Need an example of HTML5 SSE with .aspx page in server?

Question

I server side how we can access and response to eventSource ?

Manas Mohapatra · Answer

Go through below steps: Code for ASPX Page: Server Sent Events function initialize() { if (window.EventSource == undefined) { document.getElementById('targetDiv').innerHTML = "Your browser doesn't support Server Side Events."; return; } var source = new EventSource('PushTimeHandler.ashx'); source.onopen = function (event) { document.getElementById('targetDiv').innerHTML += 'Connection Opened. '; }; source.onerror = function (event) { if (event.eventPhase == EventSource.CLOSED) { document.getElementById('targetDiv').innerHTML += 'Connection Closed. '; } }; source.onmessage = function (event) { document.getElementById('targetDiv').innerHTML += event.data + ' '; }; } Code for ashx file using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace ServerSentEvents { /// /// Summary description for PushTimeHandler /// public class PushTimeHandler : IHttpHandler { public void ProcessRequest(HttpContext context) { DateTime startDate = DateTime.Now; context.Response.ContentType = "text/event-stream"; while (startDate.AddMinutes(1) > DateTime.Now) { context.Response.Write(string.Format("data: {0}

", DateTime.Now.ToString())); context.Response.Flush(); System.Threading.Thread.Sleep(1000); } context.Response.Close(); } public bool IsReusable { get { return false; } } } }