Updating DropboxAuthenticatedContext.cs and DropboxAuthennticationHandler.cs to use the Dropbox v2 API as they're shutting down their v1 API: https://blogs.dropbox.com/developers/2017/09/api-v1-shutdown-details/ (#216)

As per issue: https://github.com/TerribleDev/OwinOAuthProviders/issues/215

Gemfile.lock

@@ -23,4 +23,4 @@ DEPENDENCIES
   os
 
 BUNDLED WITH
-   1.12.1
+   1.13.7

OwinOAuthProvidersDemo/App_Start/Startup.Auth.cs

@@ -3,6 +3,7 @@ using Microsoft.Owin;
 using Microsoft.Owin.Security.Cookies;
 using Owin;
 using Owin.Security.Providers.Evernote;
+using Owin.Security.Providers.PayPal;
 
 namespace OwinOAuthProvidersDemo
 {
@@ -193,10 +194,20 @@ namespace OwinOAuthProvidersDemo
             //	clientId: "",
             //	clientSecret: "");
 
-			//app.UsePayPalAuthentication(
+            // PayPal no longer supports Tls 1.0 or 1.1
-			//	clientId: "",
+            // https://devblog.paypal.com/upcoming-security-changes-notice/
-			//	clientSecret: "",
+            // http://stackoverflow.com/questions/34939523/the-request-was-aborted-could-not-create-ssl-tls-secure-channel-sandbox-account
-			//	isSandbox: false);
+            // System.Net.ServicePointManager.SecurityProtocol = System.Net.ServicePointManager.SecurityProtocol | System.Net.SecurityProtocolType.Tls12;
+            // The Return URL must be configured in the PayPal application to https://[hostname][:port]/signin-paypal
+            // PayPalAuthenticationOptions payPalOptions = new PayPalAuthenticationOptions(true);
+            // payPalOptions.ClientId = "";
+            // payPalOptions.ClientSecret = "";
+            // payPalOptions.Scope.Add("email");
+            // payPalOptions.Scope.Add("profile");
+            // payPalOptions.Scope.Add("address");
+            // payPalOptions.Scope.Add("https://uri.paypal.com/services/expresscheckout");
+
+            // app.UsePayPalAuthentication(payPalOptions);
 
             //app.UseWargamingAccountAuthentication("", WargamingAuthenticationOptions.Region.NorthAmerica);
 

