├── test
    └── PeerJsServer.Demo
    │   ├── Pages
    │       ├── _ViewStart.cshtml
    │       ├── _ViewImports.cshtml
    │       ├── Index.cshtml.cs
    │       ├── Index.cshtml
    │       └── Shared
    │       │   └── _Layout.cshtml
    │   ├── wwwroot
    │       ├── favicon.ico
    │       ├── lib
    │       │   ├── bootstrap
    │       │   │   ├── LICENSE
    │       │   │   └── dist
    │       │   │   │   ├── css
    │       │   │   │       ├── bootstrap-reboot.min.css
    │       │   │   │       ├── bootstrap-reboot.css
    │       │   │   │       ├── bootstrap-reboot.min.css.map
    │       │   │   │       └── bootstrap-grid.min.css
    │       │   │   │   └── js
    │       │   │   │       └── bootstrap.min.js
    │       │   └── jquery
    │       │   │   └── LICENSE.txt
    │       ├── css
    │       │   └── site.css
    │       └── js
    │       │   └── site.js
    │   ├── appsettings.Development.json
    │   ├── appsettings.json
    │   ├── PeerJsServer.Demo.csproj
    │   ├── Properties
    │       └── launchSettings.json
    │   ├── Program.cs
    │   └── Startup.cs
├── src
    └── PeerJsServer
    │   ├── Middleware
    │       ├── ServiceCollectionExtensions.cs
    │       ├── MiddlewareExtensions.cs
    │       └── PeerJsMiddleware.cs
    │   ├── PeerJsServer.csproj
    │   ├── Models
    │       ├── ClientCredentials.cs
    │       ├── Message.cs
    │       ├── MessageQueue.cs
    │       ├── Client.cs
    │       └── Realm.cs
    │   ├── Helpers
    │       └── WebSocketExtensions.cs
    │   ├── Enums.cs
    │   ├── BackgroundTasks
    │       ├── ZombieConnectionsBackgroundTask.cs
    │       ├── TimedBackgroundTask.cs
    │       └── ExpiredMessagesBackgroundTask.cs
    │   └── PeerJsServer.cs
├── LICENSE
├── README.md
├── PeerJsServer.sln
└── .gitignore


/test/PeerJsServer.Demo/Pages/_ViewStart.cshtml:
--------------------------------------------------------------------------------
1 | @{
2 |     Layout = "_Layout";
3 | }
4 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/cristipufu/peerjs-server-net/HEAD/test/PeerJsServer.Demo/wwwroot/favicon.ico


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Pages/_ViewImports.cshtml:
--------------------------------------------------------------------------------
1 | @using PeerJsServer.Demo
2 | @namespace PeerJsServer.Demo.Pages
3 | @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
4 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/appsettings.Development.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "Logging": {
 3 |     "LogLevel": {
 4 |       "Default": "Information",
 5 |       "Microsoft": "Warning",
 6 |       "Microsoft.Hosting.Lifetime": "Information"
 7 |     }
 8 |   }
 9 | }
10 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/appsettings.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "Logging": {
 3 |     "LogLevel": {
 4 |       "Default": "Information",
 5 |       "Microsoft": "Warning",
 6 |       "Microsoft.Hosting.Lifetime": "Information"
 7 |     }
 8 |   },
 9 |   "AllowedHosts": "*"
10 | }
11 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/PeerJsServer.Demo.csproj:
--------------------------------------------------------------------------------
 1 | <Project Sdk="Microsoft.NET.Sdk.Web">
 2 | 
 3 |   <PropertyGroup>
 4 |     <TargetFramework>net6.0</TargetFramework>
 5 |   </PropertyGroup>
 6 | 
 7 |   <ItemGroup>
 8 |     <ProjectReference Include="..\..\src\PeerJsServer\PeerJsServer.csproj" />
 9 |   </ItemGroup>
10 | 
11 | </Project>
12 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Properties/launchSettings.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "profiles": {
 3 |     "PeerJsServer.Demo": {
 4 |       "commandName": "Project",
 5 |       "launchBrowser": true,
 6 |       "applicationUrl": "https://localhost:5001;http://localhost:5000",
 7 |       "environmentVariables": {
 8 |         "ASPNETCORE_ENVIRONMENT": "Development"
 9 |       }
10 |     }
11 |   }
12 | }
13 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Pages/Index.cshtml.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.AspNetCore.Mvc.RazorPages;
 2 | using Microsoft.Extensions.Logging;
 3 | 
 4 | namespace PeerJsServer.Demo.Pages
 5 | {
 6 |     public class IndexModel : PageModel
 7 |     {
 8 |         private readonly ILogger<IndexModel> _logger;
 9 | 
10 |         public IndexModel(ILogger<IndexModel> logger)
11 |         {
12 |             _logger = logger;
13 |         }
14 | 
15 |         public void OnGet()
16 |         {
17 | 
18 |         }
19 |     }
20 | }
21 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Middleware/ServiceCollectionExtensions.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.Extensions.DependencyInjection;
 2 | using PeerJs;
 3 | 
 4 | namespace Microsoft.AspNetCore.Builder
 5 | {
 6 |     public static class ServiceCollectionExtensions
 7 |     {
 8 |         public static void AddPeerJsServer(this IServiceCollection services)
 9 |         {
10 |             services.AddSingleton<IPeerJsServer, PeerJsServer>();
11 |             services.AddHostedService<ZombieConnectionsBackgroundTask>();
12 |             services.AddHostedService<ExpiredMessagesBackgroundTask>();
13 |         }
14 |     }
15 | }


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Program.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.AspNetCore.Hosting;
 2 | using Microsoft.Extensions.Hosting;
 3 | 
 4 | namespace PeerJsServer.Demo
 5 | {
 6 |     public class Program
 7 |     {
 8 |         public static void Main(string[] args)
 9 |         {
10 |             CreateHostBuilder(args).Build().Run();
11 |         }
12 | 
13 |         public static IHostBuilder CreateHostBuilder(string[] args) =>
14 |             Host.CreateDefaultBuilder(args)
15 |                 .ConfigureWebHostDefaults(webBuilder =>
16 |                 {
17 |                     webBuilder.UseStartup<Startup>();
18 |                 });
19 |     }
20 | }
21 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Middleware/MiddlewareExtensions.cs:
--------------------------------------------------------------------------------
 1 | using PeerJs;
 2 | using System;
 3 | 
 4 | namespace Microsoft.AspNetCore.Builder
 5 | {
 6 |     public static class MiddlewareExtensions
 7 |     {
 8 |         public static IApplicationBuilder UsePeerJsServer(this IApplicationBuilder builder)
 9 |         {
10 |             var webSocketOptions = new WebSocketOptions()
11 |             {
12 |                 KeepAliveInterval = TimeSpan.FromSeconds(120),
13 |                 ReceiveBufferSize = 16 * 1024,
14 |             };
15 | 
16 |             builder.UseWebSockets(webSocketOptions);
17 | 
18 |             return builder
19 |                 .UseWebSockets(webSocketOptions)
20 |                 .UseMiddleware<PeerJsMiddleware>();
21 |         }
22 |     }
23 | }
24 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/PeerJsServer.csproj:
--------------------------------------------------------------------------------
 1 | <Project Sdk="Microsoft.NET.Sdk">
 2 | 
 3 |   <PropertyGroup>
 4 |     <TargetFramework>net6.0</TargetFramework>
 5 |     <LangVersion>8.0</LangVersion>
 6 |     <OutputType>Library</OutputType>
 7 |     <Authors>Cristi Pufu</Authors>
 8 |     <RootNamespace>PeerJs</RootNamespace>
 9 |   </PropertyGroup>
10 | 
11 |   <ItemGroup>
12 |     <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.2.0" />
13 |     <PackageReference Include="Microsoft.AspNetCore.WebSockets" Version="2.2.1" />
14 |     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="6.0.0" />
15 |     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.1" />
16 |     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
17 |   </ItemGroup>
18 | 
19 | </Project>
20 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Models/ClientCredentials.cs:
--------------------------------------------------------------------------------
 1 | namespace PeerJs
 2 | {
 3 |     public interface IClientCredentals
 4 |     {
 5 |         string ClientId { get; }
 6 | 
 7 |         string Token { get; }
 8 | 
 9 |         string Key { get; }
10 | 
11 |         bool Valid { get; }
12 |     }
13 | 
14 |     public class ClientCredentials : IClientCredentals
15 |     {
16 |         public ClientCredentials(string clientId, string token, string key)
17 |         {
18 |             ClientId = clientId;
19 |             Token = token;
20 |             Key = key;
21 |         }
22 | 
23 |         public string ClientId { get; }
24 | 
25 |         public string Token { get; }
26 | 
27 |         public string Key { get; }
28 | 
29 |         public bool Valid =>
30 |             !string.IsNullOrEmpty(ClientId) &&
31 |             !string.IsNullOrEmpty(Token) &&
32 |             !string.IsNullOrEmpty(Key);
33 |     }
34 | }
35 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Models/Message.cs:
--------------------------------------------------------------------------------
 1 | using Newtonsoft.Json;
 2 | 
 3 | namespace PeerJs
 4 | {
 5 |     public class Message
 6 |     {
 7 |         [JsonProperty("type")]
 8 |         public string Type { get; set; }
 9 | 
10 |         [JsonProperty("src")]
11 |         public string Source { get; set; }
12 | 
13 |         [JsonProperty("dst")]
14 |         public string Destination { get; set; }
15 | 
16 |         [JsonProperty("payload")]
17 |         public dynamic Payload { get; set; }
18 | 
19 |         public static Message Error(string error)
20 |         {
21 |             return Create(MessageType.Error, error);
22 |         }
23 | 
24 |         public static Message Create(string type, string msg)
25 |         {
26 |             return new Message
27 |             {
28 |                 Type = type,
29 |                 Payload = new
30 |                 {
31 |                     msg,
32 |                 }
33 |             };
34 |         }
35 |     }
36 | }


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2020 Cristi Pufu
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/lib/bootstrap/LICENSE:
--------------------------------------------------------------------------------
 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2011-2018 Twitter, Inc.
 4 | Copyright (c) 2011-2018 The Bootstrap Authors
 5 | 
 6 | Permission is hereby granted, free of charge, to any person obtaining a copy
 7 | of this software and associated documentation files (the "Software"), to deal
 8 | in the Software without restriction, including without limitation the rights
 9 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 | copies of the Software, and to permit persons to whom the Software is
11 | furnished to do so, subject to the following conditions:
12 | 
13 | The above copyright notice and this permission notice shall be included in
14 | all copies or substantial portions of the Software.
15 | 
16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 | THE SOFTWARE.
23 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Pages/Index.cshtml:
--------------------------------------------------------------------------------
 1 | @page
 2 | @model IndexModel
 3 | @{
 4 |     ViewData["Title"] = "Home page";
 5 | }
 6 | 
 7 | <div class="text-center">
 8 |     <h1 class="display-4">Welcome <span id="myId"></span></h1>
 9 | </div>
10 | 
11 | <div class="container">
12 |     <div class="row">&nbsp;</div>
13 |     <div class="row">
14 |         <div class="col-xs-6 col-md-3">
15 |             <video id="myVideo" playsinline autoplay muted style="max-width: 100%;"></video>
16 |         </div>
17 |         <div class="col-xs-6 col-md-9">
18 |             <video id="peerVideo" playsinline autoplay style="max-width: 100%;"></video>
19 |         </div>
20 |     </div>
21 |     <div class="row">&nbsp;</div>
22 | </div>
23 | 
24 | <div class="container">
25 |     <form>
26 |         <div class="form-group row">
27 |             <div class="col-sm-12">
28 |                 <input type="text" class="form-control" id="peerInput" placeholder="Enter peer's Id here"/>
29 |             </div>
30 |         </div>
31 |         <button class="btn btn-success" id="callButton">
32 |             Call
33 |         </button>
34 |         <button class="btn btn-warning" id="hangupButton">
35 |             Hang Up
36 |         </button>
37 |     </form>
38 | </div>
39 | <div class="row">
40 |     <div class="col-12">
41 |     &nbsp;
42 |     </div>
43 | </div>
44 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Models/MessageQueue.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Collections.Concurrent;
 3 | using System.Collections.Generic;
 4 | 
 5 | namespace PeerJs
 6 | {
 7 |     public interface IMessageQueue
 8 |     {
 9 |         DateTime GetReadTimestamp();
10 | 
11 |         void Enqueue(Message msg);
12 | 
13 |         Message Dequeue();
14 | 
15 |         IEnumerable<Message> GetAll();
16 |     }
17 | 
18 |     public class MessageQueue : IMessageQueue
19 |     {
20 |         private readonly ConcurrentQueue<Message> _queue;
21 |         private DateTime _readTimestamp;
22 | 
23 |         public MessageQueue()
24 |         {
25 |             _readTimestamp = DateTime.UtcNow;
26 |             _queue = new ConcurrentQueue<Message>();
27 |         }
28 | 
29 |         public void Enqueue(Message msg)
30 |         {
31 |             _queue.Enqueue(msg);
32 |         }
33 | 
34 |         public Message Dequeue()
35 |         {
36 |             if (!_queue.TryDequeue(out var msg))
37 |             {
38 |                 return null;
39 |             }
40 | 
41 |             _readTimestamp = DateTime.UtcNow;
42 | 
43 |             return msg;
44 |         }
45 | 
46 |         public IEnumerable<Message> GetAll()
47 |         {
48 |             return _queue.ToArray();
49 |         }
50 | 
51 |         public DateTime GetReadTimestamp()
52 |         {
53 |             return _readTimestamp;
54 |         }
55 |     }
56 | }


