public KescoUdpClient ReservePort()
{
Exit();
IPAddress ipListen;
IPAddress[] ipads = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
if (ipads.Where(x => x.AddressFamily == AddressFamily.InterNetwork).Count() == 1)
{
ipListen = ipads.First(x => x.AddressFamily == AddressFamily.InterNetwork);
}
else
{
string ip = "";
if (GetIpToServer.TestConnection(connectionString, out ip))
{
try
{
ipListen = IPAddress.Parse(ip);
}
catch (Exception ex)
{
throw new Exception(ip, ex);
}
}
else
{
return(null);
}
}
extPoint = new IPEndPoint(ipListen, 10300);
int i = 10300;
while (!Trying && (i != 11300))
{
extPoint.Port = i;
try
{
client = new KescoUdpClient(extPoint);
Trying = true;
}
catch
{
i++;
}
}
if (i == 11300)
{
return(null);
}
return(client);
}
private void DataReceived(IAsyncResult ar)
{
if (!Started)
{
return;
}
var objs = (object[])ar.AsyncState;
KescoUdpClient tmpClient = (KescoUdpClient)objs[1];
var ipEndPoint = (IPEndPoint)objs[0];
IPAddress IpListen = extPoint.Address;
int port = extPoint.Port;
try
{
getByte = tmpClient.EndReceive(ar, ref ipEndPoint);
}
catch
{
return;
}
if (tmpClient != client)
{
tmpClient.MyClose();
tmpClient = null;
}
extPoint.Address = IpListen;
extPoint.Port = port;
UpdateSubscription();
if (getByte != null)
{
OnRecived(Encoding.Default.GetString(getByte));
}
try
{
if (tmpClient != null && client != null)
{
client.BeginReceive(DataReceived, ar.AsyncState);
}
}
catch
{
}
}
public void Exit()
{
try
{
Started = false;
if (client != null)
{
client.MyClose();
client = null;
}
if (strID > 0)
{
using (var cn = new SqlConnection(connectionString))
using (SqlCommand scm = new SqlCommand("DELETE FROM " + dataTable + " WHERE (КодРегистрацииРассылки = @id)", cn))
{
scm.Parameters.Add("@id", SqlDbType.Int, 4).Value = strID;
try
{
scm.Connection.Open();
scm.ExecuteNonQuery();
}
catch (SqlException sqlEx)
{
sqlErrorShow(sqlEx);
}
finally
{
scm.Connection.Close();
}
}
}
}
catch
{
}
}