[Mono-bugs] [Bug 79352][Wis] New - Problem with Socket.Poll method

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Changed by dmitryskey at hotmail.com.

http://bugzilla.ximian.com/show_bug.cgi?id=79352

--- shadow/79352	2006-09-11 06:41:30.000000000 -0400
+++ shadow/79352.tmp.22435	2006-09-11 06:41:30.000000000 -0400
@@ -0,0 +1,137 @@
+Bug#: 79352
+Product: Mono: Class Libraries
+Version: 1.0
+OS: Debian Woody
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: System
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: dmitryskey at hotmail.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Problem with Socket.Poll method
+
+Description of Problem:
+
+I try to check connection to the host during the specified timeout. The 
+Socket.Poll return true for the IP 1.1.1.1, timeout 5 seconds and 
+SelectMode.SelectWrite parameter. The sample compiled mcs and executed 
+under .Net Framework works fine. Mono 1.1.13, Debian Linux, VMWare 4.5.
+
+Steps to reproduce the problem:
+1.
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Collections;
+
+namespace ConsoleApplication1
+{
+	/// <summary>
+	/// Summary description for Class1.
+	/// </summary>
+	/// 
+
+	class Class1
+	{
+		/// <summary>
+		/// The main entry point for the application.
+		/// </summary>
+		[STAThread]
+		static void Main(string[] args)
+		{
+			//
+			// TODO: Add code to start application here
+			//
+
+			DateTime start = DateTime.Now;
+
+			try
+			{
+				CheckConnection("1.1.1.1", 8080, 5);
+			}
+			catch(Exception)
+			{
+				Console.Out.WriteLine("Test succeeded: " + 
+DateTime.Now.Subtract(start).TotalSeconds.ToString() + " seconds");
+				return;
+			}
+
+			Console.Out.WriteLine("Test failed: " + DateTime.Now.
+Subtract(start).TotalSeconds.ToString() + " seconds");
+			return;
+		}
+
+		public static void CheckConnection(string host, int port, int 
+timeout)
+		{
+			using(Socket sock = new Socket(AddressFamily.
+InterNetwork, SocketType.Stream, ProtocolType.Tcp))
+			{
+				bool isConnected = false;
+
+				IPHostEntry entries = Dns.GetHostByName(host);
+				foreach (IPAddress ipAddr in entries.AddressList)
+				{
+					sock.Blocking = false;
+					try
+					{
+						sock.Connect(new IPEndPoint(ipAddr, 
+port));
+					}
+					catch (SocketException ex)
+					{
+						Console.Out.WriteLine(ex.ErrorCode.
+ToString());
+						// ignore errors:
+						// Resource temporarily unavailable.
+						// Operation now in progress.
+						if (ex.ErrorCode != 10035 && ex.
+ErrorCode != 10036)
+							throw;
+
+					}
+
+					isConnected = sock.Poll(timeout * 1000000, 
+SelectMode.SelectWrite);
+					Console.Out.WriteLine(ipAddr.ToString() + ":" 
++ isConnected.ToString());
+				
+					if (isConnected)
+						break;
+				}
+
+				if (!isConnected)
+					throw new Exception();
+			}
+		}
+	}
+}
+
+Actual Results:
+
+10035
+1.1.1.1:True
+Test failed: 0.187176 seconds
+
+Expected Results:
+
+This code is working fine on .Net framework with the following output:
+
+10035
+1.1.1.1:False
+Test succeeded: 5,035739 seconds
+
+How often does this happen? 
+
+Very often (sometimes this test is passed well)
+
+Additional Information:
+
+Debian is running under VMWare 4.5