LASAPlatform/OpenAuth.App/BaseApp/ImMsgManager/ChatsHub.cs

using DocumentFormat.OpenXml.InkML;
using DocumentFormat.OpenXml.Spreadsheet;
using Microsoft.AspNetCore.SignalR;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OpenAuth.App.BaseApp.ImMsgManager
{
    public class ChatsHub : Hub
    {
        #region 重载Hub方法
        /// <summary>
        /// 建立连接
        /// </summary>
        /// <returns></returns>
        public override async Task OnConnectedAsync()
        {
            //await AddOnline();
            await base.OnConnectedAsync();
        }
        /// <summary>
        /// 断开连接
        /// </summary>
        /// <param name="exception">异常信息</param>
        /// <returns></returns>
        public override async Task OnDisconnectedAsync(Exception exception)
        {
            await RemoveOnline();
            await base.OnDisconnectedAsync(exception);
        }
        #endregion

        private static readonly ConcurrentDictionary<string, string> clientIdMap =
            new ConcurrentDictionary<string, string>();

        #region 客户端操作
        ///// <summary>
        ///// 添加在线用户
        ///// </summary>
        //public async Task AddOnline()
        //{
        //}
        /// <summary>
        /// 移除在线用户
        /// </summary>
        public async Task RemoveOnline()
        {
            string clientId = Context.ConnectionId;
            clientIdMap.TryGetValue(clientId, out string userId);
            await Groups.RemoveFromGroupAsync(clientId, userId);
        }
        /// <summary>
        /// 发送消息
        /// </summary>
        /// <param name="myUserId">我的UserId</param>
        /// <param name="toUserId">对方UserId</param>
        /// <param name="msg">消息</param>
        /// <param name="isSystem">是否系统消息0不是1是</param>
        public async Task SendMsg(string myUserId, string toUserId, string msg, string id, int isSystem)
        {
            await Clients.Group(toUserId).SendAsync("RevMsg", myUserId, msg, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), id, isSystem);
        }


        public async Task SendInfo(string userId)
        {
            string clientId = Context.ConnectionId;
            clientIdMap.GetOrAdd(clientId, userId);
            await Groups.AddToGroupAsync(clientId, userId);
        }

        #endregion

    }
}