DatagramSocket MessageReceived event is not firing, a simple multicast receiver

Question

I am developing a windows universal app  and need to use ssdp discovery on a multicast. I am not able to create a listener using DataGramSocket. My code is simple and straight forward.

ConnectionProfile  netProfile = NetworkInformation.GetInternetConnectionProfile();

DatagramSocket socket = new DatagramSocket();

socket.MessageReceived += socket_MessageReceived;

await socket.BinddServiceNameAsync("",netProfile.NetworkAdapter);

socket.JoinMulticastGroup(new HostName("239.255.255.250"));

string message = "NOTIFY * HTTP /1.1 \r\n" +.... 

var stream = await socket.GetOutputStreamAsync(new HostName("239.255.255.250"), "1900");

var writer = new DataWriter(stream);

var data = Encoding.UTF8.GetBytes(message);

writer.WriteBytes(data);

await writer.StoreAsync();

async void socket_MessageReceived(DataSocket sender, DatagramSocketMessageReceivedEventArgs args)

{

 /// reading logic.

}

I could see message write is happening successfully and the peer device is responding with multiple response messages. I could see all these happening through wireshark. But my "messagereceived" event is not firing.

Then I created a simple receiver with UdpClient on the same windows 8 machine which works perfectly fine on receiving all ssdp messages.

Can somebody point out what am I doing wrong or is there a simple UdpClient available for window phone 8.1?

Regards,

JJ

 

Answer 1

or if anybody has a ssdp discovery  working sample code in windows phone 8.1 that would be really helpful. I found lot of samples over internet using DatagramSocket with multiple versions.. all of them has exact same problem. 

I am almost struck so any help is really appreciated.   

Answer 2

Jeff,

I have created this thread yesterday with my issue discretion.

NB: Just replying to your request for new thread in the other link

https://social.msdn.microsoft.com/Forums/windowsapps/en-US/bc77d405-90fc-476c-8c12-d3208d455680/ssdp-discovery-on-windows-store-app-not-reliable?forum=winappswithcsharp 

Answer 3

The server continuously receives datagram packets over a datagram socket. Each datagram packet received by the server indicates a client request for a quotation. When the server receives a datagram, it replies by sending a datagram packet that contains a one-line "quote of the moment" back to the client.

The client application in this example is fairly simple. It sends a single datagram packet to the server indicating that the client would like to receive a quote of the moment. The client then waits for the server to send a datagram packet in response.

Two classes implement the server application: QuoteServer and QuoteServerThread. A single class implements the client application: QuoteClient