UDP receive in asp.net web application SignalR

Question

I want to receive a realtime data in a web application and display that realtime data in web form. I have heard about the signalR. I tried to put UDP receive codes as shown below in the hub class. But it gives error . Please suggest any solution so that in web application I receive udp packet on some port and push that data to clients in brouser in realtime.

UdpClient receivingUdpClient = new UdpClient(11000);
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
Byte[] receiveBytes = receivingUdpClient.Receive(ref RemoteIpEndPoint);
string returnData = Encoding.ASCII.GetString(receiveBytes);

Answer 1

Hi, @cdeo ,

SignalR uses Websockets to communicate between the clients and the server. SignalR allows messages to be sent to all connections associated with a specific user, as well as to named groups of connections(like UDP broadcast).

Users in SignalR

public Task SendPrivateMessage(string user, string message)  
{  
    return Clients.User(user).SendAsync("ReceiveMessage", message);  
}  

Groups in SignalR

public async Task AddToGroup(string groupName)  
{  
    await Groups.AddToGroupAsync(Context.ConnectionId, groupName);  
  
    await Clients.Group(groupName).SendAsync("Send", $"{Context.ConnectionId} has joined the group {groupName}.");  
}  

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Best Regards,
Michael Wang