Winsock - Sending files.

// Client send function
nt Send(void* pvBuffer, int iStillToSend)
{
  int iRC = 0;
  int iSendStatus = 0;
  timeval SendTimeout;
  char *pBuffer = static_cast<char*>(pvBuffer);

  fd_set fds;

  FD_ZERO(&fds);
  FD_SET(Socket, &fds);

  // Set timeout
  SendTimeout.tv_sec  = 0;
  SendTimeout.tv_usec = 250000;              // 250 ms

  // As long as we need to send bytes...
  while(iStillToSend > 0)
  {
    iRC = select(0, NULL, &fds, NULL, &SendTimeout);

    // Timeout
    if(!iRC)
      return -1;

    // Error
    if(iRC < 0)
      return WSAGetLastError();

    // Send some bytes
    iSendStatus = send(Socket, pBuffer, iStillToSend, 0);   // Socket is of type 'SOCKET' and is the current connection socket

    // Error
    if(iSendStatus < 0)
      return WSAGetLastError();
    else
    {
      // Update buffer and counter
      iStillToSend -= iSendStatus;
      pBuffer += iSendStatus;
    }
  }

  return 0;
}


// Server receive function
int Receive(SOCKET Socket, void* pvBuffer, int iStillToReceive)
{
  int iRC = 0;
  int iReceiveStatus = 0;
  timeval ReceiveTimeout;
  char* pBuffer = static_cast<char*>(pvBuffer);

  // Set timeout
  ReceiveTimeout.tv_sec  = 0;
  ReceiveTimeout.tv_usec = 250000;             // 250 ms

  fd_set fds;

  FD_ZERO(&fds);
  FD_SET(Socket, &fds);

  // As long as we need to receive bytes...
  while(iStillToReceive > 0)
  {
    iRC = select(0, &fds, NULL, NULL, &ReceiveTimeout);

    // Timeout
    if(!iRC)
      return -1;

    // Error
    if(iRC < 0)
      return WSAGetLastError();

    // Receive some bytes
    iReceiveStatus = recv(Socket, pBuffer, iStillToReceive, 0);

    // Error
    if(iReceiveStatus < 0)
      return WSAGetLastError();
    else
    {
      // Update buffer and counter
      iStillToReceive -= iReceiveStatus;
      pBuffer += iReceiveStatus;
    }
  }

  return 0;
}

void FileRecive(char *Filename)
{
    FILE *File = fopen(Filename, "wb");

    // File size
    char Size[128];
    recvfrom(Socket, Size, 128, 0, (sockaddr*)&Addr, &Addrlen);
    Size[127] = '\0';
    int IntSize = atoi(Size);

    while(IntSize > 0)
    {
        char Buffer[1500];

        if(IntSize >= 1024)
        {
            recvfrom(Socket, Buffer, 1024, 0, (sockaddr*)&Addr, &Addrlen);
            fwrite(Buffer, 1024, 1, File);
        }
        else
        {
            recvfrom(Socket, Buffer, IntSize, 0, (sockaddr*)&Addr, &Addrlen);
            Buffer[IntSize] = '\0';
            fwrite(Buffer, 1024, 1, File);
        }

        IntSize -= 1024;
    }

    fclose(File);
}

void SendFile()
{
    std::ifstream File;
    File.open("C:\\Text.txt", std::ios::in| std::ios::binary| std::ios::ate);
    int Size = (int)File.tellg();
    File.close();

    char FileSize[10];
    itoa(Size, FileSize, 10);

    // Send size
    sendto(Socket, FileSize, strlen(FileSize), 0, (sockaddr*)&Addr, sizeof(Addr));

    FILE *MyFile = fopen("C:\\Text.txt", "rb");

    while(Size > 0)
    {
        char Buffer[1500];

        if(Size >= 1024)
        {
            fread(Buffer, 1024, 1, MyFile);
            sendto(Socket, Buffer, 1024, 0, (sockaddr*)&Addr, sizeof(Addr));
        }
        else
        {
            fread(Buffer, 1024, 1, MyFile);
            Buffer[Size] = '\0';
            sendto(Socket, Buffer, Size, 0, (sockaddr*)&Addr, sizeof(Addr));
        }

        Size -= 1024;
    }

    fclose(MyFile);
}