iframe-proxy | Sunbelt Computer Software

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﻿// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Diagnostics.Contracts;
using System.Web.Http.Properties;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;
using Microsoft.AspNet.SignalR.Infrastructure;
namespace System.Web.Http
    /// <summary>
    /// Defines a base class for <see cref="ApiController"/> that exposes functionality for calling back
    /// to clients connected to a particular SignalR hub.
    /// </summary>
    [CLSCompliant(false)]
    public abstract class HubControllerBase : ApiController
        private IConnectionManager _connectionManager;
        /// <summary>
        /// Initializes a new instance of the <see cref="HubControllerBase" /> class.
        /// </summary>
        protected HubControllerBase()
        /// <summary>
        /// Gets an <see cref="IHubConnectionContext"/> that represents the clients connected to the hub.
        /// </summary>
        public IHubConnectionContext Clients
                if (HubContext == null)
                    throw Error.InvalidOperation(SRResources.NullHubContext, GetType().Name);
                return HubContext.Clients;
        /// <summary>
        /// Gets the <see cref="IGroupManager"/> for the hub.
        /// </summary>
        public IGroupManager Groups
                if (HubContext == null)
                    throw Error.InvalidOperation(SRResources.NullHubContext, GetType().Name);
                return HubContext.Groups;
        /// <summary>
        /// Gets the <see cref="IHubContext"/> for the associated hub.
        /// </summary>
        protected abstract IHubContext HubContext
            get;
        /// <summary>
        /// Gets the <see cref="IConnectionManager"/> used to resolve hub contexts. The connection manager will
        /// be resolved by the controller's <see cref="HttpConfiguration"/> dependency resolver if the service is
        /// available. Otherwise, the default GlobalHost <see cref="IConnectionManager"/> will be returned instead.
        /// </summary>
        protected IConnectionManager ConnectionManager
                if (_connectionManager == null)
                    _connectionManager = ResolveConnectionManager();
                return _connectionManager;
        private IConnectionManager ResolveConnectionManager()
            if (Configuration != null)
                Contract.Assert(Configuration.DependencyResolver != null);
                IConnectionManager connectionManager = Configuration.DependencyResolver.GetService(typeof(IConnectionManager)) as IConnectionManager;
                if (connectionManager != null)
                    return connectionManager;
            // If connection manager cannot be resolved by DependencyResolver, use the default connection manager instead.
            return GlobalHost.ConnectionManager;

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