--------------------------------------------------------------------------------
/src/PeerJsServer/Helpers/WebSocketExtensions.cs:
--------------------------------------------------------------------------------
 1 | using Newtonsoft.Json;
 2 | using System;
 3 | using System.Net.WebSockets;
 4 | using System.Text;
 5 | using System.Threading;
 6 | using System.Threading.Tasks;
 7 | 
 8 | namespace PeerJs
 9 | {
10 |     public static class WebSocketExtensions
11 |     {
12 |         public static Task SendMessageAsync(this WebSocket socket, Message msg, CancellationToken cancellationToken = default)
13 |         {
14 |             var value = new ArraySegment<byte>(GetSerializedMessage(msg));
15 | 
16 |             return socket.SendAsync(value, WebSocketMessageType.Text, true, cancellationToken);
17 |         }
18 | 
19 |         public static Task CloseAsync(this WebSocket socket, string description)
20 |         {
21 |             if (socket == null)
22 |             {
23 |                 return Task.CompletedTask;
24 |             }
25 | 
26 |             return socket.CloseAsync(WebSocketCloseStatus.Empty, description, CancellationToken.None);
27 |         }
28 | 
29 |         private static byte[] GetSerializedMessage(Message msg)
30 |         {
31 |             var serialized = JsonConvert.SerializeObject(msg,
32 |                 Formatting.None,
33 |                 new JsonSerializerSettings
34 |                 {
35 |                     NullValueHandling = NullValueHandling.Ignore,
36 |                 });
37 | 
38 |             return Encoding.UTF8.GetBytes(serialized);
39 |         }
40 |     }
41 | }


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Pages/Shared/_Layout.cshtml:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 | <head>
 4 |     <meta charset="utf-8" />
 5 |     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 6 |     <title>@ViewData["Title"] - PeerJsServer.Demo</title>
 7 |     <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
 8 |     <link rel="stylesheet" href="~/css/site.css" />
 9 | </head>
10 | <body>
11 |     <header>
12 |         <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
13 |             <div class="container">
14 |                 <a class="navbar-brand" asp-area="" asp-page="/Index">PeerJsServer.Demo</a>
15 |             </div>
16 |         </nav>
17 |     </header>
18 |     <div class="container">
19 |         <main role="main" class="pb-3">
20 |             @RenderBody()
21 |         </main>
22 |     </div>
23 | 
24 |     <footer class="border-top footer text-muted">
25 |         <div class="container">
26 |             &copy; 2020 - PeerJsServer.Demo
27 |         </div>
28 |     </footer>
29 | 
30 |     <script src="~/lib/jquery/dist/jquery.min.js"></script>
31 |     <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
32 | 
33 |     <!-- PeerJs CDN-->
34 |     <script src="https://unpkg.com/peerjs@1.0.0/dist/peerjs.min.js"></script>
35 | 
36 |     <script src="~/js/site.js" asp-append-version="true"></script>
37 | 
38 |     @RenderSection("Scripts", required: false)
39 | </body>
40 | </html>
41 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Enums.cs:
--------------------------------------------------------------------------------
 1 | namespace PeerJs
 2 | {
 3 |     public static class Errors
 4 |     {
 5 |         public const string InvalidKey = "Invalid key provided";
 6 |         public const string InvalidToken = "Invalid token provided";
 7 |         public const string InvalidWsParameters = "No id, token, or key supplied to websocket server";
 8 |         public const string ConnectionLimitExceeded = "Server has reached its concurrent user limit";
 9 |     }
10 | 
11 |     public static class MessageType
12 |     {
13 |         public const string Heartbeat = "HEARTBEAT";
14 |         public const string Candidate = "CANDIDATE";
15 |         public const string Offer = "OFFER";
16 |         public const string Answer = "ANSWER";
17 |         public const string Open = "OPEN"; // The connection to the server is open.
18 |         public const string Error = "ERROR"; // Server error.
19 |         public const string IdTaken = "ID-TAKEN"; // The selected ID is taken.
20 |         public const string InvalidKey = "INVALID-KEY"; // The given API key cannot be found.
21 |         public const string Leave = "LEAVE"; // Another peer has closed its connection to this peer.
22 |         public const string Expire = "EXPIRE"; // The offer sent to a peer has expired without response.
23 |         public const string IsAvailable = "IS_AVAILABLE"; // Request the availability for a specified peer
24 | 
25 |         public static bool ShouldQueue(this Message message)
26 |         {
27 |             return message.Type != Leave && message.Type != Expire && !string.IsNullOrEmpty(message.Destination);
28 |         }
29 |     }
30 | }
31 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/Startup.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.AspNetCore.Builder;
 2 | using Microsoft.AspNetCore.Hosting;
 3 | using Microsoft.Extensions.Configuration;
 4 | using Microsoft.Extensions.DependencyInjection;
 5 | using Microsoft.Extensions.Hosting;
 6 | 
 7 | namespace PeerJsServer.Demo
 8 | {
 9 |     public class Startup
10 |     {
11 |         public Startup(IConfiguration configuration)
12 |         {
13 |             Configuration = configuration;
14 |         }
15 | 
16 |         public IConfiguration Configuration { get; }
17 | 
18 |         public void ConfigureServices(IServiceCollection services)
19 |         {
20 |             services.AddRazorPages();
21 | 
22 |             // register PeerJs Server dependencies
23 |             services.AddPeerJsServer();
24 |         }
25 | 
26 |         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
27 |         {
28 |             if (env.IsDevelopment())
29 |             {
30 |                 app.UseDeveloperExceptionPage();
31 |             }
32 |             else
33 |             {
34 |                 app.UseExceptionHandler("/Error");
35 |                 app.UseHsts();
36 |             }
37 | 
38 |             app.UseHttpsRedirection();
39 |             app.UseStaticFiles();
40 | 
41 |             app.UseRouting();
42 | 
43 |             app.UseAuthorization();
44 | 
45 |             app.UseEndpoints(endpoints =>
46 |             {
47 |                 endpoints.MapRazorPages();
48 |             });
49 | 
50 |             // enable PeerJs Server middleware
51 |             app.UsePeerJsServer();
52 |         }
53 |     }
54 | }
55 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/css/site.css:
--------------------------------------------------------------------------------
 1 | /* Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
 2 | for details on configuring this project to bundle and minify static web assets. */
 3 | 
 4 | a.navbar-brand {
 5 |   white-space: normal;
 6 |   text-align: center;
 7 |   word-break: break-all;
 8 | }
 9 | 
10 | /* Provide sufficient contrast against white background */
11 | a {
12 |   color: #0366d6;
13 | }
14 | 
15 | .btn-primary {
16 |   color: #fff;
17 |   background-color: #1b6ec2;
18 |   border-color: #1861ac;
19 | }
20 | 
21 | .nav-pills .nav-link.active, .nav-pills .show > .nav-link {
22 |   color: #fff;
23 |   background-color: #1b6ec2;
24 |   border-color: #1861ac;
25 | }
26 | 
27 | /* Sticky footer styles
28 | -------------------------------------------------- */
29 | html {
30 |   font-size: 14px;
31 | }
32 | @media (min-width: 768px) {
33 |   html {
34 |     font-size: 16px;
35 |   }
36 | }
37 | 
38 | .border-top {
39 |   border-top: 1px solid #e5e5e5;
40 | }
41 | .border-bottom {
42 |   border-bottom: 1px solid #e5e5e5;
43 | }
44 | 
45 | .box-shadow {
46 |   box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
47 | }
48 | 
49 | button.accept-policy {
50 |   font-size: 1rem;
51 |   line-height: inherit;
52 | }
53 | 
54 | /* Sticky footer styles
55 | -------------------------------------------------- */
56 | html {
57 |   position: relative;
58 |   min-height: 100%;
59 | }
60 | 
61 | body {
62 |   /* Margin bottom by footer height */
63 |   margin-bottom: 60px;
64 | }
65 | .footer {
66 |   position: absolute;
67 |   bottom: 0;
68 |   width: 100%;
69 |   white-space: nowrap;
70 |   line-height: 60px; /* Vertically center the text there */
71 | }
72 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/lib/jquery/LICENSE.txt:
--------------------------------------------------------------------------------
 1 | Copyright JS Foundation and other contributors, https://js.foundation/
 2 | 
 3 | This software consists of voluntary contributions made by many
 4 | individuals. For exact contribution history, see the revision history
 5 | available at https://github.com/jquery/jquery
 6 | 
 7 | The following license applies to all parts of this software except as
 8 | documented below:
 9 | 
10 | ====
11 | 
12 | Permission is hereby granted, free of charge, to any person obtaining
13 | a copy of this software and associated documentation files (the
14 | "Software"), to deal in the Software without restriction, including
15 | without limitation the rights to use, copy, modify, merge, publish,
16 | distribute, sublicense, and/or sell copies of the Software, and to
17 | permit persons to whom the Software is furnished to do so, subject to
18 | the following conditions:
19 | 
20 | The above copyright notice and this permission notice shall be
21 | included in all copies or substantial portions of the Software.
22 | 
23 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 | LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 | WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 | 
31 | ====
32 | 
33 | All files located in the node_modules and external directories are
34 | externally maintained libraries used by this software which have their
35 | own licenses; we recommend you read them, as their terms may differ from
36 | the terms above.
37 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/Models/Client.cs:
--------------------------------------------------------------------------------
 1 | using System;
 2 | using System.Net.WebSockets;
 3 | using System.Threading;
 4 | using System.Threading.Tasks;
 5 | 
 6 | namespace PeerJs
 7 | {
 8 |     public interface IClient
 9 |     {
10 |         string GetId();
11 | 
12 |         string GetToken();
13 | 
14 |         WebSocket GetSocket();
15 | 
16 |         void SetSocket(WebSocket socket);
17 | 
18 |         DateTime GetLastHeartbeat();
19 | 
20 |         void SetLastHeartbeat(DateTime reportingTime);
21 | 
22 |         Task SendAsync(Message msg, CancellationToken cancellationToken = default);
23 |     }
24 | 
25 |     public class Client : IClient
26 |     {
27 |         private readonly IClientCredentals _credentials;
28 | 
29 |         private WebSocket _socket;
30 |         private DateTime _reportingTime;
31 | 
32 |         public Client(IClientCredentals credentials, WebSocket socket)
33 |         {
34 |             _credentials = credentials;
35 |             _socket = socket;
36 |             _reportingTime = DateTime.UtcNow;
37 |         }
38 | 
39 |         public string GetId()
40 |         {
41 |             return _credentials.ClientId;
42 |         }
43 | 
44 |         public string GetToken()
45 |         {
46 |             return _credentials.Token;
47 |         }
48 | 
49 |         public WebSocket GetSocket()
50 |         {
51 |             return _socket;
52 |         }
53 | 
54 |         public void SetSocket(WebSocket socket)
55 |         {
56 |             _socket = socket;
57 |         }
58 | 
59 |         public DateTime GetLastHeartbeat()
60 |         {
61 |             return _reportingTime;
62 |         }
63 | 
64 |         public void SetLastHeartbeat(DateTime reportingTime)
65 |         {
66 |             _reportingTime = reportingTime;
67 |         }
68 | 
69 |         public Task SendAsync(Message msg, CancellationToken cancellationToken = default)
70 |         {
71 |             if (_socket == null)
72 |             {
73 |                 throw new Exception("Invalid client socket!");
74 |             }
75 | 
76 |             return _socket.SendMessageAsync(msg, cancellationToken);
77 |         }
78 |     }
79 | }
80 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # peerjs-server.net
 2 | 
 3 | ASP.NET Core Server for the [PeerJS library](https://peerjs.com/) which simplifies peer-to-peer data, video, and audio calls.
 4 | 
 5 | To broker connections, PeerJS connects to a PeerServer. Note that no peer-to-peer data goes through the server; The server acts only as a connection broker.
 6 | 
 7 | This is an ASP.NET Core port of the [Node.js implementation](https://github.com/peers/peerjs-server).
 8 | 
 9 | ## Server setup
10 | 
11 | ```C#
12 | public void ConfigureServices(IServiceCollection services)
13 | {
14 |     ...
15 |     // register PeerJs Server dependencies
16 |     services.AddPeerJsServer();
17 | }
18 | 
19 | public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
20 | {
21 |     ...
22 |     // enable PeerJs Server middleware
23 |     app.UsePeerJsServer();        
24 | }
25 | ```
26 | 
27 | That's it, we're good to go.
28 | 
29 | ## Client library setup
30 | 
31 | The repository also contains a demo project.
32 | 
33 | However, we can read more about the library usage on the [official website](https://peerjs.com/docs.html). Here's a quick sample:
34 | 
35 | Add the PeerJS client library to your webpage:
36 | ```html
37 | <script src="https://unpkg.com/peerjs@1.0.0/dist/peerjs.min.js"></script>
38 | ```
39 | 
40 | Create the Peer object:
41 | ```js
42 | const peer = new Peer(randomId, {
43 |     host: 'localhost',
44 |     port: 44329,
45 |     path: '/'
46 | });
47 | ```
48 | 
49 | Start a call:
50 | ```js
51 | // Call a peer, providing our mediaStream
52 | navigator.mediaDevices
53 |     .getUserMedia({
54 |         audio: true,
55 |         video: true
56 |     })
57 |     .then(function (mediaStream) {
58 |         myVideo.srcObject = mediaStream;
59 |         // Call a peer, providing our mediaStream
60 |         var call = peer.call('dest-peer-id', mediaStream);
61 |     });
62 | ```
63 | 
64 | Answer call:
65 | ```js
66 | peer.on('call', function(call) {
67 |   // Answer the call, providing our mediaStream
68 |   call.answer(mediaStream);
69 | });
70 | ```
71 | 
72 | Use the stream:
73 | ```js
74 | call.on('stream', function(stream) {
75 |   // `stream` is the MediaStream of the remote peer.
76 |   // Here you'd add it to an HTML video/canvas element.
77 | });
78 | ```
79 | 


