private void SendReceiveConfirmationMessage(int refNo, IPAddress remoteIP)
{
if (remoteIP == null || remoteIP == IPAddress.None)
{
return;
}
IPEndPoint receiverEndPoint = new IPEndPoint(remoteIP, MulticastGroupIpEndPoint.Port);
Message message = new ReceiveConfirmationMessage(refNo);
Socket udpSocket = SocketHelper.GetUdpSocketForSender();
SendMessage(udpSocket, receiverEndPoint, message);
}
internal void SendSignOnReply(IPAddress remoteIP)
{
if (remoteIP == null || remoteIP == IPAddress.None)
{
return;
}
IPEndPoint receiverEndPoint = new IPEndPoint(remoteIP, MulticastGroupIpEndPoint.Port);
Message message = new SignonMessage();
message.HeaderData.IsReply = true;
Socket udpSocket = SocketHelper.GetUdpSocketForSender();
SendMessage(udpSocket, receiverEndPoint, message);
}
internal void SendCurrentUserInfoMessage(IPAddress remoteIP, bool IsReply)
{
if (remoteIP == null || remoteIP == IPAddress.None)
{
return;
}
IPEndPoint receiverEndPoint = new IPEndPoint(remoteIP, MulticastGroupIpEndPoint.Port);
UserInfo currentUserInfo = UserInfo.GetCurrentUserInfo();
Message message = new UserInfoMessage(currentUserInfo);
message.HeaderData.IsReply = IsReply;
Socket udpSocket = SocketHelper.GetUdpSocketForSender();
SendMessage(udpSocket, receiverEndPoint, message);
}
internal void SendSignOn()
{
List <Socket> mcastSenderSockets = SocketHelper.GetUdpMulticastSocketForSender(MulticastGroupIpEndPoint);
if (mcastSenderSockets == null || mcastSenderSockets.Count == 0)
{
return;
}
Message message = new SignonMessage();
foreach (Socket mcastSenderSocket in mcastSenderSockets)
{
if (mcastSenderSocket == null)
{
continue;
}
SendMessage(mcastSenderSocket, MulticastGroupIpEndPoint, message);
}
}
public void SendTextMessage(string remoteIPString, string text)
{
if (remoteIPString == null || remoteIPString.Trim() == string.Empty)
{
return;
}
IPAddress remoteIP;
if (IPAddress.TryParse(remoteIPString, out remoteIP) == false)
{
return;
}
if (remoteIP == null || remoteIP == IPAddress.None)
{
return;
}
IPEndPoint receiverEndPoint = new IPEndPoint(remoteIP, MulticastGroupIpEndPoint.Port);
Message message = new TextMessage(text);
Socket udpSocket = SocketHelper.GetUdpSocketForSender();
SendMessage(udpSocket, receiverEndPoint, message);
}
private void UdpListenerWorkMethod()
{
List <Socket> udpListenerSockets = SocketHelper.GetUdpMulticastSocketForReceiver(MulticastGroupIpEndPoint);
try
{
byte[] dataBuffer = null;
EndPoint remoteEP = null;
while (true)
{
Socket udpListenerSocket = null;
while (true)
{
bool dataAvailable = false;
for (int i = 0; i < udpListenerSockets.Count; i++)
{
udpListenerSocket = udpListenerSockets[i];
if (udpListenerSocket != null && udpListenerSocket.Available > 0)
{
dataAvailable = true;
break;
}
}
if (dataAvailable == true)
{
break;
}
//Wait
Thread.Sleep(100);
}
remoteEP = new IPEndPoint(IPAddress.Any, 0);
dataBuffer = new byte[udpListenerSocket.Available];
int dataLength = udpListenerSocket.ReceiveFrom(dataBuffer, ref remoteEP);
dataBuffer = SevenZipHelper.Decompress(dataBuffer);
int msgHeaderDataLength;
Message message = GetMessageFromBytes(dataBuffer, out msgHeaderDataLength);
if (message == null || message.HeaderData == null || msgHeaderDataLength < 0)
{
continue;
}
IPAddress ipAddress = IPAddress.None;
if (remoteEP is IPEndPoint)
{
ipAddress = (remoteEP as IPEndPoint).Address;
}
if (message.HeaderData.MsgDataType != EMsgDataType.ReceiveConfirmation)
{
SendReceiveConfirmationMessage(message.HeaderData.RefNo, ipAddress);
}
ProcessMessage(message, ipAddress);
dataBuffer = null;
remoteEP = null;
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
for (int i = 0; i < udpListenerSockets.Count; i++)
{
if (udpListenerSockets[i] != null)
{
udpListenerSockets[i].Close();
}
}
}