OwinOAuthProvidersDemo/OwinOAuthProvidersDemo.csproj

@@ -252,14 +252,214 @@
     <Content Include="Scripts\jquery-2.2.3.min.map" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\base\Owin.Security.Providers.OpenIDBase\Owin.Security.Providers.OpenIDBase.csproj">
+      <Project>{4fd7b873-1994-4990-aa40-c37060121494}</Project>
+      <Name>Owin.Security.Providers.OpenIDBase</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.ArcGISOnline\Owin.Security.Providers.ArcGISOnline.csproj">
+      <Project>{8a49faef-d365-4d25-942c-1cad03845a5e}</Project>
+      <Name>Owin.Security.Providers.ArcGISOnline</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Asana\Owin.Security.Providers.Asana.csproj">
+      <Project>{f3e27220-1d8c-4037-94aa-7b7f4a12f351}</Project>
+      <Name>Owin.Security.Providers.Asana</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Backlog\Owin.Security.Providers.Backlog.csproj">
+      <Project>{2dc03778-9ef1-466a-83ec-7d8422decd23}</Project>
+      <Name>Owin.Security.Providers.Backlog</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Baidu\Owin.Security.Providers.Baidu.csproj">
+      <Project>{e2759807-4d7c-4288-aac8-f5b7b4616680}</Project>
+      <Name>Owin.Security.Providers.Baidu</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.BattleNet\Owin.Security.Providers.BattleNet.csproj">
+      <Project>{99a175da-ade4-436c-a272-c8ae44b7a086}</Project>
+      <Name>Owin.Security.Providers.BattleNet</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Bitbucket\Owin.Security.Providers.Bitbucket.csproj">
+      <Project>{e5212fc7-abcb-462f-9989-8e022dffe43c}</Project>
+      <Name>Owin.Security.Providers.Bitbucket</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Box\Owin.Security.Providers.Box.csproj">
+      <Project>{1aef8813-e1f9-41e1-bc8d-732960595e9f}</Project>
+      <Name>Owin.Security.Providers.Box</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Buffer\Owin.Security.Providers.Buffer.csproj">
+      <Project>{6f75fc1f-d9e9-49b3-a6ce-cfa8feea11a5}</Project>
+      <Name>Owin.Security.Providers.Buffer</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Cosign\Owin.Security.Providers.Cosign.csproj">
+      <Project>{1f1f8d6b-7219-46fa-93d3-8d3061a6cbbf}</Project>
+      <Name>Owin.Security.Providers.Cosign</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.DeviantArt\Owin.Security.Providers.DeviantArt.csproj">
+      <Project>{fabd2e54-976d-41f5-8800-dee58acc027c}</Project>
+      <Name>Owin.Security.Providers.DeviantArt</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Discord\Owin.Security.Providers.Discord.csproj">
+      <Project>{4be728eb-778a-41af-8dea-0c7159711d44}</Project>
+      <Name>Owin.Security.Providers.Discord</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.DoYouBuzz\Owin.Security.Providers.DoYouBuzz.csproj">
+      <Project>{4550d8bd-05a7-44f8-bbc0-c3d8e7af2912}</Project>
+      <Name>Owin.Security.Providers.DoYouBuzz</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Dropbox\Owin.Security.Providers.Dropbox.csproj">
+      <Project>{cef697b1-3651-49e5-9060-65f2e26c039c}</Project>
+      <Name>Owin.Security.Providers.Dropbox</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.EVEOnline\Owin.Security.Providers.EVEOnline.csproj">
+      <Project>{f5dc23f4-5042-4024-9e34-aca648602ba0}</Project>
+      <Name>Owin.Security.Providers.EVEOnline</Name>
+    </ProjectReference>
     <ProjectReference Include="..\src\Owin.Security.Providers.Evernote\Owin.Security.Providers.Evernote.csproj">
       <Project>{b8f05057-8b9f-44ce-b983-99cb7c2e9e5a}</Project>
       <Name>Owin.Security.Providers.Evernote</Name>
     </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Fitbit\Owin.Security.Providers.Fitbit.csproj">
+      <Project>{ca44d014-5a74-4749-a891-1f711fd3a266}</Project>
+      <Name>Owin.Security.Providers.Fitbit</Name>
+    </ProjectReference>
     <ProjectReference Include="..\src\Owin.Security.Providers.Flickr\Owin.Security.Providers.Flickr.csproj">
       <Project>{af6cbeb8-5638-43d4-839e-c81f305960be}</Project>
       <Name>Owin.Security.Providers.Flickr</Name>
     </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Foursquare\Owin.Security.Providers.Foursquare.csproj">
+      <Project>{8acd9194-1efe-4128-ac42-856d856332a4}</Project>
+      <Name>Owin.Security.Providers.Foursquare</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Geni\Owin.Security.Providers.Geni.csproj">
+      <Project>{9de25431-f935-48d7-8eb5-acb6f918111c}</Project>
+      <Name>Owin.Security.Providers.Geni</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.GitHub\Owin.Security.Providers.GitHub.csproj">
+      <Project>{803f9eb7-029c-45ac-ab81-135e60d5beae}</Project>
+      <Name>Owin.Security.Providers.GitHub</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Gitter\Owin.Security.Providers.Gitter.csproj">
+      <Project>{42ec50eb-0c51-460c-93a4-1e007bf1f323}</Project>
+      <Name>Owin.Security.Providers.Gitter</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.GooglePlus\Owin.Security.Providers.GooglePlus.csproj">
+      <Project>{d3fef959-0e0e-4f50-954c-f123a0b629dc}</Project>
+      <Name>Owin.Security.Providers.GooglePlus</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.HealthGraph\Owin.Security.Providers.HealthGraph.csproj">
+      <Project>{157bb715-29b2-4202-8a59-ccbacfcbedd3}</Project>
+      <Name>Owin.Security.Providers.HealthGraph</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Imgur\Owin.Security.Providers.Imgur.csproj">
+      <Project>{101841d3-645e-4a44-af8b-8aaa85ceea4e}</Project>
+      <Name>Owin.Security.Providers.Imgur</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Instagram\Owin.Security.Providers.Instagram.csproj">
+      <Project>{041178c4-6131-4d68-9896-ce33124d83a0}</Project>
