前端&后端：

互发消息流程打通

backend/IM_API/Hubs/ChatHub.cs

@@ -1,5 +1,6 @@
 using IM_API.Dtos;
 using IM_API.Interface.Services;
+using IM_API.Models;
 using IM_API.Tools;
 using Microsoft.AspNetCore.SignalR;
 using System.Security.Claims;
@@ -32,7 +33,7 @@ namespace IM_API.Hubs
             }
             await base.OnConnectedAsync();
         }
-        public async Task SendPrivateMessage(MessageBaseDto dto)
+        public async Task SendMessage(MessageBaseDto dto)
         {
             if (!Context.User.Identity.IsAuthenticated)
             {
@@ -41,8 +42,17 @@ namespace IM_API.Hubs
                 return;
             }
             var userIdStr = Context.User.FindFirstValue(ClaimTypes.NameIdentifier);
-            await _messageService.SendPrivateMessageAsync(int.Parse(userIdStr),dto.ReceiverId,dto);
-            await Clients.Users(dto.ReceiverId.ToString()).SendAsync("ReceiveMessage", dto);
+            MessageBaseDto msgInfo = null;
+            if(dto.ChatType.ToLower() == ChatType.PRIVATE.ToString().ToLower())
+            {
+                msgInfo = await _messageService.SendPrivateMessageAsync(int.Parse(userIdStr), dto.ReceiverId, dto);
+            }
+            else
+            {
+                msgInfo = await _messageService.SendGroupMessageAsync(int.Parse(userIdStr), dto.ReceiverId, dto);
+            }
+
+                await Clients.Users(dto.ReceiverId.ToString()).SendAsync("ReceiveMessage", msgInfo);
             return;
         }
     }