private static void Maintain()
{
while (true)
{
try
{
string _mid = Cryptography.RandomString(5, false);
byte[] packet = PublicTools.EncodeMessage(_mid, "HeartBeat");
if (CoreSend(packet, _mid, out string reply))
{
LW.D("HeartBeat Succeed! " + reply);
}
else
{
throw new Exception("CoreSend Error: Timeout");
}
Thread.Sleep(5000);
}
catch (Exception ex)
{
if (ex is ThreadAbortException)
{
return;
}
LW.E("Heartbeat Error! " + ex.Message);
socketclient.CloseAndDispose();
stream.CloseAndDispose();
Initialise(remoteEndpoint.Address, remoteEndpoint.Port);
Thread.Sleep(5000);
}
}
}
//发送字符信息到服务端的方法
public static bool SendData(string sendMsg, string MessageId, out string rcvdMessage)
{
rcvdMessage = "";
byte[] mergedPackage = PublicTools.EncodeMessage(MessageId, sendMsg);
while (!Connected)
{
LW.E("Message Sent Waiting for connection....");
Thread.Sleep(500);
}
return(CoreSend(mergedPackage, MessageId, out rcvdMessage));
}
private static void Recv(object socketclientpara)
{
Socket baseSocket = socketclientpara as Socket;
NetworkStream stream = new NetworkStream(baseSocket);
string remoteEP = baseSocket.RemoteEndPoint.ToString();
bool _connectionOpened = false;
while (true)
{
try
{
string requestString = PublicTools.DecodeMessage(stream);
LW.D("Recived Data: " + requestString);
if (requestString.Length <= 5)
{
baseSocket.CloseAndDispose();
break;
}
string _MessageId = requestString.Substring(0, 5);
requestString = requestString.Substring(5);
if (requestString == "openConnection")
{
LW.D("C: Recieve an OpenConnection Request, from " + remoteEP);
byte[] arrSendMsg = PublicTools.EncodeMessage(_MessageId, remoteEP);
stream.Write(arrSendMsg, 0, arrSendMsg.Length);
stream.Flush();
LW.D("C: Replied an OpenConnection Request, to " + remoteEP);
_connectionOpened = true;
}
else if (_connectionOpened)
{
if (requestString == "HeartBeat")
{
LW.D("B: Recieve a HearBeat, from " + remoteEP);
DateTime rtime = DateTime.Now;
byte[] arrSendMsg = PublicTools.EncodeMessage(_MessageId, rtime.ToNormalString());
stream.Write(arrSendMsg, 0, arrSendMsg.Length);
stream.Flush();
LW.D("C: Replied a HearBeat, to " + remoteEP);
}
else if (requestString.ToParsedObject(out DBInternal request))
{
QueryStrings[remoteEP] = requestString;
LW.D("Q: " + remoteEP + " :: " + requestString);
//It takes Time.....
string returnStr = DatabaseCore.ProcessRequest(request);
byte[] arrSendMsg = PublicTools.EncodeMessage(_MessageId, returnStr);
stream.Write(arrSendMsg, 0, arrSendMsg.Length);
stream.Flush();
LW.D("P: " + remoteEP + " :: " + returnStr);
}
else
{
//Invalid Connection......
LW.E("E: " + remoteEP + " :: JSON Parse Exception!");
baseSocket.CloseAndDispose();
QueryStrings.Remove(remoteEP);
break;
}
}
else
{
LW.E("Connection to " + remoteEP + " is not marked as 'Opened'");
baseSocket.CloseAndDispose();
stream.CloseAndDispose();
QueryStrings.Remove(remoteEP);
break;
}
}
catch (Exception ex)
{
LW.E("Client " + remoteEP + " drops the connection. " + "\r\n" + ex.Message + "\r\n" + ex.StackTrace + "\r\n");
QueryStrings.Remove(remoteEP);
stream.CloseAndDispose();
baseSocket.CloseAndDispose();
break;
}
}
QueryStrings.Remove(remoteEP);
LW.E("Client Connection Socket to " + remoteEP + " gonna Stop!");
Thread.CurrentThread.Abort();
return;
}