--------------------------------------------------------------------------------
/PeerJsServer.sln:
--------------------------------------------------------------------------------
 1 | 
 2 | Microsoft Visual Studio Solution File, Format Version 12.00
 3 | # Visual Studio Version 16
 4 | VisualStudioVersion = 16.0.29920.165
 5 | MinimumVisualStudioVersion = 10.0.40219.1
 6 | Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PeerJsServer", "src\PeerJsServer\PeerJsServer.csproj", "{C5F7EA2E-06AA-4CE4-8D4B-3F530242FE2A}"
 7 | EndProject
 8 | Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{8FDF8AC1-17FA-47B1-B7EF-7A5686C2C9D3}"
 9 | EndProject
10 | Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "test", "test", "{0D0CAF74-A950-41E3-9BB4-33E60DAFEB62}"
11 | EndProject
12 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PeerJsServer.Demo", "test\PeerJsServer.Demo\PeerJsServer.Demo.csproj", "{268519C1-161E-41B6-A46F-DAAD393226CF}"
13 | EndProject
14 | Global
15 | 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
16 | 		Debug|Any CPU = Debug|Any CPU
17 | 		Release|Any CPU = Release|Any CPU
18 | 	EndGlobalSection
19 | 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
20 | 		{C5F7EA2E-06AA-4CE4-8D4B-3F530242FE2A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
21 | 		{C5F7EA2E-06AA-4CE4-8D4B-3F530242FE2A}.Debug|Any CPU.Build.0 = Debug|Any CPU
22 | 		{C5F7EA2E-06AA-4CE4-8D4B-3F530242FE2A}.Release|Any CPU.ActiveCfg = Release|Any CPU
23 | 		{C5F7EA2E-06AA-4CE4-8D4B-3F530242FE2A}.Release|Any CPU.Build.0 = Release|Any CPU
24 | 		{268519C1-161E-41B6-A46F-DAAD393226CF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
25 | 		{268519C1-161E-41B6-A46F-DAAD393226CF}.Debug|Any CPU.Build.0 = Debug|Any CPU
26 | 		{268519C1-161E-41B6-A46F-DAAD393226CF}.Release|Any CPU.ActiveCfg = Release|Any CPU
27 | 		{268519C1-161E-41B6-A46F-DAAD393226CF}.Release|Any CPU.Build.0 = Release|Any CPU
28 | 	EndGlobalSection
29 | 	GlobalSection(SolutionProperties) = preSolution
30 | 		HideSolutionNode = FALSE
31 | 	EndGlobalSection
32 | 	GlobalSection(NestedProjects) = preSolution
33 | 		{C5F7EA2E-06AA-4CE4-8D4B-3F530242FE2A} = {8FDF8AC1-17FA-47B1-B7EF-7A5686C2C9D3}
34 | 		{268519C1-161E-41B6-A46F-DAAD393226CF} = {0D0CAF74-A950-41E3-9BB4-33E60DAFEB62}
35 | 	EndGlobalSection
36 | 	GlobalSection(ExtensibilityGlobals) = postSolution
37 | 		SolutionGuid = {C700E28E-66F2-46D8-A7E8-7E0EB1A42EA8}
38 | 	EndGlobalSection
39 | EndGlobal
40 | 


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/js/site.js:
--------------------------------------------------------------------------------
 1 | "use strict";
 2 | 
 3 | const peerVideo = document.querySelector('#peerVideo');
 4 | const myVideo = document.querySelector('#myVideo');
 5 | const myId = document.querySelector('#myId');
 6 | const peerId = document.querySelector('#peerId');
 7 | const peerInput = document.getElementById("peerInput");
 8 | const callBtn = document.getElementById("callButton");
 9 | 
10 | let randomId = Math.random().toString(36).substring(3);
11 | 
12 | const peer = new Peer(randomId, {
13 |     host: 'localhost',
14 |     port: 5001,
15 |     //host: 'myurlazurewebsites.net',
16 |     //port: 443,
17 |     path: '/'
18 | });
19 | 
20 | peer.on('open', function (id) {
21 | 
22 |     console.log('My peer ID is: ' + id);
23 | 
24 |     myId.innerText = id;
25 | 
26 | });
27 | 
28 | peer.on('call', function (mediaConnection) {
29 | 
30 |     navigator.mediaDevices
31 |         .getUserMedia({
32 |             audio: true,
33 |             video: true
34 |         })
35 |         .then(function (mediaStream) {
36 | 
37 |             myVideo.srcObject = mediaStream;
38 | 
39 |             // Answer the call, providing our mediaStream
40 |             mediaConnection.answer(mediaStream);
41 | 
42 |             mediaConnection.on('stream', function (stream) {
43 |                 // `stream` is the MediaStream of the remote peer.
44 |                 // Here you'd add it to an HTML video/canvas element.
45 |                 peerVideo.srcObject = stream;
46 |             });
47 |         });
48 | });
49 | 
50 | 
51 | callBtn.addEventListener("click", function (event) {
52 |     var user = peerInput.value;
53 | 
54 |     navigator.mediaDevices
55 |         .getUserMedia({
56 |             audio: true,
57 |             video: true
58 |         })
59 |         .then(function (mediaStream) {
60 | 
61 |             myVideo.srcObject = mediaStream;
62 | 
63 |             // Call a peer, providing our mediaStream
64 |             var call = peer.call(user, mediaStream);
65 | 
66 |             call.on('stream', function (stream) {
67 |                 // `stream` is the MediaStream of the remote peer.
68 |                 // Here you'd add it to an HTML video/canvas element.
69 |                 peerVideo.srcObject = stream;
70 |             });
71 | 
72 |         });
73 | 
74 |     event.preventDefault();
75 | });


--------------------------------------------------------------------------------
/src/PeerJsServer/BackgroundTasks/ZombieConnectionsBackgroundTask.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.Extensions.DependencyInjection;
 2 | using Microsoft.Extensions.Logging;
 3 | using System;
 4 | using System.Threading;
 5 | using System.Threading.Tasks;
 6 | 
 7 | namespace PeerJs
 8 | {
 9 |     public class ZombieConnectionsBackgroundTask : TimedBackgroundTask
10 |     {
11 |         private readonly ILogger<ExpiredMessagesBackgroundTask> _logger;
12 |         private const int DefaultCheckInterval = 300;
13 | 
14 |         public ZombieConnectionsBackgroundTask(
15 |             IServiceProvider services,
16 |             ILogger<ExpiredMessagesBackgroundTask> logger)
17 |             : base(services, TimeSpan.FromSeconds(DefaultCheckInterval))
18 |         {
19 |             _logger = logger;
20 |         }
21 | 
22 |         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
23 |         {
24 |             using var scope = Services.CreateScope();
25 |             var server = scope.ServiceProvider.GetRequiredService<IPeerJsServer>();
26 | 
27 |             var realms = server.GetRealms();
28 | 
29 |             foreach (var realm in realms)
30 |             {
31 |                 await PruneZombieConnectionsAsync(realm.Value);
32 |             }
33 |         }
34 | 
35 |         private async Task PruneZombieConnectionsAsync(IRealm realm)
36 |         {
37 |             var clientIds = realm.GetClientIds();
38 | 
39 |             var now = DateTime.UtcNow;
40 |             var aliveTimeout = TimeSpan.FromSeconds(60);
41 | 
42 |             var count = 0;
43 | 
44 |             foreach (var clientId in clientIds)
45 |             {
46 |                 var client = realm.GetClient(clientId);
47 |                 var timeSinceLastHeartbeat = now - client.GetLastHeartbeat();
48 | 
49 |                 if (timeSinceLastHeartbeat < aliveTimeout)
50 |                 {
51 |                     continue;
52 |                 }
53 | 
54 |                 var socket = client.GetSocket();
55 | 
56 |                 try
57 |                 {
58 |                     await socket?.CloseAsync($"Zombie connection, time since last heartbeat: {timeSinceLastHeartbeat.TotalSeconds}s");
59 |                 }
60 |                 finally
61 |                 {
62 |                     realm.ClearMessageQueue(clientId);
63 |                     realm.RemoveClientById(clientId);
64 | 
65 |                     socket?.Dispose();
66 |                 }
67 | 
68 |                 count++;
69 |             }
70 | 
71 |             _logger.LogInformation("Pruned zombie connections for {} peers.", count);
72 |         }
73 |     }
74 | }
75 | 


--------------------------------------------------------------------------------
/src/PeerJsServer/BackgroundTasks/TimedBackgroundTask.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.Extensions.Hosting;
 2 | using System;
 3 | using System.Threading;
 4 | using System.Threading.Tasks;
 5 | 
 6 | namespace PeerJs
 7 | {
 8 |     public abstract class TimedBackgroundTask : IHostedService, IDisposable
 9 |     {
10 |         private Timer _timer;
11 |         private readonly TimeSpan _interval;
12 |         private Task _executingTask;
13 |         private readonly CancellationTokenSource _stoppingCts = new CancellationTokenSource();
14 | 
15 |         protected readonly IServiceProvider Services;
16 | 
17 |         public TimedBackgroundTask(IServiceProvider services, TimeSpan interval)
18 |         {
19 |             Services = services;
20 |             _interval = interval;
21 |         }
22 | 
23 |         public Task StartAsync(CancellationToken cancellationToken)
24 |         {
25 |             _timer = new Timer(ExecuteTask, null, _interval, TimeSpan.FromMilliseconds(-1));
26 | 
27 |             return Task.CompletedTask;
28 |         }
29 | 
30 |         private void ExecuteTask(object state)
31 |         {
32 |             _timer?.Change(Timeout.Infinite, 0);
33 | 
34 |             _executingTask = ExecuteTaskAsync(_stoppingCts.Token);
35 |         }
36 | 
37 |         private async Task ExecuteTaskAsync(CancellationToken stoppingToken)
38 |         {
39 |             await ExecuteAsync(stoppingToken);
40 | 
41 |             _timer.Change(TimeSpan.FromSeconds(30), TimeSpan.FromMilliseconds(-1));
42 |         }
43 | 
44 |         protected abstract Task ExecuteAsync(CancellationToken stoppingToken);
45 | 
46 |         public virtual async Task StopAsync(CancellationToken cancellationToken)
47 |         {
48 |             _timer?.Change(Timeout.Infinite, 0);
49 | 
50 |             // Stop called without start
51 |             if (_executingTask == null)
52 |             {
53 |                 return;
54 |             }
55 | 
56 |             try
57 |             {
58 |                 // Signal cancellation to the executing method
59 |                 _stoppingCts.Cancel();
60 |             }
61 |             finally
62 |             {
63 |                 // Wait until the task completes or the stop token triggers
64 |                 await Task.WhenAny(_executingTask, Task.Delay(Timeout.Infinite, cancellationToken));
65 |             }
66 | 
67 |         }
68 | 
69 |         public void Dispose()
70 |         {
71 |             Dispose(true);
72 |             GC.SuppressFinalize(this);
73 |         }
74 | 
75 |         protected virtual void Dispose(bool disposing)
76 |         {
77 |             if (disposing)
78 |             {
79 |                 _stoppingCts.Cancel();
80 |                 _timer?.Dispose();
81 |             }
82 |         }
83 |     }
84 | }


--------------------------------------------------------------------------------
/src/PeerJsServer/Middleware/PeerJsMiddleware.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.AspNetCore.Http;
 2 | using Microsoft.Extensions.Logging;
 3 | using System;
 4 | using System.Net.WebSockets;
 5 | using System.Threading.Tasks;
 6 | 
 7 | namespace PeerJs
 8 | {
 9 |     public class PeerJsMiddleware
10 |     {
11 |         private readonly ILogger<PeerJsMiddleware> _logger;
12 |         private readonly RequestDelegate _next;
13 |         private readonly IPeerJsServer _webSocketServer;
14 | 
15 |         public PeerJsMiddleware(
16 |             RequestDelegate next,
17 |             IPeerJsServer webSocketServer,
18 |             ILogger<PeerJsMiddleware> logger)
19 |         {
20 |             _next = next;
21 |             _logger = logger;
22 |             _webSocketServer = webSocketServer;
23 |         }
24 | 
25 |         public async Task Invoke(HttpContext context)
26 |         {
27 |             var path = context.Request.Path.ToString();
28 | 
29 |             if (!path.Contains("/peerjs"))
30 |             {
31 |                 await _next.Invoke(context);
32 | 
33 |                 return;
34 |             }
35 | 
36 |             if (!context.WebSockets.IsWebSocketRequest)
37 |             {
38 |                 // TODO API: handle xhr requests
39 |                 context.Response.StatusCode = 200;
40 | 
41 |                 return;
42 |             }
43 | 
44 |             WebSocket socket = null;
45 | 
46 |             try
47 |             {
48 |                 var requestCompletedTcs = new TaskCompletionSource<object>();
49 | 
50 |                 socket = await context.WebSockets.AcceptWebSocketAsync();
51 | 
52 |                 var credentials = GetCredentials(context.Request.Query);
53 | 
54 |                 await _webSocketServer.RegisterClientAsync(credentials, socket, requestCompletedTcs, context.RequestAborted);
55 | 
56 |                 await requestCompletedTcs.Task;
57 |             }
58 |             catch (Exception ex)
59 |             {
60 |                 _logger.LogError(ex, "{}", ex.Message);
61 | 
62 |                 await socket.CloseAsync(ex.Message);
63 |             }
64 |             finally
65 |             {
66 |                 socket?.Dispose();
67 |             }
68 |         }
69 | 
70 |         private static IClientCredentals GetCredentials(IQueryCollection queryString)
71 |         {
72 |             return new ClientCredentials(
73 |                 clientId: GetQueryStringValue(queryString, "id"),
74 |                 token: GetQueryStringValue(queryString, "token"),
75 |                 key: GetQueryStringValue(queryString, "key"));
76 |         }
77 | 
78 |         private static string GetQueryStringValue(IQueryCollection queryString, string key)
79 |         {
80 |             return queryString.TryGetValue(key, out var value) ? value.ToString() : string.Empty;
81 |         }
82 |     }
83 | }


