User-587269734 posted
Help please !!!
I am relatively new to asp.net and have spent the past 3 days trying to get a simple version of signalR configured in my C# WCF service. But I seem to be going around in circles. The first problem is confusion about where the different elements
or signalR need to be loaded/created. Maybe it is best for me to give my understanding of the required setup.
My setup is as follows:
- My Service application is a C# WCF service which runs in IIS8 on a windows 2012R2 server. ("The Service")
- My Client application is a C# WebForm application running on the same windows 2012R2 server ("The Client")
- The Client application has a JavaScript file called myJavaScript.js ("The JavaScript File")
- Users access the service via the "CLIENT" running on a web browser, usually Chrome ("The Browser")
- Failed to load resource: the server responded with a status of 404 (Not Found)
Below are the changes that I have made to "The Service", "The Client" & "The JavaScript file" in my attempts to send a simple message from the Service to the Browser via signalR.
Changes to "The Service" (application name DCRules2)
- Downloaded from nuget Microsoft.AspNet.SignalR v2.2.2
- Downloaded from nuget Microsoft.AspNet.SignalR,Core v2.2.2
- Downloaded from nuget Microsoft.AspNet.SignalRJS v2.2.2
- Downloaded from nuget Microsoft.AspNet.SignalR.SystemWeb v2.2.2
- Downloaded from nuget Microsoft.Owin.SystemWeb v3.1.0
- Downloaded from nuget Microsoft.Owin v3.1.0
- Downloaded from nuget Microsoft.Owin.Security v3.1.0
- Downloaded from nuget Owin v1.0.0
Added an Owin Startup Class Startup1.cs
using System;
using System.Threading.Tasks;
using Microsoft.AspNet.SignalR;
using Microsoft.Owin;
using Owin;
using DCRules2;
[assembly: OwinStartup(typeof(DCRules2.Startup1))]
namespace DCRules2
{
public class Startup1
{
public void Configuration(IAppBuilder app)
{
// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=316888
//app.MapSignalR();
//app.MapSignalR("/~/signalr", new HubConfiguration());
var hubConfiguration = new HubConfiguration();
app.MapSignalR("/signalr", hubConfiguration);
}
}
}
Added Hub class TiosHub.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;
namespace DCRules2
{
//[HubName("tios")]
public class TiosHub : Hub
{
// Tell all of the clients that there is an announcement
public void Announce(string message)
{
Clients.All.Announce(message);
}
}
}
Rebuilt the service and restarted IIS8
++++++++++++++++++++++++++++++++++++++++++++++++
Changes to "The Client" (application name DCRulesWeb01)
- Downloaded from nuget Microsoft.AspNet.SignalR.Client v2.2.2
- Downloaded from nuget Microsoft.Owin.SystemWeb v3.1.0
- Downloaded from nuget Microsoft.Owin v3.1.0
- Downloaded from nuget Owin v1.0.0
I added the javascript references to Webform1.aspx
<script src="~/Scripts/jquery.signalR-2.2.2.js">
</script> <script src="~/signalr/hubs"></script>
I added an announce() method to Webform1.aspx.cs to test signalR
// Test SignalR
public void Announce(string message)
{
string msg = message;
}
++++++++++++++++++++++++++++++++++++++++++++++++
Changes to "The JavaScript file" (application name DCRulesWeb01)
File myJavaScript.js is a clientside javascript file which I inserted the following code into:
// SignalR configuration
$(function () {
var tioshub = $.connection.tiosHub;
$.connection.hub.start().done(function () { });
tioshub.client.announce = function (message) {
console.info('Received message: ' +message);
}
});
finally I re-built the Client application and published the Project and re-started IIS
When I run the service and press F12 , I get the following errors
- Failed to Load resource - the server responded with a status of 404 (not found) jquery.signalR-2.2.2.js
- Failed to Load resource - the server responded with a status of 404 (not found) hubs
- Uncaught TypeError: Cannot read property 'tiosHub' of undefined
One thing I had expected to see was the creation of a folder signalr/hubs which has not happened. I am assuming that this is related to 404 error above.
Can anyone explain what I might be doing wrong ?
