I created a demo to exchange data in near real time from the cobra to a browser.
http://code.tinyclr.com/project/377/using-adobe-flex-to-have-live-data-on-web-site/
This was done using Adobe Flex. I want to now make the same thing using Silverlgiht 4.
I have it working in demo mode, which of course does not request the policy file.
When i run it in release mode I am getting the policy file request on port 943, and i am sending it back to the browser but it is still not making the data connection on port 4503. In fact it never even fires the OnConnect method.
I do not know what the deal is here with the policy file for silver light. I am sending this back as the policy file.
<?xml version="1.0" encoding="utf-8"?>
<access-policy>
<cross-domain-access>
<policy>
<allow-from>
<domain uri="*"/>
</allow-from>
<grant-to>
<socket-resource port="4502-4535" protocol="tcp"/>
</grant-to>
</policy>
</cross-domain-access>
</access-policy>
This is my silver light app.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Net.Sockets;
using System.Text;
using System.Threading;
namespace WebConnection
{
public partial class MainPage : UserControl
{
public Socket socket;
public DnsEndPoint endPoint;
static AutoResetEvent autoEvent = new AutoResetEvent(false);
public MainPage()
{
InitializeComponent();
Debugwindow.Text = "Trying To Connect\n";
try
{
endPoint = new DnsEndPoint("192.168.0.7", 4503);
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SocketAsyncEventArgs args = new SocketAsyncEventArgs();
args.SocketClientAccessPolicyProtocol = SocketClientAccessPolicyProtocol.Tcp;
args.UserToken = socket;
args.RemoteEndPoint = endPoint;
args.Completed += new EventHandler<SocketAsyncEventArgs>(OnConnect);
socket.ConnectAsync(args);
}
catch (Exception a)
{
Debugwindow.Text += "Exception\n";
Debugwindow.Text += a.ToString();
}
}
public void OnConnect(object sender, SocketAsyncEventArgs e)
{
if (e.SocketError != SocketError.Success)
{
// this is an error condition!
// check what error happened and what it means:
// http://msdn.microsoft.com/en-us/library/system.net.sockets.socketerror.aspx
Debugwindow.Text += e.ToString();
return;
}
byte[] response = new byte[255];
e.SetBuffer(response, 0, response.Length);
e.Completed -= new EventHandler<SocketAsyncEventArgs>(OnConnect);
e.Completed += new EventHandler<SocketAsyncEventArgs>(OnReceive);
socket.ReceiveAsync(e);
}
public void OnReceive(object sender, SocketAsyncEventArgs e)
{
string s = Encoding.UTF8.GetString(e.Buffer, e.Offset, e.BytesTransferred);
socket.ReceiveAsync(e);
}
public void sendbtn_Click(object sender, RoutedEventArgs e)
{
try
{
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
SocketAsyncEventArgs args = new SocketAsyncEventArgs();
string s = textBoxSend.Text;
byte[] data = Encoding.UTF8.GetBytes(s);
args.SetBuffer(data, 0, data.Length);
socket.SendAsync(args);
}
catch (Exception a)
{
Debugwindow.Text += "Exception\n";
Debugwindow.Text += a.ToString();
}
}
}
}
any ideas or suggestions ???