--------------------------------------------------------------------------------
/src/PeerJsServer/BackgroundTasks/ExpiredMessagesBackgroundTask.cs:
--------------------------------------------------------------------------------
 1 | using Microsoft.Extensions.DependencyInjection;
 2 | using Microsoft.Extensions.Logging;
 3 | using System;
 4 | using System.Collections.Generic;
 5 | using System.Threading;
 6 | using System.Threading.Tasks;
 7 | 
 8 | namespace PeerJs
 9 | {
10 |     public class ExpiredMessagesBackgroundTask : TimedBackgroundTask
11 |     {
12 |         private readonly ILogger<ExpiredMessagesBackgroundTask> _logger;
13 | 
14 |         public ExpiredMessagesBackgroundTask(
15 |             IServiceProvider services,
16 |             ILogger<ExpiredMessagesBackgroundTask> logger)
17 |             : base(services, TimeSpan.FromSeconds(2))
18 |         {
19 |             _logger = logger;
20 |         }
21 | 
22 |         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
23 |         {
24 |             using var scope = Services.CreateScope();
25 |             var server = scope.ServiceProvider.GetRequiredService<IPeerJsServer>();
26 | 
27 |             var realms = server.GetRealms();
28 | 
29 |             foreach (var realm in realms)
30 |             {
31 |                 await PruneExpiredMessagesAsync(realm.Value, stoppingToken);
32 |             }
33 |         }
34 | 
35 |         private async Task PruneExpiredMessagesAsync(IRealm realm, CancellationToken stoppingToken)
36 |         {
37 |             var clientIds = realm.GetClientIdsWithQueue();
38 | 
39 |             var now = DateTime.UtcNow;
40 |             var maxDiff = TimeSpan.FromSeconds(10);
41 | 
42 |             var seenMap = new Dictionary<string, bool>();
43 | 
44 |             foreach (var clientId in clientIds)
45 |             {
46 |                 var messageQueue = realm.GetMessageQueueById(clientId);
47 | 
48 |                 if (messageQueue == null)
49 |                 {
50 |                     continue;
51 |                 }
52 | 
53 |                 var lastReadDiff = now - messageQueue.GetReadTimestamp();
54 | 
55 |                 if (lastReadDiff < maxDiff)
56 |                 {
57 |                     continue;
58 |                 }
59 | 
60 |                 var messages = messageQueue.GetAll();
61 | 
62 |                 foreach (var message in messages)
63 |                 {
64 |                     var seenKey = $"{message.Source}_{message.Destination};";
65 | 
66 |                     if (!seenMap.TryGetValue(seenKey, out var seen) || !seen)
67 |                     {
68 |                         var sourceClient = realm.GetClient(message.Source);
69 | 
70 |                         await realm.HandleMessageAsync(sourceClient, Message.Create(MessageType.Expire, string.Empty), stoppingToken);
71 | 
72 |                         seenMap[seenKey] = true;
73 |                     }
74 |                 }
75 | 
76 |                 realm.ClearMessageQueue(clientId);
77 |             }
78 | 
79 |             _logger.LogInformation("Pruned expired messages for {} peers.", seenMap.Keys.Count);
80 |         }
81 |     }
82 | }


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.min.css:
--------------------------------------------------------------------------------
1 | /*!
2 |  * Bootstrap Reboot v4.3.1 (https://getbootstrap.com/)
3 |  * Copyright 2011-2019 The Bootstrap Authors
4 |  * Copyright 2011-2019 Twitter, Inc.
5 |  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
6 |  * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
7 |  */*,::after,::before{box-sizing:border-box}html{font-family:sans-serif;line-height:1.15;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}article,aside,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;text-align:left;background-color:#fff}[tabindex="-1"]:focus{outline:0!important}hr{box-sizing:content-box;height:0;overflow:visible}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem}p{margin-top:0;margin-bottom:1rem}abbr[data-original-title],abbr[title]{text-decoration:underline;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;border-bottom:0;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#007bff;text-decoration:none;background-color:transparent}a:hover{color:#0056b3;text-decoration:underline}a:not([href]):not([tabindex]){color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus,a:not([href]):not([tabindex]):hover{color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus{outline:0}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em}pre{margin-top:0;margin-bottom:1rem;overflow:auto}figure{margin:0 0 1rem}img{vertical-align:middle;border-style:none}svg{overflow:hidden;vertical-align:middle}table{border-collapse:collapse}caption{padding-top:.75rem;padding-bottom:.75rem;color:#6c757d;text-align:left;caption-side:bottom}th{text-align:inherit}label{display:inline-block;margin-bottom:.5rem}button{border-radius:0}button:focus{outline:1px dotted;outline:5px auto -webkit-focus-ring-color}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,input{overflow:visible}button,select{text-transform:none}select{word-wrap:normal}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{padding:0;border-style:none}input[type=checkbox],input[type=radio]{box-sizing:border-box;padding:0}input[type=date],input[type=datetime-local],input[type=month],input[type=time]{-webkit-appearance:listbox}textarea{overflow:auto;resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{display:block;width:100%;max-width:100%;padding:0;margin-bottom:.5rem;font-size:1.5rem;line-height:inherit;color:inherit;white-space:normal}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}summary{display:list-item;cursor:pointer}template{display:none}[hidden]{display:none!important}
8 | /*# sourceMappingURL=bootstrap-reboot.min.css.map */


--------------------------------------------------------------------------------
/src/PeerJsServer/PeerJsServer.cs:
--------------------------------------------------------------------------------
  1 | using Newtonsoft.Json;
  2 | using System;
  3 | using System.Collections.Concurrent;
  4 | using System.Collections.Generic;
  5 | using System.IO;
  6 | using System.Net.WebSockets;
  7 | using System.Text;
  8 | using System.Threading;
  9 | using System.Threading.Tasks;
 10 | 
 11 | namespace PeerJs
 12 | {
 13 |     public interface IPeerJsServer
 14 |     {
 15 |         IReadOnlyCollection<KeyValuePair<string, IRealm>> GetRealms();
 16 | 
 17 |         Task RegisterClientAsync(IClientCredentals credentials, WebSocket socket, TaskCompletionSource<object> requestCompletedTcs, CancellationToken cancellationToken = default);
 18 |     }
 19 | 
 20 |     public class PeerJsServer : IPeerJsServer
 21 |     {
 22 |         private readonly ConcurrentDictionary<string, IRealm> _world;
 23 | 
 24 |         public PeerJsServer()
 25 |         {
 26 |             _world = new ConcurrentDictionary<string, IRealm>();
 27 |         }
 28 | 
 29 |         public IReadOnlyCollection<KeyValuePair<string, IRealm>> GetRealms()
 30 |         {
 31 |             return _world;
 32 |         }
 33 | 
 34 |         public async Task RegisterClientAsync(IClientCredentals credentials, WebSocket socket, TaskCompletionSource<object> requestCompletedTcs, CancellationToken cancellationToken = default)
 35 |         {
 36 |             if (!credentials.Valid)
 37 |             {
 38 |                 await socket.SendMessageAsync(Message.Error(Errors.InvalidWsParameters), cancellationToken);
 39 | 
 40 |                 await socket.CloseAsync(Errors.InvalidWsParameters);
 41 | 
 42 |                 requestCompletedTcs.TrySetResult(null);
 43 | 
 44 |                 return;
 45 |             }
 46 | 
 47 |             if (!_world.TryGetValue(credentials.Key, out var realm))
 48 |             {
 49 |                 realm = new Realm();
 50 | 
 51 |                 _world.TryAdd(credentials.Key, realm);
 52 |             }
 53 | 
 54 |             var client = realm.GetClient(credentials.ClientId);
 55 | 
 56 |             if (client != null)
 57 |             {
 58 |                 if (credentials.Token != client.GetToken())
 59 |                 {
 60 |                     await socket.SendMessageAsync(Message.Create(MessageType.IdTaken, "Id is already used!"), cancellationToken);
 61 | 
 62 |                     await socket.CloseAsync(Errors.InvalidToken);
 63 | 
 64 |                     requestCompletedTcs.TrySetResult(null);
 65 | 
 66 |                     return;
 67 |                 }
 68 | 
 69 |                 client.SetSocket(socket);
 70 | 
 71 |                 // TODO send queued messages
 72 | 
 73 |             }
 74 |             else
 75 |             {
 76 |                 // TODO check concurrent limit options
 77 | 
 78 |                 client = new Client(credentials, socket);
 79 | 
 80 |                 realm.SetClient(client);
 81 | 
 82 |                 await client.SendAsync(new Message
 83 |                 {
 84 |                     Type = MessageType.Open,
 85 |                 }, cancellationToken);
 86 |             }
 87 | 
 88 |             // listen for incoming messages
 89 |             await AwaitReceiveAsync(client, realm, cancellationToken);
 90 | 
 91 |             // clean-up after socket close
 92 |             realm.RemoveClientById(client.GetId());
 93 | 
 94 |             requestCompletedTcs.TrySetResult(null);
 95 |         }
 96 | 
 97 |         private static async Task AwaitReceiveAsync(IClient client, IRealm realm, CancellationToken cancellationToken = default)
 98 |         {
 99 |             var socket = client.GetSocket();
100 | 
101 |             var buffer = new ArraySegment<byte>(new byte[1024 * 16]);
102 | 
103 |             WebSocketReceiveResult result;
104 | 
105 |             do
106 |             {
107 |                 var (readResult, message) = await ReadAsync(socket, buffer, cancellationToken);
108 | 
109 |                 await HandleMessageAsync(client, message, realm, cancellationToken);
110 | 
111 |                 result = readResult;
112 |             }
113 |             while (!result.CloseStatus.HasValue);
114 | 
115 |             await socket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, cancellationToken);
116 |         }
117 | 
118 |         private static async Task<(WebSocketReceiveResult, string)> ReadAsync(WebSocket socket, ArraySegment<byte> buffer, CancellationToken cancellationToken = default)
119 |         {
120 |             WebSocketReceiveResult result;
121 | 
122 |             using var ms = new MemoryStream();
123 | 
124 |             do
125 |             {
126 |                 result = await socket.ReceiveAsync(buffer, cancellationToken);
127 | 
128 |                 ms.Write(buffer.Array, buffer.Offset, result.Count);
129 |             }
130 |             while (!result.EndOfMessage);
131 | 
132 |             ms.Seek(0, SeekOrigin.Begin);
133 | 
134 |             if (result.MessageType == WebSocketMessageType.Text)
135 |             {
136 |                 using var reader = new StreamReader(ms, Encoding.UTF8);
137 | 
138 |                 return (result, reader.ReadToEnd());
139 |             }
140 | 
141 |             return (result, string.Empty);
142 |         }
143 | 
144 |         private static async Task HandleMessageAsync(IClient client, string text, IRealm realm, CancellationToken cancellationToken = default)
145 |         {
146 |             if (string.IsNullOrEmpty(text))
147 |             {
148 |                 return;
149 |             }
150 | 
151 |             var message = JsonConvert.DeserializeObject<Message>(text);
152 | 
153 |             await realm.HandleMessageAsync(client, message, cancellationToken);
154 |         }
155 |     }
156 | }


