Winsock2 Client/Server

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C++

Question Revision #2

I am trying to write my own remote desktop program using C++ and WinApi. I have written a multi class project that uses "BmpTools.h" to capture the screen, set the screen, get arrays of pixel data, compress arrays of pixel data, etc. It uses "nSocket.h" for creating a server or client and sending/recieving data through sockets. My problem right now is that my program seems to hang for no reason at all in the middle of sending. I would greatly appreciate if someone could tell me why it hangs for no reason. Here is all of my code.

I have never used a message board like this to find an answer to my questions, I usually find the answers on my own. Please excuse me if I entered too much information and/or made it difficult to answer my question.

My program seems to hang the line after cout << "Sent Data Info!\nSending Main Data...\n"; in my Client and at the line after cout << "Recieved Data Info!\n"; in my Server.

Here is the RELEVANT code to my problem.

Client.cpp

#include <windows.h>
#include <iostream>
#include "BmpTools.h"
#include "nSocket.h"

using std::cout;

int main(int argc, char *argv[])
{
     HBITMAP bmp;
     unsigned char *pixels, *cPixels;
     int arraySize, dataSize, lastPacketSize, compBits, compBit1, compBit2, compBit3, compBit4;
     unsigned char sendData[6144];
     int bufferSize = 6144;
     int run = 148;
     cout << "Connecting...\n";
     nSocket client;
     client.nConnect("nyllshanson.selfip.com", 1000);
     cout << "Connected!\n";
     while(run!=SOCKET_ERROR)
     {
          bmp = getScreen();
          delete [] pixels;
          pixels = charGetPixels(bmp);
          delete [] cPixels;
          cPixels = charCompressPixels(pixels);
          compBit1 = cPixels[0];
          compBit2 = cPixels[1];
          compBit3 = cPixels[2];
          compBit4 = cPixels[3];
          compBits = (compBit1*1000000) + (compBit2*10000) + (compBit3*100) + compBit4;
          arraySize = compBits;
          dataSize = compBits / bufferSize;
          lastPacketSize = compBits % bufferSize;
          cout << "Sending Data Info...\n";
          client.nSend((char*)&arraySize, (int)sizeof(arraySize));
          client.nSend((char*)&dataSize, (int)sizeof(dataSize));
          client.nSend((char*)&lastPacketSize, (int)sizeof(lastPacketSize));
          cout << "Sent Data Info!\nSending Main Data...\n";
          for(int i=0;i<dataSize;i++)
          {
               for(int j=0;j<bufferSize;j++)
               {
                    sendData[j] = cPixels[(j+(i*bufferSize))];
               }
               run = client.nSend((char*)sendData, lastPacketSize);
          }
          cout << "Sent Main Data!\nSending Last Packet...\n";
          if(lastPacketSize!=0)
          {
               for(int i=0;i<lastPacketSize;i++)
               {
                    sendData[i] = cPixels[(i+(dataSize*bufferSize))];
               }
               run = client.nSend((char*)sendData, bufferSize);
          }
          cout << "Sent Last Packet!\n";
     }
     client.nClose();
     client.nCleanup();
}

Server.cpp

#include <windows.h>
#include <iostream>
#include "BmpTools.h"
#include "nSocket.h"

using std::cout;

int main(int argc, char *argv[])
{
     HBITMAP bmp;
     unsigned char *pixels, *uPixels;
     int arraySize, dataSize, lastPacketSize;
     unsigned char recvData[6144];
     int bufferSize = 6144;
     int run;
     cout << "Starting Server...\n";
     nSocket server;
     server.nStartServer(1000);
     cout << "Server Started!\n";
     while(true)
     {
          cout << "Waiting For Connection...\n";
          server.nAcceptConnection();
          cout << "Accepted Connection!\n";
          run = 148;
          while(run!=SOCKET_ERROR)
          {
               cout << "Recieving Data Info...\n";
               server.nRecv((char*)&arraySize, (int)sizeof(arraySize));
               server.nRecv((char*)&dataSize, (int)sizeof(dataSize));
               server.nRecv((char*)&lastPacketSize, (int)sizeof(lastPacketSize));
               cout << "Recieved Data Info!\n";
               delete [] pixels;
               pixels = new unsigned char[arraySize];
               cout << "Recieving Main Data...\n";
               for(int i=0;i<dataSize;i++)
               {
                    server.nRecv((char*)recvData, bufferSize);
                    for(int j=0;j<bufferSize;j++)
                    {
                         pixels[(j+(i*bufferSize))] = recvData[j];
                    }
               }
               cout << "Recieved Main Data!\nRecieving Last Packet...\n";
               if(lastPacketSize!=0)
               {
                    server.nRecv((char*)recvData, bufferSize);
                    for(int i=0;i<lastPacketSize;i++)
                    {
                         pixels[(i+(dataSize*bufferSize))] = recvData[i];
                    }
               }
               cout << "Recieved Last Packet!\n";
               delete [] uPixels;
               uPixels = charUncompressPixels(pixels);
               bmp = charSetPixels(uPixels);
               setScreen(bmp);
          }
     }
}

If you need any more code for reference just let me know and I will put it back up, this time making sure that I dont double encode it in HTML. Thanks in advance for helping.