文件句柄操作，可读socke后将文件放在本地处理后输出

int transport(int src, int dst){

  int totalCount = 0;

  char buffer[1024];

  while(1)

  {

    int readCount  = read (src, buffer, 1024);

    int writeCount = write(dst, buffer, readCount);

    if(readCount <= 0){

      break;

    }

    totalCount += writeCount;

  }

  return totalCount;

}