+      <Name>Owin.Security.Providers.Instagram</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.LinkedIn\Owin.Security.Providers.LinkedIn.csproj">
+      <Project>{9fa87825-30e9-48d7-ac4a-39e8f0c2777c}</Project>
+      <Name>Owin.Security.Providers.LinkedIn</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.MyHeritage\Owin.Security.Providers.MyHeritage.csproj">
+      <Project>{84795078-31b5-4369-bd1b-f960165f8c71}</Project>
+      <Name>Owin.Security.Providers.MyHeritage</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Onshape\Owin.Security.Providers.Onshape.csproj">
+      <Project>{9fec99f8-6f45-40a2-8200-85381434c79a}</Project>
+      <Name>Owin.Security.Providers.Onshape</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.OpenID\Owin.Security.Providers.OpenID.csproj">
+      <Project>{90c152d7-9c66-4949-9998-c7ce48b593de}</Project>
+      <Name>Owin.Security.Providers.OpenID</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Orcid\Owin.Security.Providers.Orcid.csproj">
+      <Project>{89cb4342-e23d-4e7c-89e5-c369599a5860}</Project>
+      <Name>Owin.Security.Providers.Orcid</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.PayPal\Owin.Security.Providers.PayPal.csproj">
+      <Project>{f7129064-3db7-4b79-81d3-80130d664e45}</Project>
+      <Name>Owin.Security.Providers.PayPal</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Reddit\Owin.Security.Providers.Reddit.csproj">
+      <Project>{d0cd86c8-a6f9-4c6c-9bf0-eaa461e7fbad}</Project>
+      <Name>Owin.Security.Providers.Reddit</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Salesforce\Owin.Security.Providers.Salesforce.csproj">
+      <Project>{827a9d68-0dd4-4c5e-b763-8302faeedecc}</Project>
+      <Name>Owin.Security.Providers.Salesforce</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Shopify\Owin.Security.Providers.Shopify.csproj">
+      <Project>{67f12bfb-eb3a-4a86-b5dc-f4c066fdf792}</Project>
+      <Name>Owin.Security.Providers.Shopify</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.SlackProvider\Owin.Security.Providers.SlackProvider.csproj">
+      <Project>{3e6f293d-8500-428d-bdc9-27440cc91e16}</Project>
+      <Name>Owin.Security.Providers.SlackProvider</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.SoundCloud\Owin.Security.Providers.SoundCloud.csproj">
+      <Project>{2c959026-7058-4302-a6c4-dfd10a030585}</Project>
+      <Name>Owin.Security.Providers.SoundCloud</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Spotify\Owin.Security.Providers.Spotify.csproj">
+      <Project>{683b4041-a399-40ce-84b8-392f08a6805d}</Project>
+      <Name>Owin.Security.Providers.Spotify</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.StackExchange\Owin.Security.Providers.StackExchange.csproj">
+      <Project>{2c0e07ed-f26d-4ff8-8c3d-f760c09a2d5a}</Project>
+      <Name>Owin.Security.Providers.StackExchange</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Steam\Owin.Security.Providers.Steam.csproj">
+      <Project>{312c4ed7-8ca1-4723-9203-abc694dfdc7c}</Project>
+      <Name>Owin.Security.Providers.Steam</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.TripIt\Owin.Security.Providers.TripIt.csproj">
+      <Project>{b35e2616-dc00-48b4-bd58-7e23046257f1}</Project>
+      <Name>Owin.Security.Providers.TripIt</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Twitch\Owin.Security.Providers.Twitch.csproj">
+      <Project>{c3cf8734-6aac-4f59-9a3e-1cba8582cd48}</Project>
+      <Name>Owin.Security.Providers.Twitch</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Untappd\Owin.Security.Providers.Untappd.csproj">
+      <Project>{3e89eca3-f4e7-4181-b26b-8250d5151044}</Project>
+      <Name>Owin.Security.Providers.Untappd</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Vimeo\Owin.Security.Providers.Vimeo.csproj">
+      <Project>{98ecc703-d651-4ead-a55d-aa3e903ae4d7}</Project>
+      <Name>Owin.Security.Providers.Vimeo</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.VisualStudio\Owin.Security.Providers.VisualStudio.csproj">
+      <Project>{3b19fa31-ddff-427f-9d73-f860de74bbc2}</Project>
+      <Name>Owin.Security.Providers.VisualStudio</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.VKontakte\Owin.Security.Providers.VKontakte.csproj">
+      <Project>{32d70e31-3799-482a-ac7a-081ff9206fc3}</Project>
+      <Name>Owin.Security.Providers.VKontakte</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Wargaming\Owin.Security.Providers.Wargaming.csproj">
+      <Project>{aa72bfce-8495-4a4d-988d-f8d490521776}</Project>
+      <Name>Owin.Security.Providers.Wargaming</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.WordPress\Owin.Security.Providers.WordPress.csproj">
+      <Project>{0ede8223-dd5f-4db8-a98a-64b1f4591f48}</Project>
+      <Name>Owin.Security.Providers.WordPress</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.WSO2\Owin.Security.Providers.WSO2.csproj">
+      <Project>{8fd3a9cb-e684-42c0-a8bf-7746fdd3d43c}</Project>
+      <Name>Owin.Security.Providers.WSO2</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Xing\Owin.Security.Providers.Xing.csproj">
+      <Project>{d497d8bd-6ef9-4c30-b195-b0dd153418d6}</Project>
+      <Name>Owin.Security.Providers.Xing</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Yahoo\Owin.Security.Providers.Yahoo.csproj">
+      <Project>{1765bedb-9e4b-468c-baf6-06784cdced67}</Project>
+      <Name>Owin.Security.Providers.Yahoo</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\src\Owin.Security.Providers.Yammer\Owin.Security.Providers.Yammer.csproj">
+      <Project>{8d029a93-e687-4ddf-82b0-700ebbf477f7}</Project>
+      <Name>Owin.Security.Providers.Yammer</Name>
+    </ProjectReference>
   </ItemGroup>
   <PropertyGroup>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>

