SignalR Console app example
To build on @dyslexicanaboko's answer for dotnet core, here is a client console application:
Create a helper class:
using System;
using Microsoft.AspNetCore.SignalR.Client;
namespace com.stackoverflow.SignalRClientConsoleApp
{
public class SignalRConnection
{
public async void Start()
{
var url = "http://signalr-server-url/hubname";
var connection = new HubConnectionBuilder()
.WithUrl(url)
.WithAutomaticReconnect()
.Build();
// receive a message from the hub
connection.On<string, string>("ReceiveMessage", (user, message) => OnReceiveMessage(user, message));
var t = connection.StartAsync();
t.Wait();
// send a message to the hub
await connection.InvokeAsync("SendMessage", "ConsoleApp", "Message from the console app");
}
private void OnReceiveMessage(string user, string message)
{
Console.WriteLine($"{user}: {message}");
}
}
}
Then implement in your console app's entry point:
using System;
namespace com.stackoverflow.SignalRClientConsoleApp
{
class Program
{
static void Main(string[] args)
{
var signalRConnection = new SignalRConnection();
signalRConnection.Start();
Console.Read();
}
}
}
The Self-Host now uses Owin. Checkout http://www.asp.net/signalr/overview/signalr-20/getting-started-with-signalr-20/tutorial-signalr-20-self-host to setup the server. It's compatible with the client code above.
Example for SignalR 2.2.1 (May 2017)
Server
Install-Package Microsoft.AspNet.SignalR.SelfHost -Version 2.2.1
[assembly: OwinStartup(typeof(Program.Startup))]
namespace ConsoleApplication116_SignalRServer
{
class Program
{
static IDisposable SignalR;
static void Main(string[] args)
{
string url = "http://127.0.0.1:8088";
SignalR = WebApp.Start(url);
Console.ReadKey();
}
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.UseCors(CorsOptions.AllowAll);
/* CAMEL CASE & JSON DATE FORMATTING
use SignalRContractResolver from
https://stackoverflow.com/questions/30005575/signalr-use-camel-case
var settings = new JsonSerializerSettings()
{
DateFormatHandling = DateFormatHandling.IsoDateFormat,
DateTimeZoneHandling = DateTimeZoneHandling.Utc
};
settings.ContractResolver = new SignalRContractResolver();
var serializer = JsonSerializer.Create(settings);
GlobalHost.DependencyResolver.Register(typeof(JsonSerializer), () => serializer);
*/
app.MapSignalR();
}
}
[HubName("MyHub")]
public class MyHub : Hub
{
public void Send(string name, string message)
{
Clients.All.addMessage(name, message);
}
}
}
}
Client
(almost the same as Mehrdad Bahrainy reply)
Install-Package Microsoft.AspNet.SignalR.Client -Version 2.2.1
namespace ConsoleApplication116_SignalRClient
{
class Program
{
private static void Main(string[] args)
{
var connection = new HubConnection("http://127.0.0.1:8088/");
var myHub = connection.CreateHubProxy("MyHub");
Console.WriteLine("Enter your name");
string name = Console.ReadLine();
connection.Start().ContinueWith(task => {
if (task.IsFaulted)
{
Console.WriteLine("There was an error opening the connection:{0}", task.Exception.GetBaseException());
}
else
{
Console.WriteLine("Connected");
myHub.On<string, string>("addMessage", (s1, s2) => {
Console.WriteLine(s1 + ": " + s2);
});
while (true)
{
Console.WriteLine("Please Enter Message");
string message = Console.ReadLine();
if (string.IsNullOrEmpty(message))
{
break;
}
myHub.Invoke<string>("Send", name, message).ContinueWith(task1 => {
if (task1.IsFaulted)
{
Console.WriteLine("There was an error calling send: {0}", task1.Exception.GetBaseException());
}
else
{
Console.WriteLine(task1.Result);
}
});
}
}
}).Wait();
Console.Read();
connection.Stop();
}
}
}
First of all, you should install SignalR.Host.Self on the server application and SignalR.Client on your client application by nuget :
PM> Install-Package SignalR.Hosting.Self -Version 0.5.2
PM> Install-Package Microsoft.AspNet.SignalR.Client
Then add the following code to your projects ;)
(run the projects as administrator)
Server console app:
using System;
using SignalR.Hubs;
namespace SignalR.Hosting.Self.Samples {
class Program {
static void Main(string[] args) {
string url = "http://127.0.0.1:8088/";
var server = new Server(url);
// Map the default hub url (/signalr)
server.MapHubs();
// Start the server
server.Start();
Console.WriteLine("Server running on {0}", url);
// Keep going until somebody hits 'x'
while (true) {
ConsoleKeyInfo ki = Console.ReadKey(true);
if (ki.Key == ConsoleKey.X) {
break;
}
}
}
[HubName("CustomHub")]
public class MyHub : Hub {
public string Send(string message) {
return message;
}
public void DoSomething(string param) {
Clients.addMessage(param);
}
}
}
}
Client console app:
using System;
using SignalR.Client.Hubs;
namespace SignalRConsoleApp {
internal class Program {
private static void Main(string[] args) {
//Set connection
var connection = new HubConnection("http://127.0.0.1:8088/");
//Make proxy to hub based on hub name on server
var myHub = connection.CreateHubProxy("CustomHub");
//Start connection
connection.Start().ContinueWith(task => {
if (task.IsFaulted) {
Console.WriteLine("There was an error opening the connection:{0}",
task.Exception.GetBaseException());
} else {
Console.WriteLine("Connected");
}
}).Wait();
myHub.Invoke<string>("Send", "HELLO World ").ContinueWith(task => {
if (task.IsFaulted) {
Console.WriteLine("There was an error calling send: {0}",
task.Exception.GetBaseException());
} else {
Console.WriteLine(task.Result);
}
});
myHub.On<string>("addMessage", param => {
Console.WriteLine(param);
});
myHub.Invoke<string>("DoSomething", "I'm doing something!!!").Wait();
Console.Read();
connection.Stop();
}
}
}