1.新建WebApi 2.安装Microsoft.AspNetCore.SignalR 3.新建一个集线器和消息类 using Microsoft.AspNetCore.SignalR; using System.Threading.Tasks; namespace WebApi.Chat { public class ChatHub : Hub { //SendMsg用于前端调用 public Task SendMsg(ChatMessageInfo info) { //在客户端实现此处的Sh…