--------------------------------------------------------------------------------
/test/PeerJsServer.Demo/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css:
--------------------------------------------------------------------------------
  1 | /*!
  2 |  * Bootstrap Reboot v4.3.1 (https://getbootstrap.com/)
  3 |  * Copyright 2011-2019 The Bootstrap Authors
  4 |  * Copyright 2011-2019 Twitter, Inc.
  5 |  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  6 |  * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
  7 |  */
  8 | *,
  9 | *::before,
 10 | *::after {
 11 |   box-sizing: border-box;
 12 | }
 13 | 
 14 | html {
 15 |   font-family: sans-serif;
 16 |   line-height: 1.15;
 17 |   -webkit-text-size-adjust: 100%;
 18 |   -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
 19 | }
 20 | 
 21 | article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
 22 |   display: block;
 23 | }
 24 | 
 25 | body {
 26 |   margin: 0;
 27 |   font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
 28 |   font-size: 1rem;
 29 |   font-weight: 400;
 30 |   line-height: 1.5;
 31 |   color: #212529;
 32 |   text-align: left;
 33 |   background-color: #fff;
 34 | }
 35 | 
 36 | [tabindex="-1"]:focus {
 37 |   outline: 0 !important;
 38 | }
 39 | 
 40 | hr {
 41 |   box-sizing: content-box;
 42 |   height: 0;
 43 |   overflow: visible;
 44 | }
 45 | 
 46 | h1, h2, h3, h4, h5, h6 {
 47 |   margin-top: 0;
 48 |   margin-bottom: 0.5rem;
 49 | }
 50 | 
 51 | p {
 52 |   margin-top: 0;
 53 |   margin-bottom: 1rem;
 54 | }
 55 | 
 56 | abbr[title],
 57 | abbr[data-original-title] {
 58 |   text-decoration: underline;
 59 |   -webkit-text-decoration: underline dotted;
 60 |   text-decoration: underline dotted;
 61 |   cursor: help;
 62 |   border-bottom: 0;
 63 |   -webkit-text-decoration-skip-ink: none;
 64 |   text-decoration-skip-ink: none;
 65 | }
 66 | 
 67 | address {
 68 |   margin-bottom: 1rem;
 69 |   font-style: normal;
 70 |   line-height: inherit;
 71 | }
 72 | 
 73 | ol,
 74 | ul,
 75 | dl {
 76 |   margin-top: 0;
 77 |   margin-bottom: 1rem;
 78 | }
 79 | 
 80 | ol ol,
 81 | ul ul,
 82 | ol ul,
 83 | ul ol {
 84 |   margin-bottom: 0;
 85 | }
 86 | 
 87 | dt {
 88 |   font-weight: 700;
 89 | }
 90 | 
 91 | dd {
 92 |   margin-bottom: .5rem;
 93 |   margin-left: 0;
 94 | }
 95 | 
 96 | blockquote {
 97 |   margin: 0 0 1rem;
 98 | }
 99 | 
100 | b,
101 | strong {
102 |   font-weight: bolder;
103 | }
104 | 
105 | small {
106 |   font-size: 80%;
107 | }
108 | 
109 | sub,
110 | sup {
111 |   position: relative;
112 |   font-size: 75%;
113 |   line-height: 0;
114 |   vertical-align: baseline;
115 | }
116 | 
117 | sub {
118 |   bottom: -.25em;
119 | }
120 | 
121 | sup {
122 |   top: -.5em;
123 | }
124 | 
125 | a {
126 |   color: #007bff;
127 |   text-decoration: none;
128 |   background-color: transparent;
129 | }
130 | 
131 | a:hover {
132 |   color: #0056b3;
133 |   text-decoration: underline;
134 | }
135 | 
136 | a:not([href]):not([tabindex]) {
137 |   color: inherit;
138 |   text-decoration: none;
139 | }
140 | 
141 | a:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {
142 |   color: inherit;
143 |   text-decoration: none;
144 | }
145 | 
146 | a:not([href]):not([tabindex]):focus {
147 |   outline: 0;
148 | }
149 | 
150 | pre,
151 | code,
152 | kbd,
153 | samp {
154 |   font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
155 |   font-size: 1em;
156 | }
157 | 
158 | pre {
159 |   margin-top: 0;
160 |   margin-bottom: 1rem;
161 |   overflow: auto;
162 | }
163 | 
164 | figure {
165 |   margin: 0 0 1rem;
166 | }
167 | 
168 | img {
169 |   vertical-align: middle;
170 |   border-style: none;
171 | }
172 | 
173 | svg {
174 |   overflow: hidden;
175 |   vertical-align: middle;
176 | }
177 | 
178 | table {
179 |   border-collapse: collapse;
180 | }
181 | 
182 | caption {
183 |   padding-top: 0.75rem;
184 |   padding-bottom: 0.75rem;
185 |   color: #6c757d;
186 |   text-align: left;
187 |   caption-side: bottom;
188 | }
189 | 
190 | th {
191 |   text-align: inherit;
192 | }
193 | 
194 | label {
195 |   display: inline-block;
196 |   margin-bottom: 0.5rem;
197 | }
198 | 
199 | button {
200 |   border-radius: 0;
201 | }
202 | 
203 | button:focus {
204 |   outline: 1px dotted;
205 |   outline: 5px auto -webkit-focus-ring-color;
206 | }
207 | 
208 | input,
209 | button,
210 | select,
211 | optgroup,
212 | textarea {
213 |   margin: 0;
214 |   font-family: inherit;
215 |   font-size: inherit;
216 |   line-height: inherit;
217 | }
218 | 
219 | button,
220 | input {
221 |   overflow: visible;
222 | }
223 | 
224 | button,
225 | select {
226 |   text-transform: none;
227 | }
228 | 
229 | select {
230 |   word-wrap: normal;
231 | }
232 | 
233 | button,
234 | [type="button"],
235 | [type="reset"],
236 | [type="submit"] {
237 |   -webkit-appearance: button;
238 | }
239 | 
240 | button:not(:disabled),
241 | [type="button"]:not(:disabled),
242 | [type="reset"]:not(:disabled),
243 | [type="submit"]:not(:disabled) {
244 |   cursor: pointer;
245 | }
246 | 
247 | button::-moz-focus-inner,
248 | [type="button"]::-moz-focus-inner,
249 | [type="reset"]::-moz-focus-inner,
250 | [type="submit"]::-moz-focus-inner {
251 |   padding: 0;
252 |   border-style: none;
253 | }
254 | 
255 | input[type="radio"],
256 | input[type="checkbox"] {
257 |   box-sizing: border-box;
258 |   padding: 0;
259 | }
260 | 
261 | input[type="date"],
262 | input[type="time"],
263 | input[type="datetime-local"],
264 | input[type="month"] {
265 |   -webkit-appearance: listbox;
266 | }
267 | 
268 | textarea {
269 |   overflow: auto;
270 |   resize: vertical;
271 | }
272 | 
273 | fieldset {
274 |   min-width: 0;
275 |   padding: 0;
276 |   margin: 0;
277 |   border: 0;
278 | }
279 | 
280 | legend {
281 |   display: block;
282 |   width: 100%;
283 |   max-width: 100%;
284 |   padding: 0;
285 |   margin-bottom: .5rem;
286 |   font-size: 1.5rem;
287 |   line-height: inherit;
288 |   color: inherit;
289 |   white-space: normal;
290 | }
291 | 
292 | progress {
293 |   vertical-align: baseline;
294 | }
295 | 
296 | [type="number"]::-webkit-inner-spin-button,
297 | [type="number"]::-webkit-outer-spin-button {
298 |   height: auto;
299 | }
300 | 
301 | [type="search"] {
302 |   outline-offset: -2px;
303 |   -webkit-appearance: none;
304 | }
305 | 
306 | [type="search"]::-webkit-search-decoration {
307 |   -webkit-appearance: none;
308 | }
309 | 
310 | ::-webkit-file-upload-button {
311 |   font: inherit;
312 |   -webkit-appearance: button;
313 | }
314 | 
315 | output {
316 |   display: inline-block;
317 | }
318 | 
319 | summary {
320 |   display: list-item;
321 |   cursor: pointer;
322 | }
323 | 
324 | template {
325 |   display: none;
326 | }
327 | 
328 | [hidden] {
329 |   display: none !important;
330 | }
331 | /*# sourceMappingURL=bootstrap-reboot.css.map */


--------------------------------------------------------------------------------
/src/PeerJsServer/Models/Realm.cs:
--------------------------------------------------------------------------------
  1 | using System;
  2 | using System.Collections.Concurrent;
  3 | using System.Collections.Generic;
  4 | using System.Threading;
  5 | using System.Threading.Tasks;
  6 | 
  7 | namespace PeerJs
  8 | {
  9 |     public interface IRealm
 10 |     {
 11 |         IEnumerable<string> GetClientIds();
 12 | 
 13 |         IClient GetClient(string clientId);
 14 | 
 15 |         IEnumerable<string> GetClientIdsWithQueue();
 16 | 
 17 |         void SetClient(IClient client);
 18 | 
 19 |         bool RemoveClientById(string clientId);
 20 | 
 21 |         IMessageQueue GetMessageQueueById(string clientId);
 22 | 
 23 |         void AddMessageToQueue(string clientId, Message msg);
 24 | 
 25 |         void ClearMessageQueue(string clientId);
 26 | 
 27 |         string GenerateClientId();
 28 | 
 29 |         Task HandleMessageAsync(IClient client, Message message, CancellationToken cancellationToken = default);
 30 |     }
 31 | 
 32 |     public class Realm : IRealm
 33 |     {
 34 |         private readonly ConcurrentDictionary<string, IClient> _clients;
 35 |         private readonly ConcurrentDictionary<string, IMessageQueue> _messageQueues;
 36 | 
 37 |         public Realm()
 38 |         {
 39 |             _clients = new ConcurrentDictionary<string, IClient>();
 40 |             _messageQueues = new ConcurrentDictionary<string, IMessageQueue>();
 41 |         }
 42 | 
 43 |         public void AddMessageToQueue(string clientId, Message msg)
 44 |         {
 45 |             IMessageQueue messageQueue = null;
 46 | 
 47 |             if (!_messageQueues.TryGetValue(clientId, out var messageQeueue))
 48 |             {
 49 |                 messageQueue = new MessageQueue();
 50 | 
 51 |                 _messageQueues.TryAdd(clientId, messageQeueue);
 52 |             }
 53 | 
 54 |             messageQueue.Enqueue(msg);
 55 |         }
 56 | 
 57 |         public void ClearMessageQueue(string clientId)
 58 |         {
 59 |             _messageQueues.TryRemove(clientId, out var _);
 60 |         }
 61 | 
 62 |         public IMessageQueue GetMessageQueueById(string clientId)
 63 |         {
 64 |             return _messageQueues.TryGetValue(clientId, out var messageQueue) ? messageQueue : null;
 65 |         }
 66 | 
 67 |         public IClient GetClient(string clientId)
 68 |         {
 69 |             return _clients.TryGetValue(clientId, out var client) ? client : null;
 70 |         }
 71 | 
 72 |         public IEnumerable<string> GetClientIds()
 73 |         {
 74 |             return _clients.Keys;
 75 |         }
 76 | 
 77 |         public IEnumerable<string> GetClientIdsWithQueue()
 78 |         {
 79 |             return _messageQueues.Keys;
 80 |         }
 81 | 
 82 |         public void SetClient(IClient client)
 83 |         {
 84 |             _clients.TryAdd(client.GetId(), client);
 85 |         }
 86 | 
 87 |         public bool RemoveClientById(string clientId)
 88 |         {
 89 |             return _clients.TryRemove(clientId, out var _);
 90 |         }
 91 | 
 92 |         public string GenerateClientId()
 93 |         {
 94 |             return Guid.NewGuid().ToString();
 95 |         }
 96 | 
 97 |         public Task HandleMessageAsync(IClient client, Message message, CancellationToken cancellationToken = default)
 98 |         {
 99 |             return message.Type switch
100 |             {
101 |                 MessageType.Open => AcceptAsync(client, cancellationToken),
102 |                 MessageType.Heartbeat => HeartbeatAsync(client),
103 |                 MessageType.Offer => TransferAsync(client, message, cancellationToken),
104 |                 MessageType.Answer => TransferAsync(client, message, cancellationToken),
105 |                 MessageType.Candidate => TransferAsync(client, message, cancellationToken),
106 |                 MessageType.Expire => TransferAsync(client, message, cancellationToken),
107 |                 MessageType.Leave => LeaveAsync(client, message, cancellationToken),
108 |                 MessageType.IsAvailable => SendAvailableAsync(client, message, cancellationToken),
109 |                 _ => throw new NotImplementedException(),
110 |             };
111 |         }
112 | 
113 |         private static Task AcceptAsync(IClient client, CancellationToken cancellationToken = default)
114 |         {
115 |             return client.SendAsync(new Message
116 |             {
117 |                 Type = MessageType.Open,
118 |             }, cancellationToken);
119 |         }
120 | 
121 |         private static Task HeartbeatAsync(IClient client)
122 |         {
123 |             client.SetLastHeartbeat(DateTime.UtcNow);
124 | 
125 |             return Task.CompletedTask;
126 |         }
127 | 
128 |         private Task SendAvailableAsync(IClient client, Message message, CancellationToken cancellationToken = default)
129 |         {
130 |             var destinationClient = GetClient(message.Destination);
131 | 
132 |             return client.SendAsync(new Message
133 |             {
134 |                 Type = MessageType.IsAvailable,
135 |                 Payload = new
136 |                 {
137 |                     isAvailable = destinationClient != null
138 |                 }
139 |             }, cancellationToken);
140 |         }
141 | 
142 |         private async Task TransferAsync(IClient client, Message message, CancellationToken cancellationToken = default)
143 |         {
144 |             var destinationClient = GetClient(message.Destination);
145 | 
146 |             if (destinationClient != null)
147 |             {
148 |                 try
149 |                 {
150 |                     message.Source = client.GetId();
151 | 
152 |                     await destinationClient.SendAsync(message, cancellationToken);
153 |                 }
154 |                 catch (Exception ex)
155 |                 {
156 |                     var destinationSocket = destinationClient.GetSocket();
157 | 
158 |                     // This happens when a peer disconnects without closing connections and
159 |                     // the associated WebSocket has not closed.
160 |                     if (destinationSocket != null)
161 |                     {
162 |                         await destinationSocket.CloseAsync(ex.Message);
163 |                     }
164 |                     else
165 |                     {
166 |                         RemoveClientById(message.Destination);
167 |                     }
168 | 
169 |                     // Tell the other side to stop trying.
170 |                     await LeaveAsync(destinationClient, new Message
171 |                     {
172 |                         Destination = message.Source,
173 |                         Source = message.Destination,
174 |                         Type = MessageType.Leave,
175 |                     }, cancellationToken);
176 |                 }
177 |             }
178 |             else
179 |             {
180 |                 if (message.ShouldQueue())
181 |                 {
182 |                     AddMessageToQueue(message.Destination, message);
183 |                 }
184 |             }
185 |         }
186 | 
187 |         private async Task LeaveAsync(IClient client, Message message, CancellationToken cancellationToken = default)
188 |         {
189 |             if (string.IsNullOrEmpty(message.Destination))
190 |             {
191 |                 RemoveClientById(message.Source);
192 | 
193 |                 return;
194 |             }
195 | 
196 |             await TransferAsync(client, message, cancellationToken);
197 |         }
198 |     }
199 | }