Rakefile.rb

@@ -9,13 +9,13 @@ require 'nokogiri'
 require 'openssl'
 import 'nuget.rake'
 
-CLEAN.include(['src/**/obj', 'src/**/bin', 'tool', 'packages/**','src/**/*.nuspec', 'src/**/*.nupkg', 'tools', 'packages', '*.nupkg'])
+CLEAN.include(['src/**/obj', 'Owin.Security.Providers.nuspec', 'Owin.Security.Providers-signed.nuspec' 'src/**/bin', 'tool', 'packages/**','src/**/*.nuspec', 'src/**/*.nupkg', 'tools', 'packages', '*.nupkg'])
 Configuration = ENV['CONFIGURATION'] || 'Release'
 PACKAGES = File.expand_path("packages")
 TOOLS = File.expand_path("tools")
 NUGET = File.expand_path("#{TOOLS}/nuget")
 NUGET_EXE = File.expand_path("#{TOOLS}/nuget/nuget.exe")
-@version = "2.12.0"
+@version = "2.15.1"
 PROJECTS = Dir.glob('src/*').select{|dir| File.directory? dir }
 
 desc 'Retrieve things'
@@ -31,12 +31,15 @@ task :preflight => [:clean, :build, :nuspec_gen]
 desc 'publish'
 task :publish => [:preflight,:nuspec_gen, :nuspec_pack,  :nuspec_publish]
 
+
+
 build :compile do |t|
   t.prop 'Configuration', Configuration
   t.sln = 'OwinOAuthProviders.sln'
+  t.prop 'SignAssembly', 'true'
+  t.prop 'AssemblyOriginatorKeyFile', File.expand_path("keypair.snk")
 end
 
-
 desc "Generate nuspec files"
 task :nuspec_gen do
   template = ERB.new(File.read('nuspectemplate.nuspec.erb'))
@@ -51,6 +54,7 @@ task :nuspec_gen do
   File.write('Owin.Security.Providers.nuspec', ERB.new(File.read('global.nuspec.erb')).result())
 end
 
