可以在jquery ajax中设置最大超时时间是多少?

问题描述：

$.ajax(
   url:"",
   async: true,
   timeout: 2*60*60*1000, //2 hours,
   success: function(){},
   error:  function(){}
);

在jQuery ajax请求中，如果我将超时值设置为一个大值，或者将其保留为空，那么它将一直等待直到服务器返回结果吗?

In a jQuery ajax request, if I set the timeout with a big value, or left it empty, will it keep waiting until the server returns a result?

实际上，我希望服务器将在1.5小时内响应，因此在我的js脚本中将超时设置为2小时，但是我发现Ajax可以在不到1小时的时间内跳转到错误功能(使用msg代码404).这意味着ajax提前中止等待.

Actually, I expect the server will response in 1.5 hours, so in my js script I　set timeout to 2 hours, but I found the Ajax jump to error function (with msg code 404) in less than 1 hour. It means ajax abort the waiting ahead of the time .

所以我想知道是否可以设置ajax的最大超时值?

So I wonder if there is a maximum timeout value can ajax be set?

答

我以前的回答是错误的(超时似乎太短了，我自己也不敢相信) 所以昨天我做了一个测试，创建了1GB的zip，然后限制了我与小提琴手的连接，并编写了这个aspx页面.

My previous answer was wrong (timeout just seemed to be to short and I couldn't believe it myself) so I have done a test yesterday, created 1GB zip then throttled my connection with fiddler and wrote this aspx page.

public partial class Ajaxtest : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Response.Clear();
            Response.BufferOutput = false; 
            Response.WriteFile("c://OnTheMoveOffline.zip");
        }
    }

然后，我运行了该脚本(有趣的是，提琴手在10秒内用OutOfMemory异常将其炸毁，但仍保持了响应).

then I ran this script (interestingly fiddler blew up with OutOfMemory exception within 10 seconds however response was held).

var f = function(){ 
var compareDate = new Date();
$.ajax({
 url : 'http://localhost:22037/FeatureDev/Ajaxtest.aspx',
success: function(data){ console.log(Math.abs(new Date() - compareDate));},
error : function(e){ console.log(Math.abs(new Date() - compareDate));},
timeout : 10000000
}).done(function() {
    console.log(Math.abs(new Date() - compareDate));
  })
  .fail(function() {
    console.log(Math.abs(new Date() - compareDate));
  })
  .always(function() {
    console.log(Math.abs(new Date() - compareDate));
  });}

它又回来了

9393076 
9393081 
9393081

9393076/1000〜9393(s)= 02:36:33

9393076/1000 ~ 9393(s) = 02:36:33

大约等于156分钟.

我将在本周末重复此测试，以查看在相同的时间后是否会超时，但到目前为止，它似乎超过了7200000(2 * 60 * 60 * 1000).

I will repeat this test this weekend to see if it will timeout after same amount of time, but so far it seems it is more than 7200000 (2*60*60*1000).

可以在jquery ajax中设置最大超时时间是多少?

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