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
  1 | ## Ignore Visual Studio temporary files, build results, and
  2 | ## files generated by popular Visual Studio add-ons.
  3 | ##
  4 | ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
  5 | 
  6 | # User-specific files
  7 | *.rsuser
  8 | *.suo
  9 | *.user
 10 | *.userosscache
 11 | *.sln.docstates
 12 | 
 13 | # User-specific files (MonoDevelop/Xamarin Studio)
 14 | *.userprefs
 15 | 
 16 | # Mono auto generated files
 17 | mono_crash.*
 18 | 
 19 | # Build results
 20 | [Dd]ebug/
 21 | [Dd]ebugPublic/
 22 | [Rr]elease/
 23 | [Rr]eleases/
 24 | x64/
 25 | x86/
 26 | [Aa][Rr][Mm]/
 27 | [Aa][Rr][Mm]64/
 28 | bld/
 29 | [Bb]in/
 30 | [Oo]bj/
 31 | [Ll]og/
 32 | [Ll]ogs/
 33 | 
 34 | # Visual Studio 2015/2017 cache/options directory
 35 | .vs/
 36 | # Uncomment if you have tasks that create the project's static files in wwwroot
 37 | #wwwroot/
 38 | 
 39 | # Visual Studio 2017 auto generated files
 40 | Generated\ Files/
 41 | 
 42 | # MSTest test Results
 43 | [Tt]est[Rr]esult*/
 44 | [Bb]uild[Ll]og.*
 45 | 
 46 | # NUnit
 47 | *.VisualState.xml
 48 | TestResult.xml
 49 | nunit-*.xml
 50 | 
 51 | # Build Results of an ATL Project
 52 | [Dd]ebugPS/
 53 | [Rr]eleasePS/
 54 | dlldata.c
 55 | 
 56 | # Benchmark Results
 57 | BenchmarkDotNet.Artifacts/
 58 | 
 59 | # .NET Core
 60 | project.lock.json
 61 | project.fragment.lock.json
 62 | artifacts/
 63 | 
 64 | # StyleCop
 65 | StyleCopReport.xml
 66 | 
 67 | # Files built by Visual Studio
 68 | *_i.c
 69 | *_p.c
 70 | *_h.h
 71 | *.ilk
 72 | *.meta
 73 | *.obj
 74 | *.iobj
 75 | *.pch
 76 | *.pdb
 77 | *.ipdb
 78 | *.pgc
 79 | *.pgd
 80 | *.rsp
 81 | *.sbr
 82 | *.tlb
 83 | *.tli
 84 | *.tlh
 85 | *.tmp
 86 | *.tmp_proj
 87 | *_wpftmp.csproj
 88 | *.log
 89 | *.vspscc
 90 | *.vssscc
 91 | .builds
 92 | *.pidb
 93 | *.svclog
 94 | *.scc
 95 | 
 96 | # Chutzpah Test files
 97 | _Chutzpah*
 98 | 
 99 | # Visual C++ cache files
100 | ipch/
101 | *.aps
102 | *.ncb
103 | *.opendb
104 | *.opensdf
105 | *.sdf
106 | *.cachefile
107 | *.VC.db
108 | *.VC.VC.opendb
109 | 
110 | # Visual Studio profiler
111 | *.psess
112 | *.vsp
113 | *.vspx
114 | *.sap
115 | 
116 | # Visual Studio Trace Files
117 | *.e2e
118 | 
119 | # TFS 2012 Local Workspace
120 | $tf/
121 | 
122 | # Guidance Automation Toolkit
123 | *.gpState
124 | 
125 | # ReSharper is a .NET coding add-in
126 | _ReSharper*/
127 | *.[Rr]e[Ss]harper
128 | *.DotSettings.user
129 | 
130 | # TeamCity is a build add-in
131 | _TeamCity*
132 | 
133 | # DotCover is a Code Coverage Tool
134 | *.dotCover
135 | 
136 | # AxoCover is a Code Coverage Tool
137 | .axoCover/*
138 | !.axoCover/settings.json
139 | 
140 | # Visual Studio code coverage results
141 | *.coverage
142 | *.coveragexml
143 | 
144 | # NCrunch
145 | _NCrunch_*
146 | .*crunch*.local.xml
147 | nCrunchTemp_*
148 | 
149 | # MightyMoose
150 | *.mm.*
151 | AutoTest.Net/
152 | 
153 | # Web workbench (sass)
154 | .sass-cache/
155 | 
156 | # Installshield output folder
157 | [Ee]xpress/
158 | 
159 | # DocProject is a documentation generator add-in
160 | DocProject/buildhelp/
161 | DocProject/Help/*.HxT
162 | DocProject/Help/*.HxC
163 | DocProject/Help/*.hhc
164 | DocProject/Help/*.hhk
165 | DocProject/Help/*.hhp
166 | DocProject/Help/Html2
167 | DocProject/Help/html
168 | 
169 | # Click-Once directory
170 | publish/
171 | 
172 | # Publish Web Output
173 | *.[Pp]ublish.xml
174 | *.azurePubxml
175 | # Note: Comment the next line if you want to checkin your web deploy settings,
176 | # but database connection strings (with potential passwords) will be unencrypted
177 | *.pubxml
178 | *.publishproj
179 | 
180 | # Microsoft Azure Web App publish settings. Comment the next line if you want to
181 | # checkin your Azure Web App publish settings, but sensitive information contained
182 | # in these scripts will be unencrypted
183 | PublishScripts/
184 | 
185 | # NuGet Packages
186 | *.nupkg
187 | # NuGet Symbol Packages
188 | *.snupkg
189 | # The packages folder can be ignored because of Package Restore
190 | **/[Pp]ackages/*
191 | # except build/, which is used as an MSBuild target.
192 | !**/[Pp]ackages/build/
193 | # Uncomment if necessary however generally it will be regenerated when needed
194 | #!**/[Pp]ackages/repositories.config
195 | # NuGet v3's project.json files produces more ignorable files
196 | *.nuget.props
197 | *.nuget.targets
198 | 
199 | # Microsoft Azure Build Output
200 | csx/
201 | *.build.csdef
202 | 
203 | # Microsoft Azure Emulator
204 | ecf/
205 | rcf/
206 | 
207 | # Windows Store app package directories and files
208 | AppPackages/
209 | BundleArtifacts/
210 | Package.StoreAssociation.xml
211 | _pkginfo.txt
212 | *.appx
213 | *.appxbundle
214 | *.appxupload
215 | 
216 | # Visual Studio cache files
217 | # files ending in .cache can be ignored
218 | *.[Cc]ache
219 | # but keep track of directories ending in .cache
220 | !?*.[Cc]ache/
221 | 
222 | # Others
223 | ClientBin/
224 | ~$*
225 | *~
226 | *.dbmdl
227 | *.dbproj.schemaview
228 | *.jfm
229 | *.pfx
230 | *.publishsettings
231 | orleans.codegen.cs
232 | 
233 | # Including strong name files can present a security risk
234 | # (https://github.com/github/gitignore/pull/2483#issue-259490424)
235 | #*.snk
236 | 
237 | # Since there are multiple workflows, uncomment next line to ignore bower_components
238 | # (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
239 | #bower_components/
240 | 
241 | # RIA/Silverlight projects
242 | Generated_Code/
243 | 
244 | # Backup & report files from converting an old project file
245 | # to a newer Visual Studio version. Backup files are not needed,
246 | # because we have git ;-)
247 | _UpgradeReport_Files/
248 | Backup*/
249 | UpgradeLog*.XML
250 | UpgradeLog*.htm
251 | ServiceFabricBackup/
252 | *.rptproj.bak
253 | 
254 | # SQL Server files
255 | *.mdf
256 | *.ldf
257 | *.ndf
258 | 
259 | # Business Intelligence projects
260 | *.rdl.data
261 | *.bim.layout
262 | *.bim_*.settings
263 | *.rptproj.rsuser
264 | *- [Bb]ackup.rdl
265 | *- [Bb]ackup ([0-9]).rdl
266 | *- [Bb]ackup ([0-9][0-9]).rdl
267 | 
268 | # Microsoft Fakes
269 | FakesAssemblies/
270 | 
271 | # GhostDoc plugin setting file
272 | *.GhostDoc.xml
273 | 
274 | # Node.js Tools for Visual Studio
275 | .ntvs_analysis.dat
276 | node_modules/
277 | 
278 | # Visual Studio 6 build log
279 | *.plg
280 | 
281 | # Visual Studio 6 workspace options file
282 | *.opt
283 | 
284 | # Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
285 | *.vbw
286 | 
287 | # Visual Studio LightSwitch build output
288 | **/*.HTMLClient/GeneratedArtifacts
289 | **/*.DesktopClient/GeneratedArtifacts
290 | **/*.DesktopClient/ModelManifest.xml
291 | **/*.Server/GeneratedArtifacts
292 | **/*.Server/ModelManifest.xml
293 | _Pvt_Extensions
294 | 
295 | # Paket dependency manager
296 | .paket/paket.exe
297 | paket-files/
298 | 
299 | # FAKE - F# Make
300 | .fake/
301 | 
302 | # CodeRush personal settings
303 | .cr/personal
304 | 
305 | # Python Tools for Visual Studio (PTVS)
306 | __pycache__/
307 | *.pyc
308 | 
309 | # Cake - Uncomment if you are using it
310 | # tools/**
311 | # !tools/packages.config
312 | 
313 | # Tabs Studio
314 | *.tss
315 | 
316 | # Telerik's JustMock configuration file
317 | *.jmconfig
318 | 
319 | # BizTalk build output
320 | *.btp.cs
321 | *.btm.cs
322 | *.odx.cs
323 | *.xsd.cs
324 | 
325 | # OpenCover UI analysis results
326 | OpenCover/
327 | 
328 | # Azure Stream Analytics local run output
329 | ASALocalRun/
330 | 
331 | # MSBuild Binary and Structured Log
332 | *.binlog
333 | 
334 | # NVidia Nsight GPU debugger configuration file
335 | *.nvuser
336 | 
337 | # MFractors (Xamarin productivity tool) working folder
338 | .mfractor/
339 | 
340 | # Local History for Visual Studio
341 | .localhistory/
342 | 
343 | # BeatPulse healthcheck temp database
344 | healthchecksdb
345 | 
346 | # Backup folder for Package Reference Convert tool in Visual Studio 2017
347 | MigrationBackup/
348 | 
349 | # Ionide (cross platform F# VS Code tools) working folder
350 | .ionide/
351 | /test/PeerJsServer.Demo/.config/dotnet-tools.json
352 | 