+
 desc 'pack nuspec files'
 task :nuspec_pack do
   PROJECTS.each{|dir|
@@ -61,6 +65,7 @@ task :nuspec_pack do
   sh "#{NUGET_EXE} pack Owin.Security.Providers.nuspec -Exclude \"**\""
 end
 
+
 desc 'publish nugets'
 task :nuspec_publish do
   PROJECTS.each{|dir|

base/Owin.Security.Providers.OpenIDBase/Owin.Security.Providers.OpenIDBase.csproj

@@ -89,6 +89,10 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>..\..\keypair.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

base/Owin.Security.Providers.OpenIDBase/Owin.Security.Providers.OpenIDBase.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>Owin.Security.Providers.OpenIDBase</id>
-    <version>2.1</version>
+    <version>2.1.1</version>
     <authors>Jerrie Pelser, Tommy Parnell and contributors</authors>
     <owners>Tommy Parnell</owners>
     <licenseUrl>http://opensource.org/licenses/MIT</licenseUrl>

src/Owin.Security.Providers.Dropbox/DropboxAuthenticationHandler.cs

@@ -17,8 +17,9 @@ namespace Owin.Security.Providers.Dropbox
     {
         private const string StateCookie = "_DropboxState";
         private const string XmlSchemaString = "http://www.w3.org/2001/XMLSchema#string";
-        private const string TokenEndpoint = "https://api.dropbox.com/1/oauth2/token";
+        private const string TokenEndpoint = "https://api.dropbox.com/oauth2/token";
-        private const string UserInfoEndpoint = "https://api.dropbox.com/1/account/info";
+        private const string UserInfoEndpoint = "https://api.dropbox.com/2/users/get_current_account";
+
 
         private readonly ILogger _logger;
         private readonly HttpClient _httpClient;
@@ -65,13 +66,13 @@ namespace Owin.Security.Providers.Dropbox
                 var redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
 
                 // Build up the body for the token request
-                var body = new List<KeyValuePair<string, string>>
+                var body = new Dictionary<string, string>
                 {
-                    new KeyValuePair<string, string>("grant_type", "authorization_code"),
+                    { "grant_type", "authorization_code" },
-                    new KeyValuePair<string, string>("code", code),
+                    { "code", code },
-                    new KeyValuePair<string, string>("redirect_uri", redirectUri),
+                    {"redirect_uri", redirectUri },
-                    new KeyValuePair<string, string>("client_id", Options.AppKey),
+                    { "client_id", Options.AppKey },
-                    new KeyValuePair<string, string>("client_secret", Options.AppSecret)
+                    { "client_secret", Options.AppSecret }
                 };
 
                 // Request the token
@@ -85,8 +86,8 @@ namespace Owin.Security.Providers.Dropbox
                 var accessToken = (string)response.access_token;
 
                 // Get the Dropbox user
-                var graphResponse = await _httpClient.GetAsync(
+                _httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);
-                    UserInfoEndpoint + "?access_token=" + Uri.EscapeDataString(accessToken), Request.CallCancelled);
+                var graphResponse = await _httpClient.PostAsync(UserInfoEndpoint, null);
                 graphResponse.EnsureSuccessStatusCode();
                 text = await graphResponse.Content.ReadAsStringAsync();
                 var user = JObject.Parse(text);
@@ -154,7 +155,7 @@ namespace Owin.Security.Providers.Dropbox
             GenerateCorrelationId(properties);
 
             var authorizationEndpoint =
-                "https://www.dropbox.com/1/oauth2/authorize" +
+                "https://www.dropbox.com/oauth2/authorize" +
                 "?response_type=code" +
                 "&client_id=" + Uri.EscapeDataString(Options.AppKey) +
                 "&redirect_uri=" + Uri.EscapeDataString(redirectUri);

src/Owin.Security.Providers.Dropbox/Provider/DropboxAuthenticatedContext.cs

@@ -25,7 +25,7 @@ namespace Owin.Security.Providers.Dropbox
             AccessToken = accessToken;
             User = user;
 
