private void Form1_Load(object sender, EventArgs e)
{
IPEndPoint localEP = new IPEndPoint(System.Net.IPAddress.Any, 0);
//
// create the socket and bind to INADDR_ANY
//
socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
socket.Bind(localEP);
localEP = (IPEndPoint)socket.LocalEndPoint;
//
// start asynchronous read
//
SocketStateObject so = new SocketStateObject(socket);
socket.BeginReceive(so.m_buffer, 0, SocketStateObject.BUFFER_SIZE, 0, new AsyncCallback(this.OnReadSocket), so);
try
{
//
// start the register and browse operations
//
registrar = DNSService.Register(0, 0, System.Environment.UserName, "_p2pchat._udp", null, null, localEP.Port, null, new DNSService.RegisterReply(OnRegisterReply));
browser = DNSService.Browse(0, 0, "_p2pchat._udp", null, new DNSService.BrowseReply(OnBrowseReply));
}
catch
{
MessageBox.Show("DNSServices Not Available", "Error");
Application.Exit();
}
}
OnReadSocket
(
IAsyncResult ar
)
{
SocketStateObject so = (SocketStateObject)ar.AsyncState;
Socket s = so.WorkSocket;
try
{
if (s == null)
{
return;
}
int read = s.EndReceive(ar);
if (read > 0)
{
String msg = Encoding.UTF8.GetString(so.m_buffer, 0, read);
Invoke(readMessageCallback, new Object[] { msg });
}
s.BeginReceive(so.m_buffer, 0, SocketStateObject.BUFFER_SIZE, 0, new AsyncCallback(OnReadSocket), so);
}
catch
{
}
}
private void Form1_Load(object sender, EventArgs e)
{
IPEndPoint localEP = new IPEndPoint(System.Net.IPAddress.Any, 0);
//
// create the socket and bind to INADDR_ANY
//
socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
socket.Bind(localEP);
localEP = (IPEndPoint) socket.LocalEndPoint;
//
// start asynchronous read
//
SocketStateObject so = new SocketStateObject(socket);
socket.BeginReceive(so.m_buffer, 0, SocketStateObject.BUFFER_SIZE, 0, new AsyncCallback(this.OnReadSocket), so);
try
{
//
// start the register and browse operations
//
registrar = DNSService.Register(0, 0, System.Environment.UserName, "_p2pchat._udp", null, null, localEP.Port, null, new DNSService.RegisterReply(OnRegisterReply));
browser = DNSService.Browse(0, 0, "_p2pchat._udp", null, new DNSService.BrowseReply(OnBrowseReply));
}
catch
{
MessageBox.Show("DNSServices Not Available", "Error");
Application.Exit();
}
}
