socket programming

the code for sending files is like this : in which i am sending the
contents
in the order :
                file size, filename size, file name, file contents

void Sender::SendData(void)
{
CString findFilePath=filePathInformation+"\\*.*";
bWorking=finder.FindFile(_T((LPCTSTR)findFilePath));
while (bWorking)
{
     bWorking = finder.FindNextFile();
     CString findFileName(finder.GetFileName());
      if(findFileName.Compare(".") == 0 || findFileName.Compare("..")
== 0)
     {
     //CloseSocket();
     continue;
     }
     int returnValue=SetAddress();
     if(returnValue==0)
      {
      CString sendFilePath=finder.GetFilePath();
      FILE *filePointer;
      //int returnedValue;
      if( (filePointer = fopen(sendFilePath, "rb" )) == NULL )
      {
      cout<<endl<<"File open error";
      CloseSocket();
      return;
      }
      else
      {
      char *fileContentBuffer;
      unsigned int bytesRead,fileNameLength;
      long fileSize;
      //long allocReqNum;
      //first send the file size details
        fseek(filePointer, 0, SEEK_END); // Move File Pointer to EOF
        fileSize=ftell(filePointer); // Get position of File Pointer
        rewind(filePointer); // Move File Pointer back to beginning
of file
        fileContentBuffer = (char *)calloc(32,sizeof(long));
        //returnedValue=_CrtIsMemoryBlock(fileContentBuffer, 32,
&allocReqNum, NULL, NULL);
        ltoa( fileSize, fileContentBuffer,10 );
        int returnValue = send(mySocket,fileContentBuffer,32,0);
        if(returnValue == SOCKET_ERROR)
        {
        cout<<endl<<"Error in Sending File Length";
        CloseSocket();
        return;
        }
        else
        cout<<endl<<"File Size Sent Successfully : "<<fileSize;
        //long valueReturned=_CrtSetBreakAlloc(allocReqNum);
        //delete fileContentBuffer;
        free(fileContentBuffer);

//send file name length
       fileNameLength=findFileName.GetLength();
       fileContentBuffer = (char *)calloc(32,sizeof(int));
       char *returnChar=itoa( fileNameLength, fileContentBuffer, 10 );
       returnValue = send(mySocket,fileContentBuffer,32,0);
       if(returnValue == SOCKET_ERROR)
       {
       cout<<endl<<"Error in Sending File Details";
       CloseSocket();
       return;
       }
       else
       cout<<endl<<"File Length Sent Successfully : "<<fileNameLength;
       free(fileContentBuffer);
       //delete fileContentBuffer;
       //Send the file name
       char *temporaryBuffer;
       fileContentBuffer = (char *)calloc(255,sizeof(char));
       temporaryBuffer=findFileName.GetBuffer(fileNameLength);
       strcpy(fileContentBuffer,temporaryBuffer);
       returnValue = send(mySocket,fileContentBuffer,fileNameLength,0);
       if(returnValue == SOCKET_ERROR)
       {
       cout<<endl<<"Error in Sending in File Name";
       CloseSocket();
       return;
       }
       else
       cout<<endl<<"File Name Sent Successfully : "<<temporaryBuffer;
       free(fileContentBuffer);
       //delete fileContentBuffer;
       //sending the file
       fileContentBuffer = (char *)calloc(fileSize,sizeof(char));

bytesRead=fread(fileContentBuffer,sizeof(char),fileSize,filePointer);
       returnValue = send(mySocket,fileContentBuffer,fileSize,0);
       if(returnValue == SOCKET_ERROR)
       {
       cout<<endl<<"Error in Sending File Contents";
       CloseSocket();
       return;
       }
       else
       cout<<endl<<"File Sent Successfully "<< returnValue<<" bytes";
       //delete fileContentBuffer;
       free(fileContentBuffer);
       }
       //returnedValue=_CrtDumpMemoryLeaks();
       fclose(filePointer);
       CloseSocket();
       }
       else
       {
       cout<<endl<<"Error in connecting";
       CloseSocket();
       return;
       }
  }

}
and the receiver is getting the data in the same order.

in both of them i am getting the same memory leak errors,
could u help regarding this,

that would be greatful to me,
sirisha.