--------------------------------------------------------------------------------
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Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.\n// 2. Change the default font family in all browsers.\n// 3. Correct the line height in all browsers.\n// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.\n// 5. Change the default tap highlight to be completely transparent in iOS.\n\n*,\n*::before,\n*::after {\n  box-sizing: border-box; // 1\n}\n\nhtml {\n  font-family: sans-serif; // 2\n  line-height: 1.15; // 3\n  -webkit-text-size-adjust: 100%; // 4\n  -webkit-tap-highlight-color: rgba($black, 0); // 5\n}\n\n// Shim for \"new\" HTML5 structural elements to display correctly (IE10, older browsers)\n// TODO: remove in v5\n// stylelint-disable-next-line selector-list-comma-newline-after\narticle, aside, figcaption, figure, footer, header, hgroup, main, nav, section {\n  display: block;\n}\n\n// Body\n//\n// 1. Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Set an explicit initial text-align value so that we can later use\n//    the `inherit` value on things like `<th>` elements.\n\nbody {\n  margin: 0; // 1\n  font-family: $font-family-base;\n  @include font-size($font-size-base);\n  font-weight: $font-weight-base;\n  line-height: $line-height-base;\n  color: $body-color;\n  text-align: left; // 3\n  background-color: $body-bg; // 2\n}\n\n// Suppress the focus outline on elements that cannot be accessed via keyboard.\n// This prevents an unwanted focus outline from appearing around elements that\n// might still respond to pointer events.\n//\n// Credit: https://github.com/suitcss/base\n[tabindex=\"-1\"]:focus {\n  outline: 0 !important;\n}\n\n\n// Content grouping\n//\n// 1. Add the correct box sizing in Firefox.\n// 2. Show the overflow in Edge and IE.\n\nhr {\n  box-sizing: content-box; // 1\n  height: 0; // 1\n  overflow: visible; // 2\n}\n\n\n//\n// Typography\n//\n\n// Remove top margins from headings\n//\n// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top\n// margin for easier control within type scales as it avoids margin collapsing.\n// stylelint-disable-next-line selector-list-comma-newline-after\nh1, h2, h3, h4, h5, h6 {\n  margin-top: 0;\n  margin-bottom: $headings-margin-bottom;\n}\n\n// Reset margins on paragraphs\n//\n// Similarly, the top margin on `<p>`s get reset. However, we also reset the\n// bottom margin to use `rem` units instead of `em`.\np {\n  margin-top: 0;\n  margin-bottom: $paragraph-margin-bottom;\n}\n\n// Abbreviations\n//\n// 1. Duplicate behavior to the data-* attribute for our tooltip plugin\n// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.\n// 3. Add explicit cursor to indicate changed behavior.\n// 4. Remove the bottom border in Firefox 39-.\n// 5. Prevent the text-decoration to be skipped.\n\nabbr[title],\nabbr[data-original-title] { // 1\n  text-decoration: underline; // 2\n  text-decoration: underline dotted; // 2\n  cursor: help; // 3\n  border-bottom: 0; // 4\n  text-decoration-skip-ink: none; // 5\n}\n\naddress {\n  margin-bottom: 1rem;\n  font-style: normal;\n  line-height: inherit;\n}\n\nol,\nul,\ndl {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nol ol,\nul ul,\nol ul,\nul ol {\n  margin-bottom: 0;\n}\n\ndt {\n  font-weight: $dt-font-weight;\n}\n\ndd {\n  margin-bottom: .5rem;\n  margin-left: 0; // Undo browser default\n}\n\nblockquote {\n  margin: 0 0 1rem;\n}\n\nb,\nstrong {\n  font-weight: $font-weight-bolder; // Add the correct font weight in Chrome, Edge, and Safari\n}\n\nsmall {\n  @include font-size(80%); // Add the correct font size in all browsers\n}\n\n//\n// Prevent `sub` and `sup` elements from affecting the line height in\n// all browsers.\n//\n\nsub,\nsup {\n  position: relative;\n  @include font-size(75%);\n  line-height: 0;\n  vertical-align: baseline;\n}\n\nsub { bottom: -.25em; }\nsup { top: -.5em; }\n\n\n//\n// Links\n//\n\na {\n  color: $link-color;\n  text-decoration: $link-decoration;\n  background-color: transparent; // Remove the gray background on active links in IE 10.\n\n  @include hover {\n    color: $link-hover-color;\n    text-decoration: $link-hover-decoration;\n  }\n}\n\n// And undo these styles for placeholder links/named anchors (without href)\n// which have not been made explicitly keyboard-focusable (without tabindex).\n// It would be more straightforward to just use a[href] in previous block, but that\n// causes specificity issues in many other styles that are too complex to fix.\n// See https://github.com/twbs/bootstrap/issues/19402\n\na:not([href]):not([tabindex]) {\n  color: inherit;\n  text-decoration: none;\n\n  @include hover-focus {\n    color: inherit;\n    text-decoration: none;\n  }\n\n  &:focus {\n    outline: 0;\n  }\n}\n\n\n//\n// Code\n//\n\npre,\ncode,\nkbd,\nsamp {\n  font-family: $font-family-monospace;\n  @include font-size(1em); // Correct the odd `em` font sizing in all browsers.\n}\n\npre {\n  // Remove browser default top margin\n  margin-top: 0;\n  // Reset browser default of `1em` to use `rem`s\n  margin-bottom: 1rem;\n  // Don't allow content to break outside\n  overflow: auto;\n}\n\n\n//\n// Figures\n//\n\nfigure {\n  // Apply a consistent margin strategy (matches our type styles).\n  margin: 0 0 1rem;\n}\n\n\n//\n// Images and content\n//\n\nimg {\n  vertical-align: middle;\n  border-style: none; // Remove the border on images inside links in IE 10-.\n}\n\nsvg {\n  // Workaround for the SVG overflow bug in IE10/11 is still required.\n  // See https://github.com/twbs/bootstrap/issues/26878\n  overflow: hidden;\n  vertical-align: middle;\n}\n\n\n//\n// Tables\n//\n\ntable {\n  border-collapse: collapse; // Prevent double borders\n}\n\ncaption {\n  padding-top: $table-cell-padding;\n  padding-bottom: $table-cell-padding;\n  color: $table-caption-color;\n  text-align: left;\n  caption-side: bottom;\n}\n\nth {\n  // Matches default `<td>` alignment by inheriting from the `<body>`, or the\n  // closest parent with a set `text-align`.\n  text-align: inherit;\n}\n\n\n//\n// Forms\n//\n\nlabel {\n  // Allow labels to use `margin` for spacing.\n  display: inline-block;\n  margin-bottom: $label-margin-bottom;\n}\n\n// Remove the default `border-radius` that macOS Chrome adds.\n//\n// Details at https://github.com/twbs/bootstrap/issues/24093\nbutton {\n  // stylelint-disable-next-line property-blacklist\n  border-radius: 0;\n}\n\n// Work around a Firefox/IE bug where the transparent `button` background\n// results in a loss of the default `button` focus styles.\n//\n// Credit: https://github.com/suitcss/base/\nbutton:focus {\n  outline: 1px dotted;\n  outline: 5px auto -webkit-focus-ring-color;\n}\n\ninput,\nbutton,\nselect,\noptgroup,\ntextarea {\n  margin: 0; // Remove the margin in Firefox and Safari\n  font-family: inherit;\n  @include font-size(inherit);\n  line-height: inherit;\n}\n\nbutton,\ninput {\n  overflow: visible; // Show the overflow in Edge\n}\n\nbutton,\nselect {\n  text-transform: none; // Remove the inheritance of text transform in Firefox\n}\n\n// Remove the inheritance of word-wrap in Safari.\n//\n// Details at https://github.com/twbs/bootstrap/issues/24990\nselect {\n  word-wrap: normal;\n}\n\n\n// 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`\n//    controls in Android 4.\n// 2. Correct the inability to style clickable types in iOS and Safari.\nbutton,\n[type=\"button\"], // 1\n[type=\"reset\"],\n[type=\"submit\"] {\n  -webkit-appearance: button; // 2\n}\n\n// Opinionated: add \"hand\" cursor to non-disabled button elements.\n@if $enable-pointer-cursor-for-buttons {\n  button,\n  [type=\"button\"],\n  [type=\"reset\"],\n  [type=\"submit\"] {\n    &:not(:disabled) {\n      cursor: pointer;\n    }\n  }\n}\n\n// Remove inner border and padding from Firefox, but don't restore the outline like Normalize.\nbutton::-moz-focus-inner,\n[type=\"button\"]::-moz-focus-inner,\n[type=\"reset\"]::-moz-focus-inner,\n[type=\"submit\"]::-moz-focus-inner {\n  padding: 0;\n  border-style: none;\n}\n\ninput[type=\"radio\"],\ninput[type=\"checkbox\"] {\n  box-sizing: border-box; // 1. Add the correct box sizing in IE 10-\n  padding: 0; // 2. Remove the padding in IE 10-\n}\n\n\ninput[type=\"date\"],\ninput[type=\"time\"],\ninput[type=\"datetime-local\"],\ninput[type=\"month\"] {\n  // Remove the default appearance of temporal inputs to avoid a Mobile Safari\n  // bug where setting a custom line-height prevents text from being vertically\n  // centered within the input.\n  // See https://bugs.webkit.org/show_bug.cgi?id=139848\n  // and https://github.com/twbs/bootstrap/issues/11266\n  -webkit-appearance: listbox;\n}\n\ntextarea {\n  overflow: auto; // Remove the default vertical scrollbar in IE.\n  // Textareas should really only resize vertically so they don't break their (horizontal) containers.\n  resize: vertical;\n}\n\nfieldset {\n  // Browsers set a default `min-width: min-content;` on fieldsets,\n  // unlike e.g. `<div>`s, which have `min-width: 0;` by default.\n  // So we reset that to ensure fieldsets behave more like a standard block element.\n  // See https://github.com/twbs/bootstrap/issues/12359\n  // and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements\n  min-width: 0;\n  // Reset the default outline behavior of fieldsets so they don't affect page layout.\n  padding: 0;\n  margin: 0;\n  border: 0;\n}\n\n// 1. Correct the text wrapping in Edge and IE.\n// 2. Correct the color inheritance from `fieldset` elements in IE.\nlegend {\n  display: block;\n  width: 100%;\n  max-width: 100%; // 1\n  padding: 0;\n  margin-bottom: .5rem;\n  @include font-size(1.5rem);\n  line-height: inherit;\n  color: inherit; // 2\n  white-space: normal; // 1\n}\n\nprogress {\n  vertical-align: baseline; // Add the correct vertical alignment in Chrome, Firefox, and Opera.\n}\n\n// Correct the cursor style of increment and decrement buttons in Chrome.\n[type=\"number\"]::-webkit-inner-spin-button,\n[type=\"number\"]::-webkit-outer-spin-button {\n  height: auto;\n}\n\n[type=\"search\"] {\n  // This overrides the extra rounded corners on search inputs in iOS so that our\n  // `.form-control` class can properly style them. Note that this cannot simply\n  // be added to `.form-control` as it's not specific enough. For details, see\n  // https://github.com/twbs/bootstrap/issues/11586.\n  outline-offset: -2px; // 2. Correct the outline style in Safari.\n  -webkit-appearance: none;\n}\n\n//\n// Remove the inner padding in Chrome and Safari on macOS.\n//\n\n[type=\"search\"]::-webkit-search-decoration {\n  -webkit-appearance: none;\n}\n\n//\n// 1. Correct the inability to style clickable types in iOS and Safari.\n// 2. Change font properties to `inherit` in Safari.\n//\n\n::-webkit-file-upload-button {\n  font: inherit; // 2\n  -webkit-appearance: button; // 1\n}\n\n//\n// Correct element displays\n//\n\noutput {\n  display: inline-block;\n}\n\nsummary {\n  display: list-item; // Add the correct display in all browsers\n  cursor: pointer;\n}\n\ntemplate {\n  display: none; // Add the correct display in IE\n}\n\n// Always hide an element with the `hidden` HTML attribute (from PureCSS).\n// Needed for proper display in IE 10-.\n[hidden] {\n  display: none !important;\n}\n","/*!\n * Bootstrap Reboot v4.3.1 (https://getbootstrap.com/)\n * Copyright 2011-2019 The Bootstrap Authors\n * Copyright 2011-2019 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)\n */\n*,\n*::before,\n*::after {\n  box-sizing: border-box;\n}\n\nhtml {\n  font-family: sans-serif;\n  line-height: 1.15;\n  -webkit-text-size-adjust: 100%;\n  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\n}\n\narticle, aside, figcaption, figure, footer, header, hgroup, main, nav, section {\n  display: block;\n}\n\nbody {\n  margin: 0;\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, \"Noto Sans\", sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\";\n  font-size: 1rem;\n  font-weight: 400;\n  line-height: 1.5;\n  color: #212529;\n  text-align: left;\n  background-color: #fff;\n}\n\n[tabindex=\"-1\"]:focus {\n  outline: 0 !important;\n}\n\nhr {\n  box-sizing: content-box;\n  height: 0;\n  overflow: visible;\n}\n\nh1, h2, h3, h4, h5, h6 {\n  margin-top: 0;\n  margin-bottom: 0.5rem;\n}\n\np {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nabbr[title],\nabbr[data-original-title] {\n  text-decoration: underline;\n  -webkit-text-decoration: underline dotted;\n  text-decoration: underline dotted;\n  cursor: help;\n  border-bottom: 0;\n  -webkit-text-decoration-skip-ink: none;\n  text-decoration-skip-ink: none;\n}\n\naddress {\n  margin-bottom: 1rem;\n  font-style: normal;\n  line-height: inherit;\n}\n\nol,\nul,\ndl {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nol ol,\nul ul,\nol ul,\nul ol {\n  margin-bottom: 0;\n}\n\ndt {\n  font-weight: 700;\n}\n\ndd {\n  margin-bottom: .5rem;\n  margin-left: 0;\n}\n\nblockquote {\n  margin: 0 0 1rem;\n}\n\nb,\nstrong {\n  font-weight: bolder;\n}\n\nsmall {\n  font-size: 80%;\n}\n\nsub,\nsup {\n  position: relative;\n  font-size: 75%;\n  line-height: 0;\n  vertical-align: baseline;\n}\n\nsub {\n  bottom: -.25em;\n}\n\nsup {\n  top: -.5em;\n}\n\na {\n  color: #007bff;\n  text-decoration: none;\n  background-color: transparent;\n}\n\na:hover {\n  color: #0056b3;\n  text-decoration: underline;\n}\n\na:not([href]):not([tabindex]) {\n  color: inherit;\n  text-decoration: none;\n}\n\na:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {\n  color: inherit;\n  text-decoration: none;\n}\n\na:not([href]):not([tabindex]):focus {\n  outline: 0;\n}\n\npre,\ncode,\nkbd,\nsamp {\n  font-family: SFMono-Regular, Menlo, Monaco, Consolas, \"Liberation Mono\", \"Courier New\", monospace;\n  font-size: 1em;\n}\n\npre {\n  margin-top: 0;\n  margin-bottom: 1rem;\n  overflow: auto;\n}\n\nfigure {\n  margin: 0 0 1rem;\n}\n\nimg {\n  vertical-align: middle;\n  border-style: none;\n}\n\nsvg {\n  overflow: hidden;\n  vertical-align: middle;\n}\n\ntable {\n  border-collapse: collapse;\n}\n\ncaption {\n  padding-top: 0.75rem;\n  padding-bottom: 0.75rem;\n  color: #6c757d;\n  text-align: left;\n  caption-side: bottom;\n}\n\nth {\n  text-align: inherit;\n}\n\nlabel {\n  display: inline-block;\n  margin-bottom: 0.5rem;\n}\n\nbutton {\n  border-radius: 0;\n}\n\nbutton:focus {\n  outline: 1px dotted;\n  outline: 5px auto -webkit-focus-ring-color;\n}\n\ninput,\nbutton,\nselect,\noptgroup,\ntextarea {\n  margin: 0;\n  font-family: inherit;\n  font-size: inherit;\n  line-height: inherit;\n}\n\nbutton,\ninput {\n  overflow: visible;\n}\n\nbutton,\nselect {\n  text-transform: none;\n}\n\nselect {\n  