修复不能客户端name，tag属性显示中文的乱码的问题

AgileConfig.Server.Apisite/Websocket/WebsocketHandlerMiddleware.cs

@@ -7,6 +7,7 @@ using System.Net.WebSockets;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Web;
 using AgileConfig.Server.Apisite.Filters;
 using AgileConfig.Server.IService;
 using Microsoft.AspNetCore.Http;
@@ -40,6 +41,7 @@ namespace AgileConfig.Server.Apisite.Websocket
                 {
                     if (!await appBasicAuth.ValidAsync(context.Request))
                     {
+                        context.Response.StatusCode = 401;
                         await context.Response.WriteAsync("basic auth failed .");
                         return;
                     }
@@ -51,7 +53,15 @@ namespace AgileConfig.Server.Apisite.Websocket
                     }
                     WebSocket webSocket = await context.WebSockets.AcceptWebSocketAsync();
                     var name = context.Request.Headers["client_name"];
+                    if (!string.IsNullOrEmpty(name))
+                    {
+                        name = HttpUtility.UrlDecode(name);
+                    }
                     var tag = context.Request.Headers["client_tag"];
+                    if (!string.IsNullOrEmpty(tag))
+                    {
+                        tag = HttpUtility.UrlDecode(tag);
+                    }
                     var clientIp = GetRemoteIp(context.Request);
 
                     var client = new WebsocketClient()
@@ -75,6 +85,7 @@ namespace AgileConfig.Server.Apisite.Websocket
                     {
                         _logger.LogError(ex, "Handle websocket client {0} err .", client.Id);
                         await _websocketCollection.RemoveClient(client, WebSocketCloseStatus.Empty, ex.Message);
+                        context.Response.StatusCode = 500;
                         await context.Response.WriteAsync("closed");
                     }
                 }