[Mono-bugs] [Bug 45959][Cri] New - UDP Sockets: Multicast and Broadcast Datagrams are not received

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Changed by giuseppe.greco@agamura.com.

http://bugzilla.ximian.com/show_bug.cgi?id=45959

--- shadow/45959	Tue Jul  8 01:50:34 2003
+++ shadow/45959.tmp.29751	Tue Jul  8 01:50:34 2003
@@ -0,0 +1,184 @@
+Bug#: 45959
+Product: Mono/Class Libraries
+Version: unspecified
+OS: Red Hat 9.0
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Critical
+Component: System
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: giuseppe.greco@agamura.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Summary: UDP Sockets: Multicast and Broadcast Datagrams are not received
+
+UDP sockets don't receive Multicast and Broadcast
+datagrams - with Unicast datagrams there are no
+problems.
+
+Steps to reproduce the problem:
+1. Write a sender like this:
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+
+public class MySender
+{
+  private static bool sent = false;
+
+  public static void Main()
+  {
+    byte[] data = new byte[10];
+    for (byte i = 0; i < 10; i++) {
+      data[i] = (byte) i;
+    }
+
+    IPEndPoint ipEndPoint=
+      new IPEndPoint(IPAddress.Parse("224.100.0.1"), 9000);
+
+    Socket socket = new Socket(
+      AddressFamily.InterNetwork,
+      SocketType.Dgram,
+      ProtocolType.Udp);
+
+    socket.SetSocketOption(
+      SocketOptionLevel.IP,
+      SocketOptionName.AddMembership,
+      new MulticastOption(ipEndPoint.Address));
+
+    // 
+    // uncomment this to test broadcast
+    //
+    // socket.SetSocketOption(
+    //   SocketOptionLevel.Socket,
+    //   SocketOptionName.Broadcast,
+    //   1);
+
+    EndPoint endPoint = (EndPoint) ipEndPoint;
+    socket.BeginSendTo(
+      data,
+      0,
+      data.Length,
+      SocketFlags.None,
+      endPoint,
+      new AsyncCallback(new MySender().AsyncSend),
+      socket);
+
+    while (!sent) {
+      Thread.Sleep(10);
+    }
+  }
+
+  void AsyncSend(IAsyncResult ar)
+  {
+    Socket socket = (Socket) ar.AsyncState;
+    socket.EndSendTo(ar);
+    sent = true;
+  }
+}
+
+
+2. Write a receiver like this:
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+
+public class MyReceiver
+{
+  private byte[] data;
+  private EndPoint endPoint;
+
+  public static void Main()
+  {
+    MyReceiver myReceiver = new MyReceiver();
+    myReceiver.Send();
+  }
+
+  private void Send()
+  {
+    IPEndPoint ipEndPoint=
+      new IPEndPoint(IPAddress.Parse("224.100.0.1"), 9000);
+
+    Socket socket = new Socket(
+      AddressFamily.InterNetwork,
+      SocketType.Dgram,
+      ProtocolType.Udp);
+
+    socket.Bind(new IPEndPoint(IPAddress.Any, 9000));
+
+    socket.SetSocketOption(
+      SocketOptionLevel.IP,
+      SocketOptionName.AddMembership,
+      new MulticastOption(ipEndPoint.Address));
+
+    endPoint = (EndPoint) ipEndPoint;
+
+    while (true) {
+      if (socket.Poll(250000, SelectMode.SelectRead)) {
+        data = new byte[socket.Available];
+        socket.BeginReceiveFrom(
+          data,
+          0,
+          data.Length,
+          SocketFlags.None,
+          ref endPoint,
+          new AsyncCallback(AsyncReceive),
+          socket);
+      }
+    }
+  }
+
+  private void AsyncReceive(IAsyncResult ar)
+  {
+    Socket socket = (Socket) ar.AsyncState;
+
+    if (0 < socket.EndReceiveFrom(ar, ref endPoint)) {
+      foreach (byte b in data) {
+        Console.Write(b.ToString("X"));
+      }
+      Console.WriteLine("");
+    }
+  }
+}
+
+
+3. Compile the two applications:
+
+   mcs -t:exe -out:receiver.exe receiver.cs
+   mcs -t:exe -out:sender.exe sender.cs
+ 
+
+4. Start the receiver:
+
+   mono ./receiver.exe
+
+
+5. Start the sender:
+
+   mono ./sender.exe 
+
+
+Actual Results:
+Multicast and Broadcast datagrams are
+not received. Unicast datagrams are
+received.
+
+
+Expected Results:
+Multicast and Broadcast datagrams should
+be received.
+
+
+How often does this happen? 
+Always.
+
+
+Additional Information:
+The code above works fine with .NET on Windows.