//Ukončení spojení
public void Close()
{
try
{
SocketAniDb.Shutdown(SocketShutdown.Both);
SocketAniDb.Close();
SocketAniDb = null;
}
catch
{
SocketAniDb = null;
}
Status = SocketMsgs.SDisconnect;
}
//Připojení k serveru
public void Connnect()
{
try
{
SocketAniDb = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
SocketAniDb.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, _timeOut);
SocketAniDb.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.DontRoute, true);
SocketAniDb.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
LocalHostEntry = Dns.GetHostByName(Dns.GetHostName());
var k = 0;
if (_netGw.Length == 3)
{
for (var i = 0; i < LocalHostEntry.AddressList.Length; i++)
{
if (LocalHostEntry.AddressList[i].ToString() == _netGw[2])
{
k = i;
break;
}
}
}
LocalIpEndPoint = new IPEndPoint(LocalHostEntry.AddressList[k], _localPort);
SenderRemote = LocalIpEndPoint;
SocketAniDb.Bind(LocalIpEndPoint);
RemoteHostEntry = Dns.GetHostByName(_serverName);
RemoteIpEndPoint = new IPEndPoint(RemoteHostEntry.AddressList[0], _serverPort);
ReceiverRemote = RemoteIpEndPoint;
SocketAniDb.Connect(RemoteIpEndPoint);
Status = SocketMsgs.SConnect;
}
catch (Exception e)
{
Close();
}
}
//Příjem dat
public byte[] Receive(byte[] buffer, int offset, int size)
{
if (SocketAniDb.Connected)
{
Status = SocketMsgs.SReceiveing;
var startTickCount = Environment.TickCount;
var received = 0; // how many bytes is already received
do
{
if (Environment.TickCount > startTickCount + _timeOut)
{
break;
}
try
{
received += SocketAniDb.Receive(buffer, offset + received, size - received, SocketFlags.None);
}
catch (SocketException ex)
{
if (ex.SocketErrorCode == SocketError.WouldBlock ||
ex.SocketErrorCode == SocketError.IOPending ||
ex.SocketErrorCode == SocketError.NoBufferSpaceAvailable)
{
// socket buffer is probably empty, wait and try again
Thread.Sleep(30);
}
}
} while (received < size);
Status = SocketMsgs.SReceive;
return(buffer);
}
Status = SocketMsgs.SDisconnect;
return(ConvertToByte("DISCONNECT"));
}
//Odeslání dat
public void Send(byte[] buffer, int offset, int size)
{
if (SocketAniDb != null)
{
Status = SocketMsgs.SSending;
var startTickCount = Environment.TickCount;
var sent = 0; // how many bytes is already sent
do
{
if (Environment.TickCount > startTickCount + _timeOut)
{
break;
}
try
{
sent += SocketAniDb.Send(buffer, offset + sent, size - sent, SocketFlags.None);
}
catch (SocketException ex)
{
if (ex.SocketErrorCode == SocketError.WouldBlock ||
ex.SocketErrorCode == SocketError.IOPending ||
ex.SocketErrorCode == SocketError.NoBufferSpaceAvailable)
{
// socket buffer is probably full, wait and try again
Thread.Sleep(30);
}
}
} while (sent < size);
Status = SocketMsgs.SSend;
}
else
{
Status = SocketMsgs.SDisconnect;
}
}
