Add ability to use manager with proxy (#94)

Closes #88

Author: rosolko

README.md

@@ -201,6 +201,10 @@ Only for Google Chrome so far, you can specify to automatically download a ```ch
 
     new DriverManager().SetUpDriver(new TaobaoPhantomConfig());
 
+
+### Using with proxy:
+	new DriverManager().WithProxy(previouslyInitializedProxy).SetUpDriver(new ChromeConfig());
+
 ## Thanks
 Thanks to the following companies for generously providing their services/products to help improve this project:
 

WebDriverManager.Tests/DriverManagerTests.cs

@@ -1,3 +1,5 @@
+using System;
+using System.Net;
 using WebDriverManager.DriverConfigs.Impl;
 using Xunit;
 
@@ -11,6 +13,27 @@ public void ChromeTest()
         {
             new DriverManager().SetUpDriver(new ChromeConfig());
         }
+
+        [Fact]
+        public void DownloadZipFileWithProxy()
+        {
+            var webProxyStub = new WebProxyStub();
+            new DriverManager().WithProxy(webProxyStub).SetUpDriver(new ChromeConfig());
+            Assert.True(webProxyStub.IsBypassed(webProxyStub.RequestedUri));
+        }
+
+        private class WebProxyStub : IWebProxy
+        {
+            public Uri RequestedUri { get; private set; }
+            public ICredentials Credentials { get; set; }
+            public Uri GetProxy(Uri destination) => new Uri("http://localhost");
+
+            public bool IsBypassed(Uri host)
+            {
+                RequestedUri = host;
+                return true;
+            }
+        }
     }
 
     public class ParallelDriverManagerTests

WebDriverManager/DriverManager.cs

@@ -1,4 +1,4 @@
-using System;
+using System.Net;
 using WebDriverManager.DriverConfigs;
 using WebDriverManager.Helpers;
 using WebDriverManager.Services;
@@ -10,7 +10,7 @@ public class DriverManager
     {
         private static readonly object Object = new object();
 
-        private readonly IBinaryService _binaryService;
+        private IBinaryService _binaryService;
         private readonly IVariableService _variableService;
 
         public DriverManager()
@@ -25,6 +25,12 @@ public DriverManager(IBinaryService binaryService, IVariableService variableServ
             _variableService = variableService;
         }
 
+        public DriverManager WithProxy(IWebProxy proxy)
+        {
+            _binaryService = new BinaryService {Proxy = proxy};
+            return this;
+        }
+
         public void SetUpDriver(string url, string binaryPath, string binaryName)
         {
             var zipPath = FileHelper.GetZipDestination(url);

WebDriverManager/Helpers/RegistryHelper.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
-using System.Text;
 using Microsoft.Win32;
 
 namespace WebDriverManager.Helpers

WebDriverManager/Helpers/VersionHelper.cs

@@ -1,6 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Text;
 
 namespace WebDriverManager.Helpers
 {

WebDriverManager/Services/Impl/BinaryService.cs

@@ -12,6 +12,8 @@ namespace WebDriverManager.Services.Impl
 {
     public class BinaryService : IBinaryService
     {
+        public IWebProxy Proxy { get; set; }
+
         public string SetupBinary(string url, string zipDestination, string binDestination, string binaryName)
         {
             if (File.Exists(binDestination)) return binDestination;
@@ -36,19 +38,29 @@ public string SetupBinary(string url, string zipDestination, string binDestinati
                 RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
             {
                 var chmod = Process.Start("chmod", $"+x {binDestination}");
-                chmod.WaitForExit();
+                chmod?.WaitForExit();
             }
 
             RemoveZip(zipDestination);
             return binDestination;
         }
 
-        protected string DownloadZip(string url, string destination)
+        public string DownloadZip(string url, string destination)
         {
             if (File.Exists(destination)) return destination;
-            using (var webClient = new WebClient())
+            if (Proxy != null)
             {
-                webClient.DownloadFile(new Uri(url), destination);
+                using (var webClient = new WebClient() {Proxy = Proxy})
+                {
+                    webClient.DownloadFile(new Uri(url), destination);
+                }
+            }
+            else
+            {
+                using (var webClient = new WebClient())
+                {
+                    webClient.DownloadFile(new Uri(url), destination);
+                }
             }
 
             return destination;