restwebclientwebclient.uploaddata

Duplicate webClient requests sent at exactly the same time from ajax call

The problem I am facing is that the webClient.UploadData method is firing twice instantly from ajax request. But the same webClient.UploadData method is firing only once when invoked from aspx page. From the logs I can see the time of both the requests sent is exactly the same.. 2016-06-23 05:54:48.477

Below is the code snippet -

var DTO = JSON.stringify({Date: date, Month: month, AgeRange: ageRange, MethodName: "Enroll" });

$.ajax({
   type: "POST",
   contentType: "application/json; charset=utf-8",
   url: "/mypath/TasksHandler.ashx",
   data: DTO,
   async: true,
   success: function(result) {
   ......
   }

TasksHander will call the below method -

using (var client = new WebClient())
{
  client.Headers[HttpRequestHeader.ContentType] = "application/json";
  client.Headers[HttpRequestHeader.Accept] = "application/json";
  var data = Encoding.UTF8.GetBytes(dataInput);
  byte[] result = client.UploadData(url, "POST", data);
  output = Encoding.UTF8.GetString(result, 0, result.Length);
 }

My speculation is this could be due to setting of async property to true in ajax call? Please let know if any thoughts on this.

Solution

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