Processing the received string messages from the server

Question

I have this code in the server side that processes normal

string messages sent by the

client. If the client opens an application, the application

name will be sent to the server

along with its file path and client's hostname. My problem

is the server receives only

two looped messages, the rest is being attached to the

second message. This is the

code in the client which sends the message

Code:

 public void sendthedata()
{
if (!_timer.Enabled) // If timer is not running send data
 and start refresh interval
{
SendData();
_timer.Enabled = true;
}
private List<int> listedProcesses = new List<int>();
else // Stop timer to prevent further refreshing
{
_timer.Enabled = false;
}
}
String processPath = "";
private void SendData()
{
String processID = "";
String processName = "";
String processFileName = "";
for (int i = 0; i < piis.Count; i++)
String processMachinename = "";
listBox1.BeginUpdate();
try
{   
piis = GetAllProcessInfos();
{
try
{
processID = piis[i].Id.ToString();
if (!listedProcesses.Contains(piis[i].Id)) //placed this on a list to avoid redundancy
{
listedProcesses.Add(piis[i].Id);
processName = piis[i].Name.ToString();
output.Text += "\n\nSENT DATA : \n\t" + processFileName + 
"\n\t" + processMachinename
 + "\n\t" + processID + "\n\t" + processName + "\n\t" + processPath + "\n";
processPath = piis[i].Path.ToString();
processFileName = piis[i].FileName.ToString();
processMachinename = piis[i].Machinename.ToString();
}
}
catch (Exception ex)
{
wait.Abort();
data = "--++" + processFileName + " " +  processMachinename +
 " "  + processID + " " 
+ processPath;
output.Text += "Error..... " + ex.StackTrace;
}
NetworkStream ns = tcpclnt.GetStream();
String data = "";
if (ns.CanWrite)
{
byte[] bf = new ASCIIEncoding().GetBytes(data);
ns.Write(bf, 0, bf.Length);
ns.Flush();
}
}
}
}
finally
{
listBox1.EndUpdate();
} 

And this is where the server processes the received messages.

It passes through the

"normal message" part where it has (--++) unicode.

Code:

 private void recieveData()
{
NetworkStream nStream = tcpClient.GetStream();
ASCIIEncoding ascii = null;
byte[] buffer = new byte[1024];
while (!stopRecieving)
{
if (nStream.CanRead)
{
ascii = new ASCIIEncoding();
nStream.Read(buffer, 0, buffer.Length);
recvDt = ascii.GetString(buffer);
f = recvDt.Contains("+@@+");
/*Received message checks if it has +@@+ then the ip is disconnected*/
bool f = false;
if (f)
{
string d = "+@@+";
//    new Transmit_File().transfer_file(file, ipselected);
recvDt = recvDt.TrimStart(d.ToCharArray());
clientDis();
stopRecieving = true;
}
//else if (recvDt.Contains("^^"))
//{
//}
this.Invoke(new rcvData(addToOutput));
/* ++-- shutsdown/restrt/logoff/abort*/
else if (recvDt.Contains("++--"))
{
string d = "++--";
recvDt = recvDt.TrimStart(d.ToCharArray());
clientDis();
}
Thread.Sleep(1000);
/*--++ Normal msg*/
else if (recvDt.Contains("--++"))
{
string d = "--++";
recvDt = recvDt.TrimStart(d.ToCharArray());
this.Invoke(new rcvData(addToOutput));
}
}
}
}
}
public void addToOutput()
{
if (recvDt != null && recvDt != "")
{
output.Text += "\n Received Data : " + recvDt;
recvDt = null;
}

This is an example of a received message. The second

"Received Data" gets the rest of

the message. I have five opened application in this example.

The messages has been

assigned a unique character (--++) that will be trimmed when

it is being receive in the

server. As you can see here the third, fourth and so on

messages still has that

characters. What seems to be the problem here?

Listening server started @ 192.168.1.101 Listening on 800 port

Waiting for connection . . .

New IP client found :192.168.1.101

 

Received Data : Server_PC UNICORNV-FA15C8 4200

C:\Users\Admin\Desktop

\All Client Server and LogIn\LogIn\LogIn2\bin\

Debug\LogIn2.vshost.exe

 

Received Data : Untitled - Notepad UNICORNV-FA15C8

1652 C:\Windows

\System32\notepad.exe--++Client_PC (Running) -

Microsoft Visual C# 2010

Express UNICORNV-FA15C8 3988 C:\Program Files\

Microsoft Visual Studio 10.0

\Common7\IDE\VCSExpress.exe--++LogIn (Running)

- Microsoft Visual C# 2010

Express UNICORNV-FA15C8 3756 C:\Program Files\

Microsoft Visual Studio 10.0

\Common7\IDE\VCSExpress.exe--++

NetworkStream.Read Metho

d (Byte[],?Int32,?Int32)?(System.Net.Sockets) - Google

Chrome UNICORNV-FA15C8

2168 C:\Program Files\Google\Chrome\Application\chrome.exe