word-wrap: normal;\n}\n\nbutton,\n[type=\"button\"],\n[type=\"reset\"],\n[type=\"submit\"] {\n  -webkit-appearance: button;\n}\n\nbutton:not(:disabled),\n[type=\"button\"]:not(:disabled),\n[type=\"reset\"]:not(:disabled),\n[type=\"submit\"]:not(:disabled) {\n  cursor: pointer;\n}\n\nbutton::-moz-focus-inner,\n[type=\"button\"]::-moz-focus-inner,\n[type=\"reset\"]::-moz-focus-inner,\n[type=\"submit\"]::-moz-focus-inner {\n  padding: 0;\n  border-style: none;\n}\n\ninput[type=\"radio\"],\ninput[type=\"checkbox\"] {\n  box-sizing: border-box;\n  padding: 0;\n}\n\ninput[type=\"date\"],\ninput[type=\"time\"],\ninput[type=\"datetime-local\"],\ninput[type=\"month\"] {\n  -webkit-appearance: listbox;\n}\n\ntextarea {\n  overflow: auto;\n  resize: vertical;\n}\n\nfieldset {\n  min-width: 0;\n  padding: 0;\n  margin: 0;\n  border: 0;\n}\n\nlegend {\n  display: block;\n  width: 100%;\n  max-width: 100%;\n  padding: 0;\n  margin-bottom: .5rem;\n  font-size: 1.5rem;\n  line-height: inherit;\n  color: inherit;\n  white-space: normal;\n}\n\nprogress {\n  vertical-align: baseline;\n}\n\n[type=\"number\"]::-webkit-inner-spin-button,\n[type=\"number\"]::-webkit-outer-spin-button {\n  height: auto;\n}\n\n[type=\"search\"] {\n  outline-offset: -2px;\n  -webkit-appearance: none;\n}\n\n[type=\"search\"]::-webkit-search-decoration {\n  -webkit-appearance: none;\n}\n\n::-webkit-file-upload-button {\n  font: inherit;\n  -webkit-appearance: button;\n}\n\noutput {\n  display: inline-block;\n}\n\nsummary {\n  display: list-item;\n  cursor: pointer;\n}\n\ntemplate {\n  display: none;\n}\n\n[hidden] {\n  display: none !important;\n}\n/*# sourceMappingURL=bootstrap-reboot.css.map */","// stylelint-disable property-blacklist, scss/dollar-variable-default\n\n// SCSS RFS mixin\n//\n// Automated font-resizing\n//\n// See https://github.com/twbs/rfs\n\n// Configuration\n\n// Base font size\n$rfs-base-font-size: 1.25rem !default;\n$rfs-font-size-unit: rem !default;\n\n// Breakpoint at where font-size starts decreasing if screen width is smaller\n$rfs-breakpoint: 1200px !default;\n$rfs-breakpoint-unit: px !default;\n\n// Resize font-size based on screen height and width\n$rfs-two-dimensional: false !default;\n\n// Factor of decrease\n$rfs-factor: 10 !default;\n\n@if type-of($rfs-factor) != \"number\" or $rfs-factor <= 1 {\n  @error \"`#{$rfs-factor}` is not a valid  $rfs-factor, it must be greater than 1.\";\n}\n\n// Generate enable or disable classes. Possibilities: false, \"enable\" or \"disable\"\n$rfs-class: false !default;\n\n// 1 rem = $rfs-rem-value px\n$rfs-rem-value: 16 !default;\n\n// Safari iframe resize bug: https://github.com/twbs/rfs/issues/14\n$rfs-safari-iframe-resize-bug-fix: false !default;\n\n// Disable RFS by setting $enable-responsive-font-sizes to false\n$enable-responsive-font-sizes: true !default;\n\n// Cache $rfs-base-font-size unit\n$rfs-base-font-size-unit: unit($rfs-base-font-size);\n\n// Remove px-unit from $rfs-base-font-size for calculations\n@if $rfs-base-font-size-unit == \"px\" {\n  $rfs-base-font-size: $rfs-base-font-size / ($rfs-base-font-size * 0 + 1);\n}\n@else if $rfs-base-font-size-unit == \"rem\" {\n  $rfs-base-font-size: $rfs-base-font-size / ($rfs-base-font-size * 0 + 1 / $rfs-rem-value);\n}\n\n// Cache $rfs-breakpoint unit to prevent multiple calls\n$rfs-breakpoint-unit-cache: unit($rfs-breakpoint);\n\n// Remove unit from $rfs-breakpoint for calculations\n@if $rfs-breakpoint-unit-cache == \"px\" {\n  $rfs-breakpoint: $rfs-breakpoint / ($rfs-breakpoint * 0 + 1);\n}\n@else if $rfs-breakpoint-unit-cache == \"rem\" or $rfs-breakpoint-unit-cache == \"em\" {\n  $rfs-breakpoint: $rfs-breakpoint / ($rfs-breakpoint * 0 + 1 / $rfs-rem-value);\n}\n\n// Responsive font-size mixin\n@mixin rfs($fs, $important: false) {\n  // Cache $fs unit\n  $fs-unit: if(type-of($fs) == \"number\", unit($fs), false);\n\n  // Add !important suffix if needed\n  $rfs-suffix: if($important, \" !important\", \"\");\n\n  // If $fs isn't a number (like inherit) or $fs has a unit (not px or rem, like 1.5em) or $ is 0, just print the value\n  @if not $fs-unit or $fs-unit != \"\" and $fs-unit != \"px\" and $fs-unit != \"rem\" or $fs == 0 {\n    font-size: #{$fs}#{$rfs-suffix};\n  }\n  @else {\n    // Variables for storing static and fluid rescaling\n    $rfs-static: null;\n    $rfs-fluid: null;\n\n    // Remove px-unit from $fs for calculations\n    @if $fs-unit == \"px\" {\n      $fs: $fs / ($fs * 0 + 1);\n    }\n    @else if $fs-unit == \"rem\" {\n      $fs: $fs / ($fs * 0 + 1 / $rfs-rem-value);\n    }\n\n    // Set default font-size\n    @if $rfs-font-size-unit == rem {\n      $rfs-static: #{$fs / $rfs-rem-value}rem#{$rfs-suffix};\n    }\n    @else if $rfs-font-size-unit == px {\n      $rfs-static: #{$fs}px#{$rfs-suffix};\n    }\n    @else {\n      @error \"`#{$rfs-font-size-unit}` is not a valid unit for $rfs-font-size-unit. Use `px` or `rem`.\";\n    }\n\n    // Only add media query if font-size is bigger as the minimum font-size\n    // If $rfs-factor == 1, no rescaling will take place\n    @if $fs > $rfs-base-font-size and $enable-responsive-font-sizes {\n      $min-width: null;\n      $variable-unit: null;\n\n      // Calculate minimum font-size for given font-size\n      $fs-min: $rfs-base-font-size + ($fs - $rfs-base-font-size) / $rfs-factor;\n\n      // Calculate difference between given font-size and minimum font-size for given font-size\n      $fs-diff: $fs - $fs-min;\n\n      // Base font-size formatting\n      // No need to check if the unit is valid, because we did that before\n      $min-width: if($rfs-font-size-unit == rem, #{$fs-min / $rfs-rem-value}rem, #{$fs-min}px);\n\n      // If two-dimensional, use smallest of screen width and height\n      $variable-unit: if($rfs-two-dimensional, vmin, vw);\n\n      // Calculate the variable width between 0 and $rfs-breakpoint\n      $variable-width: #{$fs-diff * 100 / $rfs-breakpoint}#{$variable-unit};\n\n      // Set the calculated font-size.\n      $rfs-fluid: calc(#{$min-width} + #{$variable-width}) #{$rfs-suffix};\n    }\n\n    // Rendering\n    @if $rfs-fluid == null {\n      // Only render static font-size if no fluid font-size is available\n      font-size: $rfs-static;\n    }\n    @else {\n      $mq-value: null;\n\n      // RFS breakpoint formatting\n      @if $rfs-breakpoint-unit == em or $rfs-breakpoint-unit == rem {\n        $mq-value: #{$rfs-breakpoint / $rfs-rem-value}#{$rfs-breakpoint-unit};\n      }\n      @else if $rfs-breakpoint-unit == px {\n        $mq-value: #{$rfs-breakpoint}px;\n      }\n      @else {\n        @error \"`#{$rfs-breakpoint-unit}` is not a valid unit for $rfs-breakpoint-unit. Use `px`, `em` or `rem`.\";\n      }\n\n      @if $rfs-class == \"disable\" {\n        // Adding an extra class increases specificity,\n        // which prevents the media query to override the font size\n        &,\n        .disable-responsive-font-size &,\n        &.disable-responsive-font-size {\n          font-size: $rfs-static;\n        }\n      }\n      @else {\n        font-size: $rfs-static;\n      }\n\n      @if $rfs-two-dimensional {\n        @media (max-width: #{$mq-value}), (max-height: #{$mq-value}) {\n          @if $rfs-class == \"enable\" {\n            .enable-responsive-font-size &,\n            &.enable-responsive-font-size {\n              font-size: $rfs-fluid;\n            }\n          }\n          @else {\n            font-size: $rfs-fluid;\n          }\n\n          @if $rfs-safari-iframe-resize-bug-fix {\n            // stylelint-disable-next-line length-zero-no-unit\n            min-width: 0vw;\n          }\n        }\n      }\n      @else {\n        @media (max-width: #{$mq-value}) {\n          @if $rfs-class == \"enable\" {\n            .enable-responsive-font-size &,\n            &.enable-responsive-font-size {\n              font-size: $rfs-fluid;\n            }\n          }\n          @else {\n            font-size: $rfs-fluid;\n          }\n\n          @if $rfs-safari-iframe-resize-bug-fix {\n            // stylelint-disable-next-line length-zero-no-unit\n            min-width: 0vw;\n          }\n        }\n      }\n    }\n  }\n}\n\n// The font-size & responsive-font-size mixin uses RFS to rescale font sizes\n@mixin font-size($fs, $important: false) {\n  @include rfs($fs, $important);\n}\n\n@mixin responsive-font-size($fs, $important: false) {\n  @include rfs($fs, $important);\n}\n","/*!\n * Bootstrap Reboot v4.3.1 (https://getbootstrap.com/)\n * Copyright 2011-2019 The Bootstrap Authors\n * Copyright 2011-2019 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)\n */\n*,\n*::before,\n*::after {\n  box-sizing: border-box;\n}\n\nhtml {\n  font-family: sans-serif;\n  line-height: 1.15;\n  -webkit-text-size-adjust: 100%;\n  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\n}\n\narticle, aside, figcaption, figure, footer, header, hgroup, main, nav, section {\n  display: block;\n}\n\nbody {\n  margin: 0;\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, \"Noto Sans\", sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\";\n  font-size: 1rem;\n  font-weight: 400;\n  line-height: 1.5;\n  color: #212529;\n  text-align: left;\n  background-color: #fff;\n}\n\n[tabindex=\"-1\"]:focus {\n  outline: 0 !important;\n}\n\nhr {\n  box-sizing: content-box;\n  height: 0;\n  overflow: visible;\n}\n\nh1, h2, h3, h4, h5, h6 {\n  margin-top: 0;\n  margin-bottom: 0.5rem;\n}\n\np {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nabbr[title],\nabbr[data-original-title] {\n  text-decoration: underline;\n  text-decoration: underline dotted;\n  cursor: help;\n  border-bottom: 0;\n  text-decoration-skip-ink: none;\n}\n\naddress {\n  margin-bottom: 1rem;\n  font-style: normal;\n  line-height: inherit;\n}\n\nol,\nul,\ndl {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nol ol,\nul ul,\nol ul,\nul ol {\n  margin-bottom: 0;\n}\n\ndt {\n  font-weight: 700;\n}\n\ndd {\n  margin-bottom: .5rem;\n  margin-left: 0;\n}\n\nblockquote {\n  margin: 0 0 1rem;\n}\n\nb,\nstrong {\n  font-weight: bolder;\n}\n\nsmall {\n  font-size: 80%;\n}\n\nsub,\nsup {\n  position: relative;\n  font-size: 75%;\n  line-height: 0;\n  vertical-align: baseline;\n}\n\nsub {\n  bottom: -.25em;\n}\n\nsup {\n  top: -.5em;\n}\n\na {\n  color: #007bff;\n  text-decoration: none;\n  background-color: transparent;\n}\n\na:hover {\n  color: #0056b3;\n  text-decoration: underline;\n}\n\na:not([href]):not([tabindex]) {\n  color: inherit;\n  text-decoration: none;\n}\n\na:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {\n  color: inherit;\n  text-decoration: none;\n}\n\na:not([href]):not([tabindex]):focus {\n  outline: 0;\n}\n\npre,\ncode,\nkbd,\nsamp {\n  font-family: SFMono-Regular, Menlo, Monaco, Consolas, \"Liberation Mono\", \"Courier New\", monospace;\n  font-size: 1em;\n}\n\npre {\n  margin-top: 0;\n  margin-bottom: 1rem;\n  overflow: auto;\n}\n\nfigure {\n  margin: 0 0 1rem;\n}\n\nimg {\n  vertical-align: middle;\n  border-style: none;\n}\n\nsvg {\n  overflow: hidden;\n  vertical-align: middle;\n}\n\ntable {\n  border-collapse: collapse;\n}\n\ncaption {\n  padding-top: 0.75rem;\n  padding-bottom: 0.75rem;\n  color: #6c757d;\n  text-align: left;\n  caption-side: bottom;\n}\n\nth {\n  text-align: inherit;\n}\n\nlabel {\n  display: inline-block;\n  margin-bottom: 0.5rem;\n}\n\nbutton {\n  border-radius: 0;\n}\n\nbutton:focus {\n  outline: 1px dotted;\n  outline: 5px auto -webkit-focus-ring-color;\n}\n\ninput,\nbutton,\nselect,\noptgroup,\ntextarea {\n  margin: 0;\n  font-family: inherit;\n  font-size: inherit;\n  line-height: inherit;\n}\n\nbutton,\ninput {\n  overflow: visible;\n}\n\nbutton,\nselect {\n  text-transform: none;\n}\n\nselect {\n  word-wrap: normal;\n}\n\nbutton,\n[type=\"button\"],\n[type=\"reset\"],\n[type=\"submit\"] {\n  -webkit-appearance: button;\n}\n\nbutton:not(:disabled),\n[type=\"button\"]:not(:disabled),\n[type=\"reset\"]:not(:disabled),\n[type=\"submit\"]:not(:disabled) {\n  cursor: pointer;\n}\n\nbutton::-moz-focus-inner,\n[type=\"button\"]::-moz-focus-inner,\n[type=\"reset\"]::-moz-focus-inner,\n[type=\"submit\"]::-moz-focus-inner {\n  padding: 0;\n  border-style: none;\n}\n\ninput[type=\"radio\"],\ninput[type=\"checkbox\"] {\n  box-sizing: border-box;\n  padding: 0;\n}\n\ninput[type=\"date\"],\ninput[type=\"time\"],\ninput[type=\"datetime-local\"],\ninput[type=\"month\"] {\n  -webkit-appearance: listbox;\n}\n\ntextarea {\n  overflow: auto;\n  resize: vertical;\n}\n\nfieldset {\n  min-width: 0;\n  padding: 0;\n  margin: 0;\n  border: 0;\n}\n\nlegend {\n  display: block;\n  width: 100%;\n  max-width: 100%;\n  padding: 0;\n  margin-bottom: .5rem;\n  font-size: 1.5rem;\n  line-height: inherit;\n  color: inherit;\n  white-space: normal;\n}\n\nprogress {\n  vertical-align: baseline;\n}\n\n[type=\"number\"]::-webkit-inner-spin-button,\n[type=\"number\"]::-webkit-outer-spin-button {\n  height: auto;\n}\n\n[type=\"search\"] {\n  outline-offset: -2px;\n  -webkit-appearance: none;\n}\n\n[type=\"search\"]::-webkit-search-decoration {\n  -webkit-appearance: none;\n}\n\n::-webkit-file-upload-button {\n  font: inherit;\n  -webkit-appearance: button;\n}\n\noutput {\n  display: inline-block;\n}\n\nsummary {\n  display: list-item;\n  cursor: pointer;\n}\n\ntemplate {\n  display: none;\n}\n\n[hidden] {\n  display: none !important;\n}\n\n/*# sourceMappingURL=bootstrap-reboot.css.map */","// Hover mixin and `$enable-hover-media-query` are deprecated.\n//\n// Originally added during our alphas and maintained during betas, this mixin was\n// designed to prevent `:hover` stickiness on iOS-an issue where hover styles\n// would persist after initial touch.\n//\n// For backward compatibility, we've kept these mixins and updated them to\n// always return their regular pseudo-classes instead of a shimmed media query.\n//\n// Issue: https://github.com/twbs/bootstrap/issues/25195\n\n@mixin hover {\n  &:hover { @content; }\n}\n\n@mixin hover-focus {\n  &:hover,\n  &:focus {\n    @content;\n  }\n}\n\n@mixin plain-hover-focus {\n  &,\n  &:hover,\n  &:focus {\n    @content;\n  }\n}\n\n@mixin hover-focus-active {\n  &:hover,\n  &:focus,\n  &:active {\n    @content;\n  }\n}\n"]}


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/test/PeerJsServer.Demo/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.min.css:
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1 | /*!
2 |  * Bootstrap Grid v4.3.1 (https://getbootstrap.com/)
3 |  * Copyright 2011-2019 The Bootstrap Authors
4 |  * Copyright 2011-2019 Twitter, Inc.
5 |  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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