SignalR - 建立连接以相当长的时间 [英] SignalR - Establishing Connection Taking quite a long time

问题描述

我刚开始与SignalR工作的实时更新。我需要在建立连接之后执行一些操作。所以我已经写在.done code（）方法。

I have just started working with SignalR for realtime update. I need to perform some operation after the connection is established. so I have written that code in .done() method.

我现在面临的问题是：建立连接时需要一些时间，因为，我不能够执行它，我打算操作。继我的JS code片段。

The issue I am facing is : establishing connection takes some time and due to that I am not able to perform the operation which I am intended to. Following code snippet of my js.

   $(function () {
   // Proxy created on the fly  
    projectHub = $.connection.projectHub;
    $.connection.hub.logging = true;
    // Start the connection
    $.connection.hub.start().done(function () {
    $("#lnkFollowProject").live("click", function () {
        console.log("Follow click");
        projectHub.server.followProject(projectId, currentLoggedInUserId);
     });
     $(".lnkUnfollowProject").live("click", function () {
        console.log("Unfollow click");
        projectHub.server.unfollowProject(projectId, currentLoggedInUserId);
      });     });     });

我不知道为什么它是需要时间来建立连接。当我试着用简单的聊天应用程序，它工作得很好。我做了该网页许多其他功能，还利用基因敲除绑定。 （不用于上述功能）。我还搜查，发现这个杀毒即可受害者。我尝试禁用了太多，但没有收获。

I am not sure why it is taking time to establish connection. As i tried with simple chat application and it works well. I am doing many other functionality for that page and also using knockout for binding. (not for the above functionality). I have also searched this and found antivirus can be victim. I tried disabling that too but no gain.

我知道有一个解决方案，直到连接建立和上完成启用它，我可以禁用按钮。但我不希望用户限制。

I know one solution that I can disable button til connection is establish and on done enable it. But i don't want user to restrict.

请更新我，如果任何其他可能的问题。

Please update me if any other probable issues.

先谢谢了。

推荐答案

我对code性能的两个建议。

I have two suggestions about the code performance.

1）使用。对（）方法，而不是.live（）

1) Use .on() method instead of .live()

使用.live（）方法，因为jQuery的报价.delegate和方法。对的后续版本不再推荐。
    出现与使用.live（）的下列问题：

Using the .live() method is no longer recommended since the later versions of jQuery offer .delegate and .on methods. the following issues arise with the use of .live():

Ⅰ）的jQuery试图调用.live（）方法，这可能是耗时的大型文档之前检索由选择器指定的元素

I) jQuery attempts to retrieve the elements specified by the selector before calling the .live() method, which may be time-consuming on large documents.

二）由于所有.live（）事件在文档元素连接，它们的事件进行处理之前，时间最长和最慢的可能路径。

II) Since all .live() events are attached at the document element, events take the longest and slowest possible path before they are handled.

2）取单击事件出来.done（）方法，因为followProject和unfollowProject的方法都需要先点击事件虎自己。

2） Take click events out of .done() method, because "followProject" and "unfollowProject" methods both need click event to tiger themselves first.

见下文code：

$(function () {
            // Proxy created on the fly  
            projectHub = $.connection.projectHub;
            $.connection.hub.logging = true;
            // Start the connection
            $.connection.hub.start();

            $(document.body).on("click","#lnkFollowProject", function () {
               console.log("Follow click");
               projectHub.server.followProject(projectId, currentLoggedInUserId);
           });
           $(document.body).on("click",".lnkUnfollowProject", function () {    
               console.log("Unfollow click");
               projectHub.server.unfollowProject(projectId, currentLoggedInUserId);
           });       
        });

这篇关于SignalR - 建立连接以相当长的时间的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！