I'm trying to set up a .Net client to send messages to my signalR hub from my service layer. I'm following this guide: http://www.asp.net/signalr/overview/signalr-20/hubs-api/hubs-api-guide-net-client#callserver
This is what I have:
_hubConnection = new HubConnection(_baseUrl); // "http://localhost:3806"
_hubProxy = _hubConnection.CreateHubProxy("AppHub");
_hubConnection.Start().Wait();
The hub lives inside of the same project - it's an MVC application with forms authentication.
I can never get past the .Wait() call, it always errors out with the following:
Message=Unexpected character encountered while parsing value: <. Path '', line 0, position 0.
Source=Newtonsoft.Json
More trace:
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value)
at Microsoft.AspNet.SignalR.Client.Transports.TransportHelper.b_1(String
raw)
at Microsoft.AspNet.SignalR.TaskAsyncHelper.<>c_DisplayClass192.<Then>b__17(Task
1
t)
at Microsoft.AspNet.SignalR.TaskAsyncHelper.TaskRunners2.<>c__DisplayClass3a.<RunTask>b__39(Task
1
t)
I have AppHub:
public class AppHub : Hub {
What am I doing wrong?
Since you are using Forms Authentication and I cannot see that you are providing any credentials when you construct your HubConnection, that might be your problem. This page talks of how to setup a SignalR connection using Forms Authentication:
http://www.asp.net/signalr/overview/signalr-20/security/hub-authorization
class Program
{
static void Main(string[] args)
{
var connection = new HubConnection("http://www.contoso.com/");
Cookie returnedCookie;
Console.Write("Enter user name: ");
string username = Console.ReadLine();
Console.Write("Enter password: ");
string password = Console.ReadLine();
var authResult = AuthenticateUser(username, password, out returnedCookie);
if (authResult)
{
connection.CookieContainer = new CookieContainer();
connection.CookieContainer.Add(returnedCookie);
Console.WriteLine("Welcome " + username);
}
else
{
Console.WriteLine("Login failed");
}
}
private static bool AuthenticateUser(string user, string password, out Cookie authCookie)
{
var request = WebRequest.Create("https://www.contoso.com/RemoteLogin") as HttpWebRequest;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.CookieContainer = new CookieContainer();
var authCredentials = "UserName=" + user + "&Password=" + password;
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(authCredentials);
request.ContentLength = bytes.Length;
using (var requestStream = request.GetRequestStream())
{
requestStream.Write(bytes, 0, bytes.Length);
}
using (var response = request.GetResponse() as HttpWebResponse)
{
authCookie = response.Cookies[FormsAuthentication.FormsCookieName];
}
if (authCookie != null)
{
return true;
}
else
{
return false;
}
}
}
RemoteLogin page:
using System;
using System.Web.Security;
namespace SignalRWithConsoleChat
{
public partial class RemoteLogin : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string username = Request["UserName"];
string password = Request["Password"];
bool result = Membership.ValidateUser(username, password);
if (result)
{
FormsAuthentication.SetAuthCookie(username, false);
}
}
}
}
As an alternative solution to the problem, you may want to exclude Signalr from the paths which require authentication:
<location path="signalr">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
i running proxy application on my system and proxy server return a HTML page for web requests! i turn off proxy and works!