Multiple ajax to c# webmethod calls

Question

I have a jquery ajax call to a c# asmx web method, which does some processing,and internally calls more api's \ DB operation ,etc etc taking approx 20-30 seconds

WEB METHOD

[WebMethod]
public void dummy()
{
    File.Create(@"C:\test\test" + DateTime.Now.Millisecond.ToString() + ".txt");
    System.Threading.Thread.Sleep(60000);
}

AJAX CALL

$.ajax(
     {
         url:Service.asmx/dummy",
         contentType: "application/json; charset=utf-8",
         dataType: "json",
         type: "POST",
         success: function (strData) {
             alert('done');
         }
    });

The ajax call is within a loop which is fired 2 times, but the web method gets called only Once, so i tried async: false, then web method gets hit twice but after the 60 seconds delay.

What am i doing wrong ?

Answer 1

Remove the delay by System.Threading.Thread.Sleep(60000) in code behind and send the second ajax call after receiving the response from the server side.

$.ajax(
     {
         url:Service.asmx/dummy",
         contentType: "application/json; charset=utf-8",
         dataType: "json",
         type: "POST",
         success: function (strData) {
             alert('done');
             //send second call here
         }
         error:  function (jqXHR, textStatus, errorThrown) {
             //send second call here if required.
         }
    });

If you do not have any synchronization problem for simultaneous call then you can remove delay and send multiple call simultaneouly.