Add proxy to one signal node

lib/client.js

@@ -2,7 +2,9 @@
 
 var request = require('request');
 var constants = require('./constants');
-
+var proxyUrl
+var urlModule = require('url')
+var HttpsProxyAgent = require('https-proxy-agent')
 var ALLOWED_CREDENTIALS = [
   { name: 'userAuthKey', type: 'string' },
   { name: 'app', type: 'object', requiredFields: ['appAuthKey', 'appId'] },
@@ -20,7 +22,8 @@ var ALLOWED_CREDENTIALS = [
 var basicRequest = function (url, apiKey, method, body, callback) {
   var options = {
     url: url,
-    method: method
+    method: method,
+    agent: new HttpsProxyAgent(urlModule.parse(proxyUrl)),
   };
   if (apiKey) {
     options.headers = {
@@ -74,9 +77,11 @@ var checkCredential = function (credentialName, credential) {
 /**
  *
  * @param credentials { JSON }
+ * @param httpsProxyUrl String
  * @constructor
  */
-var Client = function (credentials) {
+var Client = function (credentials, httpsProxyUrl) {
+  proxyUrl = httpsProxyUrl
   if (typeof credentials !== 'object') {
     throw 'credentials parameter must be a JSON object'
   }

package.json

@@ -28,6 +28,7 @@
     "mocha": "^5.2.0"
   },
   "dependencies": {
+    "https-proxy-agent": "^2.2.1",
     "request": "^2.87.0"
   }
 }