products'));
+      const products = JSON.parse(await fetchData({ url: 'https://edgeupdates.microsoft.com/api/products' }));
       const productName = {
         'msedge': 'Stable',
         'msedge-beta': 'Beta',

src/utils/utils.ts

@@ -20,6 +20,8 @@ import stream from 'stream';
 import removeFolder from 'rimraf';
 import * as crypto from 'crypto';
 import os from 'os';
+import http from 'http';
+import https from 'https';
 import { spawn, SpawnOptions } from 'child_process';
 import { getProxyForUrl } from 'proxy-from-env';
 import * as URL from 'url';
@@ -37,53 +39,63 @@ const ProxyAgent = require('https-proxy-agent');
 
 export const existsAsync = (path: string): Promise<boolean> => new Promise(resolve => fs.stat(path, err => resolve(!err)));
 
-function httpRequest(url: string, method: string, response: (r: any) => void) {
-  let options: any = URL.parse(url);
-  options.method = method;
+type HTTPRequestParams = {
+  url: string,
+  method?: string,
+  headers?: http.OutgoingHttpHeaders,
+  data?: string | Buffer,
+};
 
-  const proxyURL = getProxyForUrl(url);
+function httpRequest(params: HTTPRequestParams, onResponse: (r: http.IncomingMessage) => void, onError: (error: Error) => void) {
+  const parsedUrl = URL.parse(params.url);
+  let options: https.RequestOptions = { ...parsedUrl };
+  options.method = params.method || 'GET';
+  options.headers = params.headers;
+
+  const proxyURL = getProxyForUrl(params.url);
   if (proxyURL) {
-    if (url.startsWith('http:')) {
+    if (params.url.startsWith('http:')) {
       const proxy = URL.parse(proxyURL);
       options = {
-        path: options.href,
+        path: parsedUrl.href,
         host: proxy.hostname,
         port: proxy.port,
       };
     } else {
-      const parsedProxyURL: any = URL.parse(proxyURL);
-      parsedProxyURL.secureProxy = parsedProxyURL.protocol === 'https:';
+      const parsedProxyURL = URL.parse(proxyURL);
+      (parsedProxyURL as any).secureProxy = parsedProxyURL.protocol === 'https:';
 
       options.agent = new ProxyAgent(parsedProxyURL);
       options.rejectUnauthorized = false;
     }
   }
 
-  const requestCallback = (res: any) => {
-    if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location)
-      httpRequest(res.headers.location, method, response);
+  const requestCallback = (res: http.IncomingMessage) => {
+    const statusCode = res.statusCode || 0;
+    if (statusCode >= 300 && statusCode < 400 && res.headers.location)
+      httpRequest({ ...params, url: res.headers.location }, onResponse, onError);
     else
-      response(res);
+      onResponse(res);
   };
   const request = options.protocol === 'https:' ?
-    require('https').request(options, requestCallback) :
-    require('http').request(options, requestCallback);
-  request.end();
-  return request;
+    https.request(options, requestCallback) :
+    http.request(options, requestCallback);
+  request.on('error', onError);
+  request.end(params.data);
 }
 
-export function fetchData(url: string): Promise<string> {
+export function fetchData(params: HTTPRequestParams): Promise<string> {
   return new Promise((resolve, reject) => {
-    httpRequest(url, 'GET', function(response){
+    httpRequest(params, response => {
       if (response.statusCode !== 200) {
-        reject(new Error(`fetch failed: server returned code ${response.statusCode}. URL: ${url}`));
+        reject(new Error(`fetch failed: server returned code ${response.statusCode}. URL: ${params.url}`));
         return;
       }
       let body = '';
       response.on('data', (chunk: string) => body += chunk);
       response.on('error', (error: any) => reject(error));
       response.on('end', () => resolve(body));
-    }).on('error', (error: any) => reject(error));
+    }, reject);
   });
 }
 
@@ -104,7 +116,7 @@ export function downloadFile(url: string, destinationPath: string, options: {pro
 
   const promise: Promise<{error: any}> = new Promise(x => { fulfill = x; });
 
-  const request = httpRequest(url, 'GET', response => {
+  httpRequest({ url }, response => {
     log(`-- response status code: ${response.statusCode}`);
     if (response.statusCode !== 200) {
       const error = new Error(`Download failed: server returned code ${response.statusCode}. URL: ${url}`);
@@ -117,12 +129,11 @@ export function downloadFile(url: string, destinationPath: string, options: {pro
     file.on('finish', () => fulfill({error: null}));
     file.on('error', error => fulfill({error}));
     response.pipe(file);
-    totalBytes = parseInt(response.headers['content-length'], 10);
+    totalBytes = parseInt(response.headers['content-length'] || '0', 10);
     log(`-- total bytes: ${totalBytes}`);
     if (progressCallback)
       response.on('data', onData);
-  });
-  request.on('error', (error: any) => fulfill({error}));
+  }, (error: any) => fulfill({error}));
   return promise;
 
   function onData(chunk: string) {