static private void UdpReceiveThreadProc(object data)
{
UdpServers udpServer = (UdpServers)data;
IPEndPoint localEndpoint = udpServer.PopEndpoint();
//Receive
//Creates an IPEndPoint to record the IP Address and port number of the sender.
// The IPEndPoint will allow you to read datagrams sent from any source.
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
try
{
UdpClient ucli = new UdpClient(localEndpoint);
while (udpServer.GoonListen)
{
// Blocks until a message returns on this socket from a remote host.
Byte[] receiveBytes = ucli.Receive(ref RemoteIpEndPoint);
string returnData = Encoding.ASCII.GetString(receiveBytes);
string msg = "(UDP Server: Received) LocalEndPoint {" + localEndpoint.ToString() + "}, RemoteEndPoint {"
+ RemoteIpEndPoint.ToString() + "}, msg-->{" + returnData.ToString() + "}";
Debug.WriteLine(msg);
udpServer.AppendMessage(msg);
if (returnData.ToString().Contains(UdpServers.kAskQuestion))
{
Byte[] sendBytes = Encoding.ASCII.GetBytes(UdpServers.kAnswer);
ucli.Send(sendBytes, sendBytes.Length, RemoteIpEndPoint);
string sendMsg = "(UDP Server: AckSent) LocalEndPoint {" + localEndpoint.ToString() + "}, RemoteEndPoint {"
+ RemoteIpEndPoint.ToString() + "}, msg-->{" + UdpServers.kAnswer + "}";
Debug.WriteLine(sendMsg);
udpServer.AppendMessage(sendMsg);
}
}
ucli.Close();
}
catch (SocketException ex)
{
Debug.WriteLine("SocketErrorcode " + ex.ErrorCode + ", " + ex.ToString());
switch (ex.SocketErrorCode)
{
case SocketError.AddressAlreadyInUse:
{
string msg = "(UDP Server: AddressAlreadyInUse) LocalEndPoint {" + localEndpoint.ToString() + "}";
Debug.WriteLine(msg);
udpServer.AppendMessage(msg);
udpServer.AddExceptionalPort(localEndpoint.Port);
}
break;
default:
{
Debug.WriteLine(ex.ToString());
Debug.Assert(false);
//string msg = "(UDP Server: Error) LocalEndPoint {" + localEndpoint.ToString() + "}, Error Code "
// + ex.ErrorCode.ToString() + " Error Msg: " + ex.Message;
//Debug.WriteLine(msg);
//udpServer.AppendMessage(msg);
}
break;
}
}
catch (Exception e)
{
Debug.WriteLine(e.ToString());
Debug.Assert(false);
}
udpServer.DoDecrease();
}
private void CheckAsServer(string[] tcpPorts, string[] udpPorts)
{
if (startStopButton.Text.Equals("Start"))
{
//goto start
ThreadSafePushNewMessage("Start as Server, Tcp ports " + String.Join(" ", tcpPorts) + " Udp ports " + String.Join(" ", udpPorts));
startStopButton.Text = "Stop";
EnableTcpUI(false);
EnableUdpUI(false);
checkBoxTcp.Enabled = false;
checkBoxUdp.Enabled = false;
modeComboBox.Enabled = false;
if (checkBoxTcp.Checked)
{
Debug.Assert(null == m_tcpListeners);
m_tcpListeners = new TcpListeners();
m_tcpListeners.Attach(this);
foreach (string item in tcpPorts)
{
m_tcpListeners.AddPort(Convert.ToInt32(item));
}
m_tcpListeners.StartListen();
}
if (checkBoxUdp.Checked)
{
Debug.Assert(null == m_udpServers);
m_udpServers = new UdpServers();
m_udpServers.Attach(this);
foreach (string item in udpPorts)
{
m_udpServers.AddPort(Convert.ToInt32(item));
}
m_udpServers.StartListen();
}
m_udpServersExceptionPortList = null;
timer2CheckServerException.Enabled = true;
}
else
{
//goto stop
ThreadSafePushNewMessage("Stop Server.");
timer2CheckServerException.Enabled = false;
m_udpServersExceptionPortList = null;
if (checkBoxTcp.Checked)
{
m_tcpListeners.StopListen();
TcpClients tclis = new TcpClients(IPAddress.Loopback);
TcpClients tclisv6 = new TcpClients(IPAddress.IPv6Loopback);
foreach (string item in tcpPorts)
{
tclis.AddPort(Convert.ToInt32(item));
tclisv6.AddPort(Convert.ToInt32(item));
}
tclis.StartConnect();
tclisv6.StartConnect();
List <int> exceptionalTcpPorts, exceptionalTcpPortsv6;
while (!tclis.IsConnectFinished(out exceptionalTcpPorts) || !tclisv6.IsConnectFinished(out exceptionalTcpPortsv6))
{
Thread.Sleep(500);
}
m_tcpListeners.WaitListensStop();
m_tcpListeners = null;
}
if (checkBoxUdp.Checked)
{
m_udpServers.StopListen();
UdpClients uclis = new UdpClients(IPAddress.Loopback);
UdpClients uclisv6 = new UdpClients(IPAddress.IPv6Loopback);
foreach (string item in udpPorts)
{
uclis.AddPort(Convert.ToInt32(item));
uclisv6.AddPort(Convert.ToInt32(item));
}
uclis.StartConnect();
uclisv6.StartConnect();
List <int> exceptionalUdpPorts, exceptionalUdpPortsv6;
while (!uclis.IsConnectFinished(out exceptionalUdpPorts) || !uclisv6.IsConnectFinished(out exceptionalUdpPortsv6))
{
Thread.Sleep(500);
}
m_udpServers.WaitListensStop();
m_udpServers = null;
}
EnableTcpUI(true);
EnableUdpUI(true);
checkBoxTcp.Enabled = true;
checkBoxUdp.Enabled = true;
modeComboBox.Enabled = true;
startStopButton.Text = "Start";
}
}