Added support for custom http agent

packages/web3-core-helpers/types/index.d.ts

@@ -18,6 +18,8 @@
  */
 
 import * as net from 'net';
+import * as http from 'http';
+import * as https from 'https';
 
 export class formatters {
     static outputBigNumberFormatter(number: number): number;
@@ -158,6 +160,13 @@ export interface HttpProviderOptions {
     timeout?: number;
     headers?: HttpHeader[];
     withCredentials?: boolean;
+    agent?: HttpAgent
+}
+
+export interface HttpAgent {
+    http?: http.Agent;
+    https?: https.Agent;
+    baseUrl?: string;
 }
 
 export interface HttpHeader {

packages/web3-providers-http/src/index.js

@@ -34,18 +34,19 @@ var https = require('https');
 var HttpProvider = function HttpProvider(host, options) {
     options = options || {};
 
+    this.withCredentials = options.withCredentials || false;
+    this.timeout = options.timeout || 0;
+    this.headers = options.headers;
+    this.agent = options.agent;
+    this.connected = false;
+
     var keepAlive = (options.keepAlive === true || options.keepAlive !== false) ? true : false;
     this.host = host || 'http://localhost:8545';
-    if (this.host.substring(0,5) === "https") {
+    if (!this.agent && this.host.substring(0,5) === "https") {
         this.httpsAgent = new https.Agent({ keepAlive: keepAlive });
     } else {
         this.httpAgent = new http.Agent({ keepAlive: keepAlive });
     }
-
-    this.withCredentials = options.withCredentials || false;
-    this.timeout = options.timeout || 0;
-    this.headers = options.headers;
-    this.connected = false;
 };
 
 HttpProvider.prototype._prepareRequest = function(){
@@ -56,10 +57,15 @@ HttpProvider.prototype._prepareRequest = function(){
         request = new XMLHttpRequest();
     } else {
         request = new XHR2();
-        request.nodejsSet({
-            httpsAgent:this.httpsAgent,
-            httpAgent:this.httpAgent
-        });
+        var agents = {httpsAgent: this.httpsAgent, httpAgent: this.httpAgent, baseUrl: this.baseUrl};
+
+        if (this.agent) {
+            agents.httpsAgent = this.agent.https;
+            agents.httpAgent = this.agent.http;
+            agents.baseUrl = this.agent.baseUrl;
+        }
+
+        request.nodejsSet(agents);
     }
 
     request.open('POST', this.host, true);

packages/web3-providers-http/types/tests/web3-provider-http-tests.ts

@@ -20,6 +20,8 @@
  * @date 2018
  */
 
+import * as http from 'http';
+import * as https from 'https';
 import { HttpProvider } from 'web3-providers';
 import { JsonRpcResponse } from 'web3-core-helpers';
 
@@ -31,7 +33,12 @@ const httpProvider = new HttpProvider('http://localhost:8545', {
             value: '*'
         }
     ],
-    withCredentials: false
+    withCredentials: false,
+    agent: {
+        baseUrl: 'base',
+        http: new http.Agent({}),
+        https: new https.Agent({})
+    }
 });
 
 // $ExpectType void