Add proxyAuth (ability to specify user/password for proxy)

Author: ndmanvar

lib/transports.js

@@ -7,6 +7,7 @@ var timeoutReq = require('timed-out');
 var http = require('http');
 var https = require('https');
 var tunnel = require('tunnel-agent');
+var Buffer = require("safe-buffer").Buffer;
 
 var agentOptions = {
   keepAlive: true,
@@ -41,6 +42,11 @@ HTTPTransport.prototype.send = function (client, message, headers, eventId, cb)
     if (client.dsn.protocol === 'http') {
       options.path = 'http://' + client.dsn.host + ':' + client.dsn.port + client.dsn.path + 'api/' + client.dsn.project_id + '/store/';
       delete options.hostname; // only 'host' should be set when using proxy
+
+      if (this.options.proxyAuth) {
+        // might be able to use httpOverHttp agent
+        options.headers["Proxy-Authorization"] = "Basic " + Buffer.from(this.options.proxyAuth).toString("base64");
+      }
     } else {
       this.options.agent.proxyOptions.headers = {
         'Content-Type': 'application/octet-stream',
@@ -117,6 +123,10 @@ function HTTPProxyTransport(options) {
   this.agent = httpAgent;
   this.options.host = options.proxyHost;
   this.options.port = options.proxyPort;
+
+  if (options.proxyUser && options.proxyPassword) {
+    this.options.proxyAuth = options.proxyUser + ':' + options.proxyPassword;
+  }
 }
 
 function HTTPSProxyTransport(options) {
@@ -127,7 +137,10 @@ function HTTPSProxyTransport(options) {
     proxy: {
       host: options.proxyHost,
       port: options.proxyPort,
-      proxyAuth: null // TODO: Add ability to specify creds/auth
+      proxyAuth:
+        options.proxyUser && options.proxyPassword
+          ? options.proxyUser + ':' + options.proxyPassword
+          : null
     },
     keepAlive: agentOptions.keepAlive,
     maxSockets: agentOptions.maxSockets