Thread: Sending image

When i send a text file everything is fine.
When i try to send a .gif it gives me the correct size but goes into a loop and sending the same 11 bytes.

I open the files in binary mode so it cant be the problem.
I got a hunch that it should meet an EOF character or such but i dont check for that so i dont know what could be the problem.

Client sending:

Code:

void Send_File()
{
     //***************************************
     //Read file and send size
     //***************************************
     ifstream file("1.gif", ios::binary);
     char cLength[256] = {0};
     unsigned int nBytesSent = 0, fileSize = 0, r = 0;
     // get length of file:
     file.seekg (0, ios::end); fileSize = file.tellg(); file.seekg (0, ios::beg);
     // allocate memory:
     char * buffer = new char [fileSize];
     // read data as a block:
     file.read (buffer,fileSize);
     file.close();  itoa(fileSize, cLength,10);
     send(inetsock, cLength, strlen(cLength), 0);
     //******************************************
     //Send data
     //******************************************
     char *buf = new char[256];
     cout <<  "fileSize "  <<  fileSize  << endl;  system("pause");
     while(nBytesSent<fileSize)
     {
           string str(buffer); //char* to string

           strcpy(buf, str.substr(nBytesSent, 255).c_str());
           r = send(inetsock, buf, strlen(buf), 0);
           if (r==SOCKET_ERROR)
           {
               cout << "Connection unexpectedly closed \n"; closesocket(inetsock);
           }
           nBytesSent+=r;
           cout << "nBytesSent " << nBytesSent  << endl;

     }
     delete[] buffer; delete[] buf;
}

Server recieving:

Code:

void Recieve_File()
{
   //Recieve size
      char recvBuff[256]={0}; string fileBuff="";
   unsigned int fileSize = 0,    nBytesRecieved = 0,  r = 0;
      recv(AcceptSock, recvBuff, sizeof(recvBuff), 0);
   fileSize=atof(recvBuff);
   //cout << fileSize << endl; system("pause");
   //******************************************
   //Recieve data
   //******************************************
      char *buf = new char[256];
      cout << "fileSize "       << fileSize  << endl;
   while(nBytesRecieved<fileSize)
   {
         memset(buf, 0, 256);
         r=recv(AcceptSock, buf, sizeof(buf), 0);
         fileBuff.append(buf);
         nBytesRecieved+=r+1;
         cout << "nBytesRecieved " << nBytesRecieved  << endl;

   }
   //cout << fileBuff << endl; system("pause");
   ofstream TheCopy("TheCopy.txt",ios::binary | ios::app);
   TheCopy.write (fileBuff.c_str(),fileSize);
   TheCopy.close();
   delete[] buf;
}