-            Id = TryGetValue(user, "uid");
+            Id = TryGetValue(user, "account_id");
             Name = TryGetValue(user, "display_name");
         }
 

src/Owin.Security.Providers.LinkedIn/LinkedInAuthenticationHandler.cs

@@ -61,7 +61,7 @@ namespace Owin.Security.Providers.LinkedIn
                     return new AuthenticationTicket(null, properties);
                 }
 
-                var requestPrefix = Request.Scheme + "://" + Request.Host;
+                var requestPrefix = Request.Scheme + "://" + this.GetHostName();
                 var redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
 
                 // Build up the body for the token request
@@ -173,7 +173,7 @@ namespace Owin.Security.Providers.LinkedIn
             var baseUri =
                 Request.Scheme +
                 Uri.SchemeDelimiter +
-                Request.Host +
+                this.GetHostName() +
                 Request.PathBase;
 
             var currentUri =
@@ -271,5 +271,15 @@ namespace Owin.Security.Providers.LinkedIn
 
             return context.IsRequestCompleted;
         }
+
+        /// <summary>
+        ///     Gets proxy host name from <see cref="LinkedInAuthenticationOptions"/> if it is set.
+        ///     If proxy host name is not set, gets application request host name.
+        /// </summary>
+        /// <returns>Host name.</returns>
+        private string GetHostName()
+        {
+            return string.IsNullOrWhiteSpace(Options.ProxyHost) ? Request.Host.ToString() : Options.ProxyHost;
+        }
     }
 }

src/Owin.Security.Providers.LinkedIn/LinkedInAuthenticationOptions.cs

@@ -43,6 +43,16 @@ namespace Owin.Security.Providers.LinkedIn
         /// </summary>
         public PathString CallbackPath { get; set; }
 
+        /// <summary>
+        ///     Gets or sets the middleware host name.
+        ///     The middleware processes the <see cref="CallbackPath"/> on this host name instead of the application's request host.
+        ///     If this is not set, the application's request host will be used.
+        /// </summary>
+        /// <remarks>
+        ///     Use this property when running behind a proxy.
+        /// </remarks>
+        public string ProxyHost { get; set; }
+
         /// <summary>
         ///     Get or sets the text that the user can display on a sign in user interface.
         /// </summary>

src/Owin.Security.Providers.OpenID/Owin.Security.Providers.OpenID.csproj

@@ -46,9 +46,8 @@
       <HintPath>..\..\packages\Owin.1.0\lib\net40\Owin.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Owin.Security.Providers.OpenIDBase, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="Owin.Security.Providers.OpenIDBase, Version=2.0.0.0, Culture=neutral, PublicKeyToken=1328b8c16b108c43, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Owin.Security.Providers.OpenIDBase.2.1\lib\net45\Owin.Security.Providers.OpenIDBase.dll</HintPath>
+      <HintPath>..\..\packages\Owin.Security.Providers.OpenIDBase.2.1.1\lib\net45\Owin.Security.Providers.OpenIDBase.dll</HintPath>
-      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />

src/Owin.Security.Providers.OpenID/packages.config

@@ -4,5 +4,5 @@
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="8.0.3" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />
-  <package id="Owin.Security.Providers.OpenIDBase" version="2.1" targetFramework="net45" />
+  <package id="Owin.Security.Providers.OpenIDBase" version="2.1.1" targetFramework="net45" />
 </packages>

src/Owin.Security.Providers.PayPal/PayPalAuthenticationHandler.cs

@@ -81,9 +81,25 @@ namespace Owin.Security.Providers.PayPal
                     new KeyValuePair<string, string>("code", code),
                     new KeyValuePair<string, string>("redirect_uri", redirectUri),
                 });
+
+                string text = "";
+                try
+                {
                     var tokenResponse = await _httpClient.SendAsync(requestMessage);
                     tokenResponse.EnsureSuccessStatusCode();
-                var text = await tokenResponse.Content.ReadAsStringAsync();
+                    text = await tokenResponse.Content.ReadAsStringAsync();
+                }
+                catch (HttpRequestException ex)
+                {
+                    if (ex.InnerException is System.Net.WebException && ex.InnerException.Message.Contains("TLS"))
+                    {
+                        if (!System.Net.ServicePointManager.SecurityProtocol.HasFlag(System.Net.SecurityProtocolType.Tls12))
+                        {
+                            throw new System.Net.WebException("PayPal requires TLS v1.2. TLS v1.0 and v1.1 connections will be refused. Set System.Net.ServicePointManager.SecurityProtocol = System.Net.ServicePointManager.SecurityProtocol | System.Net.SecurityProtocolType.Tls12", ex.InnerException);
+                        }                        
+                    }                    
+                    throw;                    
+                }               
 
                 // Deserializes the token response
                 var response = JsonConvert.DeserializeObject<dynamic>(text);

src/Owin.Security.Providers.Steam/Owin.Security.Providers.Steam.csproj

@@ -46,9 +46,8 @@
       <HintPath>..\..\packages\Owin.1.0\lib\net40\Owin.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Owin.Security.Providers.OpenIDBase, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="Owin.Security.Providers.OpenIDBase, Version=2.0.0.0, Culture=neutral, PublicKeyToken=1328b8c16b108c43, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Owin.Security.Providers.OpenIDBase.2.1\lib\net45\Owin.Security.Providers.OpenIDBase.dll</HintPath>
+      <HintPath>..\..\packages\Owin.Security.Providers.OpenIDBase.2.1.1\lib\net45\Owin.Security.Providers.OpenIDBase.dll</HintPath>
-      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />

src/Owin.Security.Providers.Steam/packages.config

@@ -4,5 +4,5 @@
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="8.0.3" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />
-  <package id="Owin.Security.Providers.OpenIDBase" version="2.1" targetFramework="net45" />
+  <package id="Owin.Security.Providers.OpenIDBase" version="2.1.1" targetFramework="net45" />
 </packages>

src/Owin.Security.Providers.Twitch/TwitchAuthenticationHandler.cs

@@ -179,6 +179,7 @@ namespace Owin.Security.Providers.Twitch
                 "?client_id=" + Uri.EscapeDataString(Options.ClientId) +
                 "&redirect_uri=" + Uri.EscapeDataString(redirectUri) +
                 "&scope=" + Uri.EscapeDataString(scope) +
+                "&force_verify=" + Options.ForceVerify.ToString().ToLower() +
                 "&response_type=" + "code" +
                 "&state=" + Uri.EscapeDataString(state);
 

src/Owin.Security.Providers.Twitch/TwitchAuthenticationOptions.cs

@@ -120,6 +120,11 @@ namespace Owin.Security.Providers.Twitch
         /// </summary>
         public ISecureDataFormat<AuthenticationProperties> StateDataFormat { get; set; }
 
+        /// <summary>
+        ///     Gets or sets whether to force verify the user during the OAuth flow
+        /// </summary>
+        public bool ForceVerify { get; set; }
+
         /// <summary>
         ///     Initializes a new <see cref="TwitchAuthenticationOptions" />
         /// </summary>

src/Owin.Security.Providers.Wargaming/Owin.Security.Providers.Wargaming.csproj

@@ -46,9 +46,8 @@
       <HintPath>..\..\packages\Owin.1.0\lib\net40\Owin.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Owin.Security.Providers.OpenIDBase, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="Owin.Security.Providers.OpenIDBase, Version=2.0.0.0, Culture=neutral, PublicKeyToken=1328b8c16b108c43, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Owin.Security.Providers.OpenIDBase.2.1\lib\net45\Owin.Security.Providers.OpenIDBase.dll</HintPath>
+      <HintPath>..\..\packages\Owin.Security.Providers.OpenIDBase.2.1.1\lib\net45\Owin.Security.Providers.OpenIDBase.dll</HintPath>
-      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />

src/Owin.Security.Providers.Wargaming/packages.config

@@ -4,5 +4,5 @@
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="8.0.3" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />
-  <package id="Owin.Security.Providers.OpenIDBase" version="2.1" targetFramework="net45" />
+  <package id="Owin.Security.Providers.OpenIDBase" version="2.1.1" targetFramework="net45" />
 </packages>